title: Effect of sustained-release Verapamil on the morning systemic arterial pressure surge during daily activity in patients with systemic hypertension.
abstract: In a placebo-controlled study of 13 subjects with systemic hypertension, sustained-release verapamil reduced the morning surge in systolic pressure by 10.2 mm Hg (p = 0.04), diastolic pressure by 11.1 mm Hg (p = 0.008), and heart rate by 3.3 beats/min (p = 0.17). Blunting of the morning hemodynamic surge may be a mechanism by which verapamil could reduce the risk of plaque disruption and acute coronary events in the morning.
authors.affiliation: Institute for Prevention of Cardiovascular Disease, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA.
authors.forename: G A
authors.initials: GA
authors.lastname: Rosito
authors.forename: O C
authors.initials: OC
authors.lastname: Gebara
authors.forename: C A
authors.initials: CA
authors.lastname: McKenna
authors.forename: H S
authors.initials: HS
authors.lastname: Solomon
authors.forename: J E
authors.initials: JE
authors.lastname: Muller
authors.forename: G H
authors.initials: GH
authors.lastname: Tofler
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001794:Blood Pressure / Q000187:drug effects* / Q000502:physiology; D002940:Circadian Rhythm / Q000187:drug effects*; D003692:Delayed-Action Preparations; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D005260:Female; D005583:Fourier Analysis; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D006973:Hypertension / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic; D014700:Verapamil / Q000008:administration & dosage*
chemical_list: D003692:Delayed-Action Preparations; D014700:Verapamil