Silicone tunneled catheters may develop ballooning or bulging during infusion and flushing which indicates a weakened catheter wall. This ballooning is usually noticed at the end of the catheter before the thickened area at the hub, or on double lumen catheters at the “Y” area. Polyurethane catheters (PowerLines™) are made of a more durable material and will not balloon.
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