the client who has an immobilizer on the arm reports shortness of breath following ambulation to the bathroom. the nurse notes the client's pulse increased from 82 to 124 beats per minute, respirations increased from 16 to 24 breaths per minute, and blood pressure is 90/50 mm hg. the nurse makes the nursing diagnosis of activity intolerance. what are the client's defining characteristics for this diagnosis? select all that apply.