RNPedia PNLE Nursing Practice 5 Test 1 Practice

The main idea is balancing oxygen delivery with the risk of CO2 retention in COPD. In many COPD patients, especially those with chronic CO2 retention, giving too much oxygen can blunt the drive to breathe and worsen ventilation-perfusion mismatch, leading to higher CO2 levels. Keeping SpO2 in the lower yet safe range ensures tissues stay adequately oxygenated without suppressing breathing or increasing hypercapnia. An SpO2 target of 88-92% is chosen for this reason. It provides enough oxygenation for most patients while minimizing the chance that oxygen therapy will cause CO2 retention or reduce respiratory drive. Higher targets, such as 95-100% or even above 92%, can raise the risk of CO2 retention in susceptible individuals, making 88-92% the more appropriate choice for many COPD patients. Monitor clinically and adjust as needed to avoid both hypoxemia and hypercapnia.