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Acute reaction to protamine. Its importance to surgeons
The American Surgeon
|January 1, 1984
Summary
Protamine sulfate administration after heart surgery can cause severe, life-threatening noncardiogenic pulmonary edema. Prompt recognition and treatment are crucial for patient survival and managing this rare but serious adverse reaction.
Area of Science:
- Cardiology
- Pulmonary Medicine
- Anesthesiology
Background:
- Protamine sulfate is used to reverse heparin anticoagulation after cardiopulmonary bypass in open heart surgery.
- Adverse reactions to protamine can range from mild hypotension to severe anaphylactoid responses.
- Noncardiogenic pulmonary edema is a rare but catastrophic complication associated with protamine administration.
Observation:
- Three open heart surgery patients developed fulminant noncardiogenic pulmonary edema post-protamine administration.
- The reaction presented with sudden onset, severe bronchoconstriction, hyperinflation, pulmonary hypertension, and high mortality.
- Ventilatory perfusion abnormalities were noted in survivors.
Findings:
- The severity of the protamine reaction was unrelated to the administered dose.
- Previous protamine exposure was identified in 14 out of 35 reviewed cases.
- Literature review identified three types of protamine reactions: hypotension, anaphylactoid reaction, and pulmonary edema with collapse.
Implications:
- Increased awareness of this protamine-induced pulmonary edema is essential for timely diagnosis and intervention.
- Treatment may require epinephrine, steroids, vasopressors, and potassium replacement.
- Discouraging the unnecessary use of protamine sulfate may reduce the incidence of this adverse event.