Cited by 301Hormonal Regulation and HypertensionRenin-Angiotensin System StudiesBlood Pressure and Hypertension Studies

Characterization of Resistant Hypertension<subtitle>Association Between Resistant Hypertension, Aldosterone, and Persistent Intravascular Volume Expansion</subtitle>

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Gaddam, Krishna K.·2008·Archives of Internal Medicine

Abstract

BACKGROUND: Resistant hypertension is a common clinical problem and greatly increases the risk of target organ damage. METHODS: We evaluated the characteristics of 279 consecutive patients with resistant hypertension (uncontrolled despite the use of 3 antihypertensive agents) and 53 control subjects (with normotension or hypertension controlled by using <or=2 antihypertensive medications). Participants were prospectively examined for plasma aldosterone concentration, plasma renin activity, aldosterone to renin ratio, brain-type natriuretic peptide, atrial natriuretic peptide, and 24-hour urinary aldosterone (UAldo), cortisol, sodium, and potassium values while adhering to a routine diet. RESULTS: Plasma aldosterone (P < .001), aldosterone to renin ratio (P < .001), 24-hour UAldo (P = .02), brain-type natriuretic peptide (P = .007), and atrial natriuretic peptide (P = .001) values were higher and plasma renin activity (P = .02) and serum potassium (P < .001) values were lower in patients with resistant hypertension vs controls. Of patients with resistant hypertension, men had significantly higher plasma aldosterone (P = .003), aldosterone to renin ratio (P = .02), 24-hour UAldo (P < .001), and urinary cortisol (P < .001) values than women. In univariate linear regression analysis, body mass index (P = .01), serum potassium (P < .001), urinary cortisol (P < .001), urinary sodium (P = .02), and urinary potassium (P < .001) values were correlated with 24-hour UAldo levels. Serum potassium (P = .001), urinary potassium (P < .001), and urinary sodium (P = .03) levels were predictors of 24-hour UAldo levels in multivariate modeling. CONCLUSIONS: Aldosterone levels are higher and there is evidence of intravascular volume expansion (higher brain-type and atrial natriuretic peptide levels) in patients with resistant hypertension vs controls. These differences are most pronounced in men. A significant correlation between 24-hour urinary aldosterone levels and cortisol excretion suggests that a common stimulus, such as corticotropin, may underlie the aldosterone excess in patients with resistant hypertension.

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  • Among 279 patients with resistant hypertension, brain natriuretic peptide was higher and plasma renin activity was lower than in control patients, supporting a component of relative volume excess, although 24-hour urinary sodium levels were not increased.

    “Among 279 patients with RH, brain natriuretic peptide was higher and PRA was lower than in control patients, supporting a component of relative volume excess (although 24-hour urinary sodium levels were not increased).159”
  • Among patients with resistant hypertension (n = 279, 52% women) and normotensive controls (n = 53, 45% women), women exhibited significantly lower plasma and urinary aldosterone levels than men.

    “among patients with resistant hypertension (n = 279, 52% women) and normotensive controls (n = 53, 45% women), women exhibited significantly lower plasma and urinary aldosterone levels than men [ 122 ].”

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  1. [19]Gomez-Sanchez CE. Adrenal steroid synthesis and regulation. In: Izzo JL, Black HR, editors. Hypertension primer. Liipincott Williams & Wilkins; Philadelphia: 2003. [Google Scholar]

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Authors
Gaddam, K. K.
Affiliations
University of Alabama at Birmingham (US)
Corresponding author
Gaddam, Krishna K.
Venue
Archives of Internal Medicine
Published
2008-06-09
Volume
168
Issue
11
Pages
1159
ISSN
0003-9926 (ISSN-L)
OpenAlex
W2118344567
Cited by
301
References
32
Citations by year
2026: 16 · 2025: 10 · 2024: 9 · 2023: 18 · 2022: 12 · 2021: 10 · 2020: 13 · 2019: 13 · 2018: 19 · 2017: 21 · 2016: 20 · 2015: 19 · 2014: 21 · 2013: 24 · 2012: 22
FWCI
13.02
Type
journal article
Language
en
Open access
Locations
  • Archives of Internal Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Heart, Lung, and Blood Institute (HL-007457, HL077100, HL-075614, R01HL075614, P50HL077100, T32HL007457)
  • National Center for Research Resources (M01RR00032, M01RR000032)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
Keywords
resistant hypertension, plasma aldosterone, aldosterone-renin ratio, plasma renin activity, brain natriuretic peptide, atrial natriuretic peptide, intravascular volume expansion, urinary cortisol, serum potassium, urinary sodium, sex differences, body mass index, target organ damage, aldosterone excess
MeSH terms
Aldosterone, Antihypertensive Agents, Drug Resistance, Female, Humans, Hydrocortisone, Hypertension, Male, Middle Aged, Atrial Natriuretic Factor, Potassium, Regression Analysis, Renin, Sex Factors, Sodium, Case-Control Studies, Natriuretic Peptide, Brain

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