title: Usefulness of transthoracic Doppler echocardiography for noninvasive assessment of coronary blood flow in a patient with symptomatic myocardial bridging.
abstract: Myocardial bridging (MB) is a congenital anomaly characterized by systolic compression of the tunnelled arterial segment. MB may cause myocardial ischaemia due to abnormal coronary blood flow. We report a case of MB in which transthoracic Doppler echocardiography was used to evaluate the long-term effect of beta-blocker therapy on abnormal coronary blood flow. In this case, beta-blocker therapy with bisoprolol (5.0 mg/day) for 1 month eliminated the patient's symptoms and normalized coronary blood flow through the tunnelled arterial segment.
authors.affiliation: Division of Cardiology, Department of Integrated Medicine and Informatics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Inaba
authors.forename: Hideki
authors.initials: H
authors.lastname: Okayama
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Higashi
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Nishimura
authors.forename: Katsuji
authors.initials: K
authors.lastname: Inoue
authors.forename: Akiyoshi
authors.initials: A
authors.lastname: Ogimoto
authors.forename: Jitsuo
authors.initials: J
authors.lastname: Higaki
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000787:Angina Pectoris / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology; D017298:Bisoprolol / Q000627:therapeutic use; D001783:Blood Flow Velocity; D017023:Coronary Angiography / Q000379:methods; D003326:Coronary Circulation / Q000502:physiology*; D004452:Echocardiography / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008875:Middle Aged; D054084:Myocardial Bridging / Q000150:complications / Q000000981:diagnostic imaging*; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome
chemical_list: D000319:Adrenergic beta-Antagonists; D017298:Bisoprolol