ABC | Volume 113, Nº4, October 2019

Original Article Cruz et al. Surgical mitral valvuloplasty in paediatric patients Arq Bras Cardiol. 2019; 113(4):748-756 Table 4 – Comparison between clinical and echocardiographic variables in the postoperative period with clinical outcomes in 54 children and adolescents with rheumatic mitral insufficiency undergoing mitral valvuloplasty Variables Imediate postoperative period (up to 7 days) p value Late postoperative period (up to 60 days) p value Yes mean ± SD No mean ± SD Yes mean ± SD No mean ± SD Duration of VAD use (days) 3.0 (1.0–3.0) 1.0 (1.0–2.0) 0.009 ¶ 2.0 (1.0–3.0) 1.0 (1.0–2.0) 0.035 ¶ Ejection fraction (%) 54.7 ± 17.6 54.9 ± 10.6 0.982* 54.5 ± 15.8 55.0 ± 13.0 0.936* Dilation of left chambers n (%) n (%) n (%) n (%) No 02 (14.3) 04 (16.7) 0.846 ¥ 02 (16.7) 04 (15.4) 0.920 ¥ Yes 12 (85.7) 20 (83.3) 10 (83.3) 22 (84.6) Mitral stenosis Absent/discrete 12 (85.7) 24 (100.0) 0.057 ¥ 10 (83.3) 26 (100.0) 0.094 ¥ Moderate/significant 02 (14.3) 00 (00.0) 02 (16.7) 00 (00.0) Aortic insufficiency Absent/discrete 10 (71.4) 20 (83.3) 0.385 ¥ 09 (75.0) 21 (80.8) 0.685 ¥ Moderate/significant 04 (28.6) 04 (16.7) 03 (25.0) 05 (19.2) Aortic stenosis Absent/discrete 14 (100.0) 24 (100.0) --- 12 (100.0) 26 (100.0) --- Mitral insufficiency Absent/discrete 09 (64.3) 23 (95.8) 0.010 ¥ 08 (66.7) 24 (92.3) 0.044 ¥ Moderate/significant 05 (35.7) 01 (4.2) 04 (33.3) 02 (7.7) Tricuspid insufficiency Absent/discrete 09 (64.3) 22 (91.7) 0.036 ¥ 07 (58.3) 24 (92.3) 0.012 ¥ Moderate/significant 05 (35.7) 02 (8.3) 05 (41.7) 02 (7.7) Pulmonary hypertension No 09 (64.3) 22 (91.7) 0.036 ¥ 07 (58.3) 24 (92.3) 0.012 ¥ Yes 05 (35.7) 02 (8.3) 05 (41.7) 02 (7.7) n: number of participants; SD: standard deviation; IQ: interquartile range; VAD: vasoactive drugs; *independent Student’s t test; ¶ Mann-Whitney’s test; ¥ χ 2 test or Fisher’s exact test. Table 5 – Predictive variables for immediate and late outcomes in 54 children and adolescents with rheumatic mitral insufficiency undergoing mitral valvuloplasty Variables Input Model Final Model OR (95%CI) p value OR (95%CI) p value Immediate outcome Sex 3.6 (0.8–15.0) 0.084 - - Duration of VAD use (days) 2.4 (1.2–4.9) 0.014 2.5 (1.3–4.9) 0.007 Late outcome Days of VAD 1.8 (0.9–3.7) 0.95 - - Number of reoperations 1.8 (0.1–31.7) 0.683 - - Duration of ECC (min) 1.0 (0.9–1.1) 0.538 1.0 (1.0–1.1) 0.051 Duration of anoxia (min) 1.0 (0.9–1.1) 0.958 - - Extubation (hour) 5.2 (0.4–67.3) 0.211 - - OR: Odds Ratio; 95%CI: 95% confidence interval; logistic regression. 753