Comparison of the Learning Curves of Ultrasound-Guided In-Plane Needle Placement Among Four Different Puncture Modes: A Randomized, Crossover, Simulation Study
Authors' conclusion
Ultrasound-guided in-plane puncture difficulty follows the order VP > HP = VV > HV.
Study context
- Population
- Novice residents performing ultrasound-guided in-plane needle placement on a puncture model
- Participants
- 40 residents
- Comparison
- Ultrasound-guided in-plane puncture: HP vs HV vs VP vs VV puncture modes
- Primary endpoint
- Puncture time, from needle entry until successful in-plane puncture under ultrasound guidance
Methodological details4-period crossover, Williams design
- 4-period crossover
- Williams design
Primary result
As reported in the abstract
Puncture time over 10 trials
P = 0.330
- Significant effects of puncture mode and trial number on puncture time (linear and generalized linear models)
- P < 0.001
Further findings
| Outcome | P value |
|---|---|
| Learning curve: puncture time from 1st to 10th trial within each modeHP · significant decrease | P = 0.001 |
| Learning curve: puncture time from 1st to 10th trial within each modeHV · significant decrease | P < 0.001 |
| Learning curve: puncture time from 1st to 10th trial within each modeVP · significant decrease | P < 0.001 |
| Learning curve: puncture time from 1st to 10th trial within each modeVV · significant decrease | P = 0.002 |
- Learning curve: puncture time from 1st to 10th trial within each mode — VP showed the steepest learning curve but after 10 trials its puncture time remained significantly higher than the other 3 modes
- P < .001
Original publication
Comparison of the Learning Curves of Ultrasound-Guided In-Plane Needle Placement Among Four Different Puncture Modes: A Randomized, Crossover, Simulation Study. Anesth Analg. Published 6 March 2025. doi:10.
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