Table-II.

Pre-operative clinical status.

Variables	Normal Ef (>50) (n=625)	Mild to moderate Ef (35-50%) (n=484)	Severly reduced Ef (<35%) (n=105)
Nyha classification
Nyha class 1(%)	6(1.1)	9(1.9)	1(1.0)
Nyha class 2(%)	71(11.4)	51(10.5)	3 (2.9)
Nyha class 3 (%)	252(40.3)	198(40.9)	50(47.6)
Nyha class 4 (%)	221 (35.4)	170(35.1)	38 (36.2)
Ccs classification
Ccs class 1 (%)	54(8.6)	46(9.5)	7(6.7)
Ccs class 2 (%)	246(39.4)	177(36.3)	44(41.9)
Ccs class 3 (%)	272(43.5)	208( 43.3)	44(41.9)
Ccs class 4 (%)	27(4.3)	33(6.8)	6(5.7)