Japanese circulation journal最新文献_第7页

Determination of coronary zero flow pressure by analysis of the baseline pressure-flow relationship in humans. 通过分析人类基线压力-流量关系来确定冠状动脉零流压。

Japanese circulation journal Pub Date : 2001-08-20 DOI: 10.1253/JCJ.65.793

S. Nanto, Tohru Masuyama, Yuzuru Takano, M. Hori, Seiki Nagata

{"title":"Determination of coronary zero flow pressure by analysis of the baseline pressure-flow relationship in humans.","authors":"S. Nanto, Tohru Masuyama, Yuzuru Takano, M. Hori, Seiki Nagata","doi":"10.1253/JCJ.65.793","DOIUrl":"https://doi.org/10.1253/JCJ.65.793","url":null,"abstract":"The present study seeks to estimate the difference between coronary zero flow pressure (Pzf) by analysis of the baseline pressure-flow relationship and the Pzf calculated during a long diastole in humans. Although Pzf is likely to provide meaningful information about the characteristics of coronary circulation, there are no available data on Pzf in humans because Pzf is overestimated when it is calculated during normal cardiac cycles. Actual Pzf was determined in 15 subjects by analyzing the coronary pressure-flow relationship during a long cardiac cycle induced by an intracoronary adenosine triphosphate (ATP) infusion, and it was compared with the Pzf calculated during a normal cardiac cycle in order to estimate the difference. Pzf calculated during a normal cardiac cycle was 47 +/- 15 mmHg, which decreased to 36 +/- 9mmHg after intracoronary administration of ATP (0.05 mg) whereas actual Pzf was 21 +/- 7 mmHg. Pzf calculated in a pressure-flow relationship during a normal cardiac cycle under vasodilation correlated well with that during a long diastole (r = 0.75, p < 0.01), although it was 15 +/- 6 mmHg greater than the actual Pzf. It was concluded that Pzf during a normal cardiac cycle could be used to anticipate Pzf.","PeriodicalId":14544,"journal":{"name":"Japanese circulation journal","volume":"35 1","pages":"793-6"},"PeriodicalIF":0.0,"publicationDate":"2001-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76159178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Conservative treatment of hemolytic complication following coil embolization in two adult cases of patent ductus arteriosus. 2例成人动脉导管未闭线圈栓塞后溶血并发症的保守治疗。

Japanese circulation journal Pub Date : 2001-08-20 DOI: 10.1253/JCJ.65.834

K. Eda, S. Ohtsuka, Y. Seo, S. Yamada, M. Ishiyama, T. Miyamoto, H. Horigome, I. Yamaguchi

引用次数: 11

Role of hypertension, dyslipidemia and diabetes mellitus in the development of coronary atherosclerosis in Japan. 高血压、血脂异常和糖尿病在日本冠状动脉粥样硬化发展中的作用。

Japanese circulation journal Pub Date : 2001-07-20 DOI: 10.1253/JCJ.65.731

Masakazu Washio, S. Sasazuki, H. Kodama, Kouichi Yoshimasu, Ying Liu, Keitaro Tanaka, Shoji Tokunaga, Suminori Kono, Hidekazu Arai, Samon Koyanagi, K. Hiyamuta, Y. Doi, T. Kawano, Osamu Nakagaki, K. Takada, T. Nii, Kazuyuki Shirai, M. Ideishi, Kikuo Arakawa, M. Mohri, Akira Takeshita

{"title":"Role of hypertension, dyslipidemia and diabetes mellitus in the development of coronary atherosclerosis in Japan.","authors":"Masakazu Washio, S. Sasazuki, H. Kodama, Kouichi Yoshimasu, Ying Liu, Keitaro Tanaka, Shoji Tokunaga, Suminori Kono, Hidekazu Arai, Samon Koyanagi, K. Hiyamuta, Y. Doi, T. Kawano, Osamu Nakagaki, K. Takada, T. Nii, Kazuyuki Shirai, M. Ideishi, Kikuo Arakawa, M. Mohri, Akira Takeshita","doi":"10.1253/JCJ.65.731","DOIUrl":"https://doi.org/10.1253/JCJ.65.731","url":null,"abstract":"The present study evaluated the effect of hypertension (HT), dyslipidemia and diabetes mellitus (DM) on the development of coronary atherosclerosis in the Japanese population, using a cross-sectional study of 433 patients (254 men and 179 women) aged 30 years or older who underwent coronary angiography for suspected or known coronary heart disease angina at 5 cardiology departments in the Fukuoka area between September 1996 and August 1997. Patients with a disease duration of 6 months or more were excluded. The main outcome measure was angiographically defined coronary artery stenosis and was found to a significant degree in 146 patients (33.7%). HT, DM, low levels of high-density lipoprotein cholesterol (HDL-C) and hypertriglyceridemia remained as significant coronary artery disease (CAD) risk factors even after controlling for age, sex, hospital, smoking, alcohol use, body mass index and leisure time physical activity. However, hypercholesterolemia was not a significant risk factor after adjusting for these variables. After controlling for these variables, DM, low HDL-C and hypertriglyceridemia were significant CAD risk factors for men, but only DM was a significant CAD risk factor in women. These results indicate that in Japan DM, low HDL-C and hypertriglyceridemia may be more important CAD risk factors than hypercholesterolemia.","PeriodicalId":14544,"journal":{"name":"Japanese circulation journal","volume":"19 1","pages":"731-7"},"PeriodicalIF":0.0,"publicationDate":"2001-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89642438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 40

Influence of cyclic variation of right ventricular volume on left ventricular mechanical parameters measured with conductance catheter. 右心室容积循环变化对电导导管测量左心室力学参数的影响。

Japanese circulation journal Pub Date : 2001-07-20 DOI: 10.1253/JCJ.65.749

Y. Tanoue, Shigeki Morita, M. Hisahara, Ryuji Tominaga, Yoshito Kawachi, Hisataka Yasui

{"title":"Influence of cyclic variation of right ventricular volume on left ventricular mechanical parameters measured with conductance catheter.","authors":"Y. Tanoue, Shigeki Morita, M. Hisahara, Ryuji Tominaga, Yoshito Kawachi, Hisataka Yasui","doi":"10.1253/JCJ.65.749","DOIUrl":"https://doi.org/10.1253/JCJ.65.749","url":null,"abstract":"The conductance catheter is widely used for the continuous measurement of the left ventricular (LV) pressure-volume loops. Cyclical change of the right ventricular (RV) volume may alter the parallel conductance volume, thereby affecting the LV mechanical parameters. Using 8 open-chest adult mongrel dogs, multiple LV pressure-volume loops were obtained by 2 methods: first with a vena cava occlusion (VCO) method, which involved RV volume alteration, and second with a right-heart-bypass (RHB) preparation, which decompressed the right ventricle completely. The slope of the end-systolic pressure-volume relation (Ees), the end-systolic volume associated with the end-systolic pressure of 100 mmHg (V100,es), stiffness constant (beta), and the end-diastolic volume associated with the end-diastolic pressure of 9 mmHg (V9,ed) were calculated from each loop. There was minimal influence from RV volume alteration on systolic-phase indices [Ees (VCO method, 6.37 +/- 1.91 mmHg/ml; RHB preparation, 6.60 +/- 1.66mmHg/ml; p=0.356), and V100,es (VCO method, 18.4 +/- 9.3ml; RHB preparation, 17.8 +/- 9.0 ml; p=0.681)], but there was a significant influence on diastolic-phase indices [beta (VCO method, 0.0599 +/- 0.0152; RHB preparation, 0.0839 +/- 0.0150; p=0.007), and V9,ed (VCO method, 35.6 +/- 11.3 ml; RHB preparation, 31.9 +/- 12.3 ml; p=0.001)]. The increase in the RV volume in the diastolic phase increased the parallel conductance volume, causing overestimation of the LV diastolic volume measured by the conductance catheter.","PeriodicalId":14544,"journal":{"name":"Japanese circulation journal","volume":"11 1","pages":"749-52"},"PeriodicalIF":0.0,"publicationDate":"2001-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78581470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Recurrence of idiopathic thromboembolism during anticoagulant therapy. 抗凝治疗期间的特发性血栓栓塞复发。

Japanese circulation journal Pub Date : 2001-07-20 DOI: 10.1253/JCJ.65.755

K. Tanimoto, K. Mizushige, K. Yukiiri, T. Ueda, W. Yoshihiro, K. Ohmori, M. Kohno

引用次数: 4

Apoptosis, rather than oncosis, is the predominant mode of spontaneous death of isolated adult rat cardiac myocytes in culture. 细胞凋亡，而不是肿瘤，是培养中分离的成年大鼠心肌细胞自发死亡的主要模式。

Japanese circulation journal Pub Date : 2001-07-20 DOI: 10.1253/JCJ.65.743

S. Kato, G. Takemura, R. Maruyama, T. Aoyama, K. Hayakawa, M. Koda, Y. Kawase, Y. Li, S. Minatoguchi, T. Fujiwara, H. Fujiwara

{"title":"Apoptosis, rather than oncosis, is the predominant mode of spontaneous death of isolated adult rat cardiac myocytes in culture.","authors":"S. Kato, G. Takemura, R. Maruyama, T. Aoyama, K. Hayakawa, M. Koda, Y. Kawase, Y. Li, S. Minatoguchi, T. Fujiwara, H. Fujiwara","doi":"10.1253/JCJ.65.743","DOIUrl":"https://doi.org/10.1253/JCJ.65.743","url":null,"abstract":"A number of isolated adult cardiomyocytes dies within a few days of culture and the mode of death has recently been suggested to be apoptosis, based on its association with the appearance of DNA fragmentation. However, morphological evidence is still lacking and precise analysis, including quantification, has not been performed. Adult rat ventricular cardiomyocytes isolated by enzymatic dissociation were incubated for 7 days in a serum-free medium (the rapid attachment model) and after various incubation periods, both attached and floating cells were counted and classified based on combined criteria of morphology and membrane permeability (dye exclusion): type 1, rod cells with intact membranes; type 2, non-rod cells with intact membranes; and type 3, non-rod cells with ruptured membranes. The number of both rod-shaped and dye-excluding cells decreased with the incubation period. After 7 days culture, the number of residual cells decreased to 12% of the initial value. Electron microscopy identified type 1 cells as viable, type 2 cells as viable or apoptotic, and type 3 as undergoing oncosis (primary necrosis) or secondary post-apoptotic necrosis. Ultrastructural morphometry revealed that oncotic cell death occurred predominantly during the early phase of culture whereas the more abundant apoptotic cell death occurred throughout the culture period. In conclusion, although both apoptotic and oncotic death occur in the natural course of adult rat cardiomyocytes in short-term culture, apoptosis is more predominant. Because of the high incidence of spontaneous cell death predominantly via apoptosis, this information is important for the interpretation of studies using this cell type in culture.","PeriodicalId":14544,"journal":{"name":"Japanese circulation journal","volume":"41 1","pages":"743-8"},"PeriodicalIF":0.0,"publicationDate":"2001-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81908073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Differential effects of hypoxia and hypercapnia on respiratory sinus arrhythmia in conscious dogs. 缺氧和高碳酸血症对清醒犬呼吸性窦性心律失常的不同影响。

Japanese circulation journal Pub Date : 2001-07-20 DOI: 10.1253/JCJ.65.738

F. Yasuma, M. Hirai, J. Hayano

引用次数: 23

Left ventricular epicardial outflow tract tachycardia: a new distinct subgroup of outflow tract tachycardia. 左心室心外膜流出道心动过速:一个新的独特的流出道心动过速亚群。

Japanese circulation journal Pub Date : 2001-07-20 DOI: 10.1253/JCJ.65.723

H. Tada, A. Nogami, S. Naito, H. Fukazawa, Y. Horie, Shoichi Kubota, Y. Okamoto, H. Hoshizaki, S. Oshima, K. Taniguchi

{"title":"Left ventricular epicardial outflow tract tachycardia: a new distinct subgroup of outflow tract tachycardia.","authors":"H. Tada, A. Nogami, S. Naito, H. Fukazawa, Y. Horie, Shoichi Kubota, Y. Okamoto, H. Hoshizaki, S. Oshima, K. Taniguchi","doi":"10.1253/JCJ.65.723","DOIUrl":"https://doi.org/10.1253/JCJ.65.723","url":null,"abstract":"The present study investigated the incidence and ECG characteristics of ventricular tachycardias (VTs) originating from the left ventricular (LV) epicardium. Thirty-one consecutive patients with VT or premature ventricular contraction originating from the outflow tract (OT-VT) underwent catheter ablation. Twenty-one OT-VTs were ablated from the endocardium in the right ventricular (RV) OT and 3 were ablated from the endocardium in the LVOT. In the remaining 7 patients, 4 (13%) OT-VTs were LV epicardial in origin, and 1 of these was ablated from the left sinus of Valsalva. The ECG characteristics of OT-VT of epicardial origin included prominent tall R-waves in the inferior leads, an R-wave in V1 and an S-wave in V2, precordial R-wave transition in V2-4, a deep QS-wave in aVL, and no S-wave in V6. In addition, there was an atypical left bundle branch block morphology with an inferior axis. These findings were observed during pacing from several sites in the LV epicardium. Furthermore, pacing from the left sinus of Valsalva caused a relatively tall R in V1, deep S-wave in V2 and a tall R-wave with a shallow S-wave in V3, as well as tall R-waves in the inferior leads, which represented intermediate characteristics between RV endocardial OT-VT and LV endocardial OT-VT. In conclusion, OT-VT originating from the LV epicardium is not uncommon and has characteristic ECG findings. Some of them can be ablated from the left sinus of Valsalva.","PeriodicalId":14544,"journal":{"name":"Japanese circulation journal","volume":"10 1","pages":"723-30"},"PeriodicalIF":0.0,"publicationDate":"2001-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82972732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 95

Left internal mammary-to-left circumflex coronary artery collateral pathway in a patient with occluded left circumflex artery. 左旋动脉闭塞患者的左内乳至左旋冠状动脉侧枝通路。

Japanese circulation journal Pub Date : 2001-07-20 DOI: 10.1253/JCJ.65.753

T. Yamamoto, Y. Kasagami, T. Ohba, K. Saeki, M. Kanemura, K. Munakata, T. Takano

引用次数: 3

Torsade de pointes with a normal QT interval associated with hypokalemia: a case report. 低钾血症伴QT间期正常的点扭转1例。

Japanese circulation journal Pub Date : 2001-07-20 DOI: 10.1253/JCJ.65.757

K. Kusano, Y. Hata, A. Yumoto, T. Emori, T. Sato, T. Ohe

引用次数: 21