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Thoracic paravertebral block for nephrectomy: a randomized, controlled, observer-blinded study.

Ji Seok Baik1, Ah-Young Oh, Chan Woo Cho

  • 1Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Korea.

Pain Medicine (Malden, Mass.)
|December 18, 2013
PubMed
Summary

Adding a preoperative thoracic paravertebral block (TPVB) significantly improved postoperative pain control and reduced fentanyl use in nephrectomy patients compared to IV PCA alone.

Keywords:
FentanylNephrectomyPatient-Controlled AnalgesiaPostoperative PainPre-Emptive AnalgesiaThoracic Paravertebral Block

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Area of Science:

  • Anesthesiology
  • Pain Management
  • Surgical Oncology

Background:

  • Effective postoperative pain management is crucial for patient recovery after nephrectomy.
  • Intravenous patient-controlled analgesia (IV PCA) is a common method for managing surgical pain.
  • Optimizing analgesia strategies can reduce opioid consumption and improve patient outcomes.

Purpose of the Study:

  • To evaluate the efficacy of a preoperative single thoracic paravertebral block (TPVB) combined with IV PCA for postoperative analgesia in nephrectomy patients.
  • To compare pain scores, analgesic consumption, and respiratory function between patients receiving TPVB plus IV PCA and those receiving IV PCA alone.

Main Methods:

  • A prospective, randomized, controlled, observer-blinded trial was conducted at a university hospital.
  • Thirty-four adult patients undergoing elective open nephrectomy were randomized into two groups: TPVB plus IV PCA (group T) or IV PCA alone (group C).
  • A single preoperative TPVB with ropivacaine was administered under ultrasound guidance; fentanyl was used for IV PCA. Pain scores, fentanyl consumption, and inspiratory volumes were assessed postoperatively.

Main Results:

  • Group T demonstrated significantly lower postoperative pain scores and fentanyl consumption compared to group C at all measured time points up to 24 hours.
  • There were no significant differences in postoperative inspiratory volumes between the groups.
  • Hemodynamic responses, including systolic arterial pressure and mean arterial pressure increases after skin incision, were attenuated in group T.

Conclusions:

  • A preoperative single TPVB, when added to IV PCA, significantly enhances postoperative analgesia in patients undergoing nephrectomy.
  • This multimodal approach effectively reduces pain and opioid requirements, contributing to better surgical recovery.
  • TPVB offers a valuable adjunct for optimizing pain management in nephrectomy patients.