Дисертації з теми "Ultrasonics in obstetrics Victoria"
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Brock, Sheila Anne. "The role of obstetric ultrasound in primary health care at a secondary hospital in South Africa." Thesis, Peninsula Technikon, 2000. http://hdl.handle.net/20.500.11838/1558.
Повний текст джерелаUltrasound has, until recently, been regarded as a sophisticated diagnostic modality, reserved for tertiary health care. In reality, it is a cost-effective, reliable and safe modality that is highly suited to primary health care. Secondary level centres provide the only access to ultrasound for many of the obstetric primary health care patients, as primary health care has limited ultrasound resources. The increasing monthly statistics, at one secondary centre, bares witness to the need for ultrasound in primary health care. At the time of this study ultrasound scans were not routine for every obstetric patient. Experience indicates that only the patients who clinically suggest a possible risk are referred for ultrasound to confirm, or rule out problems. However, there are a number of complications, which have little or no early clinical indications. [Palmer, 1995:285] This means that many of the problems encountered are often in late gestation and they have a marked bearing on the obstetric management of the patient. This was a retrospective study, of approximately 1000 patients attending an ultrasound department at a secondary centre. Most of the obstetric patients that were sent for an ultrasound examination came from the primary health care centres in the region.
Durbin, Sharon A. "Understanding the effects of obstetrical ultrasound." Online version, 1999. http://www.uwstout.edu/lib/thesis/1999/1999durbin.pdf.
Повний текст джерелаYang, Fang, and 杨芳. "Application of three-dimensional ultrasonography in obstetrics." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hdl.handle.net/10722/196083.
Повний текст джерелаpublished_or_final_version
Obstetrics and Gynaecology
Doctoral
Doctor of Philosophy
Castle, Bruce M. "The role of real-time ultrasound in the assessment and management of preterm labour." Doctoral thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/26624.
Повний текст джерелаPoggenpoel, Elizabeth J. "Primary obstetric ultrasound : comparing a detail ultrasound only protocol with a booking ultrasound protocol." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4326.
Повний текст джерелаEdwards, Warren S. "A low-cost high-performance three-dimensional ultrasound system and its clinical application in obstetrics /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/5906.
Повний текст джерелаChan, Fung-yee. "Doppler ultrasound is a useful investigatory tool in the field of obstetrics & gynaecology." [Hong Kong] : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14804566.
Повний текст джерелаCollins, Sally. "Development of placental ultrasound markers to screen for the term, small for gestational age (SGA) baby." Thesis, University of Oxford, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.711642.
Повний текст джерелаGallagher, Francis J. "Spectral analysis of blood velocity in the human fetus /." Online version of thesis, 1995. http://hdl.handle.net/1850/11811.
Повний текст джерела陳鳳儀 and Fung-yee Chan. "Doppler ultrasound is a useful investigatory tool in the field of obstetrics & gynaecology." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31981525.
Повний текст джерелаBasir, Ghazala Sikandar. "Endometrial assessment by ultrasonography, Doppler velocimetry and morphometry in women undergoing assisted reproduction treatment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31222201.
Повний текст джерелаRiddle, Bethany. "Normative practices and normative identities a critical feminist investigation of preganacy ultrasound /." 2005. http://cdm256101.cdmhost.com/cdm-p256101coll31/document.php?CISOROOT=/p256101coll31&CISOPTR=76096.
Повний текст джерелаTaylor, Janelle Sue. "Mediating reproduction : an ethnography of obstetrical ultrasound /." 1999. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:9943123.
Повний текст джерелаKumar, Sanjalesh. "Obstetric sonography in Fiji : review of the current practice at an urban public hospital. A thesis submitted in partial fulfilment of the requirements for the degree of Master (Hons.) of Health Science (Medical Radiation Technology), Unitec New Zealand /." Diss., 2008. http://www.coda.ac.nz/cgi/viewcontent.cgi?article=1011&context=unitec_hs_di.
Повний текст джерелаVan, Dyk Barbara. "Potential benefits of routine ultrasound screening in the mid-trimester of pregnancy, at primary health care level in Gauteng." Thesis, 2012. http://hdl.handle.net/10210/5543.
Повний текст джерелаIt is difficult to manage a pregnancy when fetal age, health status or potential pregnancy risks are not known. The aim of this study was to assess the impact of routine ultrasound screening as compared to selective use of ultrasound in the mid-trimester of pregnancy, on women using South African government health services. The three objectives investigated included assessment of the availability of reliable menstrual histories in the study population, the influence of ultrasound dating on obstetric management and the effect of ultrasound on pregnancy outcome due to the early detection of high risk pregnancies. A cluster randomised trial of 962 women was performed to test the hypothesis that midtrimester routine ultrasound screening in low risk pregnancies would result in improved antenatal care and perinatal outcome. Groups of eligible pregnant women were randomly selected to have either a routine scan followed by normal antenatal care or routine antenatal care which only allows for the selective use of ultrasound, in line with South African Antenatal Care Policy. Statistical analysis of the results confirmed that ultrasound dating is a more accurate predictor of the expected date of delivery when compared to other dating methods. Improved pregnancy dating resulted in a significant reduction in induction of labour for post-term pregnancy in the ultrasound screening group, suggesting a positive effect of ultrasound screening on obstetric management. No improvement was demonstrated in perinatal morbidity or mortality. The early detection of anomalous fetuses only led to one therapeutic abortion. The study did not possess the statistical power to demonstrate improved outcomes when multiple pregnancies were detected early in pregnancy. Currently there appears to be no urgent need to implement a routine antenatal screening programme in the Gauteng public health sector. In view of the fact that a third of the participants indicated that they were unsure of menstrual dates, and one third of the participants in the ultrasound screening group presented with an unreliable menstrual history, it is proposed that unsure dates be considered as a valid indication for the selective use of ultrasound in mid-trimester pregnancy.
Casmod, Yasmin. "The sensitivity of uterine artery spectral Doppler screening in predicting pre-eclampsia and foetal growth restriction." Thesis, 2014. http://hdl.handle.net/10210/9140.
Повний текст джерелаMonitoring the growth and wellbeing of the foetus is a major purpose of antenatal care. The use of diagnostic ultrasound to assess foetal wellbeing has become an important part of prenatal care in both low and high risk pregnancies. Pre-eclampsia and foetal growth restriction (FGR) remains important causes of maternal and perinatal mortality and morbidity. Pre-eclampsia is characterised by an abnormal vascular response to placentation and is a multisystem disorder of unknown cause specific to pregnancy which affects the health of both mother and fetus. Prep-eclampsia complicates between 2 and B % of all pregnancies and is the second most common cause of maternal deaths in the developing world. The aim of this study was to assess the sensitivity of uterine artery spectral Doppler screening in the prediction of pregnancies with a high risk of developing pre-eclampsia or FGR before the clinical onset of the disease. The research objectives were to: 1) Determine the sensitivity of first and second trimester uterine artery spectral Doppler assessment in predicting pre-eclampsia or FGR Identify associations between normal and abnormal uterine artery Doppler waveforms and pregnancy outcomes. 2) Determine the most effective Doppler indices 3) Develop ultrasound management guidelines The data was statistically analyzed to determine the sensitivity of uterine artery Doppler screening. In this study uterine artery Doppler screening performed well. in the risk assessment of the most severe cases of pre-eclampsia and FGR. A larger prospective multicenter trial in South Africa is long overdue and therefore a follow-up study to assess Doppler as a screening tool in a high risk population, as per the guidelines formulated.
Siphugu, Steven Mbonalo. "The efficiency of ultrasonorgraphy in monitoring ovarian structures and foetal development in goats, sheep and cattle as verified through laparoscopy and laparotomy." Diss., 2018. http://hdl.handle.net/11602/1148.
Повний текст джерелаDepartment of Animal Science
The main purpose of this study was to assess the efficiency of ultrasonography in monitoring reproductive organs, pregnancy diagnosis, and foetal gender identification and to verify its reliability by laparoscopy and laparotomy, where applicable. Reproductive organs, pregnancy diagnosis and gender of the foetus were examined by A-mode ultrasound using 3.0 - 8.0 MHz trans-rectal transducer. A Sony Olympus Model laparoscope with a camera transducer was used to monitor the reproductive organs and pregnancy diagnosis. In monitoring the follicular dynamics, daily ultrasonography (ULTS) scanning was done for 17 days in sheep and for 21 days in both goats and cattle. Follicles of diameter ≥ 3 mm were selected for analysis of growth, ovulation and regression. For determining the efficiency of the techniques, laparoscopy (LAPSC) and laparotomy (LAPT) were used on days 3 and 10 of the goats and sheep oestrous cycle. The follicles were grouped into three categories according to their diameter as 3 - 4.9 mm, 5 - 7.9 mm and ≥ 8 mm, whereas the follicles of cattle were grouped as 3 - 4.9 mm, 5 - 9.9 mm and ≥ 10 mm. Early pregnancy diagnosis examinations were carried out from day 18 post insemination until pregnancy was confirmed. Foetal gender examinations were conducted from day 40 of pregnancy until the day the gender of the foetus was confirmed. Follicular development was accompanied by the occurrence of waves of follicular growth at different period of the oestrous cycle. The first follicular wave emerged on day 1.0 ± 0.4 in goats, 1.2 ± 0.4 in sheep and 2.2 ± 0.4 in cattle. The maximum diameter of the dominant follicles of observed follicular waves in goats was 7.3 ± 0.4 mm, 6.6 ± 0.2 mm, 7.3 ± 0.2 mm; in sheep was 6.4 ± 0.4 mm, 6.6 ± 0.4 mm and 6.7 ± 0.7 mm and in cattle was 13.1 ± 0.8 mm, 14.2 ± 0.6 mm and 15.7 ± 0.6 mm in wave 1, 2 and 3, respectively. However, the maximum size of the dominant follicle of the ovulatory wave in cattle was larger than the dominant follicles of both first and second waves, but in goats and sheep the dominant follicles were of similar size throughout the waves. In cattle, the ovulatory wave was shorter (p ˂ 0.05) than the duration of the first and second waves, while in sheep and goats were similar throughout the waves. In goats the total number of follicles counted in right and left ovaries under category 3 - 4.9 mm was lower with ULTS and LAPSC than with LAPT method (p ˂ 0.05). In sheep the mean number of follicles between 3 - 4.9 mm category in both right and left ovaries were different (p ˂ 0.05) between ULTS and LAPT. However, for categories 5 - 7.9 mm and ≥ 8 mm in both goats and sheep the mean numbers of follicles observed by all techniques were similar (p ˃ 0.05). In goats, pregnancy diagnosis accuracy improved from zero percent on day 18 to 100% on day 26 - 28, in sheep pregnancy diagnosis was 40% on day 18 and improved to 100% on day 20 - 22 vi of gestation. In cattle accuracy of pregnancy diagnosis was not possible at day 18 and gradually increased to 100% on day 30 - 32 of gestation. Out of 5 (100%) goat’s foetuses whose gender was determined, the diagnosis was correct in 100% (3/3) of the male foetuses and 100% (2/2) of the female foetuses. In sheep two foetuses were sexed as males while the other three were sexed as females and were both 100%. Out of 60% (3/5) of foetuses examined in cattle, 1 (100%) was identified as male and the remaining 2 (100%) were identified as females. The results obtained confirmed that the accuracy for foetal gender by ultrasonography was 100% in all foetuses observed. The current study demonstrated that trans-rectal ultrasonography examination is an efficient method for monitoring follicular dynamics, diagnosing pregnancy and foetal gender identification and that it is as reliable as laparoscopy and laparotomy where they were applied together.
NRF