Case highlights fracture and intravascular retention of catheter, suggesting ultrasound aids retrieval techniques.
Reinserting an introducer needle into a radial arterial catheter can shear the cannula and leave an intravascular fragment. When bleeding from the shaft or resistance occurs, manipulation should be stopped, fracture should be suspected, and point‐of‐care ultrasonography (POCUS) should be used to localize the fragment and expedite safe surgical retrieval.
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Shiraishi et al. (2025) studied this question.
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