title: Frequency and duration of silent myocardial ischemia in patients with unstable angina before and after intensive medical therapy.
abstract: Frequency and duration of silent myocardial ischemia (SMI) on Holter recording were determined in 20 patients with unstable angina before and after 4 weeks of intensive triple drug therapy with oral nitrates (20-80 mg daily), betablocker (metoprolol 100-200 mg/day) and calcium channel blocker (nifedipine 40-80 mg/day). The number of ischemic episodes decreased from 445 (409 silent) to 149 (140 silent) (p less than 0.001), and mean duration of silent and symptomatic ischemia per patient decreased from 5.9 +/- 3.3 minutes to 2.4 +/- 2.6 minutes (p less than 0.001) and 4.1 +/- 5.5 minutes to 1.4 +/- 2.8 minutes (p less than 0.001) respectively. Intensive medical therapy is effective in ameliorating SMI in patients with unstable angina.
authors.affiliation: Department of Cardiology, G.B. Pant Hospital, New Delhi.
authors.forename: U A
authors.initials: UA
authors.lastname: Kaul
authors.forename: M
authors.initials: M
authors.lastname: Bhargava
authors.forename: P P
authors.initials: PP
authors.lastname: Singh
authors.forename: A
authors.initials: A
authors.lastname: Bhat
authors.forename: P
authors.initials: P
authors.lastname: Jain
authors.forename: M
authors.initials: M
authors.lastname: Khalilullah
mesh_terms: D000328:Adult; D000789:Angina, Unstable / Q000188:drug therapy*; D003327:Coronary Disease / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control; D015716:Electrocardiography, Ambulatory; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008790:Metoprolol / Q000627:therapeutic use*; D008875:Middle Aged; D009543:Nifedipine / Q000627:therapeutic use*; D009566:Nitrates / Q000627:therapeutic use*
chemical_list: D009566:Nitrates; D008790:Metoprolol; D009543:Nifedipine