Document Detail


Exercise performance during losartan- or atenolol-based treatment in hypertensive patients with electrocardiographic left ventricular hypertrophy (a LIFE substudy).
MedLine Citation:
PMID:  17060116     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The objective of the study was to assess the influence of left ventricular (LV) hypertrophy regression on exercise capacity in hypertensive patients. Doppler echocardiography was performed at rest and during exercise in 51 patients with electrocardiographic LV hypertrophy before and after 1 year of randomized blinded losartan- or atenolol-based antihypertensive treatment. After 1 year, blood pressure was comparably reduced by 32/14 and 27/13 mmHg, respectively, in the losartan and atenolol groups, but the atenolol group had higher mean LV mass index (118 vs 103 g/m2) and lower LV ejection fraction (61% vs 67%) and midwall shortening (15.8% vs 16.8%) (all p<0.05). Resting diastolic Doppler indices remained unchanged and did not differ between the groups. Peak oxygen uptake during exercise was virtually unchanged after 1 year and did not differ between the groups in spite of a lower peak exercise heart rate in atenolol-treated patients. In multivariate analysis, higher peak oxygen uptake at 1 year was associated with lower body mass index, and higher systolic blood pressure and shorter isovolumic relaxation time at peak exercise (multiple R2 = 0.51, p<0.01), while age, gender, heart rate increase during exercise, reduction in LV mass and study treatment did not enter. In conclusion, reduction in blood pressure and LV mass induced by losartan or atenolol treatment was not accompanied by improved exercise capacity after 1 year. The results may be explained by persistent impairment of myocardial relaxation influencing exercise capacity.
Authors:
Eva Gerdts; Hans Björnstad; Richard B Devereux; Per Lund-Jhansen; Einar S Davidsen; Per Omvik
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Blood pressure     Volume:  15     ISSN:  0803-7051     ISO Abbreviation:  Blood Press.     Publication Date:  2006  
Date Detail:
Created Date:  2006-10-24     Completed Date:  2006-11-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9301454     Medline TA:  Blood Press     Country:  Norway    
Other Details:
Languages:  eng     Pagination:  220-6     Citation Subset:  IM    
Affiliation:
Institute of Medicine, University of Bergen, Bergen, Norway. gerdtsev@online.no
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MeSH Terms
Descriptor/Qualifier:
Adrenergic beta-Antagonists / therapeutic use*
Aged
Angiotensin II Type 1 Receptor Blockers / therapeutic use*
Atenolol / therapeutic use*
Blood Pressure / drug effects
Echocardiography, Doppler, Color
Electrocardiography
Exercise / physiology*
Female
Humans
Hypertrophy, Left Ventricular / drug therapy*,  physiopathology
Losartan / therapeutic use*
Male
Oxygen Consumption / drug effects*,  physiology
Physical Endurance / drug effects
Chemical
Reg. No./Substance:
0/Adrenergic beta-Antagonists; 0/Angiotensin II Type 1 Receptor Blockers; 114798-26-4/Losartan; 29122-68-7/Atenolol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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