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KMID : 0378019730160020109
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New Medical Journal
1973 Volume.16 No. 2 p.109 ~ p.115
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Incidence of Arrhythmias during Anesthesia
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Abstract
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Incidence of arrhythmias during anesthesia increases in their frequency, because of the average sur￢gical patients tend to be older than in the past. And cardiovascular surgery was performed more frequently to-day.
Prompt recognition, skillful treatment and prevention of the cardiac arrhythmias may determine the successful outcome of the anesthesia and surgery.
Out of the total 1370 surgical cases, 256 cases were selected for evaluation of cardiac condition during surgery, because the latter were suspected to have some cardiac problems preoperatively.
Of these 256 cases, ECG was checked preoperatively and the incidence of arrhythmias during anes￢thesia were observed.
The results were as follows;
1. Arrhythmias had been found preoperatively in 84 cases among the 256 cases studied (32.8%). The incidence of arrhythmia for the total 1370 surgical patients was 6.1%.
2. In the above 84 cases, 30 cases developed arrhythmia during anesthesia (35.7%). The remaining 172 cases which had showed normal cardiac rhythm preoperatively, developed arrhythmia in 36 cases (20.8%). Therefore, out of the 256 cases, 66 cases developed arrhythmia during anesthesia (25.8%).
3. Types of arrhythmias found during anesthesia were ventricular premature contraction (40.9%), sinus tachycardia (36.4%), atrial premature contraction (9.1%), sinus bradycardia (7.6%), right bundle branch block (1.5%), left bundle branch block(1.5%), atrial fibrillation(1.5%) and ventricular fibrillation (1.5%).
4. Incidence of arrhythmias concerning about sex was 53.0>% in the male and 47.0% in the female. 5. For the types of the surgery, high incidence of arrhythmia was found in the dental, E. N. T. ,
and urological surgery. (The majority number of the patients were the geriatric cases.)
6. Incidence of arrhythmias concerning about the anesthesia time were 59.1% within 3 hours of
anesthesia and 40.9% over 3 hours of anesthesia.
7. The incidence of arrhythmias during the induction period was 45.5% and during the mrii tenance period was 28.8%. And incidence of arrhythmias through induction period to maintenance period was 25.7%.
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