Therapeutic Duplication - Pharmacy Technician Certification Exam Ptce
- Identify the duplication: atorvastatin plus rosuvastatin.
- Statin duplication. Atorvastatin and rosuvastatin both inhibit HMG-CoA reductase, causing overlapping cholesterol reduction and increased risk of myopathy or rhabdomyolysis.
- Identify the duplication: aspirin daily plus clopidogrel without a clear indication.
- Antiplatelet duplication (dual antiplatelet therapy). Aspirin and clopidogrel both inhibit platelet aggregation via different pathways, but without indication, this overlaps antiplatelet effects and increases bleeding risk.
- Identify the duplication: lisinopril plus losartan used together routinely.
- RAAS duplication (ACE inhibitor + ARB). Combining an ACE inhibitor with an ARB redundantly inhibits the renin-angiotensin-aldosterone system, increasing risks such as hyperkalemia without routine justification.
- Which duplication is present: apixaban plus rivaroxaban?
- DOAC duplication. Apixaban and rivaroxaban are both direct oral anticoagulants targeting factor Xa, leading to redundant inhibition of coagulation and elevated hemorrhage potential.
- Which duplication is present: diltiazem plus verapamil?
- Non-dihydropyridine calcium channel blocker duplication. Diltiazem and verapamil both inhibit calcium channels in a non-dihydropyridine manner, leading to redundant effects on heart rate and conduction with risk of bradycardia.
- Which duplication is present: zolpidem plus eszopiclone?
- Non-benzodiazepine hypnotic duplication (Z-drugs). Zolpidem and eszopiclone both act as non-benzodiazepine hypnotics on GABA receptors, leading to redundant sleep induction and potential for next-day impairment.
- Which duplication is present: amlodipine plus nifedipine ER?
- Dihydropyridine calcium channel blocker duplication. Amlodipine and nifedipine ER both act as dihydropyridine calcium channel blockers, providing overlapping vasodilation and risking excessive hypotension.
- Which duplication is present: albuterol inhaler plus levalbuterol inhaler?
- SABA duplication. Albuterol and levalbuterol both activate short-acting beta-2 receptors for bronchodilation, causing redundant asthma relief and risks like tachycardia.
- Which duplication is present: losartan plus valsartan?
- ARB duplication. Losartan and valsartan both block angiotensin II receptors, causing overlapping antihypertensive effects and potential for additive adverse reactions like hypotension.
- Identify the duplication: hydrochlorothiazide plus chlorthalidone.
- Thiazide diuretic duplication. Hydrochlorothiazide and chlorthalidone both promote sodium and water excretion via thiazide mechanisms, causing redundant diuresis and electrolyte imbalances like hypokalemia.
- Which duplication is present: metoprolol plus carvedilol?
- Beta-blocker duplication. Metoprolol and carvedilol both block beta-adrenergic receptors, resulting in redundant heart rate and blood pressure control with amplified side effects like bradycardia.
- Which duplication is most concerning: lisinopril plus enalapril?
- ACE inhibitor duplication. Both lisinopril and enalapril inhibit angiotensin-converting enzyme, leading to redundant blood pressure lowering and heightened risk of hyperkalemia or renal issues.
- Which duplication is present: famotidine plus cimetidine?
- H2-receptor antagonist duplication. Famotidine and cimetidine both block histamine-2 receptors in the stomach, resulting in redundant acid reduction and potential for drug interactions or confusion.
- Which duplication is present: escitalopram plus venlafaxine used together routinely?
- Serotonergic antidepressant duplication (SSRI + SNRI). Escitalopram (SSRI) and venlafaxine (SNRI) both enhance serotonergic transmission, causing redundant mood stabilization but heightening serotonin-related adverse effects.
- Identify the duplication: omeprazole plus pantoprazole.
- Proton pump inhibitor duplication. Omeprazole and pantoprazole both irreversibly inhibit the proton pump in gastric cells, causing overlapping acid suppression and risks like hypomagnesemia.
- Which duplication is present: warfarin plus apixaban?
- Therapeutic anticoagulant duplication. Warfarin and apixaban both prevent blood clot formation through different mechanisms, but their combined use overlaps anticoagulation therapy, raising bleeding risks.
- Which duplication is present: celecoxib plus meloxicam?
- NSAID duplication (COX-2 selective plus NSAID). Celecoxib selectively inhibits COX-2 while meloxicam has partial selectivity, but both provide NSAID effects, leading to redundant pain relief and cardiovascular risks.
- Which duplication is present: ibuprofen plus naproxen?
- NSAID duplication. Ibuprofen and naproxen both inhibit cyclooxygenase enzymes non-selectively, resulting in overlapping anti-inflammatory effects and amplified gastrointestinal toxicity.
- Identify the duplication: lorazepam plus alprazolam.
- Benzodiazepine duplication. Lorazepam and alprazolam both enhance GABA activity via benzodiazepine receptors, resulting in overlapping anxiolytic effects and risks of sedation or dependence.
- Identify the duplication: sertraline plus fluoxetine.
- SSRI duplication. Sertraline and fluoxetine both selectively inhibit serotonin reuptake, leading to overlapping antidepressant effects and increased risk of serotonin syndrome.
- Identify the duplication: furosemide plus bumetanide.
- Loop diuretic duplication. Furosemide and bumetanide both inhibit the Na-K-2Cl cotransporter in the loop of Henle, resulting in overlapping potent diuresis and risks such as ototoxicity.
- Identify the duplication: hydrocodone-acetaminophen plus oxycodone-acetaminophen.
- Duplicate opioid plus duplicate acetaminophen exposure. These combinations overlap opioid analgesia while exceeding safe acetaminophen limits, increasing risks of respiratory depression and hepatotoxicity.
- Identify the duplication: Advair (fluticasone/salmeterol) plus Symbicort (budesonide/formoterol).
- Duplicate ICS/LABA therapy. Advair and Symbicort both combine an inhaled corticosteroid with a long-acting beta agonist, providing overlapping asthma control and risks of thrush or tachycardia.
- Which duplication is present: spironolactone plus eplerenone?
- Aldosterone antagonist duplication. Spironolactone and eplerenone both antagonize aldosterone receptors, leading to redundant potassium-sparing diuresis and heightened risk of hyperkalemia.