Impact of looping on premalignant polyp detection during colonoscopy.

Background: The presence of premalignant polyps on colonoscopy is an indicator of metachronous colorectal cancer. Looping during colonoscopy is associated with old age, female sex, and colonoscopy insertion time. However, the clinical significance of looping is not fully understood.

Feasibility of a mobile cardiotocogram device for fetal heart rate self-monitoring in low-risk singleton pregnant women.

Aim: This study aimed to clarify the feasibility of a mobile cardiotocogram (CTG) device for self-monitoring fetal heart rate (FHR) in low-risk singleton pregnant women.

Methods: This study was conducted at six university hospitals and seven maternity clinics in Japan. Using a mobile cardiotocogram device (iCTG, Melody International Ltd.

Clinical characteristics of pregnant women with COVID-19 in Japan: a nationwide questionnaire survey.

Background: Few reports have presented an overall view of pregnant women with coronavirus disease 2019 (COVID-19) across an entire country and throughout the entire gestation period. Furthermore, no such reports are available for Japan. We examined the clinical characteristics and outcomes of pregnant women with COVID‑19 on a national scale in Japan.

eradication improved the Kyoto classification score on endoscopy.

Background And Aim: Endoscopy-based Kyoto classification predicts the risk of infection and gastric cancer; however, the change in score following eradication remains unknown. We retrospectively compared the Kyoto score before and after eradication.

Methods: positive patients who underwent baseline esophagogastroduodenoscopy (EGD), successful eradication, and surveillance EGD were enrolled.

Declined use of cervical ripening balloon did not reduce the incidence of umbilical cord prolapse in Japan.

Aim: To clarify whether the incidence of umbilical cord prolapse (UCP) at delivery is related to the cervical ripening balloon (CRB).

Methods: A postal questionnaire study was conducted in 2018 in institutions providing maternity services across Japan. Questions on the number of deliveries, labor inductions, used CRB and cases of UCP in 2017 were included.

Decline number of uterine fundal pressure maneuver in Japan recent 5 years.

Aim: To clarify whether the incidence of uterine fundal pressure (UFP) maneuver at delivery and consequent uterine rupture were declined.

Methods: Population-based postal questionnaire study was conducted. A questionnaire was sent to obstetric institutions across Japan.

Obstetric risk factors for umbilical cord prolapse: a nationwide population-based study in Japan.

Objectives: To demonstrate the clinical course and the obstetric risk factors for umbilical cord prolapse.

Methods: The clinical course of reported cases of umbilical cord prolapse that occurred in Japan between 2007 and 2011 was retrospectively analyzed. The obstetric risk factors for umbilical cord prolapse were investigated by a nationwide population-based case-cohort study.

Clinical risk factors for poor neonatal outcomes in umbilical cord prolapse.

Objectives: To clarify the clinical risk factors associated with poor neonatal outcomes due to umbilical cord prolapse (UCP).

Methods: A postal questionnaire survey was attempted in Japan. The clinical risk factors and managements associated with poor neonatal outcomes were analyzed in cases of UCP treated in Japan.

The use of balloons for uterine cervical ripening is associated with an increased risk of umbilical cord prolapse: population based questionnaire survey in Japan.

Background: To clarify whether the use of balloons for cervical ripening is associated with the incidence of umbilical cord prolapse.

Methods: A postal questionnaire survey was distributed in Japan. Cases of umbilical cord prolapse occurring during labor in association with the use of balloons for cervical ripening between 2007 and 2011 in Japan were analyzed.