Drug dosages

Labetalol Start at 2mg/min IV or quicker if a rapid response is required. Labetalol is usually effective once 200mg has been given after which a maintenance infusion of 5-50mg/h may be continued.

Nifedipine 10mg SL is an often effective alternative, given every 20min if necessary.

Hydralazine 5-10mg by slow IV bolus, repeat after 20-30min. Alternatively, by infusion starting at 200-300|jg/min and reducing to 50-150|jg/min.

Magnesium 4g over 20min followed by 1-1.5g/h by intravenous infusion until seizures have stopped for 24h.

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