Management of Anaphylaxis During Central Line Placement

Initial Management

The American College of Radiology recommends immediate administration of epinephrine intramuscularly at a dose of 0.3-0.5 mg for adults or 0.01 mg/kg for children, injected into the vastus lateralis muscle in the anterolateral thigh 1, 2, 3
The Journal of Allergy and Clinical Immunology suggests that epinephrine may need to be repeated every 5 minutes as necessary to control symptoms and blood pressure 4, 3
The American College of Radiology advises to stop the infusion or administration of the suspected triggering agent immediately 1, 2
The Journal of Allergy and Clinical Immunology recommends establishing and maintaining airway, administering oxygen at 6-8 L/min, and establishing intravenous access for fluid resuscitation with normal saline 4, 3

For persistent hypotension, the American College of Radiology considers intravenous epinephrine at 1:10,000 concentration, administered slowly 2, 3
The Journal of Allergy and Clinical Immunology suggests preparing an epinephrine infusion for protracted anaphylaxis, with a concentration of 4.0 μg/mL, and infusing at 1-4 μg/min, increasing to maximum 10 μg/min if needed 4, 5
For patients on beta-blockers who are unresponsive to epinephrine, the Journal of Allergy and Clinical Immunology recommends administering glucagon 1-5 mg intravenously over 5 minutes, followed by an infusion of 5-15 μg/min 5, 3

The Journal of Allergy and Clinical Immunology advises initiating cardiopulmonary resuscitation and advanced cardiac life support measures, including high-dose intravenous epinephrine and rapid volume expansion 4, 5

The Journal of Allergy and Clinical Immunology recommends observing the patient for at least 6 hours after symptom resolution, as biphasic reactions may occur, and individualizing the observation period based on the severity of the reaction 6, 7, 3
The Journal of Allergy and Clinical Immunology suggests transporting the patient to an emergency department or intensive care facility for continued monitoring, and providing consultation from an allergist-immunologist for evaluation of the cause and prevention strategies 4, 5, 7

The American College of Radiology distinguishes anaphylaxis from vasovagal reactions, which typically present with bradycardia rather than tachycardia and lack cutaneous manifestations 1
The American College of Radiology notes that there are no absolute contraindications to epinephrine administration in anaphylaxis, even in patients with cardiac disease, advanced age, or frailty 1, 2
The American College of Radiology warns that delay in administering epinephrine has been associated with increased mortality and risk of biphasic reactions 1, 2
The American College of Radiology notes that biphasic reactions can occur up to 72 hours after the initial reaction and are associated with greater severity of the initial reaction, and that early epinephrine administration may reduce the risk of biphasic reactions 2