title: Acute effect of sublingual nifedipine on right ventricular systolic time intervals in primary pulmonary hypertension--an echocardiographic study.
mesh_terms: D000293:Adolescent; D000328:Adult; D002302:Cardiac Output / Q000187:drug effects*; D002648:Child; D004452:Echocardiography; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy*; D008297:Male; D009543:Nifedipine / Q000008:administration & dosage / Q000627:therapeutic use*; D013318:Stroke Volume / Q000187:drug effects*
chemical_list: D009543:Nifedipine