Capnography would most likely be used in which of the following situations?
1. A client in intensive care has been intubated.
2. A client in the emergency department arrives with circumoral cyanosis.
3. A client with a history of chronic obstructive pulmonary disease is admitted for increased difficulty breathing.
4. An ambulance arrives with a client following a house fire.
A client in intensive care has been intubated.
Rationale: Capnography indicates the presence of carbon dioxide and is used to assist in determining whether an endotracheal tube is correctly placed following intubation. The clients with circumoral cyanosis and chronic obstructive pulmonary disease would at least require pulse oximetry. The client with an inhalation injury requires an arterial blood gas.
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