Cardiac and Respiratory Drugs Every Nursing Student Must Know
Cardiac and respiratory medications dominate med-surg exams and NCLEX questions. Learn the class, prototype drug, and the single most tested nursing consideration for each.
High-Priority Cardiovascular Drugs
Beta blockers like metoprolol require you to hold the drug if heart rate drops below 60 or systolic BP falls below 100. Monitor for bradycardia, fatigue, and bronchospasm.
ACE inhibitors such as lisinopril demand monitoring of potassium and creatinine levels. Teach patients about the dry cough side effect and hold immediately if angioedema develops.
ARBs like losartan cause fewer ACE side effects but still require potassium monitoring. These drugs are contraindicated in pregnancy.
Loop diuretics such as furosemide require careful monitoring of potassium, magnesium, BUN, and hearing. Never push IV faster than 20 mg per minute.
Potassium-sparing diuretics like spironolactone carry a hyperkalemia risk. Teach patients to avoid potassium supplements and salt substitutes.
Digoxin requires an apical pulse check for 60 seconds before administration. Hold if heart rate is below 60. Monitor serum levels (0.5-2.0 ng/mL) and potassium carefully.
Antianginal and Anticoagulant Essentials
Nitroglycerin sublingual tablets treat acute angina with one tablet every 5 minutes, up to three doses, then call 911 if no relief. Store in dark glass and watch for headache and hypotension.
IV heparin requires aPTT monitoring at 1.5-2.5 times control. Reverse with protamine. Check for HIT (platelet count drop of 50% or more).
Warfarin targets an INR of 2-3 (or 2.5-3.5 for mechanical valves). Reverse with vitamin K. Teach consistent leafy green intake.
DOACs like apixaban require no routine monitoring. Reverse with andexanet alfa if bleeding occurs.
Respiratory and Other Cardiac Support
Statins like atorvastatin lower cholesterol but require LFT and CK monitoring if muscle pain develops. Teach patients to avoid grapefruit juice.
Calcium channel blockers such as amlodipine treat hypertension and angina. Watch for peripheral edema, headache, and flushing.
Short-acting beta-2 agonists like albuterol serve as rescue inhalers. Side effects include tachycardia, tremor, and hypokalemia. Assess lung sounds before and after use.
Anticholinergic bronchodilators like ipratropium are contraindicated in patients with peanut or soy allergies due to formulation ingredients.
Inhaled corticosteroid/LABA combinations like fluticasone/salmeterol prevent asthma attacks. Teach patients to rinse their mouth after use to prevent thrush.
Leukotriene receptor antagonists like montelukast carry a boxed warning for neuropsychiatric effects.
| Term | Meaning |
|---|---|
| Metoprolol | Beta-1 selective blocker for HTN, MI, HF. Hold for HR <60 or SBP <100. Monitor for bradycardia, fatigue, bronchospasm. |
| Lisinopril | ACE inhibitor. Monitor K+, creatinine. Teach about dry cough; hold for angioedema. |
| Losartan | ARB for HTN. Fewer ACE side effects. Monitor K+. Contraindicated in pregnancy. |
| Furosemide (Lasix) | Loop diuretic. Monitor K+, Mg, BUN, and hearing. IV push slowly (no faster than 20 mg/min). |
| Spironolactone | K+-sparing diuretic used in HF. Risk of hyperkalemia. Teach to avoid K+ supplements and salt substitutes. |
| Digoxin | Check apical pulse for 60 seconds; hold for HR <60. Monitor serum level (0.5-2.0 ng/mL) and K+ (hypokalemia worsens toxicity). |
| Nitroglycerin SL | For acute angina. 1 tab every 5 min × 3, then call 911 if no relief. Store in dark glass. Watch for headache, hypotension. |
| Heparin IV | Monitor aPTT (1.5-2.5× control). Reverse with protamine. Check for HIT (platelet drop ≥50%). |
| Warfarin | Target INR 2-3 (or 2.5-3.5 for mechanical valves). Reverse with vitamin K. Teach consistent intake of leafy greens. |
| Apixaban (Eliquis) | DOAC for afib and DVT. No routine monitoring. Reverse with andexanet alfa. |
| Atorvastatin | Statin for cholesterol. Monitor LFTs and CK if muscle pain. Teach to avoid grapefruit juice. |
| Amlodipine | DHP calcium channel blocker for HTN and angina. Watch for peripheral edema, headache, flushing. |
| Albuterol | Short-acting beta-2 agonist (rescue inhaler). Side effects: tachycardia, tremor, hypokalemia. Assess lung sounds before/after. |
| Ipratropium | Anticholinergic bronchodilator for COPD. Contraindicated in patients with peanut/soy allergy (some formulations). |
| Fluticasone/salmeterol (Advair) | Inhaled corticosteroid/LABA for asthma control. Teach to rinse mouth after use to prevent thrush. |
| Montelukast | Leukotriene receptor antagonist for asthma. Boxed warning for neuropsychiatric effects. |
High-Alert Medications, Insulin, Anticoagulants, Opioids, and Chemo
High-alert drugs are the ones most likely to cause patient harm. These medications receive the heaviest testing on NCLEX. Every nurse must know them cold.
Insulin Types and Administration
Insulin administration requires a second nurse verification on every dose. Regular insulin is the only insulin given intravenously (for DKA). Onset is 30 minutes, peak is 2-3 hours, and duration is 6-8 hours.
NPH insulin is intermediate-acting with onset of 2-4 hours and peak of 4-12 hours. The appearance is cloudy. Roll the vial gently; never shake it.
Long-acting basal insulins like glargine have no pronounced peak. Never mix them with other insulins.
Rapid-acting insulins like lispro begin working in less than 15 minutes. Give within 15 minutes of a meal.
Opioid Medications and Reversal
Morphine requires respiratory rate assessment before administration. Hold if RR is below 12. Monitor blood pressure for hypotension. Treat overdose with naloxone.
Hydromorphone is potent. One milligram IV roughly equals 7 mg IV morphine. This dose confusion is a common error source.
Fentanyl patches treat chronic pain only, not acute pain. Onset is 12-24 hours. Change every 72 hours. Avoid heat sources that accelerate absorption.
Naloxone reverses opioid overdose but may need repeated doses because its duration is shorter than most opioids.
Anticoagulation and Thrombolytics
Low-molecular-weight heparin like enoxaparin is given as a subcutaneous injection in the abdomen. Do not aspirate or rub the injection site. Monitor anti-Xa levels if renal impairment exists.
tPA (alteplase) is a thrombolytic for ischemic stroke within 3-4.5 hours. Exclude hemorrhage first. Monitor neurological status and bleeding carefully.
Chemotherapy High-Alert Drugs
Methotrexate serves as both chemotherapy and a DMARD. Give folic acid to reduce toxicity. Monitor liver function, CBC, and kidney function. It is teratogenic.
Doxorubicin is an anthracycline that causes cardiotoxicity. Monitor ejection fraction. Red urine is harmless but alarming to patients.
Vincristine is a plant alkaloid. Peripheral neuropathy is dose-limiting. Never give intrathecally (fatal error).
Cisplatin is nephrotoxic and ototoxic. Hydrate aggressively and give antiemetics.
Critical Electrolyte Medications
Potassium chloride is never given as an IV push. Maximum peripheral concentration is 10 mEq per 100 mL. Maximum rate is 10 mEq per hour without cardiac monitoring.
IV calcium gluconate treats hyperkalemia, hypocalcemia, and magnesium toxicity. Monitor cardiac rhythm during administration.
| Term | Meaning |
|---|---|
| Regular insulin | Onset 30 min, peak 2-3 hr, duration 6-8 hr. The only insulin given IV (for DKA). Always verify dose with a second nurse. |
| NPH insulin | Intermediate-acting insulin. Onset 2-4 hr, peak 4-12 hr. Cloudy appearance, must be rolled, not shaken. |
| Insulin glargine (Lantus) | Long-acting basal insulin with no pronounced peak. Do not mix with other insulins. |
| Insulin lispro (Humalog) | Rapid-acting insulin. Onset <15 min; give within 15 min of a meal. |
| Morphine | Assess RR before giving; hold for RR <12. Monitor BP for hypotension. Treat overdose with naloxone. |
| Hydromorphone (Dilaudid) | Potent opioid. 1 mg IV roughly equals 7 mg IV morphine. Common dose confusion source. |
| Fentanyl patch | For chronic pain only, not acute. Onset 12-24 hr; change every 72 hr. Avoid heat sources that accelerate absorption. |
| Naloxone (Narcan) | Opioid reversal agent. May need to repeat dose because duration is shorter than most opioids. |
| Enoxaparin (Lovenox) | Low-molecular-weight heparin. SQ injection in abdomen; do not aspirate or rub. Monitor anti-Xa if renal impaired. |
| tPA (alteplase) | Thrombolytic for ischemic stroke within 3-4.5 hr. Exclude hemorrhage first. Monitor neuro status and bleeding. |
| Methotrexate | Chemotherapy and DMARD. Give folic acid to reduce toxicity. Monitor LFTs, CBC. Teratogenic. |
| Doxorubicin | Anthracycline chemotherapy. Cardiotoxic, monitor EF. Causes red urine (harmless). |
| Vincristine | Plant alkaloid chemotherapy. Peripheral neuropathy is dose-limiting. NEVER give intrathecally (fatal). |
| Cisplatin | Platinum chemo. Nephrotoxic and ototoxic. Hydrate aggressively and give antiemetics. |
| KCl (potassium chloride) | Never IV push. Max peripheral concentration 10 mEq/100 mL; max 10 mEq/hr without cardiac monitoring. |
| IV calcium gluconate | Used for hyperkalemia, hypocalcemia, magnesium toxicity. Monitor cardiac rhythm during administration. |
Antibiotics, GI, and Psychiatric Medications
Round out your nursing pharmacology core with the most commonly administered antibiotics, GI drugs, and psychiatric medications.
Common Antibiotics and Monitoring
Amoxicillin treats otitis media, strep throat, and UTIs. Assess for penicillin allergy. A common rash appears in mononucleosis patients.
Third-generation cephalosporins like ceftriaxone can be given IV or IM. Do not mix with calcium-containing solutions in neonates.
Vancomycin IV treats MRSA. Infuse over 60 minutes or longer. Monitor trough levels (10-20 mcg/mL) and creatinine. Red man syndrome occurs with rapid infusion.
Fluoroquinolones like ciprofloxacin carry a boxed warning for tendon rupture. Avoid dairy and antacids within 2 hours of the dose.
Macrolides like azithromycin carry QT prolongation risk. They are often used in community-acquired pneumonia and atypical infections.
Metronidazole treats anaerobic infections and C. difficile. A disulfiram reaction occurs with alcohol. Tell patients to avoid alcohol during treatment and for 48 hours after.
Trimethoprim-sulfamethoxazole treats UTIs and PJP. Sulfa allergy is a contraindication. Increase fluids. Monitor potassium and renal function.
GI Medications
Proton pump inhibitors like omeprazole treat GERD and peptic ulcers. Long-term use increases B12 deficiency, osteoporosis, and C. difficile risk.
5-HT3 antagonists like ondansetron prevent nausea and vomiting. QT prolongation is possible. Can be given PO, IV, or as an orally disintegrating tablet.
Stool softeners like docusate prevent constipation in bedrest or opioid therapy. They take 1-3 days to work.
Psychiatric Medications
Benzodiazepines like lorazepam treat anxiety, seizures, and alcohol withdrawal. Respiratory depression is the critical concern. Reverse with flumazenil if needed.
SSRIs like sertraline need 4-6 weeks for full effect. Monitor for serotonin syndrome and suicidal ideation, especially in teenagers.
Typical antipsychotics like haloperidol cause extrapyramidal symptoms, neuroleptic malignant syndrome, and QT prolongation. Monitor for tardive dyskinesia with long-term use.
Atypical antipsychotics like olanzapine carry metabolic syndrome risk. Monitor weight, glucose, and lipids.
Lithium has a narrow therapeutic range (0.6-1.2 mEq/L). Maintain steady sodium and fluid intake. Monitor thyroid and renal function.
Antiepileptics like phenytoin have a narrow therapeutic range (10-20 mcg/mL). Gingival hyperplasia occurs with long-term use. Push IV slowly to avoid purple glove syndrome.
| Term | Meaning |
|---|---|
| Amoxicillin | Penicillin for otitis media, strep throat, UTIs. Assess for PCN allergy. Common rash in mononucleosis patients. |
| Ceftriaxone (Rocephin) | Third-generation cephalosporin. IV/IM. Do not mix with calcium-containing solutions in neonates. |
| Vancomycin IV | For MRSA. Infuse over ≥60 min. Monitor trough (10-20 mcg/mL) and creatinine. Red man syndrome with rapid infusion. |
| Ciprofloxacin | Fluoroquinolone. Boxed warning for tendon rupture. Avoid dairy and antacids within 2 hr of dose. |
| Azithromycin (Z-pak) | Macrolide. QT prolongation risk. Often used in CAP and atypical infections. |
| Metronidazole (Flagyl) | For anaerobic infections and C. diff. Disulfiram reaction with alcohol, avoid alcohol during and 48 hr after. |
| Sulfamethoxazole-trimethoprim (Bactrim) | For UTI and PJP. Sulfa allergy contraindication. Increase fluids. Monitor K+ and renal function. |
| Omeprazole | PPI for GERD and peptic ulcers. Long-term use: B12 deficiency, osteoporosis, C. diff. |
| Ondansetron (Zofran) | 5-HT3 antagonist antiemetic. QT prolongation. Can be given PO, IV, or ODT. |
| Docusate | Stool softener. For constipation prevention in bedrest or opioid therapy. Takes 1-3 days. |
| Lorazepam (Ativan) | Benzodiazepine for anxiety, seizures, alcohol withdrawal. Respiratory depression. Reverse with flumazenil. |
| Sertraline (Zoloft) | SSRI. 4-6 weeks for full effect. Monitor for serotonin syndrome and suicidal ideation, especially in teens. |
| Haloperidol (Haldol) | Typical antipsychotic. EPS, NMS, QT prolongation. Monitor for tardive dyskinesia with long-term use. |
| Olanzapine | Atypical antipsychotic. Metabolic syndrome risk, monitor weight, glucose, lipids. |
| Lithium | Narrow therapeutic range (0.6-1.2 mEq/L). Maintain steady sodium and fluid intake. Monitor thyroid and renal function. |
| Phenytoin (Dilantin) | Antiepileptic. Narrow therapeutic range (10-20 mcg/mL). Gingival hyperplasia; IV push slowly to avoid purple glove syndrome. |
How to Study pharmacology nursing Effectively
Mastering pharmacology nursing requires the right study approach, not just more hours. Research in cognitive science shows that three techniques produce the best learning outcomes: active recall, spaced repetition, and interleaving.
Active recall means testing yourself rather than re-reading. Spaced repetition reviews material at scientifically-optimized intervals. Interleaving mixes related topics rather than studying one in isolation. FluentFlash is built around all three. When you study pharmacology nursing with our FSRS algorithm, every term is scheduled for review at exactly the moment you are about to forget it.
Why Passive Review Fails
The most common mistake students make is relying on passive review methods. Re-reading notes, highlighting textbook passages, or watching lecture videos feels productive. Studies show these methods produce only 10-20% of the retention that active recall achieves.
Flashcards force your brain to retrieve information. This strengthens memory pathways far more than recognition alone. Pair flashcards with spaced repetition scheduling, and you can learn in 20 minutes daily what would take hours of passive review.
A Practical Study Plan
- Create 15-25 flashcards covering the highest-priority concepts from your lecture
- Review them daily for the first week using FSRS scheduling
- As cards become easier, intervals automatically expand from minutes to days to weeks
- Stay focused on material at the edge of your knowledge
- After 2-3 weeks of consistent practice, pharmacology nursing concepts become automatic
Study Mode Variety
Use multiple study modes to strengthen recall. Flip cards, answer multiple-choice questions, and write responses to the same concept. This variation builds flexible memory that works during exams when the question format may differ from your flashcards.
Track your progress and identify weak topics for focused review. Daily practice beats marathon sessions. The research is clear: 20 minutes of daily study produces better retention than 2 hours once a week.
- 1
Generate flashcards using FluentFlash AI or create them manually from your notes
- 2
Study 15-20 new cards per day, plus scheduled reviews
- 3
Use multiple study modes (flip, multiple choice, written) to strengthen recall
- 4
Track your progress and identify weak topics for focused review
- 5
Review consistently, daily practice beats marathon sessions
Why Flashcards Work Better Than Other Study Methods for pharmacology nursing
Flashcards aren't just for vocabulary. They are one of the most research-backed study tools for any subject, including pharmacology nursing. The reason comes down to how memory works.
When you read a textbook passage, your brain stores that information in short-term memory. Without retrieval practice, it fades within hours. Flashcards force retrieval, which transfers information from short-term to long-term memory.
The Testing Effect
The testing effect, documented in hundreds of peer-reviewed studies, shows flashcard users outperform re-readers by 30-60% on delayed tests. This isn't because flashcards contain more information. Retrieval strengthens neural pathways in a way passive exposure cannot. Every time you successfully recall a pharmacology nursing concept from a flashcard, you make that concept easier to recall next time.
FSRS and Retention Gains
FluentFlash amplifies this effect with the FSRS algorithm, a modern spaced repetition system. It schedules reviews at mathematically-optimal intervals based on your actual performance. Cards you find easy get pushed further into the future. Cards you struggle with come back sooner.
Over time, this builds remarkable retention with minimal time investment. Students using FSRS-based systems typically retain 85-95% of material after 30 days. Passive review alone produces only roughly 20% retention.