caa a22 4500 47711296X CHVBK 20180405111615.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF01746207 doi (NATIONALLICENCE)springer-10.1007/BF01746207 Intravascular ultrasound evidence of angiographically undetected left main coronary artery disease and associated trauma during interventional procedures [Elektronische Daten] [Masakazu Yamagishi, Yoichiro Hongo, Yoichi Goto, Tetsuhiro Umeno, Hiroshi Tsutsui, Toshihiko Asanuma, Kunio Miyatake] Summary: To determine the clinical significance of angiographically undetected left main coronary artery (LMCA) disease, we analyzed data from 47 patients, with a mean age of 58 years, who were examined with intravascular ultrasound (3.5Fr, 30MHz). For assessment of atherosclerosis, the lesion area was calculated from the ultrasound images by the formula, {(total vessel area — lumen area)/total vessel area} × 100(%). In 37 LMCA segments of patients with significant distal coronary stenosis (>50%), the percent intima-media area (the index) was 39 ± 11% (mean ± SD), significantly greater than that of 10 patients without distal disease (27 ± 4%,P < 0.01). Among those with significant coronary stenosis, the index was markedly greater in patients with multi-vessel coronary stenosis (46 ± 12%,n = 19) than in patients with single-vessel disease (33 ± 9%,n = 18;P < 0.01). At three LMCA sites associated with multi-vessel disease, ultrasound analysis demonstrated disruption of the intima at the site where the guiding catheter for balloon angioplasty had been positioned. These results indicate that LMCA disease is more prominent in patients with multi-vessel distal coronary disease than in those with single vessel disease, even in the absence of angiographic stenosis. We suggest that LMCA trauma can occur where the guiding catheter for angioplasty is positioned, particularly in patients with multi-vessel distal disease. Springer-Verlag, 1996 Left main coronary artery nationallicence Intravascular ultrasound nationallicence Atherosclerosis nationallicence Transluminal angioplasty nationallicence Yamagishi Masakazu Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut Hongo Yoichiro Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut Goto Yoichi Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut Umeno Tetsuhiro Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut Tsutsui Hiroshi Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut Asanuma Toshihiko Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut Miyatake Kunio Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut Heart and Vessels Springer-Verlag 11/5(1996-09-01), 262-268 0910-8327 11:5<262 1996 11 380 https://doi.org/10.1007/BF01746207 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01746207 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yamagishi Masakazu Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Hongo Yoichiro Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Goto Yoichi Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Umeno Tetsuhiro Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Tsutsui Hiroshi Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Asanuma Toshihiko Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Miyatake Kunio Cardiology Division of Medicine, National Cardiovascular Center, 5-7-1 Fujishiro-dai, 565, Suita, Osaka, Japan aut NATIONALLICENCE 773 0- Heart and Vessels Springer-Verlag 11/5(1996-09-01), 262-268 0910-8327 11:5<262 1996 11 380 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer