心率对主动脉反流血流测量的影响。

Q3 Medicine

Journal of Heart Valve Disease Pub Date : 2017-09-01

Mats Lidén, Maciej Wodecki, Per Thunberg, Peter Rask

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引用次数: 0

摘要

背景:使用心脏磁共振成像(CMRI)进行血流测量可以量化主动脉瓣反流(AR)患者的脑卒中体积、反流体积(RV)和反流分数(RF)。这些变量用于评估瓣膜疾病的严重程度和手术时机。本研究的目的是探讨心率增加对AR患者RV和RF测量的影响。方法:在13例已知的中度或重度AR患者中，使用相对比电影磁共振成像在升主动脉进行反流测量。静息时和静脉注射阿托品后心率增加时进行血流测量。结果:静息时平均心率为61次/分，给药后平均心率为91次/分。静息时RV和RF分别为52 ml和35%，34 ml (p)结论:心率增加导致RV降低。RF更稳定，因此可能更适合用于AR的严重程度分级。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

本刊更多论文

Impact of Heart Rate on Flow Measurements in Aortic Regurgitation.

Background: Flow measurements using cardiac magnetic resonance imaging (CMRI) enable quantification of the stroke volume, regurgitant volume (RV) and regurgitant fraction (RF) in patients with aortic regurgitation (AR). These variables are used to assess the severity of the valve disease and for the timing of surgery. The aim of the study was to investigate the impact of an increased heart rate on measurement of the RV and RF in patients with AR.

Methods: Among 13 patients with known moderate or severe AR, regurgitant flow measurements, using phase-contrast cine magnetic resonance imaging, were obtained in the ascending aorta. Flow measurements were obtained at rest and at increased heart rates after intravenous administration of atropine.

Results: The mean heart rate was 61 beats per min at rest and 91 beats per min after atropine administration. The RV and RF were 52 ml and 35% at rest, respectively, and 34 ml (p <0.001) and 30% (p = 0.065) at increased heart rate, respectively.

Conclusions: An increased heart rate leads to a decreased RV. The RF is more stable and may therefore be preferable for severity grading in AR.

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来源期刊

Journal of Heart Valve Disease 医学-心血管系统

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The Journal of Heart Valve Disease (ISSN 0966-8519) is the official journal of The Society for Heart Valve Disease. It is indexed/abstracted by Index Medicus, Medline, Medlar, PubMed, Science Citation Index, Scisearch, Research Alert, Biomedical Products, Current Contents/Clinical Medicine. It is issued bi-monthly in one indexed volume by ICR Publishers Ltd., Crispin House, 12A South Approach, Moor Park, Northwood HA6 2ET, United Kingdom. This paper meets the requirements of ANSI standard Z39.48-1992 (Permanence of Paper).