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Sensitive objective markers for measuring aspirin responsiveness in pregnancy: An explorative scoping review
Azhar Al-Khulaifi1, Malkan Khatib2, Gamal Sayed3
1Department of Obstetrics and Gynecology, Women Wellness and Research Center, Doha, Qatar; Department of Population Medicine, College of Medicine, QU Health, Qatar University, Doha, Qatar.
Background:
Aspirin is frequently used in pregnancy to decrease the risk of developing pre-eclampsia. Studies have highlighted this potential benefit which in theory happens by inhibition of platelet function. However, questions remain on the appropriate dosing and the reliability of serum markers in determining aspirin responsiveness in pregnancy (ARP).
Objective:
review the literature on ARP and identify the gaps, followed by investigating the objective biomarkers used to assess ARP. This includes the factors associated such as aspirin formulations, doses, and patient comorbidities.
Methods:
A comprehensive search was conducted using keywords such as 'aspirin', 'pregnancy', and 'responsiveness' in relevant databases such as PubMed, SCOPUS, Cochrane from inception to March 2024. Our inclusion criteria enrolled pregnant women aged 18 years old and above, irrespective of their trimester status, who were prescribed aspirin for any medical indication.
Results:
The research findings encompass three key areas. Firstly, examination of the impact of different aspirin formulations on responsiveness revealed no significant differences between different formulations. Secondly, nine papers were identified with varied dosages of administered aspirin, highlighting a need for standardized approach to dosing, and investigating higher dosing and its impact. Thirdly, there is a lack of consensus on biomarkers used to assess ARP. Finally, this synthesis sheds light on prognostic factors of developing aspirin non-responsiveness, such as medical comorbidities.
Conclusion:
This scoping review identifies several residual uncertainties on ARP. The main gaps are validation of serum markers, understanding the influence of underlying morbidity on ARP, and determining appropriate aspirin dosing in pregnancy.
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