Response of the left ventricle in coronary artery disease to postextrasystolic potentiation.

摘要: Left ventricular volumes and contractile patterns were evaluated during the first sinus beat after a compensatory pause resulting from arrhythmia compared to second (control beat) in order evaluate effect of postextrasystolic potentiation. Twelve patients had no evidence heart disease (group I). Fifty coronary artery included 14 IIa) with prior myocardial infarction normal left pattern 19 pateints IIb) an abnormal pattern. Seventeen IIc) documented transmural as well In all beat, when demonstrated increases stroke volume ejection fraction decrease end-systolic volume. There qualitative changes immediate function. both group IIb IIc volume, significantly greater than observed groups I IIa. Abnormal wall segments present control potentiation pattern, improved or change beat. more likely revert result IIc. Akinesia was less completely hyposinesia. 20 24 aortocoronary bypass surgery corresponded those