Levator Ani Muscle Avulsion at First Birth of Mexican Women: Randomized Control Trial

Levator Ani Muscle (LAM) avulsion occurs in 13-36% of women having their first birth. These damages by palpation and ultrasound of the pelvic floor can be detected. Avulsion of the LAM results in decreased muscle strength of the pelvic floor, enlarge the genital hiatus and promotes pelvic organ prolapse. The perineal muscle training is a proposal to combine the perineal massage with pelvic floor exercises in order to prepare the LAM in the last weeks before delivery, to withstand stretching which will be submitted during childbirth. No studies in the world that have explored the effect of the perineal muscle training on the avulsion of MEA. Objective: To quantify the proportion of primiparous that result with avulsion of LAM after their first birth among those performing perineal muscle training from week 33 of gestation and those with usual prenatal care.