Which child should the LPN initially follow up on?

The child that the LPN should initially follow up on is the one with an indwelling urinary catheter reporting burning. This situation raises concern for a potential urinary tract infection (UTI), which is a common complication in individuals with catheters. Symptoms such as burning may indicate infection or irritation, and prompt assessment is crucial to prevent further complications.

While a child with a temperature of 101°F receiving treatment for Hirschsprung’s disease may also require attention, fever alone doesn't always indicate an immediate complication, and the child's underlying condition may be monitored in relation to it. The presence of scant blood in an ostomy pouch warrants evaluation but may not be as urgent as signs of potential infection from a urinary catheter. Lastly, the child with friends writing on their fiberglass cast is likely in a safe and stable situation, as it does not indicate a medical concern that necessitates immediate follow-up.