A patient arrives in the emergency department via ambulance following rescue from a house fire.The instrument that would be most appropriate to assist the respiratory therapist in assessing this patient's oxygenation status is which of the following?

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Laboratory CO-oximeters measure four types of hemoglobin: oxyhemoglobin (O₂Hb),deoxygenated hemoglobin (HHb),carboxyhemoglobin (COHb),and methemoglobin (MetHb).This is beneficial for patients who are suffering from smoke inhalation.The CO-oximeter provides the actual O₂Hb and the COHb.Carbon monoxide produces an erroneously high oxygen saturation measured by pulse oximeter (SpO₂).Therefore,if smoke inhalation is suspected,a CO-oximeter should be used to evaluate the oxygen saturation.Capnography is the measurement of carbon dioxide concentrations in exhaled gases and is used to assess proper airway placement.Calorimetry allows the clinician to estimate energy expenditure from measurements of oxygen consumption ( 11ea68f7_d695_97a3_b0a4_c7e0d5b4c4bd_TB1877_11 O₂)and carbon dioxide production ( 11ea68f7_d695_97a4_b0a4_d38ed34edbc5_TB1877_11 CO₂).This measurement may be useful when weaning a patient from mechanical ventilation.

A Patient Arrives in the Emergency Department Via Ambulance Following