Key result
Higher intraoperative ACT levels fail to worsen postoperative platelet drop after cardiopulmonary bypass.
Why the study?
Anticoagulation monitoring using activated clotting time (ACT) during cardiopulmonary bypass is standard, but its effect on postoperative platelet levels remains unclear.
Does the level of activated clotting time (ACT) during cardiopulmonary bypass affect postoperative platelet levels in patients undergoing open heart surgery?
Cohort (n=40)
No
Does the level of activated clotting time (ACT) during cardiopulmonary bypass affect postoperative platelet levels in patients undergoing open heart surgery?
Answers are grounded in this paper and cite their sources.
The decrease in postoperative platelet levels after cardiopulmonary bypass is independent of the intraoperative activated clotting time (ACT) levels, suggesting it is caused by other factors like extracorporeal circuit elements and hemodilution.
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Kalın et al. (2025) conducted a cohort in Open heart surgery with cardiopulmonary bypass (n=40). Intraoperative ACT >700 seconds vs. Intraoperative ACT 480-700 seconds was evaluated on Postoperative platelet count decrease amount (p=0.705). Postoperative platelet levels decreased significantly following cardiopulmonary bypass, but the magnitude of this decrease was independent of whether intraoperative ACT levels were 480-700 or >700 seconds.
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