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OBJECTIVE To compare the intensity of pain, the healing process and women’s satisfaction with the repair of perineal trauma during vaginal delivery using surgical glue or suture. METHOD Cross-sectional study aligned with a clinical trial conducted at a maternity in Itapecerica da Serra, São Paulo. The sample consisted of women who were evaluated between 10 and 20 days after delivery. The outcomes were analyzed according to the distribution of women in the experimental group (EG: perineal repair with Glubran-2® surgical glue; n=55) and in the control group (CG: perineal repair with Vicryl® suture thread; n=55). RESULTS 110 puerperal women were evaluated. There was no difference between EG and CG regarding sociodemographic and clinical-obstetric characteristics. The intensity of perineal pain, assessed by the visual numeric scale was lower among women in the EG compared to the CG (p<0.001). According to the REEDA scale, there was no significant difference in perineal healing (p=0.267) between EG and CG. The satisfaction of women with perineal repair, assessed using a five-point scale, was higher with the use of surgical glue (p=0.035). CONCLUSION Surgical glue showed advantages in relation to perineal pain and greater satisfaction for women compared to the use of suture. The healing process was similar for both types of repair.

The sound radiation from a rotary screw compressor was simulated using structural finite element and acoustic boundary element analysis. The modes of the housing were measured with and without the screws. Finite element modal analysis results were compared to the experimental modes with good agreement. Results demonstrated that the screws affected the bending modes but not the more important cylinder modes of the compressor housing. The sound radiation from the compressor housing was then predicted using acoustic boundary element analysis. The results indicated that the second and fourth pumping frequencies were close to two structural modes. Subsequent simulations investigated the effect of design changes on the housing. These changes included using a thicker cylinder and adding ribs.