https://www.selleckchem.com/pr....oducts/senaparib.htm
The most important steps were needle tip identification before injection, OR (95%CI) 2.12 (1.61-2.80; p less then 0.001); and needle tip identification before advance of the needle, 1.80 (1.36-2.39; p less then 0.001). The most important errors were failure to identify the needle tip before injection, 2.40 (1.78-3.24; p less then 0.001); and failure to quickly regain needle tip position when tip visibility was lost, 2.03 (1.5-2.75; p less then 0.001). In conclusion, needle-tracking technology improved performance in a quarter of subje
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