ADVERSE REACTIONS
As with other narcotic analgesics, the most common serious adverse reactions reported to occur with SUBLIMAZE (fentanyl citrate) are respiratory depression, apnea, rigidity, and bradycardia; if these remain untreated, respiratory arrest, circulatory depression or cardiac arrest could occur. Other adverse reactions that have been reported are hypertension, hypotension, dizziness, blurred vision, nausea, emesis, diaphoresis, pruritus, urticaria, laryngospasm and anaphylaxis.
It has been reported that secondary rebound respiratory depression may occasionally occur postoperatively. Patients should be monitored for this possibility and appropriate countermeasures taken as necessary.
When a tranquilizer is used with SUBLIMAZE, the following adverse reactions can occur: chills and/or shivering, restlessness, and postoperative hallucinatory episodes (sometimes associated with transient periods of mental depression); extrapyramidal symptoms (dystonia, akathisia, and oculogyric crisis) have been observed up to 24 hours postoperatively. When they occur, extrapyramidal symptoms can usually be controlled with anti-parkinson agents. Postoperative drowsiness is also frequently reported following the use of neuroleptics with SUBLIMAZE.
Cases of cardiac dysrhythmias, cardiac arrest, and death have been reported following the use of SUBLIMAZE with a neuroleptic agent.
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