Global ETD Search
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Showing 1 to 20 of 23 for “"Venous Pressure"”.
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V for Venous Pressure
… and noninvasive methods to measure central venous pressure and central arterial pressure. Force-coupled ultrasound imaging of blood vessels is a process which outputs ultrasound images containing at least one segmented blood vessel of interest and assigns a force to each image. Data is …
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Serial Monitoring of Portal Venous Pressure/flow
… 중 개복 후, 문맥 재관류 후 그리고, 비장절제 후에 경시적으로 문맥압(portal venous pressure, PVP)과 문맥혈류량(portal venous flow, PVF)을 모두 측정한 13명의 생체부분간이식 환자들을 대상으로 하였다. 추가로 이식편의 유순도(compliance: PVF/PVP) 및 이식편의 단위 중량당 유순도(ml/min/mmHg/g)를 계산하였다. 비장절제는 이식편을 심은 후에도 문맥고혈압(>20mmHg)이 지속되거나 술 전 현저한 비 종대 및 전혈구감소증(pancytopenia)을 보인 환자들에 …
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Effect of Lateral Positioning on Central Venous Pressure
… the effects of lateral positioning on central venous pressure. It was hypothesized that lateral positioning would not significantly change the central venous pressure so long as the subjects were placed on the same horizontal plane for both supine and lateral measurements. It was also …
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Central Venous Pressure Reference Points Measured on Post-Mortem Subject
<p>Hemodynamically the central venous pressure should be the same in both the supine and lateral positions. The accurate determination of an external zero reference level corresponding with mid right atrial level would make possible reliable measurements in either position. The purpose of this …
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Development of Medical Device for Volume Status Assessment Using Peripheral Venous Pressure
… technology has improved, small peripheral venous pressure (PVP) signals collected using a transducer on an intravenous catheter can be analyzed to monitor patient volume status. This thesis details the development of an embedded system prototype that quickly and accurately assesses volume …
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Hepatic capacitance reponses to changes in flow and hepatic venous pressure in dogs
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
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A Study of Variability in Locating the External Reference Point for Central Venous Pressure Determination
… the external reference point for central venous pressure (CVP) determinations. In the literature on CVP and on CVP value discrepancies, no reports were found of studies related to variability among medical personnel in locating the point.</p> <p>The nurse participants in this study were …
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Exploration, processing and visualization of physiological signals from the ICU
… explored include heart rate, arterial blood pressure, pulmonary artery pressure, and central venous pressure measurements. Following an introduction to these signals, several methods are proposed for visualizing the data using time and frequency domain techniques. By way of a patient case …
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A Method for Determining the Location of the Central Venous Reference Point in Subjects with Hyperinflation Lung Disease
… measuring the zero reference point of central venous pressure in subjects with hyperinflation lung disease.</p> <p>The primary purpose of this study was to find a method to determine if the external reference point that is currently being used on patients with hyperinflation lung disease …
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Static Mechanical Characteristics of the Small Collecting Vein and the First-Order Venule in the Denervated Small Intestines of the Wistar, Wistar-Kyoto, and Spontaneously Hypertensive Rats
… The first related to the mechanics of the venous system, the second to venous function in hypertension. Since the venous system holds a large fraction of the total peripheral blood volume (and much of this possibly located in the venous microcirculation), and understanding of venule …
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Controlled cross circulation: effects on donor hemodynamics
… ventricular dP/dt max, pulmonary capillary wedge pressure, blood volume, systemic vascular resistance, heart rate, total protein, platelet count, and white blood cell count did not change significantly. Donor cardiac output, end diastolic volume, central venous pressure, stroke volume, mean …
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A Combined In Vivo and In Vitro Approach to the Study of Endotoxemia in Swine
… sustained increases in mean pulmonary artery pressure, pulmonary vascular resistance, pulmonary arterial wedge pressure, heart rate, hematocrit, and the arterial partial pressure of carbon dioxide. Transient increases were also observed in central venous pressure and airway pressure. Transient …
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An eICU/ICU Collaborative to Reduce Sepsis Mortality
… and physicians need to recognize that central venous pressure (CVP) is no longer a recommended or accepted measure of hemodynamic stability. The latest evidence-based practice supports NICOM in conjunction with passive leg raise (PLR) as a foundational guideline for fluid resuscitation. The …
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Maternal Vascular Compliance of Placentas in Rabbits
… placental maternal blood volume. Maternal pressure was measured by means of catheters placed in femoral arteries and veins and recorded on a piethysmograph. Adjustable ties were placed around the maternal inferior vena cava and aorta so that pressures could be altered. A fetus with its …
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Biomechanical and morphological characterization of common iliac vein remodeling: Effects of venous reflux and hypertension
The passive properties of the venous wall are important in the development of venous pathology. Increase in venous pressure due to retrograde flow (reflux) and obstruction of venous flow by intrinsic and extrinsic means are the two possible mechanisms for venous hypertension. Reflux is the …
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Pulmonary Artery and Central Venous Pressures as Prognostic Indicators of Post Lung Transplant Outcome
… between elevated mean pulmonary arterial pressure (mPAP) and central venous pressure (CVP) on poor prognosis in patients undergoing lung transplants has been widely debated. We hypothesized that not only the isolated values of mPAP and CVP, but also the combination of discordant values in …
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Autoregulation of blood flow during sympathetic nerve stimulation in the arteriolar network on cat sartorius muscle.
… constant despite a change in arterial perfusion pressure. Flow regulation is achieved by adjustment of arteriolar caliber to the pressure change. The responses of arterioles are most commonly explained by either the metabolic or myogenic hypothesis. According to the metabolic hypothesis, the …
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Advanced Echocardiographic Imaging In Dogs With Myxomatous Mitral Valve Disease
… clinically useful. The elevation of pulmonary venous pressure caused by MMVD can, in some dogs, cause pulmonary arterial hypertension (PH), which is a risk factor associated with worse outcome in dogs with MMVD. Diagnosis of PH in dogs with MMVD is usually made by estimating pulmonary pressure …
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The design of safety-critical medical infusion devices
Intravenous infusion devices - commonly known as infusion pumps - provide clinicians with mechanisms to automate the accurate dosing of potent fluid therapies to critically ill patients. In critical care applications, fluid dosing must be both accurate and safe since unwanted flow disturbance can …
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The Effect of Compression Stockings and Foot Exercises on Venous Blood Velocity
… compression stockings and foot exercise on venous blood velocity, an exploratory pilot study was conducted. An additional purpose of the investigation was to evaluate the noninvasive doppler ultrasonic flowmeter as a data collecting tool.</p> <p>Fourteen volunteer female subjects, ages 40 to …
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