Thesis (doctoral)--Ludwig-Maximilians-Universität zu München, 1979.

Thesis (M.S.)--University of Wisconsin--Madison, 1976. / eContent provider-neutral record in process. Description based on print version record. Bibliography: leaves 126-135.

Thesis (doctoral)--Rijksuniversiteit te Groningen. / Bijlage: [2] folded leaves.

Thesis (M.S.)--Medical College of Ohio, 2005. / "In partial fulfillment of the requirements for the degree of Master of Science in Biomedical Sciences." Major advisor: Christopher Cooper. Includes abstract. Document formatted into pages: iii, 150 p. Title from title page of PDF document. Title at ETD Web site : Acute renal injury after renal artery stenting. Bibliography: pages 136-147.

Diss. (sammanfattning) Uppsala : Univ., 2004. / Härtill 4 uppsatser.

The impact of percutaneous renal artery angioplasty and stenting (PTRAS) for treatment of atherosclerotic renal artery stenosis (ARAS) is not fully understood, especially in patients with chronic kidney disease (CKD). We performed a retrospective cohort study of patients with significant ARAS and moderate to severe chronic kidney disease (estimated GFR 15-60 ml/min/1.73m2) who were treated medically or with PTRAS. The primary endpoint of this study was change in renal function over the first year after treatment. Secondary endpoints included hemodynamic outcomes, antihypertensive medication doses, end stage renal disease (ESRD), and death. We reviewed all patients with a diagnosis of significant ARAS and impaired GFR treated between 1997-2007 in the Veterans Affairs Connecticut Healthcare System (VACHS). A total of 118 patients met inclusion criteria (71 medical treatment, 47 PTRAS), with an average follow-up of 34 months. The students t-test was used to compare baseline characteristics, as well as renal and hemodynamic endpoints between the two treatment groups. The cohort had a mean age of 73 ± 9 years and average baseline GFR of 37.2 ± 14.9 ml/min/1.73m2. Demographic, clinical and laboratory characteristics at baseline were similar between the two groups, with the exception of higher diastolic blood pressure in the stent group at baseline (75 versus 70 mmHg, p=0.028). No statistically significant difference was found between the two treatment groups for any renal endpoints. After a steady decline in GFR in both the medical treatment and stent groups during the 12 months preceding diagnosis (-4.2 versus -4.0 ml/min/1.73m2, p=0.911), GFR stabilized in both groups over the year following diagnosis (decline in GFR of -1.6 versus -1.4 ml/min/1.73m2, p=0.938). Multivariate models did not reveal an association between treatment modality and percent change in GFR during follow-up. No difference was found in blood pressure outcomes at 12 months between the medical and stent groups. Antihypertensive therapy, measured in defined daily doses (DDDs), was significantly higher in the medical treatment group at 12 months (4.5 versus 3.5 DDDs, p=0.048), but lost significance thereafter. In addition, the number of deaths was significantly higher in the stented group on univariate analysis, although this did not remain significant on multivariable Cox analysis. No difference was found between treatment groups in the development of ESRD. These data suggest that, among patients with ARAS and CKD, medical therapy and renal artery stenting are comparable in stabilizing renal function.

In clinical anatomy, the renal venous system is relatively understudied compared to the arterial system. This investigation aims to clarify and update the variable patterns of the renal venous vasculature using cadaveric human (adult and foetal) and Chacma baboon (Papio ursinus) kidneys and to reflect on its clinical application, particularly in surgery and radiology. The study employed gross anatomical dissection and detailed morphometric and statistical analyses on resin cast and plastinated kidneys harvested from 211 adult, 20 foetal and 10 baboon cadavers. Radiological techniques were used to study intrarenal flow, renal veins and collateral pathways and renal vein valves. The gross anatomical description of the renal veins and its relations were confirmed and updated. Additional renal veins were observed much more frequently on the right side (31 %) than previously documented (15.4%). A practical classification system for the renal veins based on the number of primary tributaries, additional renal veins and anomalies is proposed. Detailed morphometric analyses of the various parameters of the renal veins corroborated and augmented previous anatomical studies. Contrary to standard anatomical textbooks, it was noted that the left renal vein is 2.5 times the length of its counterpart and that there are variable levels of entry of the renal veins into the IVC. Justification for the distal segment of the left renal vein to be termed the surgical trunk, and the proximal segment to be the homologue of the right renal vein is presented. Radiological investigations demonstrated a non-segmental and non-lobar intrarenal venous architecture, an absence of renal vein valves and extensive venous collaterals centering on the left renal vein. These collateral channels, present in the foetus, and persisting in the adult, may be operative and of clinical significance in pathological states. No sex differences and no race differences of note were recorded in this study. The Chacma baboon displayed similar intra-renal venous anatomy. The applied clinical anatomy of these findings with particular regard to renal surgery and uro-radiology is emphasised. / Thesis (M.D.)-University of Natal, 1993.

No description available.

Orientadores: Fernanda Garanhani de Castro Surita, José Guilherme Cecatti / Texto em português e inglês / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-24T19:09:45Z (GMT). No. of bitstreams: 1 Figueira_CamillaOlivares_M.pdf: 1964790 bytes, checksum: 9f40cd5a6b3e989c4a5740350753fde4 (MD5) Previous issue date: 2014 / Resumo: Objetivo: Estudar longitudinalmente os parâmetros Dopplervelocimétricos de artérias fetais e uterinas em mulheres com gestação de baixo risco, construindo intervalos de referência para as artérias uterinas (AUT), umbilical (AU), cerebral média (ACM), e renal (AR), correlacionando esta última com índice de líquido amniótico. Métodos: estudo de coorte longitudinal descritivo em 63 mulheres com gestação de baixo risco no Hospital prof. Dr. José Aristodemo Pinotti ¿ Centro de Atenção Integral à Saúde da Mulher- CAISM/UNICAMP. Foram aferidos o índice de pulsatilidade (IP) e a velocidade sistólica (VS) dos vasos estudados em intervalos de 4 semanas até a 36ª. semana e após, a cada 2 semanas até o parto para construção do intervalo longitudinal dos parâmetros. Para análise estatística foram calculadas as médias por intervalos de idade gestacional, valores dos percentis 5, 50 e 95 para cada parâmetro estudado e ainda, os índices de correlação intra classe e inter classe para cada artéria estudada. Foi estabelecido um nível de significância de 5% e para os procedimentos de análise foram utilizados os programas Epi.Info e SAS. Resultados: Foram construídos intervalos de referência e estabelecidos os percentis 5, 50 e 95 para IP e VS das artérias uterinas, umbilical, cerebral média e renais ao longo da gestação. A evolução dos parâmetros dopplervelocimétricos na população estudada foi semelhante ao padrão encontrado na literatura, entretanto foram observadas algumas diferenças nos valores absolutos. O ILA foi aferido e correlacionado ao Doppler da artéria renal, porém não houve associação entre eles. O Coeficiente de Correlação intra classe mostrou valores adequados pra a maioria dos parametros, indicando boa reprodutibilidade. Conclusões: Foram estabelecidos valores de intervalos de referência para a avaliação de VS e IP das principais artérias estudadas durante a gestação em um seguimento longitudinal. Os intervalos de referência mostram a evolução esperada dos parâmetros de uma gestação de baixo risco e são úteis no acompanhamento das gestações de alto risco. As avaliações intra e inter observador indicaram boa reprodutibilidade do método / Abstract: Objective: To study longitudinal Dopplervelocimetry parameters of uterine and fetal arteries in women of low risk pregnant women, and to develop reference interval values for uterine (UtA), umbilical (UA), middle cerebral (MCA), and renal arteries (RA) and correlate the latter with amniotic fluid index (AFI). Methods: longitudinal cohort study with 63 low risk pregnant women at prof. Dr. José Aristodemo Pinotti Hospital- CAISM/UNICAMP. Pultasility index (PI) and sistolic velocity (SV) of the arteries studied were measured at a 4 week interval until 36 weeks and then every 2 weeks to construct the longitudinal interval. Means for intervals of gestational age and percentiles 5, 50 and 95 were calculated for each parameter and Spearman correlation index was used to correlate the AFI with RA parameters. The Intra Class Correlation Coefficients were also calculated to evaluate the intra and inter observer variability for each vessel. A 5% significance level was established and programs Epi.Info and SAS were used for analysis. Results: Longitudinal reference intervals were constructed and the 5th, 50th and 95th percentiles for PI and SV of uterines, umbilical, middle cerebral and renal arteries established during pregnancy. AFI was measured and correlated with renal artery Doppler, but we found no association between these two parameters. The Intraclass Correlation Coefficient showed adequate values for the majority of the parameters, indicating good reproducibility. Conclusions: We have established a curve of reference intervals for the assessment of SV and PI of the main arteries studied during pregnancy after a longitudinal follow up. Reference intervals show the expected evolution of low risk pregnancy parameters and are useful in monitoring high risk pregnancies. Intra and inter observer evaluation indicated good reproducibility of the method / Mestrado / Saúde Materna e Perinatal / Mestra em Ciências da Saúde

Atherosclerotic renovascular disease (ARVD) is a significant cause of chronic kidney disease (CKD) and is associated with an increased risk for cardiovascular morbidity and mortality. Randomised controlled trials, representing over 2100 patients, have failed to demonstrate any prognostic benefit of percutaneous renal revascularisation when utilised in addition to standard medical therapy. This negative finding has been interpreted in three ways. Firstly, that ARVD may be an association of CKD and not a specific disease process. Secondly, that published studies have recruited low-risk patients who are least likely to benefit from revascularisation. Thirdly, that the focus of treatment for patients with ARVD should be optimal medical therapy, not renal revascularisation. This research project had a series of linked aims. These were investigated in two large patient cohorts that had been accumulated at this centre over the last decade. These cohorts comprised > 900 patients with ARVD, the Salford Renovascular Database (SRVD), and > 2500 patients with all-cause CKD, the Chronic Renal Insufficiency Standards Implementation Study (CRISIS). The first aim was to consider whether ARVD should be considered as a specific cause of CKD. Here risks for death and progression to renal replacement therapy were compared between patients having ARVD as their primary cause of renal failure and patients with other coded causes of CKD. In this analysis, patients with ARVD had a greater risk for death and a lesser risk for RRT than patients with other forms of CKD.The second aim of this thesis was to consider if specific patient sub-groups of ARVD could be identified. Patients in the SRVD with currently accepted high- risk clinical presentations were selected and outcomes compared to patients without a high-risk presentation. In this analysis, presentation with flash pulmonary oedema (but with not refractory hypertension or rapidly declining renal function) was associated with an increased risk for death and cardiovascular event. When the effects of revascularisation were considered in patients with high-risk presentations, a mortality benefit was observed in patients with flash pulmonary oedema and in patients presenting with rapidly declining renal function and refractory hypertension in combination. A separate analysis was performed in the SRVD to consider if a high-risk sub-group of ARVD patients could be identified using laboratory measurements. Here, a classification tree methodology was employed to identify ARVD patients with the greatest risk for progression to end stage kidney disease. The results of this analysis were converted into a practically applicable clinical scoring system incorporating renal function, proteinuria, medications, smoking history and renal artery occlusion. The final aim of this thesis was to describe how the majority of ARVD patients should be treated. In this analysis of the SRVD effects of treatment with anti- platelet and beta-blocker therapy were considered, and shown to be associated with reduced risks for cardiovascular events and death.