You respond to a residence for a 40-year-old female who was assaulted by her hband; the scene has been secured by law enforcement. Upon your arrival, you find the patient lying supine on the floor in the kitchen. She is semiconscio with severely labored breathing. Further assessment reveals a large bruise to the left anterior chest, JVD, and unilaterally absent BS. As your partner is supporting her ventilations, you should:
A. insert an oropharyngeal airway.
B. obtain a set of baseline vital signs.
C. immediately request ALS support.