Dermatomal spread in lateral quadratus lumborum blocks versus transversus abdominus plane blocks after laparoscopic colorectal surgery: a randomized clinical trial
Authors' conclusion
Compared with TAP blocks, QL blocks had greater dermatomal anesthesia spread and lower rates of an indeterminate block.
Study context
- Population
- Patients undergoing laparoscopic colorectal surgery153 completed
- Participants
- 75 vs 78
- Comparison
- Lateral quadratus lumborum (QL) block vs transversus abdominus plane (TAP) block
- QLn = 75
- TAPn = 78reference
- Primary endpoint
- Dermatomal anesthetic spread (loss of sensation to temperature in the PACU)
Primary result
As reported in the abstract
Number of dermatomes with loss of sensation to ice
QL
4.2
Mean · 95% CI 3.7–4.8
TAP
2.7
Mean · 95% CI 2.2–3.2
P = 0.0001
- QL more likely to have loss of sensation above T8
- P = 0.01
- QL more likely to have loss of sensation above T10
- P = 0.02
Secondary outcomes
| Outcome | P value |
|---|---|
| Indeterminate blockMore often with TAP blocks | P < 0.0001 |
Opioid consumption at 24 h and pain scores
- Did not differ
Safety
Opioid-related side effects
- Did not differ
Original publication
Dermatomal spread in lateral quadratus lumborum blocks versus transversus abdominus plane blocks after laparoscopic colorectal surgery: a randomized clinical trial. Reg Anesth Pain Med. Published 7 November 2024. doi:10.
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