| Assessment of left-to-right atrial shunting after percutaneous mitral valvuloplasty by transesophageal color Doppler flow-mapping. | |
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MedLine Citation:
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PMID: 2598418 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To evaluate left-to-right shunts after percutaneous balloon mitral valvuloplasty, we studied 15 consecutive patients by using transesophageal color Doppler flow-imaging system. Transesophageal color Doppler examinations were performed five times in each patient (before valvuloplasty and 1 day, 1 week, 1 month, and 6 months after valvuloplasty). No shunt flow was observed before valvuloplasty. On 1 day after mitral valvuloplasty, transesophageal color Doppler echocardiography demonstrated left-to-right shunts in 13 (87%) of 15 patients. However, a significant oxygen step-up was present in the right heart in only one patient. The mean diameter of the interatrial septal defect detected by transesophageal two-dimensional echocardiography was 1.8 +/- 1.0 mm. The mean velocity of left-to-right shunting flow measured by high-pulse repetition frequency Doppler technique was 0.83 +/- 0.38 m/sec. One week after the procedure, left-to-right shunt flow was detected in 11 (73%) patients. One month after valvuloplasty, left-to-right shunting flow was detected in seven (47%) of 15 patients. There was a significant decrease in the diameter of an interatrial septal defect between 1 day and 1 week (p less than 0.01), between 1 week and 1 month (p less than 0.01), and between 1 month and 6 months (p less than 0.05). Six months after valvuloplasty, left-to-right shunting flow remained in three (20%) patients. By using transthoracic color Doppler echocardiography, we detected left-to-right shunting flow in two patients on 1 day after the procedure.(ABSTRACT TRUNCATED AT 250 WORDS) |
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Authors:
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K Yoshida; J Yoshikawa; T Akasaka; Y Yamaura; M Shakudo; T Hozumi; T Fukaya |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Circulation Volume: 80 ISSN: 0009-7322 ISO Abbreviation: Circulation Publication Date: 1989 Dec |
Date Detail:
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Created Date: 1990-02-01 Completed Date: 1990-02-01 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0147763 Medline TA: Circulation Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1521-6 Citation Subset: AIM; IM |
Affiliation:
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Department of Cardiology, Kobe General Hospital, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Balloon Dilatation* Blood Flow Velocity / physiology Coronary Circulation / physiology Echocardiography, Doppler* Female Humans Male Middle Aged Mitral Valve Stenosis / physiopathology, therapy* Oximetry Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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