Sökning: WFRF:(Thunberg Per 1968 ) >
Impact of Heart Rat...
Impact of Heart Rate on Flow Measurements in Aortic Regurgitation
-
- Lidén, Mats, 1976- (författare)
- Örebro universitet,Institutionen för medicinska vetenskaper
-
- Wodecki, Maciej (författare)
- Department of Clinical Physiology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
-
- Thunberg, Per, 1968- (författare)
- Örebro universitet,Institutionen för medicinska vetenskaper,Department of Medical Physics
-
visa fler...
-
- Rask, Peter, 1957- (författare)
- Örebro universitet,Institutionen för medicinska vetenskaper,Region Örebro län
-
visa färre...
-
(creator_code:org_t)
- I C R Publishers Ltd. 2017
- 2017
- Engelska.
-
Ingår i: Journal of Heart Valve Disease. - : I C R Publishers Ltd.. - 0966-8519 .- 2053-2644. ; 26:5, s. 502-508
- Relaterad länk:
-
https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kardiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cardiac and Cardiovascular Systems (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas