Ghulam Hussain, Naseem Ahmad, Sohail Ahmad, Mirza Ahmad Raza Baig, Sara Zaheer.
AORTIC VALVE REPLACEMENT; Relation of aortic annulus measured by echocardiography and prosthesis size required.
Professional Med J Jan ;22(12):1565-8.

Precise determination of the size of aortic annulus is very important for the preoperative evaluation before aortic valve replacement. Objectives: To determine the preoperative prosthesis size using echocardiography in patients undergoing aortic valve replacement. Study Design: Prospective observational study. Setting: Ch. Pervaiz Elahi Institute of Cardiology (CPEIC) Multan. Period: January 2013 to October 2014. Methods: (100 patients) Aortic annulus sizes were measured with TTE one week before surgery and with the help of sizer per-operatively. The data was analyzed by using SPSS V16. Quantitative variables were analyzed using mean and standard deviation and percentages were used for qualitative variables. Dependent sample t test was used to see accuracy of TTE in measuring aortic annulus size. Results: Out of hundred patients, 84(84%) were male. Mean age of the patients was 33.77 +13.17 years. 51% patients underwent isolated Aortic valve replacement; redo-operations were done only in 4% patients. In 96% patient’s mechanical prosthesis was used and in 4% patient’s boiprosthesis was used for valve replacement. We found no significant difference in Aortic annulus measured pre-operatively with the TTE (23.54+ 3.54) and measured per-operative with the sizer (23.96+3.36) with highly insignificant p-value 0.58.Aortic annulus size was almost same measured by these two techniques. Conclusion: Aortic annulus size measured with TTE helps to arrange the optimum size prosthesis before aortic valve replacement surgery.

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