Abnormal Pulses and Possible Etiologies

Abnormal Pulses 

Pulsus alternans: sign of left ventricular systolic dysfunction

Pulsus bigeminus: sign of hypertrophic obstructive cardiomyopathy
(HOCM)

Pulsus bisferiens: in aortic regurgitation

Pulsus tardus et parvus: aortic stenosis

Pulsus paradoxus: cardiac tamponade and tension pneumothorax

Irregularly irregular: atrial fibrillation