Fetomaternal hemorrhage following trauma

Area of Science:

• Obstetrics and Gynecology
• Trauma Medicine
• Fetal Medicine

Background:

• Fetomaternal hemorrhage (FMH) is a known complication of maternal trauma.
• It can lead to serious fetal complications including anemia, isoimmunization, and fetal death.
• The frequency and volume of FMH following trauma require further investigation.

Purpose of the Study:

• To prospectively evaluate the incidence and volume of fetomaternal hemorrhage in pregnant patients following trauma.
• To assess fetal well-being, placental integrity, and fetal outcomes in this cohort.
• To determine factors influencing FMH and its impact on fetal health.

Main Methods:

• Prospective study of 32 pregnant patients with recent trauma.
• Quantification of fetomaternal hemorrhage volume using Kleihauer-Betke analysis.
• Assessment of fetal well-being, abruptio placentae, and fetal outcomes.
• Comparison with gestational-age-matched controls.

Main Results:

• Fetomaternal hemorrhage occurred in 28% (9/32) of trauma patients, with a mean volume of 16 ml.
• A statistically significant higher frequency and volume of FMH were observed in trauma patients compared to controls.
• Poor fetal outcomes (anemia, tachycardia, death) occurred in 3 of the 9 patients with FMH.
• Trauma type and gestational age did not correlate with FMH frequency or volume.

Conclusions:

• Maternal trauma is a significant risk factor for fetomaternal hemorrhage.
• Kleihauer-Betke analysis is essential for identifying FMH after trauma.
• Prompt Rh-immune globulin administration is vital for Rh-negative mothers experiencing FMH.