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Artigos de revistas sobre o assunto "Heart diseases – ultrasonography"
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Bernolian, Nuswil, Radiyati Umi Partan, Siti Nurmaini, Cindy Kesty e Benedictus Wicaksono Widodo. "Congenital Heart Diseases in Pregnancy". Bioscientia Medicina : Journal of Biomedicine and Translational Research 5, n.º 4 (8 de julho de 2021): 988–1004. http://dx.doi.org/10.32539/bsm.v5i4.376.
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This research aims to shed light into congenital heart diseases, the pathophysiology, and the ultrasonographic findings of congenital heart diseases. Congenital heart diseases are a major health concern, affecting 1.35 million children born every year. Ventricular septal defect, atrial septal defect, and atrioventricular septal defect are found in 57.9% cases of congenital heart diseases. The risk factors include consanguineous marriage, family history of congenital heart diseases, old maternal and paternal age, and exposure to teratogens, and genetic factors. Missteps in cardiac development are the main pathophysiology of congenital heart diseases. Ultrasonography screening in 18–22 weeks gestational age is utilized to screen. Follow-up screening can increase detection rate to 80%. This study has limitation of only discussing most common congenital heart diseases and did not delve into rarer types of congenital heart diseases and did not discuss impacts or burden of congenital heart diseases in adulthood and health comorbidities associated. This literature review is beneficial for general practitioners and obstetricians focusing in maternal fetal medicine.
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DOĞANAY, Zahide, Ayşe YILMAZ e Veysel Garani SOYLU. "Lung and cardiac ultrasonography in intensive care". Kastamonu Medical Journal 2, n.º 3 (22 de setembro de 2022): 57–62. http://dx.doi.org/10.51271/kmj-0073.
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Ultrasonography is an imaging tool that is increasingly used in the diagnosis and follow-up of many lung and heart diseases. Full lung ultrasonography is the examination of both hemithorax and protocols and image definitions have been created to make the examination more systematic and accurate. Cardiac ultrasonography is used to evaluate a moving organ. It requires users to be able to detect and interpret dynamic and variable values. Another feature of ultrasonography is its ability to guide interventional procedures. Ultrasonography will develop in the future and will be used more as a modern diagnostic tool in lung and heart evaluation by specialists.
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Poplata, Indira, Elvedina Hodžić, Nedim Begić e Ljiljana Stijepović. "THE IMPORTANCE OF ULTRASONOGRAPHY IN THE DETECTION OF CONGENITAL HEART DISEASES IN CHILDREN". MEDIS – International Journal of Medical Sciences and Research 3, n.º 2 (19 de maio de 2024): 13–17. http://dx.doi.org/10.35120/medisij030213p.
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Over the last few years, remarkable progress has been made in the field of congenital heart diseases. Improvements considering diagnostic modalities, especially imaging, in surgical and interventional techniques, as well as in postoperative therapy and care, have contributed to a significant reduction in mortality and morbidity. One of the most important applications of medical imaging techniques in children is the detection and treatment of congenital heart anomalies. Objective of this article is to show the importance of ultrasonography in the detection of congenital heart diseases in children. The study was conducted on children with simple and complex congenital heart diseases and was conducted on the Pediatric Clinic, UKCS. The research is descriptive on a representative sample. In our study, 166 children were observed, of which 148 children (77 boys, 71 girls) with simple congenital heart diseases, and 18 children (8 boys, 10 girls) with complex congenital heart diseases. Out of the total number of observed children, 115 had a surgical correction, 97 children with simple congenital heart diseases (45 boys, 52 girls) and 18 children with complex congenital heart diseases (8 boys, 10 girls). The number of children monitored through the Cardiac Counseling Center who didn’t undergo surgical correction was 51, all with simple congenital heart diseases. Out of the total number of observed children who were frequently coming for follow-ups, 28 children had changes on the ECG, and 138 of them had no changes on the ECG, 93 were surgically treated, and 73 of them were on conservative therapy. Based on the results of the research, we conclude that ultrasonography is an important method in the detection and treatment of congenital heart diseases.
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Katende, Andrew, Johanna Oehri, Victor Z. Urio, Evance Mahundi, Lulu Wilson, Victor Myovela, Chipegwa Mlula et al. "Use of a Handheld Ultrasonographic Device to Identify Heart Failure and Pulmonary Disease in Rural Africa". JAMA Network Open 7, n.º 2 (28 de fevereiro de 2024): e240577. http://dx.doi.org/10.1001/jamanetworkopen.2024.0577.
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ImportanceAgreement in lung ultrasonography findings between clinicians using a handheld ultrasonographic device and expert sonographers using a high-end ultrasonographic machine has not been studied in sub-Saharan Africa.ObjectiveTo determine the agreement in ultrasonographic findings and diagnoses between primary care clinicians trained in lung ultrasonography, board-certified expert sonographers, and senior physicians.Design, Setting, and ParticipantsThis cross-sectional single-center study was conducted from February 1, 2022, to April 30, 2023 at a referral center in rural Tanzania. Individuals 5 years or older with respiratory symptoms and at least 2 distinct respiratory signs or symptoms were eligible. A total of 459 individuals were screened.ExposuresParticipants provided their medical history and underwent a clinical examination and lung ultrasonography performed by a clinician, followed by a lung ultrasonography performed by an expert sonographer, and finally chest radiography and a final evaluation performed by a senior physician. Other tests, such as echocardiography and Mycobacterium tuberculosis testing, were conducted on the decision of the physician. Clinicians received 2 hours of instruction and three 2-hour sessions of clinical training in the use of a handheld lung ultrasonographic device; expert sonographers were board-certified.Main Outcomes and MeasuresPercentage agreement and Cohen κ coefficient for sonographic findings and diagnoses compared between clinicians and expert sonographers, and between clinicians and senior physicians.ResultsThe median (IQR) age of 438 included participants was 54 (38-66) years, and 225 (51%) were male. The median (range) percentage agreement of ultrasonographic findings between clinicians and expert sonographers was 93% (71%-99%), with κ ranging from −0.003 to 0.83. Median (range) agreement of diagnoses between clinicians and expert sonographers was 90% (50%-99%), with κ ranging from −0.002 to 0.76. Between clinicians and senior physicians, median (range) agreement of diagnoses was 89% (55%-90%), with κ ranging from −0.008 to 0.76. Between clinicians and senior physicians, diagnosis agreements were 85% (κ, 0.69) for heart failure, 78% (κ, 0.57) for definite or probable tuberculosis, 50% (κ, 0.002) for viral pneumonia, and 56% (κ, 0.06) for bacterial pneumonia.Conclusions and RelevanceIn this cross-sectional study, the agreement of ultrasonographic findings between clinicians and sonographers was mostly substantial. Between clinicians and senior physicians, agreement was substantial in the diagnosis of heart failure, moderate in the diagnosis of tuberculosis, but slight in the diagnosis of pneumonia. These findings suggest that handheld ultrasonographic devices used in addition to clinical examination may support clinicians in diagnosing cardiac and pulmonary diseases in rural sub-Saharan Africa.
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Abd El Raouf, Mustafa, Magdy Elgioushy e Shimaa A. Ezzeldein. "Congestive heart failure in cattle; etiology, clinical, and ultrasonographic findings in 67 cases". June-2020 13, n.º 6 (2020): 1145–52. http://dx.doi.org/10.14202/vetworld.2020.1145-1152.
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Background and Aim: Congestive heart failure (CHF) is a clinical disorder that results from cardiac dysfunction with subsequent fatal outcomes in most cases. Several diseases are incriminated in occurrence of CHF. Therefore, the aims of this study were to identify CHF etiology and associated clinical findings in 67 cows and to investigate the relationship between CHF and the other body organs using ultrasonographic examination. Materials and Methods: Sixty-seven cows affected by CHF admitted to the clinic with a history of loss of appetite, decrease in milk production, constipation, and brisket edema were thoroughly investigated clinically and ultrasonographically. In addition, ten apparently healthy cows were used as a control group. Results: Clinically, cows with CHF manifested jugular engorgement and pulsation (88.1%), brisket and/or intermandibular edema (77.6%), and muffled heart sounds (76.1%). Based on the ultrasonographic examination, traumatic pericarditis (82.1%) was the most prevalent etiology of CHF. Extracardiac etiology of CHF identified were exudative pleurisy (10.4%) and mediastinal abscesses (7.5%). Hepatomegaly (88.1%) and pleural effusion (61.2%) were the most documented consequences. Conclusion: Both cardiac and extracardiac diseases could be associated with CHF in cattle. Ultrasonographic changes in liver and pleura secondary to CHF were the most common findings. Ultrasonography is a good tool for the diagnosis of cardiac and extracardiac etiologies of CHF in cattle.
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Hamadah, M. H., M. Kabbani e M. A. Faraji. "77. Ultrasonography assessment of congenital renal anomalies in children with congenital heart diseases". Journal of the Saudi Heart Association 28, n.º 3 (julho de 2016): 219. http://dx.doi.org/10.1016/j.jsha.2016.04.078.
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Bolvardi, Ehsan, Seyyed Mohsen Pouryaghobi, Koorosh Ahmadi, Roohye Farzane, Niaz Mohamad Jafari Chokan e Hamidreza Reihani. "The Prognostic Value of Using Ultrasonography in Cardiac Resuscitation of Patients with Cardiac Arrest". International Journal of Biomedical Science 12, n.º 3 (15 de setembro de 2016): 110–14. http://dx.doi.org/10.59566/ijbs.2016.12110.
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Cardiopulmonary arrest is the final result of many diseases and therefore, need for a careful implementation of cardiopulmonary resuscitation (CPR) protocols in these cases is undeniably important. The introduction of ultrasound into the emergency department has potentially allowed the addition of an extra data point in the decision about when to cease cardiopulmonary resuscitation (CPR). The aim of this study is to evaluate the ability of cardiac ultrasonography performed by emergency physicians to predict resuscitation outcome in adult cardiac arrest patients. Ultrasonographic examination of the subxiphoid cardiac area was made immediately after admission to the emergency department with pulseless cardiac arrest. Sonographic cardiac activity was defined as any detectable motion within the heart including the atria, ventricles or valves. Successful resuscitation was defined as: return of spontaneous circulation for ≥ 20 min; return of breathing; palpable pulse; measurable blood pressure. The present study includes 159 patients. The presence of sonographic cardiac activity at the beginning of resuscitation was significantly associated with a successful outcome (41/49 [83.7%] versus 15/110 [13.6%] patients without cardiac activity at the beginning of resuscitation). Ultrasonographic detection of cardiac activity may be useful in determining prognosis during cardiac arrest. Further studies are needed to elucidate the predictive value of ultrasonography in cardiac arrest patients.
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Bao, Zheng. "Application of ultrasound diagnosis in cardiac and liver diseases". Applied and Computational Engineering 31, n.º 1 (22 de janeiro de 2024): 201–6. http://dx.doi.org/10.54254/2755-2721/31/20230151.
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Ultrasonography is a non-invasive imaging modality widely used to evaluate and diagnose many diseases. The purpose of this article is to provide a more detailed overview of the use of ultrasound in the diagnosis of heart and liver disease. In addition to a basic introduction to heart and liver disease, this article will explore specific applications of ultrasound in specific heart and liver diseases. In terms of heart disease, ultrasound plays an important role in the diagnosis of coronary atherosclerotic heart disease, valvular heart disease and congenital heart disease. Ultrasound can assess the degree of narrowing and blood flow in coronary arteries to help determine a patient's cardiovascular risk. For valvular heart disease, ultrasound can detect and evaluate the function and abnormality of the heart valves, providing information about valve stenosis or regurgitation. For congenital heart disease, ultrasound can reveal structural abnormalities and hemodynamic changes in the heart, helping to determine the type and severity of the lesion. In liver disease, ultrasound plays an important role in the evaluation of pathologies such as cirrhosis and hepatocellular carcinoma. Ultrasound can assess the shape, size, and texture of the liver, help detect and diagnose cirrhosis, and assess liver function and disease progression. In addition, ultrasound is also of great significance for the early diagnosis and monitoring of hepatocellular carcinoma, which can reveal the location, size and blood flow of the tumor. The role of ultrasound in diagnosing and monitoring disease will expand further with advances in technologies such as artificial intelligence and elastography. In conclusion, ultrasound plays a key role in the assessment, diagnosis and monitoring of heart and liver diseases and has many advantages. With the further development of technology and the expansion of application, the position of ultrasound in clinical practice will be further strengthened.
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Shao, Xuebo, Weidong Tang, Lianglong Yu, Qi Chen, Lijun Zhu e Yanyan He. "Adoption of Ultrasonography in Hemodynamic Diagnosis and Monitoring of Severe Respiratory Diseases". Journal of Medical Imaging and Health Informatics 10, n.º 9 (1 de agosto de 2020): 2073–78. http://dx.doi.org/10.1166/jmihi.2020.3141.
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To enhance the clinical diagnosis rate of acute respiratory distress syndrome (ARDS) and provide a reliable basis for follow-up treatment, in this research, the hemodynamic indexes of patients with severe respiratory diseases are monitored by ultrasonic imaging. A total of 64 patients with ARDS in the department of respiratory medicine of XXX hospital from June 2018 to December 2018 are listed as study subjects (including 45 males and 19 females), and are divided into control group (CG) and experimental group (EG) in random. In the CG, central venous pressure is used to detect the patients, while in the EP, ultrasonic imaging is used to detect the patients, and the ultrasonic image is denoised by wavelet transform. Respiratory parameters (respiratory rate, oxygenation index, and positive end-expiratory pressure ventilation) and hemodynamic parameters (heart rate, mean arterial pressure, pulmonary static compliance, and airway plateau pressure) are compared on the first and 10th day of admission. The fluid volume of the two groups of patients was managed according to the hemodynamic parameters. After three months, the prognosis (duration of ICU treatment, duration of mechanical ventilation, incidence of heart failure and mortality) of the patients in both groups were calculated. The results show that wavelet transform can effectively reduce the noise of ultrasonic images, so as to obtain real and reliable data. Compared with the first day of admission, respiratory parameters and hemodynamics of the patient change significantly after 10 days (P < 0.05). The average daily fluid intake in the EP is significantly lower than that in the CG (P < 0.05). The duration of treatment in ICU and mechanical ventilation in the EG is significantly lower than that in the CG (P < 0.05), which indicates that ultrasonic imaging can detect and diagnose the hemodynamics of patients, thus providing reliable guidance for patients’ fluid management and avoiding patients’ cardiac failure induced by fluid overload. This provides an experimental scheme for hemodynamic monitoring of patients with severe respiratory system.
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Rat, Nora, Iolanda Muntean, Diana Opincariu, Liliana Gozar, Rodica Togănel e Monica Chițu. "Cardiovascular Imaging for Guiding Interventional Therapy in Structural Heart Diseases". Current Medical Imaging Formerly Current Medical Imaging Reviews 16, n.º 2 (24 de janeiro de 2020): 111–22. http://dx.doi.org/10.2174/1573405614666180612081736.
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Development of interventional methods has revolutionized the treatment of structural cardiac diseases. Given the complexity of structural interventions and the anatomical variability of various structural defects, novel imaging techniques have been implemented in the current clinical practice for guiding the interventional procedure and for selection of the device to be used. Three– dimensional echocardiography is the most used imaging method that has improved the threedimensional assessment of cardiac structures, and it has considerably reduced the cost of complications derived from malalignment of interventional devices. Assessment of cardiac structures with the use of angiography holds the advantage of providing images in real time, but it does not allow an anatomical description. Transesophageal Echocardiography (TEE) and intracardiac ultrasonography play major roles in guiding Atrial Septal Defect (ASD) or Patent Foramen Ovale (PFO) closure and device follow-up, while TEE is the procedure of choice to assess the flow in the Left Atrial Appendage (LAA) and the embolic risk associated with a decreased flow. On the other hand, contrast CT and MRI have high specificity for providing a detailed description of structure, but cannot assess the flow through the shunt or the valvular mobility. This review aims to present the role of modern imaging techniques in pre-procedural assessment and intraprocedural guiding of structural percutaneous interventions performed to close an ASD, a PFO, an LAA or a patent ductus arteriosus.
Teses / dissertações sobre o assunto "Heart diseases – ultrasonography"
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Niemelä, R. (Raija). "Imaging of salivary glands and assessment of autonomic nervous system function in primary Sjögren's syndrome". Doctoral thesis, University of Oulu, 2004. http://urn.fi/urn:isbn:9514272757.
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Abstract
The purpose of the present study was to find reliable non-invasive methods for imaging salivary glands and diagnosing primary Sj?gren's syndrome (SS) and to evaluate autonomic function and central nervous system (CNS) disorders in patients with primary SS. The patient population consisted of consecutive patients with primary SS, who fulfilled the International classification criteria for primary SS, from the Division of Rheumatology, Department of Internal Medicine in Oulu University Hospital.
Magnetic resonance (MR) imaging and MR sialography of parotid glands were performed on 27 patients and 7 healthy controls and ultrasonography (US) of major salivary glands on 27 patients, 27 healthy controls, and 27 symptomatic controls with sicca symptoms or salivary gland swellings without SS. MR imaging and US showed heterogeneous parenchyma or adipose degeneration of the gland in 81% and 78% of patients, respectively. MR sialography showed ductal system changes, narrowings and dilatations, or cavities in 96% of patients. One healthy control and 2 symptomatic controls had abnormal findings of parotid or submandibular glands on US. Other controls had normal findings. The diagnostic specificity of US was 94%. Parenchymal structural changes on MR imaging and US were associated with anti-Ro/SSA positivity and weakly with the focus score index, but not with salivary or tear secretion, age, disease duration, or features of systemic activity of the disease, such as hypergammaglobulinemia or systemic complications.
A comprehensive package of cardiovascular tests, including 24-hour heart rate variability, baroreflex sensitivity test with phenylephrine, Valsalva manoeuvre, deep breathing tests, and active orthostatic test, were conducted on 30 patients and 30 healthy, age and sex-matched, randomly selected population-based controls. No signs of autonomic dysfunction were found in patients compared to controls in any of the tests. The test results were not associated with saliva or tear secretion, age, disease duration, or clinical features of systemic activity of the disease.
A case of severe inflammatory CNS disease associated with primary SS was described, and an investigation of the relevant literature was made. Though inflammatory CNS disease is a possible complication of primary SS, there is no consensus regarding its prevalence or significance in the literature. Diagnostics and treatment are empiric.
In conclusion, MR imaging, MR sialography, and US yield such a definitive picture of the glandular changes in primary SS that they are promising alternatives for invasive examinations in the diagnostics of primary SS. Comprehensive cardiovascular tests revealed no signs of autonomic dysfunction in patients with primary SS compared to general population.
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Koegelenberg, Suretha. "Application of laser doppler vibrocardiography for human heart auscultation". Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86649.
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Thesis (MScEng)--Stellenbosch University, 2014.ENGLISH ABSTRACT: This thesis investigates the feasibility of the laser Doppler vibrometer (LDV) for use in the autonomous auscultation of the human heart. As a non-contact measurement device, the LDV could become a very versatile biomedical sensor. LDV, stethoscope, piezoelectric accelerometer (PA) and electrocardiogram (ECG) signals were simultaneously recorded from 20 volunteers at Tygerberg Hospital. Of the 20 volunteers, 17 were confirmed to have cardiovascular disease. 3 patients with normal heart sounds were recorded for control data. The recorded data was successfully denoised using soft threshold wavelet denoising and ensemble empirical mode decomposition. The LDV was compared to the PA in common biomedical applications and found to be equally accurate. The heart sound cycles for each participant were segmented using a combination of ECG data and a simplicity curve. Frequency domain features were extracted from each heart cycle and input into a k-nearest neighbours classifier. It was concluded that the LDV can form part of an autonomous, non-contact auscultation system.
AFRIKAANSE OPSOMMING: Hierdie tesis ondersoek die haalbaarheid daarvan om die laser Doppler vibrasiemeter (LDV) vir die outonome beluistering van die menslike hart te gebruik. As 'n kontaklose meettoestel kan die LDV werklik 'n veelsydige biomediese sensor word. Twintig vrywilligers by die Tygerberg Hospitaal se LDV-, stetoskoop-, piësoelektriese versnellingsmeter (PV)- en elektrokardiogram (EKG) seine is gelyktydig opgeneem. Uit die 20 vrywilligers was daar 17 bevestigde gevalle van kardiovaskulêre siektes. Die data van drie pasiënte met normale hartklanke is as kontroledata opgeneem. Geraas is suksesvol uit die opgeneemde data verwyder deur 'n kombinasie van sagtedrempelgolf en saamgestelde empiriese modus ontladingstegnieke. Die LDV was vergelyk met die PV vir algemene biomediese gebruike en daar was gevind dat dit vergelykbare akkuraatheid het. Die hartklanksiklusse van elke deelnemer is gesegmenteer deur EKG data en 'n eenvoudskromme te kombineer. Frekwensiegebiedskenmerke is uit elke hartsiklus onttrek en in 'n k-naastebuurpunt klassifiseerder ingevoer. Daar is tot die gevolgtrekking gekom dat die LDV deel van 'n outonome, kontaklose beluisteringstelsel kan uitmaak.
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Thompson, A. J. "Health status at twelve years in children who were intensively studied by antenatal umbilical artery Doppler ultrasonography". Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368457.
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McBrien, A. H. "Evaluation of the antenatal diagnosis of congenital heart disease by ultrasonographic examination before and after specialised training". Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517225.
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Nakao, Shunichiro. "Evaluating the Impact of Point-of-Care Ultrasonography on Patients with Suspected Acute Heart Failure or Chronic Obstructive Pulmonary Disease in the Emergency Department: A Prospective Observational Study". Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/38029.
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Background: Acute heart failure and chronic obstructive pulmonary disease (COPD)
exacerbation are common, and are sometimes difficult to differentiate in the emergency
department (ED).
Objectives: To determine the clinical impact of Point-of-Care Ultrasonography (POCUS)
in ED patients with suspected acute heart failure or COPD.
Methods: We conducted a prospective health records review with 1:3 matching, and
analyzed time to events using time-dependent Cox regression analyses, classification
performance, and adverse events.
Results: There were 81 patients with lung POCUS and 243 matched patients. No
differences were found in ED length of stay or length of care, nor adverse events.
Significance was found for time to treatment (P=0.03). Lung POCUS had high sensitivity
(92.5%) and specificity (85.7%) for identifying acute heart failure.
Conclusions: Lung POCUS could result in faster treatments for patients with suspected
acute heart failure and COPD, and has high accuracy in identifying acute heart failure.
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Oliveira, Eloína Nunes. "Validação da ultra-sonografia em relação à Tomografia computadorizada na determinação de gordura abdominal em pacientes coronariopatas". reponame:Repositório Institucional da FIOCRUZ, 2002. https://www.arca.fiocruz.br/handle/icict/5888.
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Submitted by Ana Maria Fiscina Sampaio (fiscina@bahia.fiocruz.br) on 2012-11-27T19:08:40Z
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Eloina Nunes de Oliveira Validacao da ultra... 2002.pdf: 56743053 bytes, checksum: 8de974eee276ef14038c01e971d6e751 (MD5)Made available in DSpace on 2012-11-27T19:08:40Z (GMT). No. of bitstreams: 1 Eloina Nunes de Oliveira Validacao da ultra... 2002.pdf: 56743053 bytes, checksum: 8de974eee276ef14038c01e971d6e751 (MD5) Previous issue date: 2002
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, Bahia, Brasil
Como fator de risco cardiovascular, a distribuição de gordura corporal é provavelmente mais significante do que o aumento de peso por si só. A quantificação de adiposidade visceral é de grande valor, pois esse tecido tem um papel importante em agregar os fatores de risco metabólicos. 0 padrão ouro para avaliação quantitativa da adiposidade visceral é a Tomografia Computadorizada (TC). 0 uso dessa técnica na pesquisa de gordura visceral é limitado devido ao equipamento necessário, alto custo e exposição à radiação ionizante. Em estudos clínicos e epidemiológicos a medida da cintura é estimativa mais freqüentemente usada para gordura abdominal visceral. Apesar dessa medida mostrar uma boa correlação com a medida de gordura abdominal visceral pela TC, ela é menos precisa e fortemente associada com índice de massa corpórea. A ultra-sonografia (LIS) tem sido proposta como uma técnica não invasiva, de baixo custo, para avaliação de gordura abdominal visceral. Objetivos: Validação do uso da ultra-sonografia na determinação de gordura abdominal em pacientes coronariopatas. Material e Métodos: Neste estudo observacional foram determinadas as espessuras abdominais subcutâneas e viscerais através da ultra-sonografia e áreas abdominais subcutâneas e viscerais pela TC, em uma população de coronariopatas e dislipidêmicos, constituída de 28,3% de mulheres e 71,1% de homens, idade média de 56,8 anos (32-81 anos), encaminhada pelo ambulatório de cardiopatia isquémica e dislipidemia (ACID) do Hospital Universitário Professor Edgar Santos (HUPES). Todos os pacientes foram submetidos a exame clínico, medidas antropométricas, US e TC. Resultados: A espessura abdominal visceral, medida pela US, mostrou correlação positiva significativa com área abdominal visceral pela TC (r = 0,73; p < 0,0001). Para a predição da área visceral pela TC foi realizada análise de regressão múltipla sendo que as variáveis de maior correlação foram compostas pelas medidas de espessura abdominal visceral, a medida da cintura e idade (r^ = 0,69; p < 0,001). Conclusões: Em coronariopatas e dislipidêmicos a US mostrou-se método válido na determinação de gordura abdominal visceral. É possível determinar através da US a área de gordura abdominal visceral com grau de determinação de quase 70%.
Fat distribution is probably more significant tlian weight increase per se as a cardiovascular risk factor. Because visceral adiposity has a central role in the cluster of metabolic risk factors, its quantification is of extreme importance. Currently, Computed Tomography (CT) is the gold standard for quantitative assessment of intra-abdominal adipose tissue. This technique is obviously limited because of high cost and radiation exposure. In clinical and epidemiological studies the waist circumference is the most often used estimation of intra-abdominal adipose tissue. Although, this measure shows a good correlation with CT-measured intra-abdominal adipose tissue, it is less precise and less strongly associated with body mass index. Ultrasonography has been proposed as a noninvasive technique to accurately measure intra- abdominal adipose tissue. Objective: Validity of use of ultrasonography for 11 the determination of abdominal adipose tissue in patient with coronary heart disease. Material and Methods: This observational study was carried out among 60 patients with coronary heart disease and dyslipidemia. Subcutaneous and intra-abdominal adipose tissue thickness were measured by ultrasonography, and subcutaneous and intra-abdominal adipose tissue areas by CT. All patients were submitted to clinical examination, anthropometry, ultrasonography and CT evaluation. Results: The mean age of the study group was of 56,8 ± 10,2, the sex distribution was of 28,3% women and 71,1% men. The thickness of intra-abdominal adipose tissue measured by ultrasonography showed significant positive correlation with intra-abdominal adipose tissue area by CT (r = 0,73; p <0,000). Multiple regression analysis was applied for the prediction of intra-abdominal area by CT. The variables of better correlation were composed of the measures of intra-abdominal adipose tissue thickness, the measure of the waist circumference and age (r^ = 0,69; p <0,001). The area under the Receiver Operating Characteristic Curve (ROC) was 0,81 (IC95% de 0,68-0,95). Conclusions: In patients with coronary heart disease, ultrasonography is a good method to diagnose and to determine intra-abdominal adipose tissue. It is possible to determine through ultrasonography and anthropometry, the area of intra-abdominal tissue with a degree of precision of almost 70%.
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"Real-time three-dimensional ultrasound in obstetric application". Thesis, 2010. http://library.cuhk.edu.hk/record=b6075051.
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Conotruncal anomalies are the leading causes of cyanotic congenital heart disease. We attempted to use live xPlane imaging of ductal arch view and in-plane view of IVS to screen the fetal conotruncal anomalies in 200 fetuses. There were 152 normal cases, 25 conotruncal anomalies and 23 other types of fetal CHDs were involved in this study. The visualization rate of the normal ductal arch view and in-plane view of IVS with live xPlane imaging was 100% (152/152), 100% (152/152) in normal cases, 8% (2/25), 12% (3/25) in conotruncal anomalies and 69.7% (16/23), 73.9% (17/23) in non-conotruncal CHDs, respectively. The visualization rate of abnormal ductal arch and in-plane view in conotruncal anomalies was much higher than that in non-conotruncal anomalies (P<0.001). Therefore, it may be a useful tool for the assessment and diagnosis of fetal conotruncal anomalies.In conclusion, real-time 3DE is a novel and promising technique to perform the prenatal examination, both the fetal heart and other system. It represents the future of 3D ultrasound and will become a useful tool for prenatal screening and diagnosis.
This thesis summarized real-time 3D ultrasound in obstetric application. With the introduction of matrix transducer, 3D scanning the fetus in real time became available.
We attempted to use real-time 3D ultrasound in obstetrics outside the fetal heart. We evaluated the feasibility of using real-time 3D ultrasound to assist in obtaining a true midsagittal view in first trimester. Eight sonographers, including FMF-certified and non FMF-certified operators, were asked to perform ultrasound examinations on five patients and forty patients were examined in total. It showed that the deviation from true midsagittal view was reduced greatly with the guidance of live xPlane imaging. Real-time 3D ultrasound can improve the accuracy of acquisition of a defined sonographic plane, and reduce the difference in performance between operators who are formally certified or not.
We demonstrated a novel method to visualize the aortic and ductal arch with live xPlane imaging. The visualization rate is 100%. Ductal arch view can be visualized by placing the reference line through pulmonary artery and descending aorta and aortic arch view can be acquired by putting the reference line along the transverse view of aortic arch and descending aorta on the 3VT view with live xPlane imaging. Therefore, live xPlane imaging is an easy and feasible method for real-time imaging of the ductal and aortic arch.
We explored the feasibility to perform the fetal heart screening using real-time 3DE with live xPlane imaging. We developed and reported the methodology of acquiring and examining the screening planes of the fetal heart with live xPlane imaging. The procedure was simple and straight. When performing the fetal heart screening with live xPlane imaging, we just need display the apical four-chamber view and mid-sagittal view of fetal upper thorax and other thing could be done by moving the reference line. The overall detection of four cardiac screen planes can reach 100%.
We explored to evaluate the entire fetal IVS with both live xPlane imaging and live 3D imaging. We can successfully assess the entire IVS in most fetuses (153/154). We also compared the images acquired by real-time 3DE and STIC in this thesis. It showed that less motion artifact encounters with real-time 3DE and the image quality of real-time 3DE is similar to STIC volume acquired from the sagittal view (P>0.05) and superior to STIC volume from the four-chamber view (P<0.05). Therefore, real-time 3DE can be used to display the lateral view of the fetal IVS, and potentially may be a useful tool for the assessment and diagnosis of fetal VSDs.
Xiong, Yi.
Adviser: Tzekin Lau.
Source: Dissertation Abstracts International, Volume: 73-02, Section: B, page: .
Thesis (Ph.D.)--Chinese University of Hong Kong, 2010.
Includes bibliographical references (leaves 116-138).
Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.
Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [201-] System requirements: Adobe Acrobat Reader. Available via World Wide Web.
Abstract also in Chinese.
Livros sobre o assunto "Heart diseases – ultrasonography"
1
Caroline, Westgate, ed. A guide to cardiac ultrasound. London: King & Wirth, 1985.
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2
Mayer, William V. Work of the heart. 2a ed. Chicago, Ill: Encyclopaedia Britannica Educational Corp., 1988.
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3
Kacharava, Andro G. Pocket guide to echocardiography. Chichester, West Sussex: John Wiley & Sons, 2012.
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4
1936-, Berger Marvin, ed. Doppler echocardiography in heart disease. New York: Dekker, 1986.
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5
Rasalingam, Ravi, Majesh Makan e Julio E. Pérez. The Washington manual of echocardiography. Editado por Washington University (Saint Louis, Mo.). School of Medicine. Philadelphia: Wolters Kluwer/Lippincott Williams & Wilkins Health, 2013.
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6
Ryding, Alisdair. Essential echocardiography. Edinburgh: Churchill Livingstone, 2008.
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7
Ryding, Alisdair. Essential echocardiography. Edinburgh: Churchill Livingstone, 2008.
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8
Houghton, Andrew R. Making sense of echocardiography: A hands-on guide. London: Hodder Arnold, 2009.
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9
Jos, Roelandt, ed. Color Doppler flow imaging and other advances in Doppler echocardiography. Dordrecht: Martinus Nijhoff, 1986.
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10
John, Chambers. Clinical echocardiography. London: BMJ Pub. Group, 1995.
Encontre o texto completo da fonteCapítulos de livros sobre o assunto "Heart diseases – ultrasonography"
1
Li, Yan, Karen L. Fang, Zhi Huang, Yun Lu, Bin Zhang e Yali Yao. "Advancements in Cardiovascular Diagnostics". In Coronary and Cardiothoracic Critical Care, 1–19. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8185-7.ch001.
Texto completo da fonteResumo:
The cardiology diagnostic are the methods of identifying current or past heart conditions, which can advise caregivers on patient diagnosis and provide a proper therapy plan, nowadays couple new diagnostic methods have been developed and some of them like radionuclide myocardial perfusion imaging, coronary computed tomography angiogram, cardiac magnetic resonance imaging, intravascular ultrasonography, optical coherence tomography, intravascular thermography, intravascular elastography, and near-infrared spectroscopy have been approved for clinical use. Not only the advanced technologies, the new biomarkers, and genetic markers may provide new potential targets for the diagnosis, therapy, and prevention of heart diseases.
2
Li, Yan, Karen L. Fang, Zhi Huang, Yun Lu, Bin Zhang e Yali Yao. "Advancements in Cardiovascular Diagnostics". In Emerging Applications, Perspectives, and Discoveries in Cardiovascular Research, 194–211. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-2092-4.ch011.
Texto completo da fonteResumo:
The cardiology diagnostic are the methods of identifying current or past heart conditions, which can advise caregivers on patient diagnosis and provide a proper therapy plan, nowadays couple new diagnostic methods have been developed and some of them like radionuclide myocardial perfusion imaging, coronary computed tomography angiogram, cardiac magnetic resonance imaging, intravascular ultrasonography, optical coherence tomography, intravascular thermography, intravascular elastography, and near-infrared spectroscopy have been approved for clinical use. Not only the advanced technologies, the new biomarkers, and genetic markers may provide new potential targets for the diagnosis, therapy, and prevention of heart diseases.
3
"16 Family History of Congenital Heart Disease". In Ultrasonography in Obstetrics and Gynecology, editado por Carol B. Benson e Edward I. Bluth. Stuttgart: Georg Thieme Verlag, 2008. http://dx.doi.org/10.1055/b-0034-71163.
Texto completo da fonte
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Willett, Renée, Becky Riggs e Erik Su. "Bedside Ultrasonography in the Pediatric Intensive Care Unit". In Critical Heart Disease in Infants and Children, 437–51. Elsevier, 2019. http://dx.doi.org/10.1016/b978-1-4557-0760-7.00035-8.
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Davis, Patricia H., e Jeffrey D. Dawson. "Relationship between Cardiovascular Risk Factors and Carotid Artery Intimal-Medial Thickness". In Pediatric Prevention of Atherosclerotic Cardiovascular Disease, 84–106. Oxford University PressNew York, NY, 2006. http://dx.doi.org/10.1093/oso/9780195150650.003.0005.
Texto completo da fonteResumo:
Abstract In older adults, measurement of carotid artery intimal-medial thickness (IMT) has gained acceptance as a noninvasive, inexpensive method to assess the extent of atherosclerosis. Several pieces of evidence support the validity of this method. Measurements of carotid IMT with ultrasonography in vivo (Fig. 5.1) correlate well with pathologic measurements (Schulte-Altedorneburg et al., 2001) and are reproducible (Riley et al., 1992). Increased carotid IMT and the rate of change of carotid IMT over time are significantly related to known cardiovascular risk factors (Chambless et al., 2002). Carotid IMT is positively associated with incident myocardial infarction (MI) (Salonen and Salonen, 1993; Bots et al., 1997; Chambless et al., 1997; O’Leary et al., 1999), and stroke (Chambless et al., 2000) and this association persists after adjustment for known cardiovascular risk fac tors. Similarly, increased carotid IMT has been associated with a reduction in the ankle-arm index, a marker of peripheral vascular disease (Bots et al., 1994). The Writing Group II of the American Heart Association Prevention Conference V concluded that measurement of carotid IMT in asymptomatic persons over 45 years of age adds incremental information to traditional risk factor assessment (Greenland et al., 2000). In addition, progression of the atherosclerotic lesion by serial measurements of carotid IMT is used as an end point in clinical trials of therapies to retard the atherosclerotic process (Mukherjee and Yadav, 2002).
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Tartaglia, Marco, e Bruce D. Gelb. "RAS Signaling Defects and Noonan Syndrome". In Inborn Errors Of Development, 620–31. Oxford University PressNew York, NY, 2008. http://dx.doi.org/10.1093/oso/9780195306910.003.0063.
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Abstract Moonan syndrome (OMIM 163950) is a pleomorphic disorder affecting the cardiovascular, craniofacial, skeletal, hematopoietic, lymphatic, and central nervous systems. It can result from mutations in the PTPN11 gene, which encodes the protein tyrosine phosphatase (PTP), Src homology 2 (SHP-2), or the KRAS gene, which encodes a RAS GTPase. The disorder is generally transmitted as an autosomal dominant trait, although many cases result from de novo mutations. Defects in the PTPN11 gene, which resides at chromosomal band 12q24.1, account for approximately 50% of cases. The more than 60 mutations that have been reported are mostly missense changes, with the vast majority affecting residues clustering at the interface between the N-terminal SH2 and PTP domains. Mutant SHP-2 proteins have a gain of function, usually through effects on the molecular switching mechanism important for activating/inactivating this enzyme. Missense PTPN11 mutations also recur in LEOPARD syndrome (MIM 151100), which is clinically related to Noonan syndrome. These mutations cause loss of catalytic activity of the phosphatase and are hypothesized to have dominant-negative effect on the wild-type protein. Defects in the KRAS gene account for approximately 2% of Noonan syndrome cases and engender gain of function in RAS signaling through reduced KRAS GTPase activity or increased GDP/GTP dissociation rate. Clinical manifestations of Noonan syndrome include a typical dysmorphic appearance, congenital heart defects [particularly pulmonic stenosis (PS)] or hypertrophic cardiomyopathy (HCM), webbing of the neck, short stature, cryptorchidism, eye abnormalities, and skeletal anomalies such as pectus deformities, cubitus valgus, and vertebral anomalies. A minority of affected individuals has bleeding diathesis, hearing loss, and mental retardation. Diagnosis is made by clinical examination. Prenatal diagnosis of Noonan syndrome may be suspected in the presence of ultrasonographic findings such as nuchal edema or cystic hygroma. Therapy in the neonatal period and infancy involves discovering and treating the cardiac disease and managing the feeding problems. Orchidopexy is indicated for undescended testes. Growth hormone (GH) therapy has been used to ameliorate the short stature. Preventive pediatric care is appropriate for the hematologic and developmental issues.