Prophylactic analgesia before percutaneous liver biopsy: a clinical comparative study

Area of Science:

• Hepatology
• Pain Management
• Pharmacology

Background:

• Liver biopsy is the gold standard for diagnosing liver diseases but is often painful.
• Pre-biopsy analgesia is frequently avoided due to concerns about masking symptoms.
• Previous studies have mapped post-biopsy pain to guide analgesia strategies.

Purpose of the Study:

• To compare the efficacy of two prophylactic regimens for managing pain and anxiety during liver biopsy.
• To evaluate a combination of sublingual tramadol hydrochloride and oral lorazepam against oral diazepam alone.

Main Methods:

• A randomized study of 113 patients undergoing liver biopsy.
• Group 1 (Analgesia Group, AG): received sublingual tramadol HCl (50 mg) and oral lorazepam (1 mg).
• Group 2 (Non-Analgesia Group, NAG): received oral diazepam (5 mg) alone.
• Pain (Visual Analogue Scale) and anxiety (State Anxiety Inventory) were measured pre-biopsy and at 30 minutes and 6 hours post-biopsy.

Main Results:

• The tramadol-lorazepam group (AG) reported significantly lower pain scores at 30 minutes (1.8 vs. 3.1) and 6 hours (0.8 vs. 1.5) post-biopsy compared to the diazepam group (NAG).
• Fewer patients in the AG experienced high pain intensity (>7) compared to the NAG (3.6% vs. 13.8%).
• Anxiety levels were comparable between the two groups.

Conclusions:

• Prophylactic administration of tramadol and lorazepam significantly reduces post-liver biopsy pain.
• This combination regimen is safe and effective for routine use.
• The findings support the routine use of tramadol and lorazepam for pain management before liver biopsy.