IRCT2012111211422N1 IRCT 2013-03-16 Vice chancellor for research، Shiraz University of Medical Sciences Warm compress on the injury severity of perinea pain in labor Influence of warm compress bi-stage intervention on prevention of perineal trauma and second stage pain intensity and duration the first stage and second stage in primiparous with delayed valsalva maneuver referred to selected hospital of Shiraz university of medical science 91 2012-08-10 anticipated 150 Complete https://irct.ir/trial/11693 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention. N/A Childbirth. Intervention 1: control:Routine care. Intervention 2: I ntervention group: when the cervix was dilated 7 cm from the warm compress and we usewhen Full cervical dilatation was opened in thes spine Askyal head fetal intervention was to use hot compresses on the perineum is used for 15-20 minutes and the Valsalva maneuver may delay.