Perineal tears and episiotomies are common after vaginal birth and may cause persistent pain, impaired wound healing, pain during sexual activity, and concerns about genital appearance.
Platelet-rich plasma (PRP) is prepared from a participant's own blood and contains a concentrated amount of platelets that release growth factors that may support tissue repair. The purpose of this study is to determine whether a single local injection of autologous non-activated PRP during the primary repair of a perineal tear and/or an episiotomy reduces postpartum perineal pain compared with an injection of 0.9% sodium chloride solution.
Participants will be randomly assigned in a 1:1 ratio to receive PRP or saline. Participants, the clinician administering the injection, the clinicians assessing the outcomes, and the statistician will be unaware of the assigned treatment. Follow-up will assess perineal pain, wound healing, scar quality, sexual function, genital self-image, and safety through 6 months postpartum.
The study hypothesis is that PRP will reduce average perineal pain at 3 months postpartum compared with saline.
Inclusion Criteria:
Exclusion Criteria:
oceane.pecheux@hug.ch+41 79 553 50 95
Participants, the clinician administering the study injection, the clinicians performing the postpartum outcome assessments, and the statistician/data analyst will be masked to treatment allocation.
A designated unmasked study team member will perform randomisation and prepare the assigned syringe. This person will not administer the intervention, conduct follow-up assessments, or participate in outcome analysis. The syringe will be covered to conceal the colour and appearance of its contents before being handed to the masked injecting clinician.
Participants will receive a single local perineal injection of 4-5 mL of 0.9% sodium chloride solution during primary repair of a second-degree or more severe perineal tear and/or episiotomy, after closure of the deeper layers and before skin closure.
Participants will receive a single local perineal injection of 4-5 mL of autologous non-activated platelet-rich plasma during primary repair of a second-degree or more severe perineal tear and/or episiotomy, after closure of the deeper layers and before skin closure.
ketty.hu@hug.ch
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