Seasonal variation in home blood pressure during pregnancy and frequency of hypertensive disorders of pregnancy: a multicenter prospective study of home blood pressure measurements in pregnant women using information technology.

This multicenter prospective study investigated seasonal variation in home blood pressure (HBP) during pregnancy and its association with the frequency of hypertensive disorders of pregnancy (HDP) and developed trimester-specific upper limits of HBP according to season. Low-risk women with singleton pregnancies were recruited at six university hospitals and three maternity clinics. HBP was measured by a sphygmomanometer twice daily and recorded online using a mobile application.

Infection route associated with invasive group A streptococcal toxic shock syndrome in maternal deaths: Nationwide analysis of maternal mortalities in Japan.

Objectives: To clarify the infection route in maternal death due to invasive group A streptococcal (GAS) infection and toxic shock syndrome (TSS).

Methods: A retrospective study was conducted on maternal deaths due to GAS-TSS in Japan between January 2010 and March 2024. The final causal diagnosis of maternal death and the infection routes of GAS were analysed using medical records, laboratory data and autopsy findings.

Activities of the Japan Council for Implementation of the Maternal Emergency Life Support System reduced direct causes of maternal deaths in Japan.

Here, we aimed to provide an overview of Japan Council for the Implementation of the Maternal Emergency Life-Saving System (J-CIMELS) and its simulation program, which has reduced maternal mortality due to direct causes in Japan. The Japan Association of Obstetricians and Gynecologists (JAOG), Japan Association of Obstetricians and Gynecologists, and Maternal Death Exploratory Committee (JMDEC) launched the Maternal Death Reporting Project in 2010. The project analyzed obstetricians' tendency to delay their initial response to sudden maternal deterioration.

Risk factors for severe disease and impact of severity on pregnant women with COVID-19: a case-control study based on data from a nationwide survey of maternity services in Japan.

Objective: To identify independent risk factors for severe COVID-19 in pregnant women and to evaluate the impact of disease severity on preterm birth.

Design: A case-control study based on data from a nationwide questionnaire-based survey of maternity services in Japan.

Setting: A questionnaire was mailed to all 2135 delivery institutions in Japan between July and August 2021.

Maternal death due to serious group A streptococcal toxic shock syndrome reduced after the coronavirus disease pandemic in Japan.

Serious group A streptococcal (GAS) infections and toxic shock syndrome (TSS) are rare conditions, but their rapid progression often results in death. The purpose of the present study was to clarify recent trend after the coronavirus disease (COVID-19) pandemic of GAS infection in Japan. Maternal death statistics were analyzed by the Japan Maternal Death Exploratory Committee.

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.

Current status of community-acquired infection of COVID-19 in delivery facilities in Japan.

A nationwide questionnaire survey about community-acquired infection of coronavirus disease 2019 (COVID-19) was conducted in July 2020 to identify the characteristics of and measures taken by Japanese medical facilities providing maternity services. A case-control study was conducted by including medical facilities with (Cases) and without (Control) community-acquired infection of COVID-19. Responses from 711 hospitals and 707 private clinics were assessed (72% of all hospital and 59% all private clinics provided maternity service in Japan).

Pregnancy-associated hemorrhagic stroke: A nationwide survey in Japan.

Aim: The number of maternal deaths due to pregnancy-associated hemorrhagic stroke has not decreased despite a gradual decrease of maternal death in Japan. This study aimed to clarify the risk factors of hypertensive disorders of pregnancy-associated hemorrhagic stroke.

Methods: This retrospective study analyzed pregnancy-associated hemorrhagic stroke patients with hypertensive disorders of pregnancy between 2013 and 2017 among 407 Japanese maternal and perinatal centers.

Pulmonary thromboembolism during pregnancy and puerperium: Comparison of survival and death cases.

Aim: In Japan, the frequency of maternal deaths due to obstetric hemorrhage has been decreasing in the last decade, while that resulting from other causes such as pulmonary thromboembolism (PTE) was consistent. To help reduce maternal deaths due to PTE, we investigated PTE during pregnancy and puerperium and compared the survival and death cases, and aimed to find out life and death factors.

Methods: This study was a retrospective analysis based on a clinical chart review in 407 maternal and perinatal centers.

Nationwide study of mortality and survival in pregnancy-related streptococcal toxic shock syndrome.

Aim: Streptococcal toxic shock syndrome is associated with the highest infection-related maternal mortality rates. We conducted a comparative analysis of the background factors and treatment course between survivors and nonsurvivors to improve our understanding concerning the optimal initial treatment approach for this fulminant disease.

Methods: This retrospective observational study was conducted based on clinical data collected from two national organizations.

Perinatal outcome in case of maternal death for cerebrovascular acute disorders: a nationwide study in Japan.

Objective: The goal of this study is to find clues to improve perinatal outcomes in the case of cerebrovascular acute disorders during pregnancy.

Study Design: We analyzed 35 cases of cerebrovascular diseases related to maternal deaths in Japan those that occurred during pregnancy and reported to the Committee of the Ministry of Health, Labor, and Welfare from 2010 to 2018.

Results: Cerebrovascular acute disorders occurred at 34.

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.

Decline in maternal death due to obstetric haemorrhage between 2010 and 2017 in Japan.

This descriptive study was based on the maternal death registration system established by the Japan Association of Obstetricians and Gynecologists and the Maternal Death Exploratory Committee (JMDEC). 361 women died during pregnancy or within 42 days after delivery between January 2010 and June 2017 throughout Japan were analysed, in order to investigate the trend in maternal deaths related to obstetric medical practice. Reports of maternal death were consistent, ranging from 45 cases in 2010 to 44 cases in 2017.

Analysis of preventability of malignancy-related maternal death from the nationwide registration system of maternal deaths in Japan.

We reviewed malignancy related maternal deaths in Japan to ascertain if there were avoidable factors. Malignancy-related maternal death in Japan reported to the Maternal Death Exploratory Committee, from 2010 to 2016 inclusive. There were 12 cases of maternal death caused by malignancy.

The most common causative bacteria in maternal sepsis-related deaths in Japan were group A Streptococcus: A nationwide survey.

The present retrospective study provides an in-depth analysis of the maternal sepsis-related deaths reported in Japan, and aims to guide future care regarding maternal sepsis. This is a nationwide, retrospective, descriptive cohort study. Data were retrospectively analyzed on all maternal death cases related to sepsis reported in Japan from 2010 through 2016.

Relationship between reproductive medicine for women with severe complications and maternal death in Japan.

Aim: To investigate the influence of reproductive medicine in maternal death cases in Japan.

Methods: This retrospective study investigated the incidence of maternal deaths related to reproductive medicine in Japan from 2013 to 2015, and the relationship between fertility treatment and maternal death.

Results: Fifteen out of 134 women (11.

Analysis of preventability of hypertensive disorder in pregnancy-related maternal death using the nationwide registration system of maternal deaths in Japan.

Hypertensive disorder of pregnancy (HDP) is a major cause of maternal death. The goal of this study was to investigate factors associated with maternal death due to HDP. HDP-related maternal deaths in Japan reported to the Committee of the Ministry of Health, Labor and Welfare from 2010 to 2015 were examined.

Analysis of preventability of stroke-related maternal death from the nationwide registration system of maternal deaths in Japan.

Objective: The number of stroke-related maternal deaths is increasing in Japan. We investigated methods to reduce maternal death from stroke.

Methods: We analyzed stroke-related maternal deaths in Japan reported to the Committee of the Ministry of Health, Labor, and Welfare from 2010 to 2014 inclusive.

Analysis of maternal death autopsies from the nationwide registration system of maternal deaths in Japan.

Objective: To clarify the necessity for and problems related to autopsy for determining the cause of maternal death in Japan.

Methods: Women who died during pregnancy or within a year after delivery were analyzed by the Maternal Death Exploratory Committee between 2012 and 2015 in Japan. Maternal deaths were analyzed to verify the requirement of autopsy in cases in which autopsy was performed and the need for autopsy in cases in which it was not performed.