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Showing 1 to 20 of 167 for “"arterial pressure"”.
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Mean Arterial Pressure in Acute Ischemic Stroke Study
… evidence available on the validation of blood pressure (BP) measurements obtained in the acute care setting. Despite this, acute stroke practitioners trust and rely on non-invasive blood pressure (NIBP) devices to guide acute ischemic stroke (AIS) patients’ treatment. Although systolic blood …
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Mathematical relation between baroreceptor neural activity and arterial pressure
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1964
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NON-INVASIVE DETERMINATION OF THE HUMAN BRACHIAL ARTERIAL PRESSURE WAVE CONTOUR.
NON-INVASIVE DETERMINATION OF THE HUMAN BRACHIAL ARTERIAL PRESSURE WAVE CONTOUR.
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Development of a new device to measure finger's mean arterial pressure
Measuring the blood pressure is a vital process in order to diagnose the health problem particularly to avoid the heart attack or stroke. Currently, there are two common procedures to test the blood pressure namely via the automated oscillometric device and the manual auscultatory device. Both …
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Application of supervised and unsupervised learning to analysis of the arterial pressure pulse
… applied to the analysis of the shape of the arterial pressure waveform. The arterial pulse is analysed by a selection of both supervised and unsupervised methods of learning. Supervised learning methods are generally better known as regression. Unsupervised learning methods seek patterns in …
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Diagnosis and analysis of arteriosclerosis in the lower limbs from the arterial pressure pulse.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1972. Ph.D.
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Exercise, arterial pressure control & systemic O2 tension : implications for post exercise hypotension in hypertension
… condition. 9 pre-hypertensive males, mean arterial pressure (MAP) = 106 ± 5 mmHg (50 ± 10 yr), not on medication, were studied for 6 hours following 30-minutes of cycle exercise at 70% maximal oxygen consumption and following 30-minutes of seated rest. Results demonstrate that moderate …
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A non-invasive central arterial pressure waveform estimation system using ultrasonography for real-time monitoring
… details non-invasive evaluation of a central arterial blood pressure (ABP) waveform using a low-cost ultrasound scanning system. ABP bears significant clinical value in cardiovascular pathophysiology. Non-invasive evaluation of the full ABP waveform has been long desired by medical communities …
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Effect of pulmonary arterial pressure and precipitation on reproductive performance in Angus heifers in south central Wyoming
… of right sided heart failure. Pulmonary arterial pressure (PAP) scores are indicator traits of HAD, and can be used to diagnose cattle at risk for the disease, or animals in the early stages of pulmonary hypertension and (or) heart failure. There is concern that the physiological stress …
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Automatic Control Strategies of Mean Arterial Pressure and Cardiac Output. MIMO controllers, PID, internal model control, adaptive model reference, and neural nets are developed to regulate mean arterial pressure and cardiac output using the drugs sodium Nitroprusside and dopamine
High blood pressure, also called hypertension is one of the most common worldwide diseases afflicting humans and is a major risk factor for stroke, myocardial infarction, vascular disease, and chronic kidney disease. If blood pressure is controlled and oscillations in the hemodynamic variables are …
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The Effects of Hemoglobin-Based Oxygen Carriers On Mean Arterial Pressure, Arteriolar Diameter, and Nitric Oxide in the Microcirculation
… the mechanisms through which HBOCs affect mean arterial pressure (MAP), arteriolar diameter, and nitric oxide levels in the microcirculation were investigated, using Oxyglobin (HBOC-301), a third generation glutaraldehyde-polymerized bovine hemoglobin. The spinotrapezius muscle of female …
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Arterial Wall Hypertrophy and PDGF-A Expression in One-Kidney, One-Clip Hypertension and Angiotensin II Infusion Are Mediated By Elevated Arterial Pressure
… relative roles of angiotensin II (ANG II) and pressure in the structural alterations that occur in experimental hypertension. Two separate studies were performed in order to differentiate these two mechanisms. First, male Wistar rats were subjected to one-kidney, one-clip (1K1C) hypertension or …
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Awareness, Treatment and Control of Arterial Pressure in the Rural Population. Identifying Barriers to Effective Control // Осведоменост, лечение и контрол на артериалното налягане сред селското население. Бариери за контрол
The study of 'usual mean arterial pressure (AP)' revealed a disadvantage for the rural population regarding the extent of AP awareness, treatment and control. Seasonal variation in AP significantly impacts the frequency of elevated values and the degree of AP control. The degree of awareness and …
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Central autonomic control in spontaneously hypertensive rats: a study on phasic phenomena during rapid-eye-movement sleep
… spontaneous fluctuations in heart period and arterial pressure clearly shows differences between the two sleep states. In non rapid-eye-movement sleep, heart rhythm is under prevalent baroreflex control, whereas in rapid-eye-movement sleep central autonomic commands prevail (Zoccoli et al., …
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Spontaneous rhythmic contractions in the coarcted aorta of hypertensive rats
We examined the contractile behavior of isolated, arterial ring segments excised from Sprague-Dawley rats which had undergone a complete occlusion of the aorta between the origin of the renal arteries. Eight days post-occulsion, measurements in awake rats showed that arterial pressure in the …
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Sympathetic nervous system in the development of mild DOCA-salt hypertension
… decades of research. Long-term regulation of arterial pressure is generally linked to the ability of the kidneys to maintain volume homeostasis by altering the renal excretion of salt and water in response to changes in arterial pressure. But there is also compelling evidence for a role of the …
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ΑΥΤΟΜΑΤΟΣ ΔΙΑΤΗΡΗΣΙΣ ΤΗΣ ΑΡΤΗΡΙΑΚΗΣ ΠΙΕΣΕΩΣ ΔΙ' ΕΛΕΓΧΟΜΕΝΗΣ ΑΡΤΗΡΙΑΚΗΣ ΑΦΑΙΜΑΞΕΩΣ ΕΝΤΟΣ ΚΛΕΙΣΤΟΥ ΑΣΚΟΥ ΜΕΓΑΛΗΣ ΕΝΔΟΤΙΚΟΤΗΤΟΣ
IN THIS WORK THE CONTROL OF HIGH BLOOD PRESSURE IS ATTEMPTED AROUND A PRESENT (TARGET) VALVE BY CONNECTING THE ARTERIA SYSTEM WITH A COMPLEX HIGH COPLIANCE BALLOON. THIS BALLOON COMPRISED OF 12 SIMPLE ONES WAS USED IN 5 ANESTHETIZED DOGS FOR IN VIVO EXPERIMENTS. THE PEAK PRESSURE OF THIS BALLOON …
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The effects of prostaglandin inhibition on the sympathetic and pressor responses to muscular contraction and postcontraction muscle ischemia
… (PC). To accomplish this heart rate (HR), arterial pressure (n=10) and plasma norepinephrine (NE) levels (n=8) were measured in 10 healthy male subjects during HG at 40% of MVC to exhaustion and during PC. The subjects were given a double-blind administration of either placebo (PLAC) or a …
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Controlled Arterial Hypotension in Shoulder Surgery // Контролирана артериална хипотензия при раменна хирургия
… namely the targeted lowering of systemic arterial pressure, has become established as a technique in various surgical procedures to reduce intraoperative blood loss and improve the visibility of the operative field. To achieve controlled hypotension, various methods and techniques – …
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Alterations in the Brain Renin-Angiotensin System in a Model of Fetal Programming
… fetal steroid exposure may lead to elevated mean arterial pressure and decreased autonomic function in young adults. Baroreflex sensitivity for control of heart rate is an important marker of autonomic function and is reduced in conditions associated with hypertension. Indeed, sheep exposed in …
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