title: Impact of angiotensin converting enzyme inhibition on the haemodynamic profile during laboratory stress tests.
abstract: To determine the haemodynamic profile of angiotensin converting enzyme (ACE) inhibitors during stress, the cardiovascular response to various stress tests was examined in patients with essential hypertension before and after three months of therapy with lisinopril. Eighteen white patients were enrolled in the trial, of whom 12 completed the protocol. ACE inhibition with lisinopril effectively reduced systolic and diastolic pressure in the office (P less than 0.001), at rest (P less than 0.002), during mental stress (P less than 0.003), cold pressor test (P less than 0.003), and reaction time task (P less than 0.05). During physical exercise only diastolic pressure was significantly reduced (P less than 0.02). The fall in peak systolic pressure during cold pressor test and reaction time task was more pronounced than the fall in casual systolic pressure (P less than 0.05). At rest, cardiac output was unchanged, but total peripheral resistance was reduced after medication with lisinopril (P less than 0.05). During the cold pressor test, the increase in total peripheral resistance was attenuated by ACE inhibition (P less than 0.04). The haemodynamic response profile was not altered during the other tests. It is concluded that in middle-aged men ACE inhibitors reduce blood pressure during a variety of stressful events without altering the haemodynamic profile and even attenuating vasoconstriction during stress. This response pattern to ACE inhibition with lisinopril may reduce the impact of recurring stress-induced increases of blood pressure and of exaggerated vasoconstrictive stimuli on the cardiovascular system.
authors.affiliation: Department of Medicine, University of Bonn, Germany.
authors.forename: R E
authors.initials: RE
authors.lastname: Schmieder
authors.forename: H
authors.initials: H
authors.lastname: Rüddel
authors.forename: H
authors.initials: H
authors.lastname: Schächinger
authors.forename: W
authors.initials: W
authors.lastname: Schulte
mesh_terms: D000806:Angiotensin-Converting Enzyme Inhibitors / Q000494:pharmacology*; D001794:Blood Pressure / Q000187:drug effects; D004151:Dipeptides / Q000494:pharmacology; D005080:Exercise Test; D005260:Female; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D017706:Lisinopril; D008297:Male; D008875:Middle Aged
chemical_list: D000806:Angiotensin-Converting Enzyme Inhibitors; D004151:Dipeptides; D017706:Lisinopril