Method for calculating blood loss at vaginal delivery

Area of Science:

• Obstetrics and Gynecology
• Clinical Measurement
• Maternal Health

Background:

• Accurate measurement of blood loss during vaginal delivery is crucial for managing postpartum hemorrhage.
• Existing methods for quantifying blood loss can be imprecise, potentially delaying critical interventions.

Purpose of the Study:

• To introduce and validate a novel method for quantifying blood loss during vaginal delivery.
• To provide obstetricians with a rapid and reliable tool for assessing immediate postpartum hemorrhage risk.

Main Methods:

• A specialized plastic drape is employed to collect and measure blood loss.
• Total blood loss is calculated by summing blood in sponges, clots, and unclotted red blood cells (RBC).
• The method was tested on ten patients, with results analyzed for accuracy and clinical utility.

Main Results:

• The procedure allows for immediate estimation of maximal potential blood loss post-delivery.
• A threshold of 15% of estimated blood volume is proposed to guide further assessment.
• Full quantification is recommended if blood loss exceeds this threshold, with results available within approximately four hours.

Conclusions:

• This drape-based method offers a practical approach to quantifying blood loss in vaginal deliveries.
• It enables prompt risk assessment for postpartum hemorrhage, facilitating timely clinical decision-making.
• The technique has the potential to improve patient safety by ensuring accurate blood loss monitoring.