In septic shock, what is the recommended initial fluid resuscitation volume and timeframe?

• A. 10 mL/kg within 1 hour
• B. 30 mL/kg isotonic crystalloids within the first 3 hours
• C. 50 mL/kg within 6 hours
• D. 5 mL/kg within 30 minutes

Answer: (B)

Septic shock requires rapid restoration of circulating volume to improve tissue perfusion and oxygen delivery. The recommended initial fluid resuscitation is 30 mL/kg of isotonic crystalloids (such as normal saline or a balanced solution like Lactated Ringer's) administered within the first 3 hours. This amount, scaled to body weight, aims to promptly raise preload and cardiac output, supporting perfusion while you reassess response. After giving fluids, reevaluate hemodynamics; if hypotension persists, initiate vasopressor support (typically norepinephrine) to maintain mean arterial pressure ≥65 mmHg and continue to monitor for fluid responsiveness to avoid overload. Using a smaller volume or stretching the timeframe would delay restoration of perfusion, whereas too large an or too rapid a bolus can increase the risk of fluid overload and edema.