Laboratory evaluation of hemostasis before cardiac operations

Area of Science:

• Cardiovascular Medicine
• Hematology
• Anesthesiology

Background:

• Preoperative coagulation testing before cardiac surgery is debated.
• Clinical decisions often lack simple, evidence-based recommendations.

Purpose of the Study:

• To provide simple and clinically relevant recommendations for preoperative coagulation testing in cardiac surgery.
• To guide the selection of appropriate laboratory tests.

Main Methods:

• Literature review focusing on preoperative coagulation testing.
• Analysis considering the low prevalence of unknown bleeding disorders.
• Evaluation of the risk of false-positive test results.

Main Results:

• A limited set of inexpensive tests (platelet count, activated partial thromboplastin time, prothrombin time) is suggested for baseline values.
• More comprehensive coagulation profiles are reserved for patients with a bleeding history.

Conclusions:

• Thorough medical history is the primary tool for detecting bleeding disorders.
• Asymptomatic patients require only a restricted coagulation profile before cardiac operations.