Seizure prophylaxis and management
›Magnesium sulfate protocol
›Standard dosing
›Loading dose 4 g IV over 15 to 20 minutes
›Alternative loading dose 6 g IV for high risk or active seizure per local protocol
›Maintenance 1 g per hour IV infusion
›Alternative maintenance 2 g per hour IV infusion per local protocol
›Continue 24 hours postpartum for severe features or eclampsia typical practice
›Recurrent seizure on magnesium
›Additional bolus 2 g IV
›Repeat once if needed per local protocol
›Toxicity monitoring
›Respiratory rate below 12 per minute concern
›Stop infusion and urgent evaluation
›Loss of deep tendon reflexes concern
›Stop infusion and urgent evaluation
›Urine output below 25 to 30 mL per hour concern
›Dose adjustment or hold
›Antidote
›Calcium gluconate 1 g IV over 3 minutes
›10 percent solution 10 mL equals 1 g
Acute severe hypertension
›Rapid acting antihypertensive options
›Labetalol IV
›Initial 20 mg IV
›Repeat 40 mg IV after 10 minutes if still severe
›Repeat 80 mg IV after 10 minutes if still severe
›Maximum cumulative 220 mg
›Contraindications
›Asthma with active bronchospasm
›Bradycardia
›Heart block
›Decompensated heart failure
›Hydralazine IV
›Initial 5 mg IV
›Repeat 5 to 10 mg IV after 20 minutes if still severe
›Typical maximum 20 to 30 mg in acute episode per protocol
›Adverse effects
›Reflex tachycardia
›Headache
›Nifedipine immediate release oral
›Initial 10 mg oral
›Repeat 20 mg oral after 20 minutes if still severe
›Repeat 20 mg oral after 20 minutes if still severe
›Maximum 50 mg within 1 hour typical protocol
›Cautions
›Avoid sublingual use
›Monitor for hypotension with magnesium
Ongoing blood pressure control
›Maintenance antihypertensives
›Labetalol oral
›Typical starting 100 to 200 mg oral twice daily
›Titration based on blood pressure response
›Nifedipine extended release oral
›Typical starting 30 mg oral daily
›Titration based on blood pressure response
›Methyldopa oral
›Alternative option when needed
›Slower onset
Fluids and pulmonary edema
›Volume strategy
›Restrictive fluids
›Avoid routine bolus
›Maintenance only if needed
›Pulmonary edema management
›Oxygen support escalation
›Loop diuretic
›Furosemide 20 mg IV
›Repeat dosing based on response and renal function
Delivery and obstetric management
›Definitive management considerations
›Delivery as cure
›Maternal stabilization before delivery when possible
›Timing guidance commonly used
›Preeclampsia without severe features
›Delivery at 37 weeks gestation typical recommendation
›Preeclampsia with severe features
›Delivery at 34 weeks gestation or later typical recommendation
›Earlier delivery for maternal or fetal deterioration
›Expectant management before 34 weeks
›Tertiary center requirement
›Close maternal and fetal monitoring
›Antenatal corticosteroids
›Betamethasone 12 mg IM
›Repeat 12 mg IM in 24 hours
›Magnesium for fetal neuroprotection
›Preterm delivery anticipated before 32 weeks per many protocols
Postpartum considerations
›Postpartum management
›Continued risk window
›New onset hypertension and symptoms up to 6 weeks postpartum
›Blood pressure peak postpartum
›Commonly 3 to 6 days postpartum
›Medication compatibility with breastfeeding
›Labetalol generally compatible
›Nifedipine generally compatible