The ACE inhibitor cough
The ACE inhibitor cough is a dry, hacking cough caused by a buildup of bradykinin. It is harmless but persistent and bothersome, and it is a common reason to switch the patient to an ARB (a -sartan drug), which lowers blood pressure the same way without the cough. Teach patients to report the cough rather than stop the drug on their own.
Why ACE inhibitors cause a cough, and why the NCLEX tests it
ACE inhibitors (the -pril drugs) block the enzyme that makes angiotensin II, which also lets bradykinin build up. Bradykinin triggers the classic dry cough. The exam tests whether you recognize the cough and know the fix is switching to an ARB.
Key nursing considerations for the ACE inhibitor cough
Blocking ACE raises bradykinin, which irritates the airway and causes a dry, hacking, nonproductive cough.
The cough is not dangerous, but it often disrupts sleep and daily life.
Switching to an ARB (losartan, valsartan) keeps the blood-pressure benefit without the cough.
A cough is a nuisance; facial or tongue swelling is an airway emergency and needs the drug stopped immediately.
Tell patients to report the cough rather than quietly stop the medicine.
How the NCLEX turns the ACE inhibitor cough into a question
Report a persistent dry cough (call the provider), and any facial or tongue swelling immediately (angioedema emergency).
Teach a dry cough can start after beginning this medicine; tell your provider, who can switch you to a similar drug without the cough, and do not just stop taking it.
A patient switched from lisinopril to losartan. Recognize the switch was made because the ACE inhibitor caused a dry cough.
Quick answers
Why do ACE inhibitors cause a cough?
They increase bradykinin, which irritates the airway and causes a dry, hacking cough. It is harmless but often bothersome.
How is the ACE inhibitor cough treated?
By switching to an ARB (a -sartan drug), which lowers blood pressure the same way without raising bradykinin, so it does not cause the cough.
Is the ACE inhibitor cough dangerous?
The cough itself is not dangerous, but facial or tongue swelling (angioedema) is a separate airway emergency that requires stopping the drug and notifying the provider at once.
Keep studying
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Read the guide →All high-yield drug classes
The seven most-tested classes on one page, each decoded the same way.
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Every high-yield class, decoded the same way
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