Reversed splitting of S2 heart sound is heard in
Reversed splitting of heart sound S2 is seen in:

Aortic stenosis
PDA
Complete LBBB
WPW syndrome
Chronic ischemic heart disease
Post stenotic dilation of aorta secondary to aortic stenosis
Ventricular septal defect
RBBB
Acute pulmonary embolism
LBBB