Littérature scientifique sur le sujet « Pressure Volume catheter »
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Articles de revues sur le sujet "Pressure Volume catheter"
Imbesi, S. G., et C. W. Kerber. « Pressure Measurements across Vascular Stenoses ». Interventional Neuroradiology 5, no 2 (juin 1999) : 139–44. http://dx.doi.org/10.1177/159101999900500205.
Texte intégralAntony, Kathleen, Diana Racusin, Michael Belfort et Gary Dildy. « Under Pressure : Intraluminal Filling Pressures of Postpartum Hemorrhage Tamponade Balloons ». American Journal of Perinatology Reports 07, no 02 (avril 2017) : e86-e92. http://dx.doi.org/10.1055/s-0037-1602657.
Texte intégralBrown, I. G., P. A. McClean, P. M. Webster, V. Hoffstein et N. Zamel. « Lung volume dependence of esophageal pressure in the neck ». Journal of Applied Physiology 59, no 6 (1 décembre 1985) : 1849–54. http://dx.doi.org/10.1152/jappl.1985.59.6.1849.
Texte intégralMukerji, Nitin, Julian Cahill, Desiderio Rodrigues, Savithru Prakash et Roger Strachan. « Flow dynamics in lumboperitoneal shunts and their implications in vivo ». Journal of Neurosurgery 111, no 3 (septembre 2009) : 632–37. http://dx.doi.org/10.3171/2009.2.jns08912.
Texte intégralBrand, Paul H., Nianning Qi, Patricia J. Metting et Steven L. Britton. « A self-powered constant infusion device for use in unrestrained rats ». American Journal of Physiology-Heart and Circulatory Physiology 278, no 6 (1 juin 2000) : H2157—H2162. http://dx.doi.org/10.1152/ajpheart.2000.278.6.h2157.
Texte intégralIto, H., M. Takaki, H. Yamaguchi, H. Tachibana et H. Suga. « Left ventricular volumetric conductance catheter for rats ». American Journal of Physiology-Heart and Circulatory Physiology 270, no 4 (1 avril 1996) : H1509—H1514. http://dx.doi.org/10.1152/ajpheart.1996.270.4.h1509.
Texte intégralSzwarc, Richard S., et Howard A. Ball. « Simultaneous LV and RV volumes by conductance catheter : effects of lung insufflation on parallel conductance ». American Journal of Physiology-Heart and Circulatory Physiology 275, no 2 (1 août 1998) : H653—H661. http://dx.doi.org/10.1152/ajpheart.1998.275.2.h653.
Texte intégralSzwarc, R. S., D. Laurent, P. R. Allegrini et H. A. Ball. « Conductance catheter measurement of left ventricular volume : evidence for nonlinearity within cardiac cycle ». American Journal of Physiology-Heart and Circulatory Physiology 268, no 4 (1 avril 1995) : H1490—H1498. http://dx.doi.org/10.1152/ajpheart.1995.268.4.h1490.
Texte intégralBiais, Matthieu, Karine Nouette-Gaulain, Alice Quinart, Stéphanie Roullet, Philippe Revel et François Sztark. « Uncalibrated Stroke Volume Variations Are Able to Predict the Hemodynamic Effects of Positive End-Expiratory Pressure in Patients with Acute Lung Injury or Acute Respiratory Distress Syndrome after Liver Transplantation ». Anesthesiology 111, no 4 (1 octobre 2009) : 855–62. http://dx.doi.org/10.1097/aln.0b013e3181b27fb2.
Texte intégralYaksh, T. L., P. A. Durant et C. R. Brent. « Micturition in rats : a chronic model for study of bladder function and effect of anesthetics ». American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 251, no 6 (1 décembre 1986) : R1177—R1185. http://dx.doi.org/10.1152/ajpregu.1986.251.6.r1177.
Texte intégralThèses sur le sujet "Pressure Volume catheter"
Carlsson, Camilla. « Development of a thin, soft, single segment conductance catheter for monitoring left ventricular pressure and volume ». Licentiate thesis, KTH, Physics, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1441.
Texte intégralKnowledge of the leftventricular (LV) pressure-volume relation, along withparameters derived from this relation, have led to newpossibilities for the characterisation of cardiac pumpfunction, in both experimental studies and clinicalsettings.
The pressure-volume diagram is apowerful tool for visualising LV performance, but in order tobe clinically useful it is necessary to make plots continuouslyand on-line. The conductance catheter technique offers thispossibility. The conductance catheter system has experiencedgrowing interest among cardiologists, physiologists, surgeons,and anaesthesiologists around the world as a powerful newresearch tool, but the invasiveness of this technique has beena limiting factor for most clinical applications. The catheterneeds to be thinner and softer in order to make this techniquemore suitable for human use.
This thesis reports of a newthin and soft conductance catheter for continuously and on-linemeasurements of LV pressure and volume.
One way to reduce both cathetersize and stiffness is to decrease the number of electrodes onthe catheter. Theoretical calculations shown in this thesisproves that it is possible to obtain the same performance witha single segment catheter as with a five-segment catheter. Thethin catheter has been tested and compared to a commercialfive-segment conductance catheter in animal studies.
We conclude that the thin singlesegment conductance catheter can measure left ventricularvolume and pessure. The regression coefficient between the twomethods is good independent of loading condition and duringbaseline conditions the catheters produce very similar volumecurves. During preload reduction the estimated volume reductionis different in the two systems.
Our thin catheter does notdisturb the heart's normal electrophysiology, neither by thecatheter current nor by any mechanical stimuli. The resultsdemonstrates that our thin, soft, single segment conductancecatheter has performance characteristics which warrant furtherdevelopment, with the goal to make the method available forhuman use.
Loeffler, Kathryn Rose. « Development of an implantable system to measure the pressure-volume relationship in ambulatory rodent hearts ». 2012. http://hdl.handle.net/2152/20018.
Texte intégraltext
Chen, Chieh-En, et 陳傑恩. « A Real-time Ventricular Pressure-Volume Loop Measurement System with the Conductance Catheter ». Thesis, 2008. http://ndltd.ncl.edu.tw/handle/04084867098924944471.
Texte intégral國立成功大學
電機工程學系碩博士班
96
Electrical impedance measurement technique is widely used in biomedical researchers and applications, such as a conductance catheter. The conductance catheter is used to measure real-time ventricular impedance, and then the measured impedance is converted to ventricular volume. While incorporating with pressure signals, a real-time ventricular pressure-volume loop plot can be obtained, which is a standard tool for researchers and doctors to evaluate the cardiac functions. The main purpose of my research is to develop a real-time measurement system for the conductance catheter. Instead of traditional instrument designed with analog elements for processing, a high speed DSP chip, TMS320F2812 made by Texas Instrument, is used to be the core for digital signal processing. Besides, peripheral analog circuits are needed for signal sensing. Moreover, a graphic user interface, implemented by LabView and a data acquisition card, is designed to illustrate the measurement result immediately. Next, some other equipments are designed to verify the system and finally the in-vivo experiment is performed. (1) An emulator that can mimic the special measured voltage signals is constructed. During the system development stage, the emulator is served as a benchmark to test the functionality and bandwidth of the system. (2) A ventricle-imitated environment is constructed that can test if the system can work for real situation. (3) In vivo Rat experiment that can test the system whether it can work for in-vivo measurement. According to the measurement results, the designed system does work well.
RUNGATSCHER, Alessio. « Cardioprotective role of S-Nitroso Human Serum Albuminduring regional myocardial ischemia-reperfusion ». Doctoral thesis, 2010. http://hdl.handle.net/11562/344722.
Texte intégralBACKGROUND: The early period of reperfusion after myocardial ischemia is critical for endothelial dysfunction and the impairment of nitric oxide synthesis plays a critical role. We investigated the cardioprotective effect of S-NO-HSA in a regional myocardial ischemia/reperfusion rat model reproducing clinical scenarios. METHODS AND RESULTS: Male Wistar rats (n: 120) underwent reversible occlusion of the left anterior descending artery for 30 minutes and subsequent reperfusion for 24 hours. The animals were randomly treated with S-NO-HSA (0.3 μmol/kg/h) or human serum albumin (HSA) infusion. The infusion started 15 minutes before the beginning of ischemia in a group (Pre-I) whereas it starter 15 min after the initiation of ischemia in the other group (Post-I). The infusion continued until the first 30 minutes of reperfusion in both groups. Ventricular systolic and diastolic function was evaluated during early and late reperfusion (120 min and 24 h) in vivo at different preloads by a Millar microtip P-V conductance catheter. Hearts were excised after reperfusion to determine infarct size (IS) and area at risk (AR). Biopsies were obtained to measure high-energy phosphates, the expression of endothelial nitric oxide synthase (eNOS) and inducile nitric oxide synthase (iNOS) and the production of NFkB. Treatment with S-NO-HSA had a significative effect in reducing IS (42.2% +/-3.5 vs. 65.3 +/-4.2; p<0.05), the maximum effect is produced when the drug is administered before ischemia. S-NO-HSA effect on LV systolic function is evident considering the preload independent contractility parameters: maximal slope of the systolic pressure increment end diastolic volume relationship (dP/dtMAX-EDV), the slope EMAX of the end-systolic P-V relationship and the preload recruitable stroke work (PRSW) were significantly increased during reperfusion in all treated animals and after ischemia only in the pre-treated group (Pre-I). The LV diastolic function was improved by S-NO-HSA treatment. Tau-Weiss (index of ventricular relaxation), LV end-diastolic pressure (LVEDP) and end-diastolic P-V relationship (EDPVR) (indexes of ventricular stiffness) were significantly decreased with S-NO-HSA both in Pre-I and Post-I group after ischemia and during the 24 h reperfusion. NO supplementation by S-NO-HSA led to partial and in Pre-I group to total preservation of high energy phosphates. Phosphocreatine (CrP) content was preserved in Pre-I group (5.25 +/- 1.65 vs. 1.53 +/- 1.29 μmol/g protein; p < 0.05) and in Post-I group (3.85 +/- 1.12 vs. 1.53 +/- 1.29 μmol/g protein; p < 0.05) after 24 h reperfusion. Indeed energy charge was significantly higher only in the Pre-I group (0.62 +/- 0.07 vs 0.30 +/- 0.07). S-NO-HSA did not change the constitutive eNOS expression (measured by immunohistochemistry), instead it prevent the NFkB activation (quantified by EMSA) and therefore the iNOS mRNA expression (measured by Northern Blot). CONCLUSIONS: S-NO-HSA limits the infarct size, improves diastolic and systolic function and the energetic reserve of the heart after regional myocardial ischemia/reperfusion. These results suggest that S- NO-HSA might be an interesting option for patients undergoing regional myocardial ischemia reperfusion.
Begle, Marilyn Sorenson. « The effect of pediatric suction catheter size and suction pressure on negative airway pressure in paralyzed rabbits ». 1985. http://catalog.hathitrust.org/api/volumes/oclc/12415119.html.
Texte intégralTypescript (photocopy). eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 69-71).
Livres sur le sujet "Pressure Volume catheter"
Alkhalidi, Abdul Hakam Qasem. The conductance catheter as a method for studying factors influencing pressure-volume relationships in the left ventricle of the heart. Birmingham : University of Birmingham, 1999.
Trouver le texte intégralCordioli, Ricardo Luiz, et Laurent Brochard. Respiratory system compliance and resistance in the critically ill. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0074.
Texte intégralMagee, Patrick, et Mark Tooley. Intraoperative monitoring. Sous la direction de Jonathan G. Hardman. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199642045.003.0043.
Texte intégralChapitres de livres sur le sujet "Pressure Volume catheter"
Villanueva, P. A. « Intracranial Balloon Catheter for ICP and Pressure/Volume Monitoring ». Dans Intracranial Pressure VI, 199–202. Berlin, Heidelberg : Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-70971-5_37.
Texte intégralSakata, Tomoki, Renata Mazurek, Spyros A. Mavropoulos, Francisco J. Romeo, Anjali J. Ravichandran et Kiyotake Ishikawa. « Assessing the Effect of Cardiac Gene Therapy Using Catheter-Based Pressure–Volume Measurement in Large Animals ». Dans Methods in Molecular Biology, 313–21. New York, NY : Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2707-5_24.
Texte intégralLeatherman, G. F., T. L. Shook, S. M. Leatherman et Wilson S. Colucci. « Use of a conductance catheter to detect increased left ventricular inotropic state by end-systolic pressure-volume analysis ». Dans Inotropic Stimulation and Myocardial Energetics, 247–56. Heidelberg : Steinkopff, 1989. http://dx.doi.org/10.1007/978-3-662-07908-9_24.
Texte intégralZiegler, Tilman, Karl-Ludwig Laugwitz et Christian Kupatt. « Left Ventricular Pressure Volume Loop Measurements Using Conductance Catheters to Assess Myocardial Function in Mice ». Dans Methods in Molecular Biology, 33–41. New York, NY : Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0668-1_3.
Texte intégralSionis, Alessandro, Etienne Gayat et Alexandre Mebazaa. « Pathophysiology and clinical assessment of the cardiovascular system (including pulmonary artery catheterization) ». Dans The ESC Textbook of Intensive and Acute Cardiovascular Care, sous la direction de Marco Tubaro, Pascal Vranckx, Eric Bonnefoy-Cudraz, Susanna Price et Christiaan Vrints, 115–26. Oxford University Press, 2021. http://dx.doi.org/10.1093/med/9780198849346.003.0012.
Texte intégralWaldmann, Carl, Andrew Rhodes, Neil Soni et Jonathan Handy. « Cardiovascular monitoring ». Dans Oxford Desk Reference : Critical Care, 105–36. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780198723561.003.0007.
Texte intégralPotpara, Tatjana. « Atrial premature beats ». Dans ESC CardioMed, 2050–52. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198784906.003.0477.
Texte intégralMaughan, W. Lowell, et David A. Kass. « Left Ventricular Pressure-Volume Relationships in Patients Measured with the Conductance Catherer and Inferior Vena Caval Balloon Occlusion ». Dans Analysis and Simulation of the Cardiac System — Ischemia, 37–49. CRC Press, 2020. http://dx.doi.org/10.1201/9781003068341-4.
Texte intégralMaughan, W. Lowell, et David A. Kass. « Left Ventricular Pressure-Volume Relationships in Patients Measured with the Conductance Catherer and Inferior Vena Caval Balloon Occlusion ». Dans Analysis and Simulation of the Cardiac System — Ischemia, 37–49. CRC Press, 2020. http://dx.doi.org/10.4324/9781003068341-4.
Texte intégralAbdelwahab Elarref, Mohamed, Mogahed Ismail Hassan Hussein, Muhammad Jaffar Khan et Noran Mohamed Elarif. « Airway Management in Aviation, Space, and Microgravity ». Dans Special Considerations in Human Airway Managements [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96603.
Texte intégralActes de conférences sur le sujet "Pressure Volume catheter"
Majerus, Steve J. A., Brett Hanzlicek, Yaneev Hacohen, Dario Cabal, Dennis Bourbeau et Margot S. Damaser. « A Catheter-Free Bladder Pressure-Volume Sensor ». Dans 2022 IEEE Sensors. IEEE, 2022. http://dx.doi.org/10.1109/sensors52175.2022.9967317.
Texte intégralChia-Ling Wei, Chung-Dann Kan, Jieh-Neng Wang, Yi-Wen Wang et Mei-Ling Tsai. « Impact of stroke volume determination on pressure-volume relations measured by conductance catheter ». Dans 2012 IEEE Biomedical Circuits and Systems Conference (BioCAS 2012). IEEE, 2012. http://dx.doi.org/10.1109/biocas.2012.6418437.
Texte intégralThaijiam, Chanchai, Wutthinan Jeamsaksiri, Karoon Saejok, Charndet Hruanun et Amporn Poyai. « A study of cardiac function using pressure-volume conductance catheter measurements ». Dans 2013 6th Biomedical Engineering International Conference (BMEiCON). IEEE, 2013. http://dx.doi.org/10.1109/bmeicon.2013.6687721.
Texte intégralSalafian, Iman, et Christopher G. Rylander. « Burst, Leakage, and Constant Pressure Infusion Testing of a Convection Enhanced Drug Delivery System for Glioblastoma Treatment ». Dans 2022 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/dmd2022-1060.
Texte intégralZaffora, Adriano, Paola Bagnoli, Roberto Fumero et Maria Laura Costantino. « Computational Fluid Dynamic Analysis of an Instrumented Endotracheal Tube for Total Liquid Ventilation to Optimize Pressure Transducer Positioning ». Dans ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206457.
Texte intégralDischer, Dennis, et Adam Engler. « Mesenchymal Stem Cell Injection After Myocardial Infarction Improves Myocardial Compliance ». Dans ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176754.
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