Norepinephrine Administration Guidelines

Preparation and Administration

Norepinephrine should be administered through a central venous line at an initial dose of 0.05-0.1 mcg/kg/min, titrated every 5 minutes to achieve a target mean arterial pressure (MAP) of 65 mmHg 1
The standard concentration is 4 mg norepinephrine in 250 mL D5W or normal saline (16 mcg/mL) 1
An alternative concentration for fluid restriction is 8 mg norepinephrine in 250 mL (32 mcg/mL) 1
An infusion pump should be used for precise administration 1
The initial dose is 0.05-0.1 mcg/kg/min, titrated to achieve a target MAP of 65 mmHg, as recommended by the American College of Critical Care Medicine 1, 2

An arterial line should be placed as soon as practical for continuous blood pressure monitoring, as recommended by the Society of Critical Care Medicine 2, 1
The target MAP is 65 mmHg for most patients, with higher targets (70-80 mmHg) for patients with chronic hypertension 2, 3
Monitoring for signs of adequate tissue perfusion, including urine output, mental status, capillary refill, skin temperature, and lactate clearance, is essential 5
The dose should be titrated based on hemodynamic response, typically 0.05-0.5 mcg/kg/min, with a strength of evidence level of moderate to high 5, 1

If target MAP cannot be achieved with maximum doses of norepinephrine, consider adding vasopressin 0.03 units/minute or epinephrine as a second-line agent, as recommended by the American College of Critical Care Medicine 2, 1
Dobutamine (up to 20 mcg/kg/min) may be used if myocardial dysfunction is present, with a strength of evidence level of low to moderate 2, 4

Adequate fluid resuscitation should be ensured before or concurrent with norepinephrine initiation, as recommended by the Society of Critical Care Medicine 2, 4
Monitoring for extravasation is crucial if norepinephrine is administered peripherally, with a central line strongly preferred 1
Phenylephrine is not recommended except in specific circumstances, such as norepinephrine-associated arrhythmias, with a strength of evidence level of high 2, 4

Once the patient is hemodynamically stable, norepinephrine should be gradually tapered by 0.05 mcg/kg/min every 15-30 minutes while monitoring MAP, as recommended by the American College of Critical Care Medicine 1
If MAP falls below target, the previous effective dose should be reinstated and weaning attempted later, with a strength of evidence level of moderate to high 1