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Dexmedetomidine induced hypotension and hemostatic markers
Gehan M Eid1, Shaimaa F Mostafa1, Mohamed M Abu Elyazed1
1Department of Anesthesia, Surgical Intensive Care and Pain Medicine, Faculty of Medicine, Tanta University, Egypt.
Journal of Anaesthesiology, Clinical Pharmacology
|May 30, 2023
Summary
Dexmedetomidine-induced hypotension during spine surgery prevented increased platelet aggregation and preserved coagulation factors. This anesthesia method offers a better hemostatic balance compared to normotensive anesthesia.
Area of Science:
- Anesthesiology
- Hematology
- Surgical Research
Background:
- Surgical trauma alters the hemostatic system, leading to a hypercoagulable state.
- Understanding these alterations is crucial for optimizing patient outcomes.
Purpose of the Study:
- To compare hemostatic changes during normotensive versus dexmedetomidine-induced hypotensive anesthesia in spine surgery patients.
- To assess effects on platelet aggregation, coagulation, and fibrinolysis.
Main Methods:
- Sixty spine surgery patients were randomized into normotensive and dexmedetomidine-induced hypotensive groups.
- Platelet aggregation, prothrombin time (PT), activated partial thromboplastin time (aPTT), platelet count, antithrombin III, fibrinogen, and D-dimer were measured at various time points.
Main Results:
- Normotensive anesthesia increased platelet aggregation and altered coagulation markers postoperatively.
- Dexmedetomidine-induced hypotension showed no significant increase in platelet aggregation and better preservation of platelet and coagulation factors.
- Both groups exhibited increased postoperative D-dimer levels.
Conclusions:
- Dexmedetomidine-induced hypotension mitigates the prothrombotic changes seen with normotensive anesthesia during spine surgery.
- This approach may offer improved hemostatic balance and preservation of key coagulation components.
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