Comparação da viabilidade do retalho areolopapilar com pedículo medial em mamoplastia redutora empregando-se a morfometria mamária para composição de grupos

Abstract

PROPOSE: Formulates model to build groups of breast hypertrophy performed through two breast morphometric variables combination: ascendant transposition mesure of areolomamilar complex (AReAP) and length mesure of medial dermaglandular flaps (CReAP). The groups compare body mass index (BMI) and areolomamilar complex (ReAP) viability between groups. And define which variable, AReAP or CReAP is the best index for viability in medial dermalglandular flap. METHODS: In this prospective study 86 breast were operated by medial dermaglandular flap technique (Skoog). The patients were submitted to lab and clinical exams; and then oriented to surgery. The BMI, AReAP and CReAP were defined in immediate preoperative time. The sample was distributed in two groups in agreement with statistic strategy that was performed by histogram, scatter plot, cluster analysis, complete linkage by combination of AReAP and CReAP. The estatistic tests were Kolmogorov-Smirnov, Student t test and Fisher's exact test. The multiple logistic regression and univaried statistical analysis correlated parameters. The Minitab statistic software was used in analyses. The cut-off point for statistical significance was 0.05 or defined by the test. RESULTS: Seventy five breast was selected by strategy. The group I had 53 breast, the CReAP range was 4,00 to 7.50cm, AReAP range was 7.00 to 12.00 cm and BMI average was 24.96. The group II had 22 breast, the CReAP range was 8.00 to 15.00cm, AReAP range was 12.00 a 20.50 cm and BMI average was 26.16 (p= 0.049). The group II presented more REAP viability alterations than group I (p=0,024). Both variables showed correlation with ReAP viabilty, though AReAP presented the greatestcorrelation (p= 0.039) compared with CReAP (p=0.053, p>0.05).CONCLUSIONS: The formation groups by morphometry were adequated, they presented clinical and antropometric correlations defined by ReAP viability and BMI diferenciations. In the group II, the biggest BMI, the ReAP suffered more viability alterations than group I. The AReAP mesure was the best index to ReAP viability in medial dermoglandular flap.