Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Kouichi Hasegawa is active.

Publication


Featured researches published by Kouichi Hasegawa.


Journal of the American College of Cardiology | 1985

Left recurrent laryngeal nerve palsy associated with primary pulmonary hypertension and patent ductus arteriosus

Masatoshi Nakao; Toshitami Sawayama; Masanobu Samukawa; Hirotoshi Mitake; Shoso Nezuo; Hideo Fuseno; Kouichi Hasegawa

Two patients with left recurrent laryngeal nerve paralysis in association with pulmonary artery hypertension are described. One had primary pulmonary hypertension and the other had patent ductus arteriosus. The greatly dilated pulmonary artery in these patients resulted in compression of the left recurrent laryngeal nerve and produced a cardiovocal (Ortners) syndrome. The pathogenesis of the vocal cord palsy was documented by cross-sectional computed tomography. In conclusion, computed tomography is of great help in differentiating this syndrome from other diseases such as mediastinal mass or lymphadenopathy whenever hoarseness is complicated by pulmonary hypertension.


Nihon Naika Gakkai Zasshi | 1988

運動負荷後の回復期に収縮期血圧が再上昇する“異常血圧反応”例に関する検討-冠動脈疾患例について

Shozo Nezuo; Shinichiro Tadaoka; Masatoshi Nakao; Kouichi Hasegawa; Satoshi Kakumae; Takashi Nakamura; Yosuke Kawahara; Shozo Inoue; Toshitami Sawayama

概 要 冠動 脈疾 患 を疑 ってtreadmill(T)負 荷試 験 を行 なった症例 の うち,回 復期 の収縮 期血 圧 が 終了時 よ りも15mmHg以 上上 昇 した35例 につ いて検討 した.24例 は器質 的冠狭 窄(≧75%) を認 め多枝病 変 例が 多か ったが,11例 は正常冠動 脈例 であ った.両 群 と も負 荷中 の血 圧上 昇度 が低 く(19±14mmHg,18±20mmHg),終 了時 におけ るST下 降(-0 .14±0.10mV,-0.18± 0.08mV), P-TFの 著 明 な増 大(4.3±33msec・mV,3.0±1.8msec・mV)を 示 す例 が多 かった. 前 者 は後者 に比 して,T時 間 が短 く,回 復 期の血圧 再上昇 の程度 が著 し く,持 続 時間 の長 い例 が 多か った.回 復 期の血圧 再 上昇 には,重 症 冠動脈 疾患等 にお け る負荷 中の強 い心筋虚 血 に よる 左 心機能 の抑 制 や,最 大運動 負荷 の影響 が考 え られ た.〔日 内会 誌 77:1383~1387, 1988〕


Heart and Vessels | 1988

Right ventricular outflow obstruction secondary to post-infarction aneurysm: A possible new syndrome

Kouichi Hasegawa; Toshitami Sawayama; Satoshi Kakumae; Takashi Nakamura; Shoso Nezuo; Masanobu Samukawa; Kazuhiro Mitani

SummaryTwo patients with extensive anterior myocardial infarction developed a hitherto unreported type of right ventricular outflow tract obstruction. A 71-year-old woman, who had had an acute infarction 10 years before, was admitted for sustained ventricular tachycardia. A loud ejection murmur was heard in the mid-precordium. The echocardiogram and left ventriculogram showed a septal aneurysm, with a systolic gradient of 21 mmHg between the right ventricular outflow tract and apex. The ejection murmur was detected in the outflow tract by intracardiac phonocardiography. The second patient was a 60-year-old man who had had an acute infarction at age 47. He was also referred because of ventricular tachycardia, and his clinical situation was almost the same as that of the first case. Our search of the literature failed to disclose any similar case with a loud ejection murmur confirmed by intracardiac phonocardiography to be due to an obstructive septal aneurysm.


Cardiovascular Research | 1991

Effect of left ventricular hypertrophy secondary to systemic hypertension on left coronary artery flow dynamics

Shinichiro Tadaoka; Yoshifumi Wada; Akihiro Kimura; Toyotaka Yada; Keiji Tamura; Kouichi Hasegawa; Shoso Nezuo; Toshitami Sawayama; Katsuhiko Tsujioka; Fumihiko Kajiya


Journal of Hypertension | 2012

190 WEIGHT LOSS PREVENTS THE DEVELOPMENT OF HYPERTENSION

Hideki Takizawa; Nobuyuki Ura; Kouichi Hasegawa; Haruki Sasaki; Nagisa Hanawa; Hiroshi Akasaka; Shigemichi Tanaka


Japanese Circulation Journal-english Edition | 2002

Angiotensin II affects insulin sensitivity with reference to skeletal muscle TNF-α and cAMP

Koichi Yamaguchi; Nobuyuki Ura; Nobuhiko Togashi; Masaya Hyakukoku; Makoto Hagiwara; Kouichi Hasegawa; Masato Furuhashi; Hideyuki Murakami; Katsuhiro Higashiura; Kazuaki Shimamoto


Japanese Journal of Electrocardiology | 2001

Differential diagnosis of anterior wall myocardial ischemia and left ventricular hypertrophy by means of T wave inversion in 12-leads ECG

Reishi Izumi; Ryoji Suetsuna; Seiichi Yamamoto; Satoko Miyai; Chisato Wakasa; Atsuko Kajitani; Fukiko Nakatsuka; Kiyoshi Yoshida; Toshitami Sawayama; Kouichi Hasegawa


Shinzo | 1991

Mechanism of QTc prolongation during treadmill exercise test in patients with hypertrophic cardiomyopathy.

Shoso Nezuo; Shinichiro Tadaoka; Shozo Inoue; Junji Tanaka; Keiji Tamura; Takashi Nakamura; Yousuke Kawahara; Kouichi Hasegawa; Toshitami Sawayama; Kouichi Morita


Shinzo | 1991

Two cases of massive pulmonary embolism simulating electrocardiographic findings of acute right ventricular infarction

Kouichi Hasegawa; Keiji Tamura; Toshitami Sawayama; Shoso Nezuo; Junji Tanaka; Shozo Inoue; Yousuke Kawahara; Shinichiro Tadaoka


Japanese Circulation Journal-english Edition | 1990

-0085-TREADMILL EXERCISE TEST IN PATIENTS WITH HYPERTROPHIC CARDIOMYOPATHY WITH AND WITHOUT CORONARY ARTERY DISEASE

Toyotaka Yada; Shoso Nezuo; Toshitami Sawayama; Kouichi Hasegawa; Shinichiro Tadaoka; Yoshifumi Wada

Collaboration


Dive into the Kouichi Hasegawa's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar

Shoso Nezuo

Kawasaki Medical School

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge