Cited by 228Cardiovascular Function and Risk FactorsObstructive Sleep Apnea ResearchCardiovascular Disease and Adiposity

Left Ventricular Hypertrophy in Severe Obesity: Interactions Among Blood Pressure, Nocturnal Hypoxemia, and Body Mass

Avelar, Erick, Cloward, Tom V., Walker, James M., Farney, Robert J., Strong, Michael, Pendleton, Robert C., Segerson, Nathan, Adams, Ted D. +3 more·2007·Hypertension

Abstract

Obese subjects have a high prevalence of left ventricular (LV) hypertrophy. It is unclear to what extent LV hypertrophy results directly from obesity or from associated conditions, such as hypertension, impaired glucose homeostasis, or obstructive sleep apnea. We tested the hypothesis that LV hypertrophy in severe obesity is associated with additive effects from each of the major comorbidities. Echocardiography and laboratory testing were performed in 455 severely obese subjects with body mass index 35 to 92 kg/m 2 and 59 nonobese reference subjects. LV hypertrophy, defined by allometrically corrected (LV mass/height 2.7 ), gender-specific criteria, was present in 78% of the obese subjects. Multivariable regression analyses showed that average nocturnal oxygen saturation <85% was the strongest independent predictor of LV hypertrophy ( P <0.001), followed by systolic blood pressure ( P <0.015) and then body mass index ( P <0.05). With regard to LV mass, there were synergistic effects between hypertension and body mass index ( P interaction <0.001) and between hypertension and reduced nocturnal oxygen saturation. Severely obese subjects had normal LV endocardial fractional shortening (35±6% versus 35±6%) but mildly decreased midwall fractional shortening (15±2% versus 17±2%; P <0.001), indicating subtle myocardial dysfunction. In conclusion, more severe nocturnal hypoxemia, increasing systolic blood pressure, and body mass index are all independently associated with increased LV mass. The effects of increased blood pressure seem to amplify those of sleep apnea and more severe obesity.

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Crossref · 10.1161/01.hyp.0000251711.92482.14

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45 of 45 references verified0 citation errors · 0 not checkable

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  • Both LV cavity size and wall thickness are increased in obese subjects compared with age-matched controls.

    “In addition, the results indicate that both LV cavity size and wall thickness are increased in obese subjects compared with age-matched controls (22, 134, 151, 156, 242, 279, 377).”

    From Cardiac remodeling in obesity (2008) · cites this paper as [22]

  • Many published studies have concluded that obesity is independently associated with LV hypertrophy.

    “Many published studies have concluded that obesity is independently associated with LV hypertrophy (22, 28, 63, 72, 116, 235, 242, 266, 279, 284, 377).”

    From Cardiac remodeling in obesity (2008) · cites this paper as [22]

  • More recent data confirm the increased prevalence of LV hypertrophy in obese subjects.

    “The more recent data confirm the increased prevalence of LV hypertrophy in obese subjects.”

    From Cardiac remodeling in obesity (2008) · cites this paper as [22]

  • Many studies have shown increased LA dimensions in obese subjects compared with normal-weight control subjects.

    “Many studies have shown increased LA dimensions in obese subjects compared with normal-weight control subjects (16, 17, 22, 140, 274, 371, 375).”

    From Cardiac remodeling in obesity (2008) · cites this paper as [22]

  • Findings on LV ejection fraction in obese subjects are variable, with studies reporting depressed, normal, or supernormal EF.

    “Various authors have reported depressed LV ejection fraction (EF) (15, 68, 100), normal EF (22, 111, 116, 191, 242, 266, 279, 377), and supernormal EF (28, 155, 274, 375) in obese subjects.”

    From Cardiac remodeling in obesity (2008) · cites this paper as [22]

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Authors
Avelar, E., Cloward, T. V., Walker, J. M., Farney, R. J., Strong, M., Pendleton, R. C., Segerson, N., Adams, T. D., Gress, R. E., Hunt, S. C., & Litwin, S. E.
Affiliations
Intermountain Healthcare (US)
Venue
Hypertension
Published
2007-01
Volume
49
Issue
1
Pages
34-39
ISSN
  • 0194-911X (ISSN-L)
  • 1524-4563
OpenAlex
W2154952676
Cited by
228
References
45
Citations by year
2026: 3 · 2025: 12 · 2024: 10 · 2023: 8 · 2022: 11 · 2021: 12 · 2020: 17 · 2019: 10 · 2018: 7 · 2017: 16 · 2016: 13 · 2015: 9 · 2014: 16 · 2013: 21 · 2012: 6
FWCI
7.38
Type
journal article
Language
en
Open access
closed
Locations
  • Hypertension (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Heart, Lung, and Blood Institute (T32-HL-7576, T32HL007576)
  • National Institute of Diabetes and Digestive and Kidney Diseases (5R01DK0550006-05, R01DK055006)
  • National Center for Research Resources (M01-RR 00064, M01RR000064)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
  • Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Disease and Adiposity
Keywords
left ventricular hypertrophy, morbid obesity, nocturnal hypoxemia, obstructive sleep apnea, body mass index, left ventricular mass, fractional shortening, cardiac dysfunction, comorbidities
MeSH terms
Adult, Hypoxia, Blood Pressure, Body Weight, Circadian Rhythm, Echocardiography, Female, Heart, Humans, Male, Middle Aged, Obesity, Morbid, Prognosis, Sleep Apnea Syndromes, Systole, Hypertrophy, Left Ventricular

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