Postoperative analgesia with transversus abdominis plane catheter infusions of levobupivacaine after major gynecological and obstetrical surgery. A case series.

Transversus abdominis plane block has become an important method of postoperative pain management for patients undergoing abdominal surgery but the modest duration is a major limitation. We report the successful use of a novel TAP catheter technique for continuous infusion of levobupivacaine in six gynecologic and obstetric patients. Bilateral TAP catheters were inserted at the end of surgery by ultrasound imaging using a Contiplex® C needle (B. Braun, Melsungen, Germany) in the Triangle of Petit or in a postero-subcostal level based on the location of the surgical incision. Following negative aspiration, 0.25% levobupivacaine 5 mL was injected. After withdrawing the needle, while holding the over-the-needle catheter in place, bilateral continuous infusion of 0.125% levobupivacaine at 2 mL/h from elastomeric pumps (INfusor SV2, Baxter, France) was started and continued for up to 50h. Before removal of the catheter, a bolus of 10 mL levobupivacaine 0.25% was administered. Successful analgesia was achieved in all six cases utilizing continuous infusion of levobupivacaine, minimizing the volume required. TAP infusions produce significant opioid sparing and better patient mobility. This technique may be a reliable alternative to neuraxial analgesia in major gynecological and obstetrical surgery.