AORTIC VALVE REPLACEMENT

RELATION OF AORTIC ANNULUS MEASURED BY ECHOCARDIOGRAPHY AND PROSTHESIS SIZE REQUIRED

Abstract

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.