The most common indication for intrahospital transport of mechanically ventilated patients is to acquire diagnostic procedures at a location other than the intensive care setting.

The medial margin of the left lung is indented where?

A) Splenic notch B) Cardiac notch C) Pulmonary notch D) Aortic notch

You are the first on the scene of a 72-year-old patient in cardiac arrest. You have your medical supply kit, oxygen, and an AED. At least 4 to 5 minutes of high-quality CPR has been provided by the police officer who arrived before you. You have confirmed an open airway, apnea, and pulselessness. Which of the following should you do next?

A) Apply the defibrillator pads and shock as indicated. B) Contact medical direction before taking any action. C) Perform one-rescuer CPR until additional personnel arrive. D) Perform bag-valve-mask ventilations with supplemental oxygen for 30 seconds before applying the defibrillator pads.