Japanese Circulation Journal

Journal Information
ISSN / EISSN : 00471828 / 13474839
Current Publisher: Japanese Circulation Society (10.1253)
Total articles ≅ 5,776
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Latest articles in this journal

Yasuhiro Maejima, Takanori Yasu, Naoki Fujiwara, Takeshi Ishida, Yasuyuki Kobayashi, Masatoshi Kuroki, Norifumi Kubo, Mikihisa Fujii, Muneyasu Saito
Japanese Circulation Journal, Volume 65, pp 1091-1092; doi:10.1253/jcj.65.1091

A 64-year-old man was admitted to hospital under the suspicion of unstable angina pectoris. Coronary angiography showed that he has a single coronary artery originating from the right coronary artery (RCA) without significant fixed stenosis. Acetylcholine was superselectively infused into the left main coronary artery (LMCA), and confirmed the coronary vasospastic occlusion associated with chest pain and elevation of the ST-segment in the precordial leads. This is the first report of the induction of a totally occlusive spasm of the LMCA of a patient with a RCA type single coronary artery, and this case suggests that spasm of the aberrant coronary artery is a potential mechanism for sudden death in patients with a single coronary artery.
Akira Fujiki, Kunihiro Nishida, Koichi Mizumaki, Hidehiko Nagasawa, Mayumi Shimono, Hiroshi Inoue
Japanese Circulation Journal, Volume 65, pp 1087-1090; doi:10.1253/jcj.65.1087

The net effects of sympathetic and vagal activity on the QT interval and the mode of spontaneous onset of torsade de pointes (TdP) are still unclear in long-QT syndrome. Two patients with long-QT syndrome had syncope while undergoing Holter ECG investigation. The spontaneous onset of TdP in these patients was analyzed with respect to the relation between the RR and QT intervals. Both patients were high-school students (16- and 17-year-old boys) who had been diagnosed as long-QT syndrome and followed up without medical treatment because they had had neither a history of syncope nor arrhythmia induction by treadmill exercise tests. The first episode of syncope in both patients occurred during ordinary daily life and was not related to exercise or psychological stress. The dynamic changes between the RR and QT intervals associated with the spontaneous onset of TdP were analyzed by Holter ECG. Both patients showed sinus tachycardia followed by abrupt sinus bradycardia immediately before the onset of TdP. The enhanced rate of the adaptive response of the QT interval that occurred during the deceleration of the heart rate preceded the onset of TdP. These observations suggest that the complex situation that follows sympathovagal imbalance may have an important role in the dynamic change in the QT interval and initiation of TdP in patients with long-QT syndrome.
Kimihiro Tanaka, Motohiro Kawauchi, Yoshihiro Murota, Akira Furuse
Japanese Circulation Journal, Volume 65, pp 1085-1086; doi:10.1253/jcj.65.1085

The present study reports a case of the successful surgical repair of a ruptured infra-renal mycotic abdominal aorta with Enterobactor cloacae in a 66-year-old man. During the operative procedure, an extra-anatomic bypass was installed before the laparotomy in order to avoid bacterial contamination. A complete resection of the infected aorta, tapering of the arterial stumps, wrapping of the omentum, and ligation of the aorta and arteries with Teflon tapes was carried out. The patient is alive and well 1 year postsurgery.
Manabu Takei, Masato Tsuboi, Tatsuya Usui, Takeshi Hanaoka, Fumio Kurogouchi, Masakazu Aruga, Yuuichi Katagiri, Mafumi Owa, Keishi Kubo, Kendo Kiyosawa
Japanese Circulation Journal, Volume 65, pp 1077-1081; doi:10.1253/jcj.65.1077

Atrial electrical remodeling is thought to be the cause of the maintenance of atrial fibrillation (AF). Although the initiation and maintenance of AF is partially associated with autonomic nervous tone, vagally mediated AF does not tend to become permanent. Therefore, the effects of preceding vagal stimulation (VS) on the atrial effective refractory period (ERP) under electrical remodeling conditions were investigated in anesthetized dogs. Atrial ERPs were measured at 5 sites before and after a 7-h period of atrial rapid pacing in the control group. In the VS group, the vagus nerve was stimulated for 20 min before a period of atrial rapid pacing. Atrial rapid pacing shortened the ERP at each site in the control group (electrical remodeling). On the other hand, atrial rapid pacing after VS did not shorten the ERP at any site in the VS group. Tetrodotoxin, which was administered into the fatty tissue overlying the right atrial side of the right pulmonary vein junctions, blocked the protective effect of VS against the shortening of the ERP induced by atrial rapid pacing. In contrast, atropine did not interfere with such protective effects. These results suggest that VS prior to atrial rapid pacing protects the atrium from atrial electrical remodeling.
Michiyo Takayama, Yoshinori Ebihara, Masato Tani
Japanese Circulation Journal, Volume 65, pp 1071-1076; doi:10.1253/jcj.65.1071

The publisher has not yet granted permission to display this abstract.
K Takeuchi, M Nagashima, K Itoh, M Minagawa, M Munakata, I Ichinoseki, K Fukui, F X McGowan, P J Del Nido
Published: 1 December 2001
Japanese Circulation Journal, Volume 65

The publisher has not yet granted permission to display this abstract.
N Ueda, Y Kaji, T Maruyama, E Shimoike, H Ito, T Fujino, Y Niho, M Harada
Published: 1 December 2001
Japanese Circulation Journal, Volume 65

The publisher has not yet granted permission to display this abstract.
Tetsuya Matsumoto, Hajime Horie, Kazuo Minai, Hiroshi Yokohama, Hiroyuki Takashima, Naoto Ohira, Takashi Tsutui, Masayuki Takahashi, Masahiko Kinoshita
Japanese Circulation Journal, Volume 65, pp 1052-1056; doi:10.1253/jcj.65.1052

The publisher has not yet granted permission to display this abstract.
Akira Fujiki, Hidehiko Nagasawa, Masao Sakabe, Kenji Sakurai, Kunihiro Nishida, Koichi Mizumaki, Hiroshi Inoue
Japanese Circulation Journal, Volume 65, pp 1047-1051; doi:10.1253/jcj.65.1047

The publisher has not yet granted permission to display this abstract.
Toshiki Matsui, Takayoshi Tsutamoto, Masahiko Kinoshita
Japanese Circulation Journal, Volume 65, pp 1041-1046; doi:10.1253/jcj.65.1041

Cardiac sympathetic nervous function is altered in congestive heart failure (CHF) and the uptake and washout rate of cardiac 123I-metaiodobenzylguanidine (MIBG) are useful markers for evaluating the severity of it. To assess what parameters predict decreased uptake or increased washout rate of MIBG, the concentrations of neurohumoral factor in both the aorta (Ao) and coronary sinus (CS) were measured, as well as hemodynamic parameters by catheterization, in patients with dilated cardiomyopathy (DCM). MIBG imaging was performed within 1 week of cardiac catheterization. Regarding MIBG parameters, the correlation with the transcardiac gradient of norepinephrine (NE), brain natriuretic peptide (BNP) and hemodynamics was investigated. Stepwise multivariate regression analysis was used to determine which variables closely correlated with cardiac MIBG parameters. There was a significant increase in the NE level between the Ao (446 pg/ml) and the CS (727 pg/ml). According to stepwise multivariate regression analysis, the heart/mediastinum (H/M) ratio independently correlated with the transcardiac gradient of BNP (r=-0.480, p
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