PMC3417945_01
Knotted stimulating femoral nerve catheter following its removal using saline expansion beneath the fascia iliaca. (A) A close-up of the stimulating knotted catheter. (B) The knot is located less than 1 cm from the tip of the catheter. Notice how the catheter is shorter than its original length; the black mark resembles 5 cm in an unknotted catheter.
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The catheter was intact but had a single knot at the distal end of the catheter (Figure 1).