Document Detail

Guidewire bias in rotational atherectomy in the angled lesion: evaluation based on the thickness of the ablated intima and media.
MedLine Citation:
PMID:  12135134     Owner:  NLM     Status:  MEDLINE    
The effect of guidewire bias on angled-lesion ablation by rotational atherectomy (RA) was assessed by measuring the changes in vertical lumen diameter, horizontal lumen diameter and the intima-media thickness of the coronary artery, using intravascular ultrasound in 10 lesions with an angle greater than 10 degrees. The vertical and horizontal diameters significantly increased after RA. The intima-media thickness at the 4 orthogonal sites significantly decreased. There was a significant positive correlation between vertical diameter change and angle (r=0.642, p=0.045), but none between horizontal diameter change and angle. There was no correlation between intima-media thickness change at 0 degrees and angle; however, at 180 degrees there was a tendency to correlation with angle (r=0.602, p=0.066). These data suggest that in cases of angled lesions, the increase in vertical lumen diameter is caused more by ablation of the 180 degrees wall than by that of the 0 degrees wall, which is brought about by guidewire bias toward the vascular wall at 180 degrees.
Yoshihiko Oishi; Mitsunori Okamoto; Takashi Sueda; Masaki Hashimoto; Shinji Karakawa; Masayuki Kambe
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Publication Detail:
Type:  Evaluation Studies; Journal Article    
Journal Detail:
Title:  Circulation journal : official journal of the Japanese Circulation Society     Volume:  66     ISSN:  1346-9843     ISO Abbreviation:  Circ. J.     Publication Date:  2002 Jul 
Date Detail:
Created Date:  2002-07-23     Completed Date:  2003-06-03     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  101137683     Medline TA:  Circ J     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  659-64     Citation Subset:  IM    
Department of Cardiology, Hiroshima Prefectural Hiroshima Hospital, Japan.
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MeSH Terms
Angina Pectoris / therapy
Atherectomy, Coronary / adverse effects,  instrumentation*,  standards*
Bias (Epidemiology)
Catheter Ablation / adverse effects
Coronary Vessels / pathology,  ultrasonography
Tunica Intima / pathology,  ultrasonography
Tunica Media / pathology,  ultrasonography
Ultrasonography, Interventional

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