A 29-year-old woman at 24 weeks gestation with a medical history of hypertension presents with a blood pressure of 150/100 mmHg measured on two separate occasions. She has no signs of organ damage or other complications. The obstetrician decides to initiate antihypertensive therapy. Which of the following medications is most appropriate for managing her hypertension during pregnancy?
- Labetalol
- Enalapril
- Hydrochlorothiazide
- Methyldopa
- Losartan
Answer: A
Labetalol
For the initial treatment of high blood pressure in pregnancy, these are the most commonly used and recommended medications:
- Labetalol (Normodyne, Trandate)
- Nifedipine (Procardia, Adalat)
- Methyldopa (Aldomet)
Labetalol is often preferred for managing hypertension in pregnancy due to its safety profile and effectiveness. It is a beta-blocker with alpha-blocking activity that helps lower blood pressure without significant reductions in blood flow to the uterus. If needed, PO hydralazine (direct arteriolar vasodilator) may be added to achieve and maintain target blood pressure.
- Methyldopa is also acceptable, but many patients will not achieve blood pressure goals or are bothered by its sedative effect at high doses
ACEIs (captopril) are contraindicated in pregnancy. Propranolol can be used but may cause growth restriction. Diuretics are not used in pregnancy. Calcium channel blockers and centrally acting agents (while not contraindicated) should be avoided.
Know Your Content Blueprint
Hypertension disorders in pregnancy are covered in the NCCPA Content Blueprint Reproductive System (8%)
Learn more about hypertension disorders in pregnancy and take the lesson: hypertension disorders in pregnancy