Table 1.

Characteristics of patients.

Group	Group A (n : 38)		Group B (n : 36)		Group C (n : 26)		Mean
Sex	Male (n : 17)	Female (n : 21)	Male (n : 16)	Female (n : 20)	Male (n : 16)	Female (n : 10)	n : 100
Age (year)	41.3 ± 26.5	35.8 ± 21.6	43.3 ± 21.5	47.9 ± 22.8	54.3 ± 32.3	55.7 ± 31.9	46.3 ± 21.9
Patients <18 years	3	4	2	3	4	2	18
Patients 18–60 years	9	11	9	13	8	7	57
Patients >60 years	5	6	5	4	4	1	25
Initial complaint of patients
Dispnoea	16	17	14	18	15	9	89
Palpitation	4	11	12	14	14	6	61
Pretibial edema	3	7	12	14	6	6	48
Tachycardia (100 beats/min)	14	18	14	16	12	8	82
QRS alternation	7	6	4	5	4	3	29
Low QRS voltage	14	18	12	16	13	8	81
Hemodynamic status
Echocardiographic tamponade	8	10	6	11	8	5	48
Clinical tamponade	9	8	8	8	7	4	44
Hemodynamic collapse	1	2	2	1	1	1	8