Duration of Preoperative Electrocardiographic QRS Complex and the Incidence of Heart Arrest after Aorto Coronary Bypass Surgery

Sudden heart arrest (HA) in the early phase after aorto coronary bypass surgery represents a serious event necessitating resuscitation, and for those who survive usually also an extra stay in the coronary care unit. Since such episodes of heart standstill may be related to conduction defects, a stud...

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Published inScandinavian cardiovascular journal : SCJ Vol. 34; no. 2; pp. 186 - 191
Main Authors Abdelnoor, M, Nitter-Hauge, S, Risum, O, Svennevig, J L, Amlie, J P
Format Journal Article
LanguageEnglish
Published Copenhagen Informa UK Ltd 2000
Oslo Taylor & Francis
Stockholm Scandinavian University Press
Subjects
Biological and medical sciences
Coronary Artery Bypass - adverse effects
Electrocardiography
Female
Heart Arrest - epidemiology
Heart Arrest - etiology
Humans
Incidence
Male
Medical sciences
Middle Aged
Preoperative Care
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the heart
Time Factors
Human
Cardiocirculatory arrest
Prognosis
QRS interval
Cardiovascular disease
Survival
Electrodiagnosis
Treatment
Aortocoronary
Bypass
Follow up study
Surgery
Electrocardiography
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Summary:Sudden heart arrest (HA) in the early phase after aorto coronary bypass surgery represents a serious event necessitating resuscitation, and for those who survive usually also an extra stay in the coronary care unit. Since such episodes of heart standstill may be related to conduction defects, a study was conducted to determine whether the duration of the QRS complex on the preoperative ECG is a marker for this morbid event. A cohort of 1011 consecutive patients operated on between 1982 and 1986 and followed to January 1st, 1993 were included in the study. Incidence of lethal or non-lethal HA during the first 4 weeks after surgery was considered as the primary endpoint and total mortality as the secondary endpoint. The incidence of HA was 40/1011 = 4%, with the majority of events (60%) being lethal. Independent risk factors of HA using the multivariate logistic model were previous coronary artery bypass surgery, presence of mitral regurgitation, left ventricular ejection fraction and the intraoperative cross-clamp time of aorta. Adjusting for the effect of confounder variables showed that the gradient effect of QRS complex duration on the endpoint HA was still present (p
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ISSN:1401-7431
1651-2006
DOI:10.1080/14017430050142233