North American Registry of Midwives (NARM) Practice Exam

What is the most widely accepted definition of postpartum hemorrhage?

1. Loss of 300mL of blood or greater

2. Loss of 400mL of blood or greater

3. Loss of 500mL of blood or greater

4. Loss of 600mL of blood or greater

The correct answer is: Loss of 500mL of blood or greater

The most widely accepted definition of postpartum hemorrhage (PPH) is a loss of 500 mL of blood or greater following vaginal delivery. This definition is based on standard clinical guidelines and is widely recognized in practice, aligning with the criteria set by organizations such as the World Health Organization and the American College of Obstetricians and Gynecologists. This specific threshold of 500 mL is important because it highlights the need for healthcare providers to monitor women closely after delivery, as an excessive loss of blood can lead to serious health complications or even maternal mortality. Defining PPH in this manner helps ensure that timely intervention and appropriate management are implemented to prevent adverse outcomes. Alternative definitions, such as losses of 300 mL, 400 mL, or above 600 mL, do not align with the established consensus and are not typically used in clinical settings, making them less relevant in discussions about postpartum care.