Effect of K+ Depletion on Renal and Systemic Hemodynamics

2015 ◽  
pp. 167-173
Author(s):  
Richard L. Tannen
Keyword(s):  
Systemic Hemodynamics ◽  
K Depletion

Patterns of Cerebral Blood Flow and Systemic Hemodynamics During Arithmetic Processing

2008 ◽  
Vol 22 (2) ◽  
pp. 81-90 ◽  
Author(s):  
Natalie Werner ◽  
Neval Kapan ◽  
Gustavo A. Reyes del Paso
Keyword(s):  
Blood Pressure ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Time Course ◽  
Doppler Sonography ◽  
Transcranial Doppler Sonography ◽  
Systemic Hemodynamics ◽  
Heart Period ◽  
Blood Flow Velocities ◽  
Flow Velocities

The present study explored modulations in cerebral blood flow and systemic hemodynamics during the execution of a mental calculation task in 41 healthy subjects. Time course and lateralization of blood flow velocities in the medial cerebral arteries of both hemispheres were assessed using functional transcranial Doppler sonography. Indices of systemic hemodynamics were obtained using continuous blood pressure recordings. Doppler sonography revealed a biphasic left dominant rise in cerebral blood flow velocities during task execution. Systemic blood pressure increased, whereas heart period, heart period variability, and baroreflex sensitivity declined. Blood pressure and heart period proved predictive of the magnitude of the cerebral blood flow response, particularly of its initial component. Various physiological mechanisms may be assumed to be involved in cardiovascular adjustment to cognitive demands. While specific contributions of the sympathetic and parasympathetic systems may account for the observed pattern of systemic hemodynamics, flow metabolism coupling, fast neurogenic vasodilation, and cerebral autoregulation may be involved in mediating cerebral blood flow modulations. Furthermore, during conditions of high cardiovascular reactivity, systemic hemodynamic changes exert a marked influence on cerebral blood perfusion.

Relationship Between Systemic Hemodynamics and Ambulatory Blood Pressure Level Are Sex Dependent

Hypertension ◽  
1995 ◽  
Vol 26 (6) ◽  
pp. 1195-1199 ◽  
Author(s):  
José Alfie ◽  
Gabriel D. Waisman ◽  
Carlos R. Galarza ◽  
Marissa I. Magi ◽  
Federico Vasvari ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Ambulatory Blood Pressure ◽  
Blood Pressure Level ◽  
Pressure Level ◽  
Systemic Hemodynamics

scholarly journals Plasma norepinephrine and age as determinants of systemic hemodynamics in men with established essential hypertension.

Hypertension ◽  
1987 ◽  
Vol 9 (4) ◽  
pp. 415-419 ◽  
Author(s):  
J L Izzo ◽  
R J Smith ◽  
P S Larrabee ◽  
M C Kallay
Keyword(s):  
Essential Hypertension ◽  
Systemic Hemodynamics ◽  
Plasma Norepinephrine

scholarly journals Circadian rhythms in systemic hemodynamics and renal function in healthy subjects and patients with nephrotic syndrome

2001 ◽  
Vol 59 (5) ◽  
pp. 1873-1880 ◽  
Author(s):  
Albertus J. Voogel ◽  
Marion G. Koopman ◽  
Augustinus A.M. Hart ◽  
Gert A. Van Montfrans ◽  
Lambertus Arisz
Keyword(s):  
Renal Function ◽  
Nephrotic Syndrome ◽  
Circadian Rhythms ◽  
Healthy Subjects ◽  
Systemic Hemodynamics

scholarly journals Systemic hemodynamics and renal function in hemorrhaged dogs resuscitated with cross-linked hemoglobin

2000 ◽  
Vol 278 (1) ◽  
pp. R28-R33 ◽  
Author(s):  
John M. Stulak ◽  
Luis A. Juncos ◽  
John A. Haas ◽  
J. Carlos Romero
Keyword(s):  
Nitric Oxide ◽  
Renal Function ◽  
Cardiac Output ◽  
Sodium Excretion ◽  
Systemic Hemodynamics ◽  
Urinary Flow ◽  
Excretory Function ◽  
Renal Function Recovery ◽  
Function Recovery ◽  
Hormonal Milieu

Cross-linked hemoglobin (XL-Hb) infused into dogs increases mean arterial pressure (MAP) but decreases blood flow to the renal (RBF), mesenteric (MBF), and iliac (IBF) circulations. These actions differ markedly from dextran infusion (which increases RBF, MBF, and IBF without altering MAP) and may be due to scavenging of nitric oxide by XL-Hb. However, because the hormonal milieu regulating regional circulation is altered during hemorrhage (when XL-Hb may be used), we studied whether systemic hemodynamics, RBF, MBF, IBF, and renal excretory function in hemorrhaged dogs was altered when resuscitated with XL-Hb compared with dextran ( n = 6 each). Hemorrhage decreased MAP by 25% due to a 75% decline in cardiac output. RBF, MBF, and IBF all fell by 33, 64, and 72%, respectively ( P < 0.05 each). There was also a fall in glomerular filtration rate (GFR), urinary flow, and sodium excretion ( P < 0.05 each). After resuscitation, MAP, cardiac output, RBF, MBF, IBF, and GFR all recovered to basal values with either XL-Hb or dextran. Urinary flow and sodium excretion increased to above basal levels with dextran (both by 3.5-fold; P < 0.05) or XL-Hb (by 7.5- and 10-fold, respectively; P < 0.05). We conclude that resuscitation with XL-Hb after hemorrhage not only increases MAP, but also restores RBF, MBF, IBF, GFR, and urinary sodium and volume excretion analogously to dextran. The results contrast with those in normal dogs and suggest that nitric oxide inhibition does not impair hemodynamic and renal function recovery during hemorrhage.

Comparison of the systemic hemodynamics in normotensive and hypertensive rats

1982 ◽  
Vol 93 (5) ◽  
pp. 584-586
Author(s):  
Sh. I. Ismailov ◽  
O. S. Medvedev
Keyword(s):  
Systemic Hemodynamics ◽  
Hypertensive Rats

Sequential effect of angiographic contrast agent on canine renal and systemic hemodynamics

1971 ◽  
Vol 81 (1) ◽  
pp. 80-92 ◽  
Author(s):  
George A. Porter ◽  
Frank E. Kloster ◽  
J.David Bristow
Keyword(s):  
Contrast Agent ◽  
Sequential Effect ◽  
Systemic Hemodynamics

Liver and systemic hemodynamics in children with cirrhosis: Impact on the surgical management in pediatric living donor liver transplantation

2017 ◽  
Vol 23 (11) ◽  
pp. 1440-1450 ◽  
Author(s):  
Catherine de Magnée ◽  
Francis Veyckemans ◽  
Thierry Pirotte ◽  
Renaud Menten ◽  
Dana Dumitriu ◽  
...  
Keyword(s):  
Liver Transplantation ◽  
Surgical Management ◽  
Living Donor ◽  
Living Donor Liver Transplantation ◽  
Systemic Hemodynamics ◽  
Donor Liver ◽  
Donor Liver Transplantation
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