[Hypertension in the elderly. Comparison of the efficacy and tolerability of labetalol and nifedipine. A multicenter, randomized, single-blind study].
This randomized multicentre study in elderly hypertensives with two unbalanced groups (2 patients under labetalol for 1 patient under nifedipine) compared the efficacy and safety of labetalol, whose dosage could be adjusted (1, 2, then 3 tablets/day) according to blood pressure level (BP greater than or equal to 160/95 mmHg), to that of nifedipine given at its recommended dosage (2 tablets/day). The treatment period lasted 6 weeks (D42). The main judgment criteria was the rate of patients with normalized BP under treatment (SBP less than 160 and DBP less than 95 mmHg). The analysis was carried out on 170 patients, 112 labetalol and 58 nifedipine. Both groups were homogeneous when entering into the study. The only difference was a higher rate of smokers in the nifedipine group compared with labetalol's (29% vs 13%). The rate of patients with normalized BP (SBP less than 160 and DBP less than 95 mmHg) were 66% in the labetalol group and 48% in the nifedipine's (p less than 0.05). Treatment withdrawals for all causes during the study were more frequent in the nifedipine group (19%) than in the labetalol's (6%). Treatment withdrawals for adverse events occurred in 3.5% of patients in the labetalol group and in 12% of the nifedipine's. The overall adverse events rate was 9% with labetalol and 29% with nifedipine (p less than 0.001). In this comparative study in elderly hypertensives, labetalol given in a dose titration schedule proved significantly superior to nifedipine, given at recommended maximal dosage, in terms of both BP control and side effects profile.(ABSTRACT TRUNCATED AT 250 WORDS)
Service de Médecine interne et Gériatrie, Hôpital P. Swynghedauw, Lille.
M
M
Decoulx
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P
Godon
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M
Pappo
H
H
d'Allens
D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D007741:Labetalol / Q000627:therapeutic use*; D015337:Multicenter Studies as Topic; D009543:Nifedipine / Q000627:therapeutic use*; D016032:Randomized Controlled Trials as Topic; D016037:Single-Blind Method
D009543:Nifedipine; D007741:Labetalol
HTA du sujet âgé. Comparaison de l'efficacité et de la tolérance du labétalol et de la nifédipine. Etude multicentrique, randomisée, en simple insu.