Factors associated with perineal pain on the first postnatal day after vaginal delivery: a cross-sectional study of primiparous women.

Many women report postpartum perineal pain due to perineal trauma after vaginal delivery. Perineal pain after giving birth declines over time; however, perineal trauma and pain negatively impact on the women's quality of life and their ability to care for their children. The degree of perineal trauma and instrument delivery with episiotomy are associated with perineal pain. Nevertheless, no studies have examined factors related to postpartum perineal pain, including weight changes during pregnancy as well as the course of delivery so far. We aimed to elucidate obstetric factors associated with perineal pain after vaginal delivery on the first postnatal day in Japanese primiparous women. A cross-sectional study conducted in five maternity hospitals in Japan included 142 primiparous women who vaginally delivered full-term and singleton infants. Perineal pain on the first postnatal day was evaluated using a visual analog scale. The final analysis included 92 participants with a mean age of 30.3 ± 4.6 years. The median visual analog scale score was 54.0 mm. Multiple linear regression analysis demonstrated that gestational weight gain above the recommended Japanese range was positively and significantly associated with perineal pain on the first postnatal day, independent of maternal age, episiotomy, painkiller use, and neonatal birth weight. This finding may provide additional evidence regarding gestational weight gain within the recommended range based on the pre-pregnancy body mass index to reduce perineal pain on the first postnatal day.

Modification of the association between nausea and vomiting of pregnancy and anxiety by personality trait during early pregnancy: A longitudinal study of Japanese pregnant women.

AIM: This study aimed to elucidate whether personality traits modify the relationship between nausea and vomiting of pregnancy (NVP) and anxiety, stratified by three pregnancy periods: 5-8 weeks, 9-12 weeks, and 13-20 weeks. METHODS: This longitudinal study was conducted from August 2018 to February 2019 at a perinatal outpatient unit in a general hospital. We included 153 pregnant women aged ≥20 years and under 20 weeks of gestation at their first prenatal visit. They completed the Index of Nausea, Vomiting, and Retching, and the State-Trait Anxiety Inventory (STAI) to measure anxiety in terms of both trait (STAI-T) and state anxiety (STAI-S), and retook them at follow-up checkups for a maximum of three times. RESULTS: Using longitudinal data until 20 weeks' gestation, changes in NVP and trait anxiety were significantly associated with changes in state anxiety independently, with trait anxiety being more strongly involved than the change in NVP. This tendency was pronounced in the high-trait anxiety group with STAI-T scores of ≥45. Cross-sectional analyses by gestational week showed similar results in the low-trait anxiety group (STAI-T < 45). In the high-trait anxiety group, only trait anxiety was significantly associated with state anxiety up to 12 weeks gestation. However, only NVP was significantly associated with state anxiety after 13 weeks. CONCLUSIONS: Pregnant women who tend to be anxious temperamentally may have other factors that cause anxiety besides nausea immediately after the discovery of pregnancy. Understanding personality traits may help reduce anxiety in pregnant women.