Cutaneous sensory block area of the ultrasound-guided subcostal transversus abdominis plane block: an observational study
Authors' conclusion
The subcostal US-TAP results in a heterogeneous non-dermatomal CSBA with varying size and distribution across the medial abdominal wall.
Study context
- Population
- Patients undergoing elective laparoscopic cholecystectomy60 unilateral blocks
- Participants
- 30 patients
- Outcome
- Cutaneous sensory block area (CSBA), mapped by cold sensation
- Follow-up
- 150 min after block application
Main finding
As reported in the abstract
CSBA · 150 min after block
| Group | Value | Range |
|---|---|---|
| Subcostal US-TAP | median 174 (IQR 119-219 cm²) cm² | 52-398 cm² |
Subcostal US-TAP
Valuemedian 174 (IQR 119-219 cm²) cm²
Range52-398 cm²
- Epigastric and infraumbilical component (unilateral blocks)
- 42 of the 60 (70%)
- Epigastrium only (unilateral blocks)
- 12 of the 60 (20%)
- Infraumbilical only (unilateral blocks)
- 4 of the 60 (7%)
- No cutaneous sensory block area (CSBA) (unilateral blocks)
- 2 of the 60 (3%)
- In no patient did CSBA cover abdominal wall lateral to a vertical line through the anterior superior iliac spine
- 0
Observational data: associations, not effects.
Original publication
Cutaneous sensory block area of the ultrasound-guided subcostal transversus abdominis plane block: an observational study. Reg Anesth Pain Med. Published 27 August 2023. doi:10.
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