ABC | Volume 114, Nº1, January 2019

Original Article Otto et al. Aortic prosthesis mismatch in public health system Arq Bras Cardiol. 2020; 114(1):12-22 Table 3 – Type and number of implanted prosthesis Types of Prostheses Number No PPM Moderate PPM Severe PPM Labcor Biological 19 0 1 0 25 5 1 0 Carpentier Edwards 19 0 0 1 21 1 3 0 23 3 1 2 25 0 2 0 St Jude Biological 18 0 1 0 19 1 1 1 21 5 8 12 23 8 20 21 25 5 7 3 27 6 1 3 St. Jude Mechanical 19 2 1 1 21 0 3 1 23 2 2 1 25 1 2 1 27 1 0 1 Non-Specific Mechanical 18 0 0 1 19 0 0 1 23 0 1 1 25 2 0 0 27 0 1 0 28 0 1 0 Non-Specific Biological 19 0 1 0 21 0 3 2 23 6 2 1 25 1 0 1 27 0 1 1 Hancock Biological 23 0 0 2 25 0 0 1 27 0 0 1 Biocor Biological 23 1 0 0 Medtronic Mechanical 21 1 0 0 Descriptive Table of aortic prosthesis implanted in the present study. * No description of prosthesis type in files or surgery report. Conclusion Severe aortic PPM is frequent among patients operated in the Brazilian Public Health System. The independent preoperative determinants of severe PPM in this population were: larger BMI, male gender, smaller LVOT diameter, younger age and rheumatic etiology. We developed a mathematical model including these preoperative variables in order to predict the risk of severe PPM prior to surgery. This model may be useful to implement prospective preventive strategies in patients identified as being at risk for severe PPM. Small prosthesis in big patients should be avoided. Author contributions Conception and design of the research: Otto ME, Atik FA, Lima JGE, Pibarot P; Acquisition of data: Otto ME, Moreira MN, Ribeiro LCM, Mello BCR, Domingues ACPM, 16