Prosthesis-Patient Mismatches in Aortic Valve Replacement a Study in Ibn Al-Bitar Hospital for Cardiac Surgery

Akram Faqe Mahmood, Darya

	Prosthesis-Patient Mismatches in Aortic Valve Replacement a Study in Ibn Al-Bitar Hospital for Cardiac Surgery
Iraqi Postgraduate Medical Journal
Article 1, Volume 9, Issue 4, 2010, Pages 484-492 PDF (0 K)
Author
Darya Akram Faqe Mahmood
Abstract
ABSTRACT: BACKGROUND: Use of new generation small prostheses for aortic valve replacement has decreased the need for annular enlargement and rarely increased the incidence of severe patient-prosthesis mismatch; OBJECTIVE: Of this study is to evaluate the impact of using this type of prosthesis (St.Jude. HP, Regent) on operative mortality. PATINETS & METHODS: We reviewed our experience (59) consecutive patients who had isolated and combined aortic valve replacement in our hospital between February 2001 and February 2007. RESULTS: The mean age was 36, and 60 % of patients were female.valvular disease was primarily pure aortic regurgitation 47%, combined aortic disease 29% and pure aortic stenosis was present in 24%. CONCLUSION: Evaluation of the impact of newly designed small prosthesis on thirty-day mortality revealed: thirty-day mortality was 8% and the strongest independent predictors in multivariate analysis in decreasing order of statistical power were functional class IV, patient-prosthesis mismatch, advanced age (65 year), very small valve size (labeled valve size 17-mm), isolated aortic valve replacement surgery without other concomitant procedure (P=0.022) and obese patients (body mass index >33 kg/ m²).
Keywords
small aortic root; aortic annular enlargement prosthesis; patient mismatch; small prosthetic valve

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