Influência das variáveis musculares na via de parto após preparação perineal em primíparas

Abstract

Vaginal delivery is recommended for low-risk pregnancies and physiotherapy techniques, such as perineal massage and instrument-assisted perineal stretching, are used in an attempt to prepare tissues for the passage of the fetus. Despite this, some deliveries may not occur as expected and conclude with interventions or surgical delivery. Studies have pointed out several predictive factors for the surgical completion of delivery such as advanced maternal age, body mass index, advanced gestational age and newborn weight. Despite this, no studies were found that analyzed the possible contribution of muscle variables as predictors for the delivery routes. Thus, the aim of this study was to analyze the influence of muscle variables on the mode of delivery of women undergoing perineal preparation. This is a secondary analysis of clinical trial in which primiparous women with a gestational age of 33 weeks were included. Evaluations were performed before and after eight intervention sessions using perineal massage and stretching assisted by the Epi-No Delphine Plus® instrument. Perineal extensibility muscle variables were evaluated using the Epi-No Delphine Plus® equipment and the peak and average strength of pelvic floor muscles (PFM) using the PeritronTM vaginal manometer. After delivery, the method of delivery performed was questioned by telephone contact. For statistical analysis, univariate logistic regression was performed with a significance level of 0.05. Sixty-one primiparous women were included in the study (mean age: 30 years; SD: 4.8). None of the muscle variables examined were predictors for vaginal delivery (p> 0.05). Muscle variables did not influence the final delivery route of women undergoing perineal preparation.