scholarly journals STUDIES IN EDEMA

1909 ◽  
Vol 11 (5) ◽  
pp. 627-640
Author(s):  
Moyer S. Fleisher ◽  
Leo Loeb

1. As a result of the intravenous infusion of a solution of sodium chloride a characteristic curve indicating the fluid retained in the vascular system is obtained. In the first period of the infusion the maximum of retention of fluid is noted. Then more fluid is removed from the blood vessels, so that for a short time a fall in the curve of dilution takes place, after which the dilution again slowly increases. 2. This curve is not materially changed by the addition of calcium chloride or of adrenalin to the infused solution, and under such conditions adrenalin does not lead to an increased pressing out of fluid from the vascular system, although is causes a constant and decided rise in blood pressure. Myocarditic lesions lead to an increased intravascular retention of fluid. Nephrectomy does not lead to an increased intravascular retention of fluid, but probably causes a diminution of the amount of fluid retained in the blood vessels.

1909 ◽  
Vol 11 (5) ◽  
pp. 641-655 ◽  
Author(s):  
Moyer S. Fleisher ◽  
Leo Loeb

1. Direct measurements of the blood pressure carried out during the intravenous infusion of various solutions into rabbits show that although a relation between the height of blood pressure and secretion of urine may be noted, a direct relation docs not exist between blood pressure and peritoneal transudate and intestinal fluid. 2. Calcium chloride docs not increase the peritoneal transudate by a rise of blood pressure, nor does it decrease the intestinal fluid by a fall of blood pressure, since no such increase of peritoneal fluid nor decrease of intestinal fluid is noticeable in animals with myocarditic lesions which are infused with solutions of sodium chloride. 3. It can be proved that calcium chloride does not diminish the amount of urine as a result of its depressing action on the blood pressure. Our experiments make it probable that calcium chloride decreases the diuresis by a direct action on the renal epithelium.


Entropy ◽  
2019 ◽  
Vol 21 (8) ◽  
pp. 733 ◽  
Author(s):  
Schulz ◽  
Haueisen ◽  
Bär ◽  
Voss

The multivariate analysis of coupling pathways within physiological (sub)systems focusing on identifying healthy and diseased conditions. In this study, we investigated a part of the central-autonomic-network (CAN) in 17 patients suffering from schizophrenia (SZO) compared to 17 age–gender matched healthy controls (CON) applying linear and nonlinear causal coupling approaches (normalized short time partial directed coherence, multivariate transfer entropy). Therefore, from all subjects continuous heart rate (successive beat-to-beat intervals, BBI), synchronized maximum successive systolic blood pressure amplitudes (SYS), synchronized calibrated respiratory inductive plethysmography signal (respiratory frequency, RESP), and the power PEEG of frontal EEG activity were investigated for 15 min under resting conditions. The CAN revealed a bidirectional coupling structure, with central driving towards blood pressure (SYS), and respiratory driving towards PEEG. The central-cardiac, central-vascular, and central-respiratory couplings are more dominated by linear regulatory mechanisms than nonlinear ones. The CAN showed significantly weaker nonlinear central-cardiovascular and central-cardiorespiratory coupling pathways, and significantly stronger linear central influence on the vascular system, and on the other hand significantly stronger linear respiratory and cardiac influences on central activity in SZO compared to CON, and thus, providing better understanding of the interrelationship of central and autonomic regulatory mechanisms in schizophrenia might be useful as a biomarker of this disease.


1933 ◽  
Vol 27 (1) ◽  
pp. 87-94
Author(s):  
A. Clifford Morson

The diseases of the vascular system which cause hæmorrhage from the genito-urinary tract are:— (1) Those in which changes are noted in the blood and capillary endothelium, and (2) Those in which alterations of a pathological nature are taking place in the walls of both large and small blood-vessels, but in which there is no change in the blood itself. In the first group are the purpuras; in the second arteriosclerosis, hyperpiesis and atheroma. This paper is confined to a discussion of the latter group of diseases in relation to genito-urinary hæmorrhage. Little attention has been paid to sudden loss of blood from the kidney, bladder, or genitalia in support of a diagnosis of a vascular lesion, other than angioma. Hæmorrhage in these cases may be purely renal, vesical, or penile. Investigations consist of examination of the superficial arteries, estimation of the blood-pressure, examination of the blood and cystoscopy. Surgical lesions must be excluded by the usual well-known methods. A careful record has been kept of fifteen cases of arteriosclerosis in which hæmorrhage from the genito-urinary tract has been the predominant manifestation of the disease. Details are given of nine patients with renal, one with vesical and three with urethral hæmorrhage. Two cases of thrombosis of the penis are also included. From a study of the literature here the cases of urethral hæmorrhage and thrombosis of the penis, recorded as due to arterial disease, appear to be unique.


2012 ◽  
Vol 93 (2) ◽  
pp. 380-382
Author(s):  
A I Soyko ◽  
R N Karataev ◽  
I V Klyushkin ◽  
V A Gogin

The hydraulic model of the human circulatory system was discussed, presented from the position of classification and systematization of the major blood vessels, identified were the main consumers of the circulatory system, considered in detail was the area of regulation associated with the processes of blood pressure and heart rate measurement.


2018 ◽  
Vol 28 (3) ◽  
pp. 68
Author(s):  
Mohanad A. Kassim

The effects of stress in newborns were more severe than adults, The changes in the blood vessels and the heart of age-related and the result of stress are reflected on adaptation and resistance to the development of cardiovascular disease, such as hypertension. Therefore, experiments were conducted to study the changes developments on the heart and blood vessels under the influence of stress at the stages of maturity, used a laboratory rat model. The impact of each of the chronotropic and the stress on the blood vessels at the newborn rats were higher than adult animals, myocardial indolence and high blood pressure were observed at the old rats compared to adult animals as a result of the stress-responses.


Author(s):  
V Nahirniak ◽  
N Kusniak ◽  
I Kashperuk-Karpiuk ◽  
L Andrushchak ◽  
T Protsak ◽  
...  

Background: Previous studies demonstrated a health improving effect in patients underwent an automatic vibratory massage taking 10 minutes. One of reasons that may explain a healing effect of the automatic massage is a stimulated increase in both blood circulation through vascular system and effective size of blood vessels.Objective: This paper aims to quantify a contribution of the automatic mechanical massage of low extremities into the observed reduction in arterial blood pressure and explain this effect.Material and Methods: In this study, the low extremities of male and female patients were exposed to low frequency (12 Hz) mechanical vibrations for 10 minutes and the change in systolic and diastolic arterial blood pressures before and after this procedure was measured.Results: The experiments showed there is a reduction in systolic and diastolic arterial blood pressures after vibrational massage. There were corresponding 3.5±1.8 mmHg and 3.1±1.6 mm Hg arterial blood pressure reductions among men and 5.5±3.2 mm Hg and 2.2±1.2 mm Hg reductions among women.Conclusion: We explained this effect by increasing effective radius of blood vessels. Based on the Hagen-Poiseuille equation, we made estimates for the relative change in the effective radius of blood vessels. They gave the 0.7% and 1.3% increases in the effective radius of blood vessels in low extremities in men during systole and diastole, respectively, and the corresponding 1.1% and 0.6% increases in the effective radius of blood vessels of low extremities in women during the same periods.


EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Linda B. Bobroff

High blood pressure, or hypertension, can cause serious health problems. It makes your heart work harder and can damage your blood vessels even if you feel okay. Everyone should have their blood pressure checked regularly. If you have certain risk factors, you are more likely to have high blood pressure. This 6-page fact sheet is a major revision that discusses risk factors and ways to reduce risk.


2018 ◽  
Vol 6 (9) ◽  
Author(s):  
DR.MATHEW GEORGE ◽  
DR.LINCY JOSEPH ◽  
MRS.DEEPTHI MATHEW ◽  
ALISHA MARIA SHAJI ◽  
BIJI JOSEPH ◽  
...  

Blood pressure is the force of blood pushing against blood vessel walls as the heart pumps out blood, and high blood pressure, also called hypertension, is an increase in the amount of force that blood places on blood vessels as it moves through the body. Factors that can increase this force include higher blood volume due to extra fluid in the blood and blood vessels that are narrow, stiff, or clogged(1). High blood pressure can damage blood vessels in the kidneys, reducing their ability to work properly. When the force of blood flow is high, blood vessels stretch so blood flows more easily. Eventually, this stretching scars and weakens blood vessels throughout the body, including those in the kidneys.


2019 ◽  
Vol 23 (6) ◽  
pp. 92-99
Author(s):  
I. G. Kayukov ◽  
O. N. Beresneva ◽  
M. M. Parastaeva ◽  
G. T. Ivanova ◽  
A. N. Kulikov ◽  
...  

BACKGROUND. Increased salt intake is associated with a number of cardiovascular events, including increased blood pressure (BP) and the development of left ventricular hypertrophy (LVH). However, there is much evidence that a high content of sodium chloride in the diet does not always lead to an increase in BP, but almost inevitably causes cardiac remodeling, in particular, LVH. Many aspects of myocardial remodeling induced by high sodium content in the food have not been studied enough. THE AIM of the study was to trace the echocardiographic changes in Wistar rats fed the high salt ration and the high salt ration supplemented with soy proteins.MATERIAL AND METHODS. Echocardiography and BP measurements were performed on male Wistar rats, divided into three groups. The first (control; n = 8) included rats that received standard laboratory feed (20.16 % animal protein and 0.34 % NaCl); the second (n = 10) – animals that received standard feed and 8 % NaCl (high salt ration). The third group (n = 10) consisted of rats who consumed a low-protein diet containing 10 % soy protein isolate (SUPRO 760) and 8 % NaCl. The follow-up period was 2 and 4 months.THE RESULTS of the study showed that: (1) the intake of a large amount of salt with a diet does not necessarily lead to the formation of arterial hypertension; (2) despite the absence of a distinct increase in BP, under these conditions signs of cardiac remodeling, in particular, LVH, appear rather quickly; (3) supplementing a high-salt diet with soy isolates counteracts the development of LVH.CONCLUSION. High salt intake with food can cause heart remodeling, regardless of blood pressure, while soy proteins can counteract this process.


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