Identifying Contraindicated Antihypertensive Drugs in Pregnancy

The question asks to identify an antihypertensive drug that should not be used during pregnancy (contraindicated). Among the options provided, Ramipril is the drug that is contraindicated.

Reasoning for Ramipril Contraindication

Ramipril is an Angiotensin-Converting Enzyme (ACE) inhibitor. ACE inhibitors are known to cause fetal and neonatal toxicity, including:

• Fetal malformations (especially renal defects)
• Oligohydramnios (low amniotic fluid)
• Fetal death
• Skull hypoplasia

Due to these significant risks, ACE inhibitors like Ramipril are strictly contraindicated during pregnancy, particularly in the second and third trimesters.

Safety of Other Antihypertensive Options

The other drugs listed are generally considered safer or even commonly used in managing hypertension during pregnancy:

• Hydralazine: A vasodilator often used for hypertensive emergencies in pregnancy.
• Amlodipine: A calcium channel blocker that may be used for hypertension in pregnancy.
• Labetalol: A combined alpha- and beta-blocker frequently used as a first-line agent for hypertension in pregnancy.

Conclusion

Based on established pharmacological guidelines, Ramipril poses significant risks to the developing fetus and is therefore contraindicated in pregnancy.