forward diastolic pulmonary artery flow , coinciding with right atrial contraction , was observed when diastolic pulmonary artery pressure was reduced during selectively increased left-side contractility , during bradycardia after propranolol injection ( 0.5 mg/kg body wt iv ) , and during the prolonged diastolic interval after spontaneously occurring atrial extrasystoles .
C0428977
bradycardia
C0033497
propranolol