Certified Paramedic Response (CPR) Examination

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A paramedic is treating a 58-year-old male in cardiac arrest. After endotracheal intubation, waveform capnography shows a persistent, flat waveform with an ETCO2 value of 0 mmHg despite effective chest compressions. What is the MOST likely cause of this finding?

Severe bronchoconstriction The endotracheal tube is correctly placed in the trachea Esophageal intubation Return of spontaneous circulation (ROSC)

Correct Answer:

Esophageal intubation

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