title: Evaluation of cardiac resynchronization therapy in drug-resistant idiopathic dilated cardiomyopathy by means of technetium-99m tetrofosmin electrocardiography-gated single-photon emission computed tomography.
abstract: The present case report describes a 72-year-old woman with drug-resistant heart failure. Cardiac resynchronization therapy was performed. Cardiac function was evaluated using a quantitative gated single-photon emission computed tomography (QGS) program with technetium-99m tetrofosmin. During atrial-right ventricular pacing, the left ventricular ejection fraction (LVEF) was 28%, end diastolic volume (EDV) was 141 mL and end systolic volume (ESV) was 101 mL. LVEF was 31%, EDV was 142 mL and ESV was 98 mL during dual chamber pacing. During atrial-left ventricular pacing, LVEF, EDV and ESV were 32%, 18 mL and 100 mL, respectively. Diastolic function was evaluated using Vcdiff software (Daiichi Radioisotope Laboratories Ltd, Japan). Cardiac resynchronization therapy may improve cardiac function, which was evaluated accurately and non-invasively by electrocardiography-gated single-photon emission computed tomography.
authors.affiliation: Department of Cardiovascular and Respiratory Medicine;
authors.forename: Shinro
authors.initials: S
authors.lastname: Matsuo
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Matsumoto
authors.forename: Ichiro
authors.initials: I
authors.lastname: Nakae
authors.forename: Makoto
authors.initials: M
authors.lastname: Ito
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Masahiko
authors.initials: M
authors.lastname: Takada
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Murata
authors.forename: Minoru
authors.initials: M
authors.lastname: Horie