Respiratory Failure Escalation

Respiratory failure is failure of oxygenation, ventilation, or both. A patient may have a dangerously low oxygen level, an inadequate ability to remove carbon dioxide, or a combination of the two. The saturation monitor can look acceptable while ventilation is failing, particularly after supplemental oxygen has been started. A practical escalation ladder is therefore not simply low-flow oxygen, then high-flow oxygen, then non-invasive ventilation, then intubation. First identify the physiological problem, set a safe oxygen target, and correct the cause. Then ask whether the patient is improving. A rising oxygen requirement, persistent work of breathing, worsening acidosis, exhaustion, or reduced alertness means the current level of support is not enough. For example, a patient with COPD may have an SpO2 of 99% after uncontrolled oxygen is applied but become increasingly drowsy. The reassuring saturation does not make the treatment successful; it may be masking worsening hypercapnia. The next priority is an arterial blood gas, controlled oxygen titration, and urgent assessment for bilevel NIV or invasive ventilation. The RPN contribution is to recognize the pattern early, apply authorized immediate measures, obtain...