(Stroke. 1999;30:1056-1064.)
© 1999 American Heart Association, Inc.
Original Contributions |
Changes in Arterial Structure and Function Under Trandolapril-Verapamil Combination in Hypertension
From the Department of Internal Medicine, Broussais Hospital (A.B., A.M.B., M.E.S.), and Institut de Recherche et Formation Cardiovasculaire (J.J., R.A., F.S., A.R.), Paris, France.
Correspondence to Professeur Michel SAFAR, Médecine Interne 1, Hôpital Broussais, 96 Rue Didot, 75674 Paris Cedex 14, France.
Background and Purpose—Converting enzyme inhibition and calcium blockade alter large arteries in hypertension. However, the heterogeneity of the response according to the site of cardiovascular measurements has never been investigated.
Methods—In a double-blind study, we compared for 180 days 3 hypertensive patient groups treated with verapamil, trandolapril, or their combination. Using echo-Doppler technique and applanation tonometry, we independently measured mean pressure, local pulse pressure, arterial diameter, and distensibility at 3 arterial sites (brachial and common carotid arteries and abdominal aorta), as well as cardiac and carotid wall structure.
Results—Mean and pulse pressure decreased significantly to a greater extent with the drug combination. Regarding arterial and cardiac hemodynamics, significant and similar changes were noted in the 3 groups: decreases in abdominal aorta and carotid but not brachial diameter; increases in carotid artery, abdominal aorta, and brachial distensibility even after adjustment to mean blood pressure reduction; and more substantial regression of cardiac mass than carotid wall thickness.
Conclusions—This study shows that both compounds and more significantly combination therapy decreased mean and pulse pressures measured independently and that the changes in diameter, thickness, and stiffness were influenced primarily by the site of cardiovascular measurements, resulting in a predominant increase in distensibility of muscular arteries, little change in carotid wall thickness, but a significant regression of cardiac hypertrophy.
Key Words: antihypertensive therapy • arterial wall • hypertension
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