| Diastolic retrograde arterial flow: Preliminary report. | |
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MedLine Citation:
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PMID: 21641007 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVE: Holodiastolic arterial blood flow is associated with pathological conditions. Nevertheless, we have observed that lifting the arm at an angle greater than the horizontal causes holodiastolic arterial blood flow in the brachial artery in normal patients. Thus, we decided to assess the frequency and characteristics of this phenomenon. METHOD: Ten volunteers (7 women) aged 43±17 years participated in the study. We used an ultrasound scanner with a 12MHz probe to analyze the brachial artery. The examination included: a) Baseline measurements in the supine position; b) measurements during three minutes with the arm raised, and c) a measurement sixty seconds after lowering the arm to the supine position in which the baseline measurements had been obtained. RESULTS: We observed mid- and end-diastolic retrograde flow in 8/10 patients when their arms were raised. No mid- or end-diastolic retrograde flow was observed in the baseline measurements or after the arm was lowered to the supine position (p=0.0007). The minimum diastolic velocity was significantly higher in the measurements obtained with the arm raised than in the supine position before or after arm raising (-13.5±4.9cm/s vs. -2.38±7.5cm/s, p<0.05 and -13.5±4.9cm/s vs. -4.6±5.2cm/s, p<0.05, respectively). The modified resistance index was significantly higher when the arm was raised (1.20±0.07 vs. 1.04±0.15; p<0.05); moreover, the modified resistance index was significantly lower in the measurements obtained after the arm was lowered than in the baseline measurements (1.20±0.07 vs 1.07±0.08; p<0.05). CONCLUSION: We conclude that holodiastolic reflux occurs in healthy patients. This physiological phenomenon merits further investigation and can help elucidate previous observations in different pathological conditions. |
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Authors:
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M J Mc Loughlin; S Mc Loughlin; J Milei |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-6-2 |
Journal Detail:
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Title: Radiologia Volume: - ISSN: 0033-8338 ISO Abbreviation: - Publication Date: 2011 Jun |
Date Detail:
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Created Date: 2011-6-6 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0120775 Medline TA: Radiologia Country: - |
Other Details:
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Languages: ENG; SPA Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2010 SERAM. Published by Elsevier Espana. All rights reserved. |
Affiliation:
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Instituto de Investigaciones Cardiológicas Alberto C. Taquini (ININCA) UBA-CONICET, Buenos Aires, Argentina. |
Vernacular Title:
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Flujo retrógrado diastólico. Comunicación preliminar. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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