A patient with severe chronic obstructive pulmonary disorder (COPD) is receiving 3 liters per minute of oxygen via nasal canal. Which oxygen saturation indicates respiratory support is adequate?

A patient is found to have hypertension. Which conditions, if present in the patient, indicate the patient has had hypertension for years without being diagnosed? Select all that apply.

 The nurse is the first responder after a child is pulled unresponsive from the pool. There is no pulse and no breathing. The nurse sends someone for the AED, instructs another person to call 911, and begins chest compressions. By looking transversely at the chest, select the depth to which the nurse compresses the chest, if each line represents an inch of compression.