Can PGE1 Cause Fever?
Yes, prostaglandin E1 (alprostadil) commonly causes fever, occurring in approximately 14% of treated patients according to FDA labeling data.
Evidence from FDA Drug Label
The FDA-approved drug label for intravenous alprostadil explicitly lists fever as one of the most common adverse reactions, affecting about 14% of neonates treated for ductus-dependent congenital heart disease 1. This makes fever one of the more frequently observed side effects, alongside flushing (10%), bradycardia (7%), and apnea (12%) 1.
Clinical Context and Severity
The fever associated with PGE1 administration appears across multiple clinical contexts:
In neonates with congenital heart disease: Fever is well-documented as a common, generally well-tolerated side effect. A large review of 492 infants treated with PGE1 noted that fever development may require reduction of the infusion rate 2.
Pattern and timing: When fever occurs, it typically follows a predictable pattern. In studies of misoprostol (a PGE1 analogue), fevers often peaked 1-2 hours post-treatment and gradually declined over 3 hours 3. The fever may be preceded by moderate to severe shivering within 20 minutes of treatment 3.
Severity considerations: While most fevers are transient and self-limiting, high fevers (≥40.0°C) have been documented, particularly with sublingual misoprostol administration for postpartum hemorrhage, affecting up to 35.6% of treated women in one study 3. However, these high fevers did not lead to hospitalizations and resolved without serious sequelae 3.
Clinical Management Approach
Monitor temperature regularly during PGE1 infusion, particularly in the first 2 hours after initiation or dose changes. If fever develops:
- Consider dose reduction if fever is accompanied by other concerning symptoms (irritability, jitteriness)
- Fever alone typically does not require discontinuation of therapy
- The fever is generally self-limiting and resolves with supportive care
- Prophylactic antibiotics are recommended during PGE1 therapy due to possible increased infection risk, which helps differentiate drug-induced fever from infectious causes 2
Important Caveats
Do not automatically attribute all fevers to PGE1. While drug-induced fever is common, maintain vigilance for infectious causes, particularly since:
- Sepsis was reported in about 2% of patients receiving PGE1 1
- The drug may mask or complicate the clinical picture of infection
- Prophylactic antibiotic use is recommended during prolonged PGE1 therapy 2
The fever from PGE1 is a recognized, common, and generally benign side effect that should be anticipated but monitored carefully to distinguish from more serious complications.