Final answer:
It is false to recommend routine volume expansion with crystalloid IVF in post-resuscitation infants with variable blood pressures as a routine without clinical assessment; IV fluids should be carefully managed due to risks of fluid overload.
Step-by-step explanation:
The recommendation for routine volume expansion with crystalloid IVF (intravenous fluids) in post-resuscitation infants, especially those with variable blood pressures, is false. While variable blood pressures in infants might indicate a need for fluid management, the approach to administering IV fluids should be individualized and based on specific clinical assessments. It is not appropriate to administer IV fluids as a matter of routine without carefully considering the infant's condition and potential risks associated with fluid overload.
Both normal saline and lactated Ringer's solution, the regular intravenous solutions used in medicine, are isotonic. This is important because isotonic solutions have the same osmolarity as blood plasma, which prevents red blood cells from shrinking or bursting due to osmotic imbalances when IV fluids are administered.
In cases where there is a risk of significant blood loss, appropriate access to IV fluids is critical. Newborns have immature kidneys that produce very dilute urine, which underscores the importance of adequate hydration from breast milk or formula to maintain homeostasis and prevent fluid imbalances. However, the decision to administer IV fluids must always be guided by the infant's clinical status and the potential for overhydration, which can be harmful to their delicate systems.