Pulse pressure, left ventricular function and cardiovascular events during antihypertensive treatment (the LIFE study).
BACKGROUND
Pulse pressure (PP) has been related to risk of cardiovascular events in hypertension. However, less is known about modification of this risk marker during antihypertensive treatment in patients with left ventricular (LV) hypertrophy.


METHODS
Associations of in-treatment PP with LV systolic function and cardiovascular events was assessed in 883 patients with electrocardiographic LV hypertrophy during 4.8 years of randomized losartan- or atenolol-based treatment within the echocardiographic substudy of the Losartan Intervention For Endpoint reduction in hypertension (LIFE) study.


RESULTS
PP was similarly reduced by both treatments. In different multiple regression models, lower in-treatment PP was independently associated with lower in-treatment LV ejection fraction (beta=0.16), stress-corrected midwall shortening (beta=0.20), stroke volume (beta=0.11) and cardiac index (beta=0.07, all p<0.05). In time-varying Cox regression models, 10 mmHg lower in-treatment PP was associated with a 28% higher rate of cardiovascular events [hazard ratio, HR = 1.28 (1.09 - 1.52), p<0.01] independent of in-treatment LV mass and ejection fraction, history of ischemic heart disease, Framingham risk score and study treatment allocation.


CONCLUSIONS
During systematic antihypertensive treatment in hypertensive patients with electrocardiographic LV hypertrophy, lower in-treatment PP was associated with lower in-treatment LV function and cardiac output as well as higher rate of cardiovascular events.
Gerdts
Eva
E
Institute of Medicine, University of Bergen, Norway. gerdtsev@online.no
Franklin
Stanley
S
Rieck
Ashild
A
Papademetriou
Vasilios
V
Wachtell
Kristian
K
Nieminen
Markku
M
Dahlöf
Björn
B
Devereux
Richard Blyton
RB
D000368:Aged; D000959:Antihypertensive Agents / Q000008:administration & dosage*; D001262:Atenolol / Q000008:administration & dosage*; D001794:Blood Pressure; D004452:Echocardiography; D005260:Female; D006801:Humans; D006973:Hypertension / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000503:physiopathology*; D017379:Hypertrophy, Left Ventricular / Q000000981:diagnostic imaging / Q000503:physiopathology; D019808:Losartan / Q000008:administration & dosage*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012307:Risk Factors; D013318:Stroke Volume / Q000187:drug effects / Q000502:physiology; D016277:Ventricular Function, Left / Q000187:drug effects / Q000502:physiology
D000959:Antihypertensive Agents; D001262:Atenolol; D019808:Losartan