Primary maternal outcomes
• Duration of the second stage of labor;
• Frequency of episiotomy;
• Indication of episiotomy (imminent severe perineal rupture, instrumental delivery, shoulder dystocia, prolonged second stage of labor and non-reassuring fetal heart rate);
• Frequency of spontaneous lacerations;
• Frequency of instrumental delivery;
• Frequency of perineal trauma;
• Blood loss at delivery;
• Perineal need for suturing;
• Number of sutures;