Appropriate maintenance fluids would be: D5 0.45
NaCl with 20 mEq/L of KCl. If perfusion is inadequate,
fluid resuscitation should be initiated with an initial bolus: 20
mL/kg of isotonic crystalloid (0.9% NaCl or LR
solution) IV over <20 minutes. Consider higher sodium content
(isotonic) in postoperative patients and those with hypovolemia,
sepsis, pneumonia, asthma, congestive heart failure, meningitis,
or head injury.