title: Severe dynamic obstruction of the left ventricular outflow tract induced by dobutamine.
abstract: We present the case of a 63-year-old man who developed a subaortic gradient of 182 mmHg during an echocardiographic pharmacological stress study with dobutamine.
authors.affiliation: Department of Echocardiography, Instituto Nacional de Cardiología "Ignacio Chávez," Juan Badiano No.1, Colonia Sección XVI, Tlalpan, 14080 México, D.F., Mexico.
authors.forename: F J
authors.initials: FJ
authors.lastname: Roldán
authors.forename: J
authors.initials: J
authors.lastname: Vargas-Barrón
authors.forename: N
authors.initials: N
authors.lastname: Espinola-Zavaleta
authors.forename: C
authors.initials: C
authors.lastname: Keirns
authors.forename: A
authors.initials: A
authors.lastname: Romero-Cárdenas
mesh_terms: D001783:Blood Flow Velocity / Q000187:drug effects / Q000502:physiology; D001794:Blood Pressure / Q000187:drug effects; D002316:Cardiotonic Agents / Q000008:administration & dosage / Q000009:adverse effects*; D003937:Diagnosis, Differential; D004280:Dobutamine / Q000008:administration & dosage / Q000009:adverse effects*; D015150:Echocardiography, Doppler / Q000379:methods*; D004562:Electrocardiography; D005080:Exercise Test / Q000009:adverse effects; D006801:Humans; D006973:Hypertension / Q000150:complications; D017379:Hypertrophy, Left Ventricular / Q000175:diagnosis; D007262:Infusions, Intravenous; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction / Q000187:drug effects; D017202:Myocardial Ischemia / Q000175:diagnosis; D012720:Severity of Illness Index; D014694:Ventricular Outflow Obstruction / Q000139:chemically induced* / Q000000981:diagnostic imaging / Q000503:physiopathology
chemical_list: D002316:Cardiotonic Agents; D004280:Dobutamine