Fluid Resuscitation Guidelines

Initial Fluid Selection and Administration

The American College of Critical Care Medicine recommends that crystalloids are the fluid of choice for initial resuscitation, with balanced crystalloids generally preferred over normal saline to reduce the risk of hyperchloremic metabolic acidosis, although the initial fluid of choice is isotonic saline (0.9% sodium chloride) for patients with hypovolemia 1, 2
For septic patients, administer at least 30 mL/kg of crystalloid within the first 3 hours, with an initial fluid volume of 10-20 mL/kg, and repeated doses based on individual clinical response 5, 6
The initial fluid bolus should be 250-1000 mL administered rapidly and repeatedly for non-septic patients, with reassessment of the patient's hemodynamic status after each fluid bolus 6

Reassess the patient's hemodynamic status after each fluid bolus, evaluating heart rate, blood pressure, respiratory rate, skin perfusion, capillary refill time, urine output (target >0.5 mL/kg/hr), mental status, and serum lactate levels (aim for 20% reduction if elevated) 4, 5
Use dynamic measures of fluid responsiveness rather than static measures like CVP alone, with a target urine output of >0.5 mL/kg/hr 3, 5

For patients requiring large volumes of fluid (e.g., in sepsis), synthetic colloids may be considered due to their longer duration in circulation, though evidence does not show superiority to crystalloids, and colloids are much more expensive than crystalloids (albumin costs around 140 Euro/L, HES 25 Euro/L, isotonic saline 1.5 Euro/L) 2, 6
Hydroxyethyl starches should be avoided due to increased risk of acute kidney injury and mortality, especially in patients with pre-existing kidney disease 3