Respiratory Therapist

Answer: D - The sensation of being short of breath is referred to as dyspnea or being dyspneic.

The definition of orthopnea is a patient who can breathe easier when upright than reclining. Tachypnea is rapid breathing, not a symptomatic complaint. If a patient has apnea, this is the absence of breathing, commonly found in patients with sleep apnea at night.