Dear Colleagues,

Greeting from The Japanese Society of Study of Hypertension in Pregnancy (JSSHP)!

It is our great pleasure and privilege to invite you to the JSSHP Congress 2024, which theme is “From the prevention of HDP to long-term follow-up: with the aim of achieving perinatal medicine cooperating with health care provider”. The congress will be held from 21^st to 22^nd of September 2024 at the Light Cube Utsunomiya, that is next to JR Utsunomiya station. This congress aims to discuss and deliberate recent research related to HDP. In addition, we will plan “Health Care Provider Authorization Training Course” as well as “A lecture open to the Public”. If circumstances permit, we will entertain you with a small dinner and entertainment.

We welcome all of you to Tochigi for the JSSHP Congress 2024.

Warm Regards,

Dr. Akihide Ohkuchi

Congress Chair

JSSHP Congress 2024

Dr. Atsuhiro Ichihara

President

JSSHP

Aim: Among the most serious complications of placenta previa is bleeding during cesarean delivery. We developed a method of predicting bleeding risk using predelivery MRI or ultrasonography and discuss our findings.

Methods: We conducted a retrospective cohort study of cesarean deliveries involving placenta previa between January 2014 and March 2020. We assessed ultrasonography and MRI measurements of the distance from the short side of the placental edge to the internal cervical os (PI) and assessed MRI measurements of placental height (PH). We then analyzed the relation between blood loss and each of these measurements.

Results: Of 57 qualifying deliveries, total previa was present in 38 patients (66.7%), and marginal or partial previa in 19 (33.3%). Median blood loss was 1,510 ml (interquartile range, 1,170–2,000 ml). PI distance was positively correlated with blood loss; measurements at 30 to 32 gestational weeks were more correlated than at 35 to 37 gestational weeks by ultrasonography. Moreover, MRI measurements at 33 to 34 gestational weeks were much more correlated than ultrasonography. There was also a positive correlation for PH.

Conclusion: Measurements of PI and PH, particularly measured by MRI at 33 to 34 gestational weeks, are useful predictors of bleeding risk for patients with placenta previa.

A 47-year-old nulliparous woman with no significant medical history underwent a preimplantation genetic diagnosis and received a transfer of an embryo after egg donation.

At 16+1 weeks of gestation, she developed preeclampsia with hypertension and proteinuria, which gradually worsened with symptoms like hemolysis, elevated liver enzyme levels, and fetal growth restriction without anomaly. No underlying autoimmune diseases and secondary hypertension symptoms were detected. The patient underwent an emergency cesarean section at 22+3 weeks of gestation following intrauterine fetal death and a severe maternal condition. The maternal condition improved significantly post-delivery, with placental pathology revealing no molar changes. Pure preeclampsia, characterized by the absence of underlying maternal disease, fetal chromosomal abnormalities, or molar pregnancy before 20 weeks of gestation, is extremely rare. Here, we report a case of pure preeclampsia occurring at 16 weeks of gestation with an increasing trend of soluble fms-like tyrosine kinase 1/placental growth factor ratio and provide a review of relevant literature.