After receiving back-to-back albuterol nebulizers for status… | MyMerci
Medical EmergenciesPA
Question
After receiving back-to-back albuterol nebulizers for status asthmaticus, a client now has HR 145, fine tremor, and serum K+ of 2.9 mEq/L. Which is the priority nursing action?
1Switch to oral albuterol tablets to reduce side effects
2Notify the provider, anticipate IV potassium replacement, and continue cardiac monitoring for arrhythmia✓ Correct answer
3Administer additional albuterol to continue bronchodilation
4Discontinue all asthma medications until potassium normalizes
Explanation
Correct (2): High-dose beta-2 agonists shift potassium intracellularly, causing hypokalemia with risk of arrhythmias (especially with concurrent diuretics or digoxin). Notify provider, anticipate IV potassium replacement, continuous ECG. Tachycardia and tremor are expected with high-dose beta-2 stimulation. (1) More albuterol worsens hypokalemia. (3) Oral tablets have systemic side effects without faster benefit. (4) Asthma control still required; just adjust dose.
In-depth explanation
Memory Tip Beta-2 agonist overdose = "Tachy + Tremor + Low K." Beta-2 also causes mild HYPERglycemia (insulin and glucose shift). CPG Monitor K+ every 2-4h during continuous nebulizer therapy.
Clinical scenario
Scenario 32-year-old male in status asthmaticus receiving back-to-back albuterol nebulizers × 3. Now HR 145, fine tremor, serum K+ 2.9 mEq/L, on continuous cardiac monitor.
Key concepts
Beta-2 agonist hypokalemia — Potassium shift into cells with intense beta-2 stimulation; common with high-dose albuterol.
Status asthmaticus — Severe asthma exacerbation unresponsive to initial therapy; requires aggressive treatment.