Cited by 210Blood Pressure and Hypertension StudiesCardiovascular Function and Risk FactorsRenin-Angiotensin System Studies

Obesity and Essential Hypertension: Hemodynamics, Intravascular Volume, Sodium Excretion, and Plasma Renin Activity

Messerli, Franz H.·1981·Archives of Internal Medicine

Abstract

Systemic hemodynamics, intravascular volume, and plasma renin activity were determined in 135 lean, mildly obese, or distinctly overweight subjects who were normotensive or had borderline or established essential hypertension. Cardiac output (but not index) was higher and peripheral resistance lower in obese than in lean subjects, except in borderline hypertension. intravascular volume was increased in obese patients, and more so when corrected for body height; correction for body weight led to relative volume contraction. Intravascular volume correlated directly with cardiac output in the entire population, as well as in the subgroups. Intravascular volume correlated inversely with total peripheral resistance in all subjects and in each subgroup. Both correlations remained significant when an approximation was used to correct influences of obesity on total blood volume. Sodium excretion was higher in obese than in lean subjects. Thus, despite the expanded intravascular volume in obesity, the pathophysiologic relationship between systemic hemodynamics and intravascular volumes remains unchanged. Relatively low peripheral resistance in obesity may decrease the risk of systemic vascular disease. Nevertheless, since circulating volume is increased, the greater venous return adds an additional load to a left ventricle that is already burdened by a high afterload caused by arterial hypertension. (Arch Intern Med141:81-85, 1981)

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Crossref · 10.1001/archinte.1981.00340010073016

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  • The metabolic, endocrine, cardiovascular, and renal changes caused by dietary-induced obesity in dogs and rabbits closely mimic the changes observed in obese humans.

    “The metabolic, endocrine, cardiovascular, and renal changes caused by dietary-induced obesity in these experimental animals closely mimic the changes observed in obese humans5,13–16 (Table 1).”

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Authors
Messerli, F. H.
Corresponding author
Messerli, Franz H.
Venue
Archives of Internal Medicine
Published
1981-01-01
Volume
141
Issue
1
Pages
81
ISSN
0003-9926 (ISSN-L)
OpenAlex
W4246843923
Cited by
210
References
0
Citations by year
2025: 1 · 2024: 2 · 2023: 1 · 2022: 8 · 2021: 4 · 2020: 3 · 2019: 7 · 2018: 4 · 2017: 3 · 2016: 8 · 2015: 5 · 2014: 7 · 2013: 7 · 2012: 10
FWCI
5.34
Type
journal article
Language
en
Open access
closed
Locations
Archives of Internal Medicine (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
Keywords
obesity, essential hypertension, systemic hemodynamics, intravascular volume, plasma renin activity, cardiac output, systemic vascular resistance, sodium excretion, blood volume, left ventricular afterload, venous return

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