Which type of research can help determine whether a procedure, drug, treatment, or similar strategy actually improves patient outcomes?

Nvg _______________________

Fill in the blank(s) with correct word

You are caring for a 46-year-old male patient who is unresponsive. Which one of the following statements made by your partner indicates the need to immediately stop suctioning the patient's airway and resume positive pressure ventilation?

A) "He is starting to have gurgling respirations." B) "His heart rate is 48 beats per minute." C) "You have been suctioning now for 10 seconds." D) "He is biting down on the rigid-tip catheter."