Three minutes after witnessing a cardiac arrest, one member of your team inserts an endotracheal tube while another performs continuous chest compressions. During subsequent ventilation, you notice the presence of a waveform on the capnography screen and a PETCO2 level of 8 mm Hg. What is the significance of this finding?
A. Chest compressions may not be effective.
B. The endotracheal tube is no longer in the trachea.
C. The patient meets the criteria for termination of efforts.
D. The team is ventilating the patient too often (hyperventilation).
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