A Comparative Study of Echocardiographic Dilated Cardiomyopathy According to Its Etiologic Factors

The characteristics of echocardiographic dilated cardiomyopathy according to its etiologic factors were studied from June, 1984 to September, 1986 in Pusan national University Hosptial. The cases included in the study were 144 patients, 90 cases of male and 54 cases of female respectively ranging the age from 17 years old to 79 years old. Patients with valvular heart disease were excluded in this study. The results were as follows: 1) Primary dilated cardiomyopathy was 40.3%, and secondary dilated cardiomyopathy was 59.7% of the study group. In secondary dilated cardiomyopathy, its etiologic factors were hypertension 17.4%, ischemic heart disease 27.8%, thyrotoxicosis 5.6%, chronic renal failure 4.8%, pregnancy 3.4% and alcohol drinking 0.7%. 2) Atrial fibrillation was noted in 32.6% of primary, 36.0% of hypertensive, 30.0% of ischemic and 62.5% of toxic cardiomyopathy. Conduction disturbance was noted in 57.1% of uremic cardiomopathy, it was far more frequent comparing with other cases of cardiomyopathy ranging 20-30%. 3) The frequency of end-diastolic internal dimension of left ventricle over 6.0cm was 58.6% in primary, 68.0% in hypertensive, 75.0% in ischemic, 71.4% in uremic and 40.0% in postpartum cardiomyopathy. 4) The frequency of ejection fraction of left ventricle below 40% was 17.2% in primary, 8.0% in hypertensive, and 28.2% in ischemic cardiomyopathy. 5) The paradoxical motion of anteroseptal wall of left ventricle was observed in 6.9% of primary, 4.0% of hypertensive, and 17.5% of ischemic cardiomyopathy. The ratio of anteroseptal wall motion to posterior wall motion below 0.4 was 15.6% in primary, 20.0% in hypertensive, and 25.0% in ischemic cardiomyopathy. 6) The frequency and grade of mitral regurgitation became increased with the dilatation of left ventricle. 7) The follow-up of cardiothoracic ratio was helpful significantly in the prediction of prognosis.

Clinical Observation on Effect of Nicorandil in Angina Pectoris

We evaluated the clinical effects of Nicorandil in 27 patients (17 male and 10 female) with ischemic heart disease (17 patients of stable effort angina, 3 patients of unstable effort angina, 6 patients of spontaneous angina, 1 patient of variant angina) in terms of the effect on the anginal pain, electrocardiographic changes and side effects. The results obtained were as follows; 1. The pulse rate was not changed by the drug administration and blood pressure were decreased slightly by Nicorandil in a daily dose of 15 mg divided into 3 dose, but these decrease were not significant in statistical meaning. 2. Improvement in EKG changes was observed in 9 patients (69%) among the 13 patients who showed abnormal EKG initially. 3. Anti-anginal effect of nicorandil were excellent in 14 patients, good in 8 patients, fair in 3 patients and so the rate of global improvement was 82%. 4. Nicorandil had side effects in 7 patients, headache (4 patients), palpitation, ocular pain, edema, but these were transitory and tolerable except of one case who could not be continued because of severe headache.

A Clinical Trial on Antihypertensive Effect of Pindolol(Visken(R))

The antihypertensive effect and side reaction of pindolol were studied in 48 cases of essential hypertension 5mg to 15mg once regiment for average period of 6 weeks. 1) Average reduction of 25.11mmHg in systolic and 16.36mmHg in diastolic pressure were observed and their percentile reduction was 15.20% and 14.79%, respectively. The overall effect rate was 83.21%. The blood pressure was lowered significantly since 1 week of both in systolic and diastolic pressure with the daily of 10-15mg. 2) There was no significant change in heart rate before and after treatment. 3) No specific side reaction was observed except 1 cases in which discontinued the medication because of severe headache and fatigability on 2nd day of medication.

A Clinical Trial on Antihypertensive Effect of Nicardipine Hydrochloride

The antihypertensive effect and side reactions of perdipine was studied in 22 cases of essential hypertension using 20mg 3 times daily regimen for average period of 5 weeks. 1) Average reduction of 20mmHg in systolic and 17mmhg in diastolic pressure was observed and percentile reduction was 11.90% and 14.92%, respectively. The overall effect rate was 81.82%. The blood pressure lowered significantly after 2 weeks of treatment both in systolic and diastolic pressure. 2) There was no significant change in heart rates before and after treatment. 3) No specific side reaction was observed except 1 case in which discontinued the medication because of severe headache and fatigability on the 1st day of medication.