ST-segment computerized monitoring before and after angioplasty: clinical correlation with recurrent angina during the short-term follow-up.

Abstract:

:The purpose of this study was to determine whether computerized ST-segment monitoring previous to percutaneous transluminal coronary angioplasty (PTCA) and after performance of this procedure may be useful to discern a pattern of recurrent angina. For this purpose, we analyzed 57 patients (11 women and 46 men, mean age 60 years) before and after treatment with balloon procedure. These patients were followed up during the next 3 months. A computerized electrocardiographic (ECG) device was used which was capable of recording simultaneously all 12 leads at rest. It was programmed to store a complete ECG every 5 min and was capable of detecting any abnormal ST alteration > than 0.5 mV at 80 ms after J junction, including R-wave amplitude. Measurements were started before (mean time 7.26 h) and after (mean time 7.96 h) the procedure. The value for ST amplitude at the J junction was used as the 0 point; then the most negative depression or the most positive elevation value was considered as the most abnormal ST alteration during monitoring. The patients were followed up for 3 months for the purpose of recognizing recurrent angina or establishing the occurrence of death. Twelve patients (30%) had recurrent angina. Discriminant function analysis revealed that ST monitoring in these patients showed significant difference after PTCA in comparison with controls, both in the frontal plane [ST depression 170 +/- 52 mV vs. 231 +/- 23 (p = 0.02)] and in precordial leads [176 +/- 16 vs. 80 +/- 6.19 mV (p = 0.0001)].(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

Clin Cardiol

journal_title

Clinical cardiology

authors

Gurfinkel E,Duronto E,Manos E,García N,Mejaíl R,Mendiz O,Cerdá M,Mautner B

doi

10.1002/clc.4960170806

subject

Has Abstract

pub_date

1994-08-01 00:00:00

pages

433-6

issue

8

eissn

0160-9289

issn

1932-8737

journal_volume

17

pub_type

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