Final answer:
The special test for someone with thermal injury/smoke inhalation is a Carboxyhemoglobin test to check for carbon monoxide poisoning. Spirometry is used to detect a decrease in lung capacity but isn't the primary test for smoke inhalation.
Step-by-step explanation:
For someone with a thermal injury/smoke inhalation, the special test that would be done is c) Carboxyhemoglobin test. This test measures the level of carboxyhemoglobin in the blood, which is a compound formed by the binding of carbon monoxide to hemoglobin. It is elevated in cases of carbon monoxide poisoning, which can be a concern in smoke inhalation injuries.
Spirometry, as shown in the referenced video, is used to assess lung function and can help detect b) a decrease in the capacity of the lungs to hold air. This is relevant for conditions such as chronic obstructive pulmonary disease (COPD) or asthma.
An echocardiogram is typically used to assess heart function, arterial blood gas analysis evaluates the levels of oxygen and carbon dioxide in the blood, and fiberoptic bronchoscopy allows for the direct visualization of the airways. However, in the context of smoke inhalation, the most critical initial test would be evaluating for carbon monoxide exposure through a carboxyhemoglobin test.