From the Guidelines
The patient should receive flumazenil after receiving 10 milligrams of Versed (midazolam) for status epilepticus.
Rationale
- The effects of midazolam may persist for 80 minutes or longer, and flumazenil is a benzodiazepine-specific antagonist that can reverse sedation, psychomotor impairment, memory loss, and respiratory depression 1.
- Flumazenil is effective in reversing benzodiazepine-induced sedation and amnesia, and it can also reverse ventilatory depression in patients sedated with a combination of benzodiazepine and opioid 1.
- The recommended dose of flumazenil is an incremental intravenous bolus of 0.1-0.3 mg, which can be repeated as needed to prevent re-sedation 1.
Clinical Considerations
- The patient's airway, breathing, and circulation (ABCs) should be assessed and managed accordingly.
- The patient should be monitored for signs of re-sedation or respiratory depression after administration of flumazenil.
- Other treatments for status epilepticus, such as lorazepam or levetiracetam, may also be considered, but flumazenil is specifically indicated for reversal of benzodiazepine effects 1.
- It is essential to note that flumazenil may not be necessary if the patient is being closely monitored and the effects of midazolam are expected to wear off soon, but in cases where the patient is at risk of re-sedation or respiratory depression, flumazenil should be considered 1.
From the FDA Drug Label
When midazolam is used before other intravenous agents for induction of anesthesia, the initial dose of each agent may be significantly reduced, at times to as low as 25% of the usual initial dose of the individual agents. The patient should receive close monitoring after receiving 10 milligrams of Versed (midazolam) for status epilepticus, as the label does not provide specific guidance on what to administer after the initial dose.
- The label recommends titrating the dose to the desired level of sedation, taking into account the patient’s age, clinical status, and current medications.
- It is also recommended to assess sedation at regular intervals and adjust the midazolam infusion rate as needed 2.
From the Research
Treatment Protocol
After receiving 10 milligrams of Versed (midazolam) for status epilepticus, the patient may require additional treatment to manage the condition. The following steps can be considered:
- Administration of phenytoin, as seen in the study 3, where patients received an initial dose of 15 mg IM of midazolam, with a simultaneous oral dose of phenytoin (15 to 20 mg/kg) or carbamazepine (15 mg/kg)
- Continuous infusion of midazolam, as described in the study 4, where patients received an intravenous bolus of midazolam (200 microg/kg) followed by a continuous infusion at 1 microg/kg min
- Monitoring of the patient's response to treatment and adjustment of the dosage as needed, as seen in the study 5, where patients were treated with a regimen that included midazolam and phenytoin, with subsequent steps taken if clinical evidence of epileptic activity persisted
Considerations
When treating status epilepticus with midazolam, the following considerations should be taken into account:
- The patient's age and underlying medical condition, as seen in the study 6, where the effectiveness of midazolam was lower in patients in whom midazolam was initiated more than 3 hours after seizure onset
- The potential for adverse effects, such as drowsiness, as seen in the study 3, where the only adverse effect was drowsiness in a variable grade
- The need for close monitoring of the patient's vital signs and seizure activity, as seen in the study 4, where the time from beginning of treatment to control of seizures, infusion rate, and side-effects were monitored
Potential Next Steps
Based on the studies reviewed, potential next steps in the treatment of status epilepticus after receiving 10 milligrams of Versed (midazolam) may include:
- Administration of additional antiepileptic medications, such as phenobarbital or pentobarbital, as seen in the study 5
- Continuous infusion of midazolam, as described in the study 4
- Close monitoring of the patient's response to treatment and adjustment of the dosage as needed, as seen in the study 5 and 6