A series of 95 cases of myocardial infarction observed at Sacred Heart Hospital, Chung-A,
University has been studied.
1. The average age of entire group was 58.8 years that of woman being 60.2 years while that of man was 57.8 years. The. greatest frequency of - myocardial infarction is in 5th and 6 th decades.
2. Of the 51 cases of acute myocardial infarction, 6 cases was the 2 nd attack.
3. Commnon precipitating factors were physical exercise (7.8%), alcoholic intake (5.9%), emotional stress (3.9%), heavy meals (3.9%), physical stress (3.9%) etc. In this series there were such apparent precipitating factors in 33.3 percent of the cases, in the remaining 66.7 percent, no apparent precipitating factor was revealed.
4. As the underlying diseases, hypertension occured in 31.6% of this series, diabetes mellitus in 4.2%, hypertension associated with diabetes mellitus in 6.3%, angina pectoris in 7.4%, obesityin 3.4% respectively.
5. Hospital admission during first 24 hours after attack was 43.1% and 64.6% of total cases were within 72 hours, while remaining 17.6% of this series were over 10 days.
6. Precordial pain, main symptom of acute myocardial infarction was occured in 78.4% of this series and the next was dyspnea in some degree followed in 35.3%, palpitation in.23.5%,; sweating in 13.7%, epigastric pain in 11.8% in decreasing order of frequency.
There was no chest pain in 13.7% (7 cases) of patients excluding 4 cases of comatose mental state.
7. The locations of myocardial infarction as determined by electrocardiogram was predominantly in anterior wall and the ratio of anterior to post= erior wall was apparently 2.2:1.
8. The common associated electrocardiographic abnormalitis included ventricular premature beat and left ventricular hypertrophy 19.6%, sinus
tachycardia 17.6%, low voltage 9.8%, sinus arrhythmia and ventricular tachycardia 7.8%.
9. In acute myocardial infarction, leukocytosis was observed in 42.9% and elevated SGOT in 41.3%, SGPT and SLDH were elevated in 22.1%, 51.3% of this series.
10. As the complications,, sudden death was 2.0 %, cardiogenic shock 7.8%, cardiac arrest -2.0%, varing degree of arrythmia 44.5%, pericardial effusion 7.8%, pleural effusion 5.9% and congestive heart failure 21.6% of this series.
11. The frequency of complications were generally correlated with change of ST segment in electrocardiogram, width in location of infarction and the serum enzyme levels of SGOT, SGPT and SLDH.
12) Tfte motality ratio was 15.7% (8 cases of this series) and causes of death were included in sudden death of unknown origin 2.0%, cardiogenic shock 2.0%, cengestive heart failure 3.9%, ventricular dysrhythmia superimposed congestive heart failure 5.9% (2 of 3 cases) and undeternined 2.0%.
|