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Lisinopril NCLEX Review: Side Effects You CANNOT Miss
Lisinopril (ACE Inhibitors) — NCLEX + Clinical Breakdown
💊 1. Core Mechanism (Know This for NCLEX)
ACE inhibitors block angiotensin-converting enzyme
↓ Angiotensin II → vasodilation
↓ Systemic vascular resistance → ↓ blood pressure
↓ Afterload → heart pumps more efficiently
❤️ 2. Why We Give It (Clinical Use)
Hypertension
Heart failure
Post-MI (prevents ventricular remodeling)
Kidney protection in diabetics (↓ glomerular pressure)
⚠️ 3. First-Dose Effect (HIGH-YIELD)
Risk of first-dose hypotension
Monitor BP closely after first dose or dose increase
Educate patient on orthostatic hypotension
Change positions slowly
Prevent falls
🧪 4. Lab Monitoring (CRITICAL SAFETY)
Monitor BMP:
Potassium
Creatinine
BUN
ACE inhibitors → retain potassium
👉 Nursing actions:
High potassium → HOLD medication
Assess kidney function before giving
⚡ 5. Potassium “Tug-of-War”
ACE inhibitors → ↑ potassium (retain)
Loop diuretics (e.g., Lasix) → ↓ potassium (waste)
Balance is unpredictable → requires close monitoring
⚠️ Risk:
Hyperkalemia → fatal arrhythmias
😷 6. Dry Cough (Classic NCLEX Side Effect)
Caused by bradykinin buildup
Persistent, dry, non-productive cough
Can occur anytime (days → months later)
👉 Nursing action:
Do NOT ignore
Switch to ARB (losartan, valsartan)
🚨 7. Angioedema (LIFE-THREATENING)
Caused by excess bradykinin
Symptoms:
Swollen lips/tongue
Airway swelling
Stridor
❗ KEY POINT:
NOT histamine-mediated → typical allergy meds may NOT work
👉 Priority:
Airway management FIRST
Call rapid response
Prepare for intubation
🧠 8. NCLEX Trap: Angioedema vs Anaphylaxis
Anaphylaxis = histamine → responds to epi/Benadryl
ACE angioedema = bradykinin → focus on airway, not meds
🚫 9. Contraindications (MUST KNOW)
Pregnancy (black box warning)
Causes fetal kidney damage
Use caution in kidney disease
Avoid with potassium supplements
🧂 10. Patient Education (VERY TESTABLE)
Avoid salt substitutes (high in potassium)
Report:
Persistent cough
Swelling of face/lips
Dizziness
💊 11. Heart Failure Combo Therapy
“Triple Therapy” Approach:
ACE inhibitor (↓ afterload)
Beta blocker (↓ heart rate, ↑ filling time)
Loop diuretic (↓ preload, fluid removal)
👉 Together:
Improve cardiac efficiency
Reduce hospitalizations
🔑 12. Big Clinical Takeaways
ACE inhibitors = protect heart + kidneys
Always think:
BP
Potassium
Kidney function
NEVER ignore:
Cough
Swelling
Hypotension
Want to reach out? Send an email to [email protected] or visit SuperNurse.ai
The content presented in The Super Nurse Podcast is for educational purposes only and should not be considered medical advice. The host and creators are not responsible for any clinical decisions made based on this content. Always adhere to your institution’s policies and consult appropriate healthcare professionals when making patient care decisions.
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By Brooke WallaceLisinopril (ACE Inhibitors) — NCLEX + Clinical Breakdown
💊 1. Core Mechanism (Know This for NCLEX)
ACE inhibitors block angiotensin-converting enzyme
↓ Angiotensin II → vasodilation
↓ Systemic vascular resistance → ↓ blood pressure
↓ Afterload → heart pumps more efficiently
❤️ 2. Why We Give It (Clinical Use)
Hypertension
Heart failure
Post-MI (prevents ventricular remodeling)
Kidney protection in diabetics (↓ glomerular pressure)
⚠️ 3. First-Dose Effect (HIGH-YIELD)
Risk of first-dose hypotension
Monitor BP closely after first dose or dose increase
Educate patient on orthostatic hypotension
Change positions slowly
Prevent falls
🧪 4. Lab Monitoring (CRITICAL SAFETY)
Monitor BMP:
Potassium
Creatinine
BUN
ACE inhibitors → retain potassium
👉 Nursing actions:
High potassium → HOLD medication
Assess kidney function before giving
⚡ 5. Potassium “Tug-of-War”
ACE inhibitors → ↑ potassium (retain)
Loop diuretics (e.g., Lasix) → ↓ potassium (waste)
Balance is unpredictable → requires close monitoring
⚠️ Risk:
Hyperkalemia → fatal arrhythmias
😷 6. Dry Cough (Classic NCLEX Side Effect)
Caused by bradykinin buildup
Persistent, dry, non-productive cough
Can occur anytime (days → months later)
👉 Nursing action:
Do NOT ignore
Switch to ARB (losartan, valsartan)
🚨 7. Angioedema (LIFE-THREATENING)
Caused by excess bradykinin
Symptoms:
Swollen lips/tongue
Airway swelling
Stridor
❗ KEY POINT:
NOT histamine-mediated → typical allergy meds may NOT work
👉 Priority:
Airway management FIRST
Call rapid response
Prepare for intubation
🧠 8. NCLEX Trap: Angioedema vs Anaphylaxis
Anaphylaxis = histamine → responds to epi/Benadryl
ACE angioedema = bradykinin → focus on airway, not meds
🚫 9. Contraindications (MUST KNOW)
Pregnancy (black box warning)
Causes fetal kidney damage
Use caution in kidney disease
Avoid with potassium supplements
🧂 10. Patient Education (VERY TESTABLE)
Avoid salt substitutes (high in potassium)
Report:
Persistent cough
Swelling of face/lips
Dizziness
💊 11. Heart Failure Combo Therapy
“Triple Therapy” Approach:
ACE inhibitor (↓ afterload)
Beta blocker (↓ heart rate, ↑ filling time)
Loop diuretic (↓ preload, fluid removal)
👉 Together:
Improve cardiac efficiency
Reduce hospitalizations
🔑 12. Big Clinical Takeaways
ACE inhibitors = protect heart + kidneys
Always think:
BP
Potassium
Kidney function
NEVER ignore:
Cough
Swelling
Hypotension
Want to reach out? Send an email to [email protected] or visit SuperNurse.ai
The content presented in The Super Nurse Podcast is for educational purposes only and should not be considered medical advice. The host and creators are not responsible for any clinical decisions made based on this content. Always adhere to your institution’s policies and consult appropriate healthcare professionals when making patient care decisions.