Enhanced Post-Operative Recovery with Continuous Peripheral Nerve Block After Lower Extremity Amputation

Area of Science:

• Anesthesiology
• Surgical Outcomes
• Pain Management

Background:

• Lower extremity amputations carry high risks of morbidity and mortality despite advancements in perioperative care.
• Single-shot peripheral nerve blocks offer limited benefits for postoperative outcomes.
• Continuous catheter-based peripheral nerve blocks are being investigated for enhanced patient recovery.

Purpose of the Study:

• To evaluate the effectiveness of preemptive continuous catheter-based peripheral nerve blocks in reducing pulmonary complications.
• To assess the impact on acute postoperative pain scores.
• To determine the reduction in opioid consumption following lower extremity amputation.

Main Methods:

• A retrospective quality improvement project compared patients receiving general anesthesia with a peripheral nerve block catheter versus general anesthesia alone.
• The primary endpoint was the rate of postoperative pulmonary complications.
• Secondary outcomes included acute pain scores and opioid use within 48 hours, adjusted for confounding variables.

Main Results:

• Patients receiving continuous peripheral nerve blocks had significantly lower odds of postoperative pulmonary complications (OR 0.11).
• Acute postoperative pain scores were significantly reduced in the catheter group (OR 0.72).
• Opioid consumption was also significantly lower in patients with continuous nerve blocks (OR 0.97).

Conclusions:

• Preemptive continuous peripheral nerve blocks are effective in reducing pulmonary complications after lower extremity amputation.
• This technique significantly decreases acute postoperative pain.
• Continuous nerve blocks lead to reduced narcotic use in the postoperative period.