New Surveillance Model Reveals Nearly Half of Severe Pregnancy Complications Occur Outside the Delivery Room

Extended monitoring from conception to 6 weeks postpartum identifies thousands of maternal complications missed by delivery-room-only surveillance.

By: AXL Media

Published: Mar 16, 2026, 7:02 AM EDT

Source: Information for this report was sourced from the Canadian Medical Association Journal (CMAJ).

The Hidden Scope of Maternal Complications

Current maternal health monitoring in Canada primarily focuses on the labor and delivery window. However, new research published in the CMAJ indicates that this narrow focus creates a dangerous blind spot. By extending the monitoring period to include the entire pregnancy and the first six weeks after birth, researchers from McMaster University and Hamilton Health Sciences discovered that the rate of severe maternal morbidity (SMM) is 27.24 per 1,000 births. This suggests that nearly 10,000 people in Canada experience life-altering complications every year that traditional metrics might overlook.

Timing and Location of Risks

The study found that complications are distributed across the entire reproductive timeline, aligning with coroner data showing that maternal deaths are almost equally split between the period before and after delivery.

Prenatal Period (Conception to Labor): 16% of SMM events.

Labor and Delivery: 55% of SMM events.