Optimal gestational weight gain for underweight pregnant women in Japan.

We aimed to investigate the optimal range of gestational weight gain (GWG) for Japanese underweight (body mass index <18.5 kg/m) women using the Japanese Birth Registry System. The study subjects included underweight women who were divided into groups according to the GWG recommendations of the Ministry of Health, Labour and Welfare (MHLW) (9-12 kg): <9.

Prenatal diagnosis of vasa previa and the course of the cord vessels contribute to the safety of cesarean sections: A case report.

Vasa previa can occur even in cases without placental malposition and the precise diagnosis of vasa previa, and the course of the cord vessels contributes to a safe delivery. The color Doppler is a useful and easy-to-use device to confirm the presence of vasa previa.