What is the priority nursing intervention for a patient with a nasal cannula?

Ensuring that the nasal cannula fits properly and assessing oxygen saturation are critical components of care for a patient receiving oxygen therapy. A proper fit is essential to maintain adequate oxygen delivery and prevent discomfort or skin breakdown around the ears and nostrils. If the cannula is not positioned correctly, it can cause inadequate oxygenation or increase the risk of nasal mucosal dryness.

Monitoring oxygen saturation provides an objective measure of how well oxygen is being delivered to the patient. This is crucial, particularly for patients with respiratory conditions, as their oxygen needs may vary. By assessing oxygen saturation levels using a pulse oximeter, the nurse can determine whether the current oxygen delivery method is effective or if adjustments need to be made.

In contrast, routine replacement of the cannula every 4 hours may not be necessary if the cannula remains clean and intact. Monitoring only blood pressure does not adequately address the respiratory needs of the patient, which is the primary focus when using a nasal cannula. Providing humidified oxygen might be beneficial for certain patients, especially those on high-flow oxygen, but it is not universally required for all patients using a nasal cannula, especially at lower flow rates.