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What the neurosurgeon needs to know about the coagulation system
M Heesen1, M Winking, B Kemkes-Matthes
1Department of Anesthesiology, Justus-Liebig-University Giessen, Germany.
Surgical Neurology
|January 1, 1997
Summary
Intracranial surgery poses risks of thromboembolic events and bleeding due to disseminated intravascular coagulation (DIC). Routine lab tests help identify high-risk patients and diagnose hemostatic issues early.
Area of Science:
- Neuroscience
- Hematology
- Surgical Complications
Background:
- Intracranial surgery can lead to serious thromboembolic events like pulmonary embolism.
- Head trauma and brain tumors may trigger disseminated intravascular coagulation (DIC), a bleeding disorder.
- Early detection of hemostatic problems is crucial for patient management.
Purpose of the Study:
- To summarize the basic principles of coagulation and fibrinolysis.
- To outline laboratory parameters used in diagnosing hemostatic disorders.
- To describe changes in lab values associated with DIC, hypercoagulability, and hyperfibrinolysis.
Main Methods:
- Review of coagulation and fibrinolysis principles.
- Analysis of routine laboratory parameters (PT, PTT).
- Evaluation of specific markers for coagulation activation (TAT, F1+2) and fibrinolysis (FDP).
Main Results:
- Partial thromboplastin time (PTT) and prothrombin time (PT) assess intrinsic and extrinsic coagulation pathways.
- Thrombin antithrombin III complexes (TAT) and prothrombin fragment 1+2 (F1+2) indicate coagulation activation.
- Fibrinogen degradation products (FDP) reflect fibrinolytic system activity.
Conclusions:
- Understanding coagulation and fibrinolysis is key to managing surgical complications.
- Routine and specific laboratory tests aid in diagnosing and monitoring hemostatic disturbances.
- Identifying DIC, hypercoagulability, and hyperfibrinolysis is vital in neurosurgical patients.