What is the primary use of Atropine in cardiac care?
Increases heart rate; used for symptomatic bradycardia (sinus bradycardia, AV block). Desired effect is tachycardia, so don’t call the provider when HR rises.
Which drug class lowers HR and BP, used in sinus tachycardia and HF, but contraindicated in asthma if non-selective?
Beta Blockers (e.g., Metoprolol, Carvedilol, Atenolol). Monitor HR/BP. Non-selective (Propranolol) worsen asthma.
What’s the first-line med for stable SVT and also used in A-fib/flutter?
Calcium Channel Blockers (Verapamil, Nifedipine, Diltiazem). They slow HR and reduce afterload. Not ideal in severe HF due to contractility drop.
Which drug is given rapid IV push to “reset” the heart in SVT?
Adenosine. 6 mg IV push (then 12 mg if needed) followed by 20 mL flush. Warn patient they’ll feel terrible briefly; requires crash cart.
Which antiarrhythmic works on ventricular channels only, not atrial rhythms?
Lidocaine. Used for PVCs and V-tach. Monitor neuro changes (confusion, seizures). Therapeutic level: 1.5–5 mcg/mL.
What’s the antidote for severe Lidocaine toxicity?
Lipid emulsion therapy. Key for seizures or CNS changes.
Which drug treats both ventricular rhythms and atrial fibrillation/flutter?
Amiodarone. Used for PVCs, V-tach, A-fib/flutter. Potent antiarrhythmic.
Which drug do “all dead people get” in cardiac arrest?
Epinephrine. 1 mg IV every 3–5 min for pulseless V-tach, V-fib, asystole/PEA. Concentration 1:10,000 IV.
What’s the antidote for Heparin toxicity?
Protamine sulfate. Monitor platelets for HIT; rotate SQ sites, don’t expel air bubble.
What lab must be monitored for Warfarin therapy?
INR (goal 2–3). Antidote: Vitamin K or FFP. Maintain consistent vitamin K diet; watch for bleeding.
What vital sign must be checked before giving Digoxin?
Apical pulse (hold if <60). Also check K+ (hold if <3.5 or >5.0) and Dig level. Toxicity signs: halo vision, N/V, bradycardia.
Which cardiac drug causes a persistent dry cough and angioedema, especially in African Americans?
ACE inhibitors (e.g., Lisinopril, Enalapril). Also risk of hyperkalemia and hypotension after first dose.
Which type of diuretic requires potassium-rich diet and slow IV push (≤20 mg/min)?
Loop diuretics (e.g., Furosemide). Risk of hypokalemia. Teach high-K foods.
What is the main adverse effect of Spironolactone?
Hyperkalemia (potassium-sparing). Monitor K+ closely.
What drug class is an alternative for ACE inhibitor–intolerant patients?
ARBs (e.g., Losartan). Similar action, block angiotensin II, reduce afterload.
Which drug is specifically approved in combination for African American patients with HF?
Isosorbide dinitrate + Hydralazine. Lowers preload and afterload, improves outcomes.
Which IV drug is given in acute pulmonary edema to reduce anxiety and venous return?
Morphine IV. Also decreases respiratory distress. Use cautiously.
What’s the first-line treatment for angina?
Nitroglycerin SL. Take 1 tab q5min up to 3 doses. Call 911 if chest pain persists after 1st dose. Contraindicated with sildenafil.
Which cardiac med causes tinnitus at toxic levels?
Aspirin (salicylate toxicity). Take with food. Antidote: sodium bicarbonate to alkalinize urine.
Which two therapies are cardioprotective in hyperkalemia?
IV insulin with dextrose (shifts K+ into cells) and IV calcium gluconate (stabilizes cardiac membrane).
Which medication class is first-line for acute asthma relief and exercise-induced asthma?
Short-Acting Beta Agonists (SABAs) like Albuterol, Salbutamol, Levalbuterol. Take 30 min before exercise. Side effects: tremors, tachycardia.
Which SABA is preferred in patients with cardiac disease?
Levalbuterol (Xopenex). Causes fewer cardiac side effects compared to Albuterol.
Which anticholinergic can be used as rescue for asthma and maintenance for COPD?
Ipratropium (Atrovent). Short-acting muscarinic antagonist (SAMA).
Which corticosteroid routes are used for acute asthma exacerbations?
IV or IM corticosteroids (e.g., Methylprednisolone, Prednisone). Reduce inflammation rapidly.