Aclient develops subcutaneous emphysema after the surgical creation of a tracheostomy. what assessment by the nurse most readily detects this complication?

There are choices for this question namely:

Palpating the neck or face
Evaluating the blood gases
Auscultating the lung fields
Reviewing the chest x-ray film

A patient with subcutaneous emphysema commonly presents with crepitations. Crepitations are described as "popping a bubble wrap" upon palpation of the neck and face. This corresponds to the escape of air from the airways (in this case, from the tracheostomy) to the subcutaneous tissue. 

As what he you go get the hot dog ; )