murmur

I saw a patient with pulmonary htn. In his left upper parasternal region I heard something abnormal and I'm not sure what it was. It had a pattern of every other pulse. I heard S1-S2 ... S1-S2 and then a whooshing noise. S1S2 ...S1S2-whoosh ...S1S2, etc. I watched and it wasn't timed to his...