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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1016/j.jsha.2015.03.001
|2 doi
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|a pubmed24n0848.xml
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|a (NLM)26557742
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Omar, Alaa Mabrouk Salem
|e verfasserin
|4 aut
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|a Radius of proximal isovelocity surface area in the assessment of rheumatic mitral stenosis
|b Connecting flow to anatomy and hemodynamics
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 11.11.2015
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a BACKGROUND: Echocardiographic assessment of left atrial pressure (LAP) in mitral stenosis (MS) is controversial. We sought to examine the role of the radius of the proximal isovelocity surface area (PISA-r) in the assessment of the hemodynamic status of MS after fixing the aliasing velocity (Val)
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|a METHODS AND RESULTS: We studied 42 candidates of balloon mitral valvuloplasty (BMV), for whom pre-BMV echocardiography was done and LAP invasively measured before dilatation. PISA-r was calculated after fixing aliasing velocity to 33 cm/s. In addition, the ratio IVRT/Te'-E was also measured, where IVRT was isovolumic relaxation time, and Te'-E was the time difference between the onset of mitral flow E-wave and mitral annular early diastolic velocity. IVRT/Te'-E and PISA-r showed a strong correlation with LAP (r = -0.715 and -0.637, all p < 0.001) and with right-sided pressures. In addition, PISA-r correlated with mitral valve area by planimetry method (MVA) and with left ventricular outflow tract stroke volume (r = 0.66 and 0.71, all p < 0.001). Receiver operator characteristic curve (ROC-curve) showed that PISA-r was not inferior to IVRT/Te'-E in differentiating LAP ⩾25 from <25 mmHg
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|a CONCLUSION: Provided that Val is set to a constant of 33 cm/s, PISA-r can assess the hemodynamic status of MS, and seems a simple alternative to the tedious IVRT/Te'-E for estimation of LAP
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|a Journal Article
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|a Left atrial pressure
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|a Mitral stenosis
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|a Mitral valve area
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|a Proximal isovelocity surface area
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|a Abdel-Rahman, Mohamed Ahmed
|e verfasserin
|4 aut
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|a Raslan, Hala
|e verfasserin
|4 aut
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|a Rifaie, Osama
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of the Saudi Heart Association
|d 1999
|g 27(2015), 4 vom: 02. Okt., Seite 244-55
|w (DE-627)NLM098225227
|x 1016-7315
|7 nnns
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| 773 |
1 |
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|g volume:27
|g year:2015
|g number:4
|g day:02
|g month:10
|g pages:244-55
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|u http://dx.doi.org/10.1016/j.jsha.2015.03.001
|3 Volltext
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