Continuous peripheral nerve block in combat casualties receiving low-molecular weight heparin

Area of Science:

• Anesthesiology
• Pain Management
• Trauma Surgery

Background:

• Continuous peripheral nerve block (CPNB) is vital for managing pain in combat casualties.
• Concurrent use of low-molecular weight heparin (LMWH) for venous thromboembolism prevention requires careful management of CPNB.
• Limited data exists on the safety of CPNB in patients receiving LMWH.

Purpose of the Study:

• To describe the experience of using CPNB in combat trauma patients treated with LMWH.
• To introduce institutional guidelines for managing CPNB catheters in patients on LMWH.
• To evaluate the safety and complication rates of CPNB in this patient population.

Main Methods:

• Retrospective chart review of 187 combat casualties treated with CPNB from March 2003 to April 2005.
• Data collected included CPNB type, duration, LMWH indication and dosage, and timing of LMWH administration relative to catheter placement/removal.
• Complications related to CPNB and bleeding events were recorded.

Main Results:

• Median LMWH (enoxaparin) dose was 30 mg given 21 hours before catheter insertion and 12 hours after removal.
• Catheters remained in place for a median of 8 days.
• Catheter-specific complications occurred in 3.7% of patients, with no catheter-related bleeding events observed.

Conclusions:

• Concurrent use of CPNB and LMWH in combat trauma patients appears safe, with no catheter-related bleeding complications in this series.
• Institutional guidelines can facilitate safe management of CPNB in patients receiving LMWH.
• Further research is warranted to confirm safety and optimize management strategies.