Following three days of nausea, vomiting, and diarrhea, an older adult is admitted with severe dehydration. After two attempts, the nurse secured venous access using a 24-gauge IV catheter and began infusing 0.9% normal saline at 150 mL/hour. Minutes later, the client reports pain at the IV site. Which intervention should the nurse implement first?

Choice A reason: Discontinuing the nasal cannula is inappropriate, as 94% SpO₂ indicates mild hypoxemia from pneumonia, requiring oxygen to support alveolar diffusion. The rash likely results from cannula pressure, not oxygen delivery. Padding addresses the rash without compromising respiratory support, ensuring continued therapy.

Choice B reason: Decreasing to 1 L/minute may worsen hypoxemia in pneumonia, where inflamed alveoli impair gas exchange (SpO₂ 94%). The rash is from mechanical irritation, not flow rate. Padding relieves pressure, maintaining oxygen delivery to improve saturation, making flow reduction counterproductive to respiratory needs.

Choice C reason: Applying lubricant reduces friction but not pressure causing the red macular rash from prolonged cannula contact. Lubricants risk aspiration. Padding alleviates pressure points, preventing skin breakdown while maintaining oxygen for pneumonia, addressing the rash’s mechanical cause more effectively than lubrication.

Choice D reason: Placing padding around the cannula tubing relieves pressure on the cheek, preventing skin breakdown from the red macular rash. This maintains oxygen at 3 L/minute, critical for pneumonia’s hypoxemia, where inflamed alveoli reduce oxygen diffusion. Padding ensures skin integrity and respiratory support, addressing both issues effectively.

Choice A reason: Increased JVD and pedal edema indicate fluid overload in heart failure, where reduced cardiac output causes venous congestion. Assessing breathing for dyspnea or crackles detects pulmonary edema, as fluid backs into alveoli, impairing gas exchange. This urgent finding guides interventions like diuretics, critical before reporting.

Choice B reason: Palpating pedal pulses assesses arterial flow, not fluid overload causing JVD and edema, which are venous issues in heart failure. Pulses may be normal despite congestion. Breathing changes indicate pulmonary edema, a life-threatening complication, making this assessment more critical for detecting acute decompensation.

Choice C reason: Assessing calf inflammation may detect thrombosis, a heart failure risk, but JVD and edema suggest fluid overload, not clotting. Breathing changes are more urgent, indicating pulmonary edema from alveolar fluid, requiring immediate intervention to prevent respiratory failure, unlike inflammation, which is less immediate.

Choice D reason: Inspecting peripheral vein distention confirms venous congestion but is less critical than breathing assessment. In heart failure, fluid overload risks pulmonary edema, where alveolar fluid causes dyspnea. Monitoring breathing detects this severe complication, prioritizing intervention to ensure oxygenation over additional venous assessment.