Final answer:
If a child remains hemodynamically unstable despite 2 to 3 boluses of 20 mL/kg isotonic crystalloid, a different fluid should be administered.
Step-by-step explanation:
If a child remains hemodynamically unstable despite 2 to 3 boluses of 20 mL/kg isotonic crystalloid, a different fluid should be administered. In cases of severe hypovolemia, blood loss, or persistent shock, blood products such as packed red blood cells or fresh frozen plasma may need to be administered intravenously.