Paravertebral block versus thoracic epidural for patients undergoing thoracotomy

Area of Science:

• Thoracic Anesthesia
• Pain Management
• Regional Anesthesia

Background:

• Thoracotomy can lead to severe post-operative pain due to surgical trauma.
• Effective pain management is crucial for recovery and preventing complications like lung collapse and infections.
• Multi-modal analgesia, including regional blocks, is standard practice, with thoracic epidural blockade (TEB) often preferred over paravertebral block (PVB).

Purpose of the Study:

• To compare TEB and PVB in adults undergoing thoracotomy.
• Evaluate analgesic efficacy, incidence of major and minor complications, hospital stay, and cost-effectiveness.
• Provide evidence to inform practice changes regarding regional anesthesia techniques in thoracic surgery.

Main Methods:

• Systematic review and meta-analysis of randomized controlled trials (RCTs).
• Searched multiple databases (Cochrane, MEDLINE, EMBASE, CINAHL) and handsearched journals.
• Included 14 RCTs with 698 participants comparing PVB and TEB in thoracotomy patients.

Main Results:

• No significant difference in 30-day mortality or major complications (cardiovascular, respiratory) between PVB and TEB.
• Comparable analgesic efficacy for both techniques at rest and during activity.
• PVB showed a significantly lower incidence of minor complications, including hypotension, nausea, vomiting, pruritus, and urinary retention.

Conclusions:

• Paravertebral block (PVB) is associated with fewer minor complications compared to thoracic epidural blockade (TEB).
• Both PVB and TEB provide similar efficacy in managing acute post-thoracotomy pain.
• Further high-quality RCTs are needed to investigate chronic pain, major complications, length of stay, and cost-effectiveness due to limitations in current evidence.