Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/15/2025

Noradrenaline Infusion Guidelines

Preparation and Dosing

  • Noradrenaline is the first-line vasopressor for management of hypotension in septic shock, as recommended by the Society of Critical Care Medicine 1
  • The standard preparation of noradrenaline is 4 mg in 250 ml D5W, resulting in a 16 μg/ml concentration, according to the Mayo Clinic Proceedings 2

Initial Drop Rate Calculation

  • For a 70 kg adult, the starting dose of 0.02 μg/kg/min equals approximately 5 ml/hour, with a 16 μg/ml concentration 2, 1

Titration Guidelines

  • The goal is to maintain a mean arterial pressure (MAP) ≥65 mmHg, with titration increments of 0.02-0.05 μg/kg/min every 5-10 minutes based on response, as recommended by the Society of Critical Care Medicine 1, 2

Special Considerations

  • Peripheral administration of noradrenaline is acceptable initially while central access is being established, according to the Mayo Clinic Proceedings 2
  • Continuous arterial blood pressure monitoring is recommended when available, and concurrent fluid resuscitation is essential, typically 30 ml/kg crystalloid in septic shock 2
  • If there is an inadequate response to noradrenaline alone, consider adding vasopressin 0.04 units/min, as suggested by the Mayo Clinic Proceedings 2

Monitoring and Complications

  • If extravasation occurs, infiltrate the area with 10-15 ml saline containing 5-10 mg of phentolamine, as recommended by the American Academy of Pediatrics 3

Dosing Adjustments

  • Elderly patients may be more sensitive to noradrenaline effects and may require lower doses, according to the American Heart Association 4