The correct answer is A. Oxygen.
This patient is presenting with:
Tachycardia (P 170) with irregular rhythm
Chest pain and shortness of breath
Hypoxia (SpO₂ 89% on room air)
The most immediate life threat is hypoxia, which must be corrected first according to the ABCs (Airway, Breathing, Circulation) priority used in NREMT standards.
Oxygen is indicated because:
SpO₂ is below 94%, indicating inadequate oxygenation.
The patient is symptomatic with respiratory and cardiac complaints.
NREMT-aligned EMT guidelines emphasize:
“Administer oxygen to patients with suspected hypoxia or SpO₂ less than 94%.”
“Ensure adequate oxygenation as a priority in patients with respiratory distress or cardiac compromise.”
Why the other options are incorrect:
B. Albuterol: Used for bronchospasm (e.g., asthma, COPD). This patient’s problem is cardiac rhythm disturbance, not bronchoconstriction.
C. Epinephrine: Indicated for anaphylaxis or cardiac arrest; it would increase heart rate, worsening this patient’s tachycardia.
D. Nitroglycerin: May be considered for chest pain of cardiac origin, but oxygen takes priority due to hypoxia. Also, nitroglycerin requires careful assessment and is not the first intervention when SpO₂ is critically low.
Exact Extracts (NREMT-aligned EMT educational references):
“Administer oxygen to any patient with signs of hypoxia.”
“SpO₂ less than 94% indicates the need for supplemental oxygen.”
“Follow the ABCs: airway, breathing, and circulation as the highest priority.”
Clinical Priority Summary:
Even though the patient has a cardiac issue, oxygenation must be corrected first, making oxygen the most appropriate immediate medication.
[References:, NREMT EMT Education Standards – Airway, Respiration & Ventilation, NREMT National Continued Competency Program (NCCP) – Patient Assessment & Management, AAOS Emergency Care and Transportation of the Sick and Injured (NREMT-aligned), , , , ]
