title: Possible usefulness of gadolinium-enhanced brain MRI for evaluating risk of perioperative hemorrhage: a case of infective endocarditis.
abstract: A 59-year-old woman visited a local hospital for fever and was diagnosed as having infective endocarditis (IE) on the basis of blood cultures and transthoracic echocardiography. Based on clinical episodes of subarachnoid hemorrhage after admission, it was judged that she was not a good candidate for urgent open heart surgery, and it was decided to treat her with conservative medical therapy for the acute phase. We explored the optimum timing for surgery by employing gadolinium (Gd) contrast medium-enhanced magnetic resonance imaging (MRI) T2* weighted image (black dots) due to her high risk of perioperative cerebral hemorrhage. After the disappearance of the contrast media enhancement effect around the black dots, open heart surgery was performed successfully on the 103rd hospitalization day. The patient was discharged 22 days after the surgery with no clinical complications. This case suggests that disappearance of the contrast media enhancement effect around the black dots may be a useful marker for optimal timing of surgery to minimize the risk of perioperative cerebral hemorrhage in patients with IE. Learning Objective. The MRI T2* weighted images including those with Gd contrast medium enhancement effect may be useful for evaluating the risk of perioperative intracranial hemorrhage in IE.
authors.affiliation: Division of Cardioangiology, Department of Internal Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Chikahiko
authors.initials: C
authors.lastname: Koeda
authors.affiliation: Division of Cardioangiology, Department of Internal Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Tashiro
authors.affiliation: Division of Cardioangiology, Department of Internal Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Takahashi
authors.affiliation: Division of Cardioangiology, Department of Internal Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Masanobu
authors.initials: M
authors.lastname: Niiyama
authors.affiliation: Division of Cardioangiology, Department of Internal Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Ryohei
authors.initials: R
authors.lastname: Sakamoto
authors.affiliation: Division of Cardioangiology, Department of Internal Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Takumi
authors.initials: T
authors.lastname: Kimura
authors.affiliation: Division of Cardioangiology, Department of Internal Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Morino
authors.affiliation: Department of Emergency, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Terui
authors.affiliation: Department of Radiology, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Ryoichi
authors.initials: R
authors.lastname: Tanaka
authors.affiliation: Department of Radiology, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Kunihiro
authors.initials: K
authors.lastname: Yoshioka
authors.affiliation: Department of Cardiovascular Surgery, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Hajime
authors.initials: H
authors.lastname: Kin
authors.affiliation: Department of Cardiovascular Surgery, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Okabayashi
authors.affiliation: Division of Cardioangiology, Department of Internal Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka 020-8505, Japan.
authors.forename: Motoyuki
authors.initials: M
authors.lastname: Nakamura