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Hydralazine
Typically used for patients unresponsive to labetalol and nifedipine.
Needs diluting in saline, and given as slow boluses of 5mg over 10-15mins.
May also be given as slow iv infusion, maximum 18mg/hr.
Should be given in HDU environment.
Monitor for side effects - tachycardia, chest tightness, abdominal pain, nausea, vomiting and headaches.

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