Key result
Routine preoperative PT and PTT screening in patients without clinical indications yielded abnormal results in only 2.7% of cases, with only 0.2% potentially benefiting from the test.
Why the study?
Does preoperative screening with PT and PTT improve detection of bleeding risk and change patient care in surgical patients?
Population
750 patients on three surgical services
Design
Cohort
Authors
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Does not support routine preoperative coagulation testing; leaves open utility of history-guided strategies pending prospective data.
Observational (n=750)
Does preoperative screening with PT and PTT improve detection of bleeding risk and change patient care in surgical patients?
Absolute Event Rate: 2.7% vs 18%
Routine preoperative screening with PT and PTT in patients without clinical indications has a very low yield and high rate of false positives, suggesting it is unnecessary.
John M. Eisenberg (1982) conducted an observational in Preoperative surgical patients (n=750). Preoperative PT and PTT screening without clinical indications vs. Screening with clinical indications was evaluated on Abnormal PT or PTT result. Routine preoperative PT and PTT screening in patients without clinical indications yielded abnormal results in only 2.7% of cases, with only 0.2% potentially benefiting from the test.
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