Report a case of maternal mortality HERE.


  • Response Rate B.OSS

The response rate of the Belgian maternity units for March 2023 - February 2024.

Green: 75-100%    -    Yellow: 50-75%      -    Orange: 25-50%      -     Red: 0-25%

Green: 75-100%    -    Yellow: 50-75%      -    Orange: 25-50%      -     Red: 0-25%


  • Evening Symposium - Thursday 25th of April 2024 

How to care for your team when an obstetric drama occurred

CHU Saint-Pierre, 19h – 21h15

Introduction: 3 years of BAMM
         Dr. Griet Vandenberghe, Obs, B.OSS &BAMM, Ghent University Hospital
A mother dies while giving birth
         Dr. Julie Belhomme, Obs/Gyn, CHU Saint-Pierre, Brussels
How to manage a life-threatening complication (in a pregnant woman / woman giving birth)
         Dr. Antoine Herpain, Head of ICU CHU Saint-Pierre, Brussels
Debriefing and feedback for critical incidents 
         Dr. Nicolas Delvaux, Co-chair Group Biomedical Sciences KULAK
First or second victim, who cares? 
         Dr. Filiep Bataillie, Medical Director AZ Herentals

More information and presentations can be found here.


  • General anaesthesia for Caesarean section

Starting from February 2024, B.OSS is registering every woman of over 24 weeks of gestation given a general anaesthetic for a Caesarean section.

Over a period of 1 year, we want to gain an idea of the incidence of CS under anesthesia, the risk factors and any (anesthetic) complications. Collaboration with (obstetrically interested) anaesthetists will be important.


  • Newsletter 2024

We are happy to share with you the newsletter of B.OSS and BAMM 2024. View the Dutch and French version.


  • TOLAC data BMC Pregnancy and Childbirth

We are pleased to inform you that the following article is published in the BMC Pregnancy and Childbirth.

Influence of organizational factors on the offer and success rate of a trial of labor after cesarean section in Belgium: an ecological study

Many thanks to the B.OSS collaborators for their contribution.


  • BeCare Magazine with BAMM

Because of the World Patien Safety Day, a special edition of the BeCare magazine was published.

As 'enhanced surveillance system' for maternal death in Belgium, BAMM was also included in this edition:


  • Vacancy expert Emergency Medicine

BAMM is looking for experts in EM with an interest in obstetrical care. More information can be found here.


  • Newsletter 2023

We are happy to share with you the newsletter of B.OSS and BAMM 2023. View the Dutch and French version.


  • Biennial report 2020-2021

Thanks to the persistent cooperation of the Belgian maternity services, B.OSS is active for 10 years and B.OSS can count on the support of the Federal Public Service of Public Health. Every 2 year we send feedback to the hospitals on what B.OSS has achieved in recent years in a Biennial Report.

In this report you will find the results of the B.OSS studies of the past registration period, in addition to a description of the further development of B.OSS, the methodology and future studies. B.OSS currently registers Intrahepatic Cholestasis in Pregnancy (ICP) (until December 2023) and Surgical Complications during Pregnancy after Bariatric Surgery (until December 2022).

BAMM (Belgian Analysis system for Maternal Mortality) has been launched since January 2021. Most Belgian centers are already officially included in the BAMM project after a positive advice for participation from their ethics committee.


  • Evening Symposium B.OSS & BAMM

B.OSS exists 10 years. We want to celebrate this with an evening symposium.
Thursday 5th of May 2022, 19h – 21h

          - BAMM is launched: the methodology and first findings
                    Karolien Benoit, B.OSS-BAMM-officer
          - Le prestataire de soins, deuxième victime de la mortalité maternelle
                    Dr. Lamyae Benzakour, psychiatrist at the Geneva University Hospitals
          - COVID pandemic; the advantage of international obstetric surveillance systems                      (INOSS)
                    Prof. dr. Kitty Bloemenkamp, Maternal Fetal Medicine Specialist at UMC Utrecht &                     chairman of INOSS
          - B.OSS: what can we learn from the completed studies 
                    Dr. Griet Vandenberghe, B.OSS &BAMM, gynaecologist at Ghent University Hospital

More information and presentations can be found here.


  • Complications of Bariatric Surgery in Pregnancy

Starting from January 2021 B.OSS is registering every pregnant woman with bariatric surgery preconceptual, presenting with surgical complications during the pregnancy.

Since a surgical complication in early pregnancy may not always be reported to the gynaecologists, the abdominal surgeons in all centers need to be informed about the study. Therefore, this text in Dutch or French, can be used to spread the information within the hospitals.


  • BAMM

All cases of maternal death in Belgium since January 2021, are expected to be registered and analysed within BAMM.

However the obstetric services are not always involved in a case of maternal death (for example an early or late death) and not all disciplines who can be involved in a maternal death are aware of BAMM. It is important to make this project known to all services in your hospital (Intensive Care, Anesthesia, Cardiology, Psychiatrics, Oncology, Pulmonary disease, Emergency Service, ...). Thank you to spread the text about BAMM in Dutch or French.