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Echocardiographic p...
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Ding, Wen-hongUmeå universitet,Medicin
(författare)
Echocardiographic predictors of left ventricular functional recovery following valve replacement surgery for severe aortic stenosis.
- Artikel/kapitelEngelska2008
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Elsevier BV,2008
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LIBRIS-ID:oai:DiVA.org:umu-82723
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-82723URI
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https://doi.org/10.1016/j.ijcard.2007.05.025DOI
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Språk:engelska
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Sammanfattning på:engelska
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OBJECTIVE: We aimed to identify the most sensitive echocardiographic measurements that predict recovery of left ventricular function following valve replacement surgery in patients with severe aortic stenosis (AS) and LV dysfunction.METHODS: We studied 66 patients (mean age 70+/-2 years, 53 male) who underwent AVR for severe AS with concurrent LV dysfunction between 1998 and 2003 at the Royal Brompton Hospital. Clinical symptoms, co-morbidities and echocardiographic measurements of LV function were recorded before and at a median follow-up of 46 months after AVR. Pre-operative LV systolic dysfunction was defined as LV ejection fraction (EF) <50% and the post-op LV recovery as an increase of EF >10%.RESULTS: Following AVR peak aortic pressure gradient decreased and aortic valve area index increased (64+/-3 to 19+/-1 mm Hg and 0.30+/-0.01 to 0.89+/-0.03 cm(2)/m(2), p<0.001 for both). LV EF increased (from 45+/-1 to 54+/-2%; p<0.001) and the LV dimensions fell (LVEDD index: from 33+/-1 to 30+/-1 mm/m(2); and LVESD index: from 27+/-1 to 20+/-1 mm/m(2); p<0.01 for both). LV diastolic dysfunction improved as evidenced by the fall in E/A ratio (from 2.6+/-0.2 to 1.9+/-0.4) and prolongation of total filling time; (from 29.2+/-0.6 to 31.4+/-0.5 s/min, p=0.01 for both). Among all echocardiographic variables, LV dimensions (LVEDD index, OR 0.70, CI 0.52-0.97, p<0.05; LVESD index, OR 0.57, CI 0.40-0.85, p=0.005) were the two independent predictors of post-operative LV functional recovery on multivariate analysis. A cut off value of pre-operative LVESD index=or<27.5 mm/m(2) was 85% sensitive and 72% specific in predicting intermediate-term recovery of LV function after AVR (AUC, 0.72, p=0.002).CONCLUSION: LV functional recovery was evident in majority of aortic stenotic patients with LV dysfunction after aortic valve replacement. A lower prevalence of LV functional recovery in patients with large pre-operative LV end systolic dimension index might signify the loss of contractile reserve and thus predict post-operative functional recovery.
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Lam, Yat-yin
(författare)
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Kaya, Mehmet G
(författare)
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Li, Wei
(författare)
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Chung, Robin
(författare)
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Pepper, John R
(författare)
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Henein, Michael YUmeå universitet,Medicin(Swepub:umu)mihe0015
(författare)
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Umeå universitetMedicin
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:International Journal of Cardiology: Elsevier BV128:2, s. 178-840167-52731874-1754
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