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Pulmonary function in hypertensive patients treated with pindolol: a report of two studies.

Abstract：

:Pulmonary function was measured serially in two separate randomized trials of pindolol in the treatment of essential hypertension. Patients with overt obstructive airways disease were excluded. In study 1, 131 hypertensive patients were randomized to placebo (31) and 15 mg (33), 30 mg (33), and 60 mg (34) of pindolol. Pulmonary function was measured before and at weeks 8 and 15 of active medication. Bronchospasm--a 20% increase in forced expiratory volume in 1 second (FEV1) after isoprenaline--developed in three patients on active treatment and one on placebo. In eight patients on pindolol and one on placebo, bronchospasm ceased. Compared to placebo, no deterioration in pulmonary function occurred with pindolol and in three tests--maximum voluntary ventilation (MVV) (L/min), MVV%, midexpiratory flow rate (MEFR) (L/min)--significant improvement occurred. In study 2, 14 hypertensive patients were randomized to pindolol (mean dose 50 mg/day), 15 to propranolol (mean 360 mg/day), and 14 to chlorthalidone (mean 107 mg/day). Pulmonary function was measured after 3 weeks of placebo and again after 6 weeks of active treatment. While propranolol produced slight deterioration in pulmonary function, pindolol and chlorthalidone produced slight but significant improvement (p less than 0.05) with maximum MEFR (L/sec). Pulmonary function tests measured after isoprenaline were significantly worse in patients on propranolol compared to those on placebo, but were unchanged in patients on pindolol or chlorthalidone. The conclusions are: (1) Pindolol in antihypertensive doses does not produce airways obstruction and some improvement in pulmonary function may occur. (2) In comparable doses, pindolol has a positive effect on pulmonary function and propranolol a negative effect which, when summated, is statistically significant. (3) Propranolol, but not pindolol, appears to block the bronchodilator effects of isoprenaline. The lack of pulmonary function impairment may be due to intrinsic sympathomimetic activity properties of pindolol.

journal_name

Am Heart J

journal_title

American heart journal

authors

Hamilton BP,Hamilton J,Kirkendall WM

doi

10.1016/0002-8703(82)90135-1

subject

Has Abstract

pub_date

1982-08-01 00:00:00

pages

432-7

issue

2 Pt 2

eissn

0002-8703

issn

1097-6744

pii

0002-8703(82)90135-1

journal_volume

104

pub_type

临床试验,杂志文章,随机对照试验

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