A nurse is preparing to administer a dose of lamotrigine to a 35-year-old male client in an outpatient mental health clinic. Exhibits Click to highlight the information from the drug reference that supports the decision to withhold the lamotrigine. Drug Reference for Highlighting: Lamotrigine Classification: Anticonvulsant. Indications: Bipolar disorder maintenance, epilepsy. Contraindications/Precautions: Impaired renal function, impaired hepatic function. Adverse Reactions/Side Effects: Common: Headache, dizziness, diplopia. Rare: Stevens-Johnson syndrome, Drug reaction with eosinophilia and systemic symptoms (DRESS). Interactions: Carbamazepine, phenobarbital, oral contraceptives, valproic acid. Route/Dosage: 25 mg PO daily. Data Collection: Monitor for mood changes and suicidal ideation. Monitor for seizure activity, blood dyscrasias. Monitor for alterations in hepatic and renal function, temperature, rash. Implementation: Can be administered with or without meals. Taper dosage gradually when beginning and discontinuing. Do not abruptly discontinue.
Explanation & Rationale
The information from the drug reference that supports the decision to withhold lamotrigine includes: Rare: Stevens-Johnson syndrome, Drug reaction with eosinophilia and systemic symptoms (DRESS). Monitor for alterations in hepatic and renal function, temperature, rash. The presence of a red rash and petechiae on the client’s trunk and abdomen raises concern for a potential serious adverse reaction, such as Stevens-Johnson syndrome or DRESS, which are rare but severe. Since lamotrigine carries a risk for these potentially life-threatening conditions, withholding the medication until further evaluation by the healthcare provider is the appropriate course of action. Monitoring for worsening skin reactions and systemic symptoms remains crucial in determining the safest approach for the client’s treatment plan.