Related Experiment Video
Updated: Jun 6, 2025
09:15
In Vitro Thrombosis Test for Ventricular Assist Devices
Published on: March 21, 2025
477
Case-control study of clotting differences using ROTEM testing in pregnant patients with early vaginal bleeding
Patrick Maher1, Dan Katz2, Omara Afzal3
1Department of Emergency Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States.
European Journal of Obstetrics, Gynecology, and Reproductive Biology
|November 23, 2024
Summary
Rotational thromboelastometry (ROTEM) did not show significant differences in coagulation profiles between early pregnancy patients with vaginal bleeding and healthy pregnant individuals. These findings suggest ROTEM may not be a useful tool for evaluating early pregnancy bleeding.
Area of Science:
- Obstetrics and Gynecology
- Hematology
- Emergency Medicine
Background:
- Vaginal bleeding in early pregnancy is a common Emergency Department (ED) presentation, often linked to miscarriage.
- Conventional clotting tests inadequately detect hypercoagulability associated with miscarriage.
- Rotational thromboelastometry (ROTEM) offers comprehensive clotting evaluation, potentially identifying abnormalities in early pregnancy loss.
Purpose of the Study:
- To compare ROTEM coagulation results in patients with suspected miscarriage versus healthy pregnancies.
- To evaluate ROTEM's utility in diagnosing coagulopathic abnormalities contributing to early pregnancy complications.
Main Methods:
- Prospective case-control study comparing ED patients with vaginal bleeding (<20 weeks) to healthy pregnant women.
- ROTEM testing (EXTEM, INTEM, NATEM) was performed on both groups.
- Statistical analysis included t-tests and multiple linear regression, controlling for age, race, ethnicity, prior pregnancies, and estimated gestational age (EGA).
Main Results:
- 46 ED patients and 51 obstetric clinic patients were recruited.
- Groups had similar demographics but differed in EGA (7.6 vs. 10.7 weeks).
- No significant differences in ROTEM results were found between groups after controlling for confounders.
Conclusions:
- ROTEM coagulation profiles did not differ between early pregnancy patients with vaginal bleeding and healthy controls.
- ROTEM testing may not be beneficial for evaluating vaginal bleeding in early pregnancy.
- Further research is needed to explore alternative diagnostic markers for early pregnancy complications.
