during morning assessment, a nurse assesses four clients. which client is the priority for follow up? an 84-year-old client with heart failure who's on telemetry and 2 l/minute of oxygen a 42-year-old client who has left lower lobe pneumonia and an i.v. line a 73-year-old client who has pneumonia with coarse crackles, is receiving 2 l/minute of oxygen, and has an i.v. line a 48-year-old client with chronic obstructive pulmonary disease with occasional atrial fibrillation