Fig. 2 | Scientific Reports

Fig. 2

From: Echogenic needles versus non-echogenic needles for in-plane ultrasound-guided infraclavicular axillary vein cannulation, a randomized controlled trial

Fig. 2

The figure illustrates a possible carryover effect for anesthesiologists (AN) 1, 2, 3, and 4. The venous access time data from both study groups were pooled and analyzed for each anesthesiologist. The green dots represent procedures with echogenic needles, and the red dots the procedures with non-echogenic needles. Regression analyses were not significant.

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