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[Sudden arythmogenic death in hospitals after heart surgery]
L A Bokeriia1, R A Serov, A A Mozhina
1A. N. Bakulev Research Center for Cardiovascular Surgery, 121522, Moscow.
Insights
Sudden heart death (SHD) after heart surgery is often linked to complex coronary artery disease and pre-existing heart conditions. Identifying risk factors like left ventricular hypertrophy is crucial for preventing in-hospital fatalities.
Area of Science:
- Cardiology
- Cardiac Surgery
- Pathology
Context:
- Sudden heart death (SHD) is a critical concern in post-cardiac surgery patients.
- A retrospective analysis of 29 SHD cases between 1989-1998 was conducted.
- The study focuses on SHD occurring during the hospital stay after cardiac procedures.
Purpose:
- To identify the primary causes and risk factors associated with sudden heart death following cardiac surgery.
- To analyze the specific cardiac conditions and surgical procedures linked to in-hospital SHD.
- To propose a new term: "sudden heart death at the hospital stage after heart surgery".
Summary:
- Over 50% of SHD cases occurred after aortocoronary shunting in patients with multi-vessel stenosing atherosclerosis.
- Ischemic heart disease (IHD) with complications (e.g., ventricular aneurysm, mitral valve dysfunction) and combined IHD with aortic valve deficiency significantly contribute to SHD risk.
- Common factors in arrhythmogenic SHD include cardiomegaly, myocardial fibrosis, chamber dilatation, endocardial fibroelastosis, and ventricular anomalies.
Impact:
- Highlights the importance of managing complex coronary artery disease and pre-existing cardiac conditions in surgical candidates.
- Provides insights into specific pathological findings associated with arrhythmogenic sudden heart death post-surgery.
- Suggests a refined definition to improve the classification and study of in-hospital cardiac deaths after surgery.
Abstract:
29 cases of sudden heart death (SHD) which occurred in hospital after heart surgery within 1989-1998 are reported. More than 50% were SHD after aortocoronary shunting, it occurred in stenosing atherosclerosis of more than 3 arteries. An important role in tanatogenesis belongs to ischemic heart disease (IHD) with complications (chronic aneurysm of the left ventricle, postinfarction failure of the mitral valve) and combination of IHD with aortal heart deficiency which is followed by pronounced hypertrophy of the left ventricle which is an important factor of SHD risk. Interventricular defects and Fallot's tetrad are most frequent among heart malformations with SHD after heart surgery. Cardiomegaly, myocardial fibrosis, dilatation of the heart cavities, fibroelastosis of ventricular endocardium, anomalous chordal arrangement in the left ventricle, right ventricular lipomatosis are main factors of SHD of the arrhythmogenic type after heart surgery. Introduction of the new notion "sudden heart death at the hospital stage after heart surgery" is suggested.