Assessment and Stratification

Consider the following example: A 23-year-old man is being evaluated in the emergency department for severe pneumonia. His respiratory rate is 38 bpm and he is using accessory breathing muscles. An ABG was done with values as shown on the adjacent report.

See if you can use Winter’s formula here to find the predicted PCO2.

Predicted PaCO2 = 2 x [HCO3]/10 + 1 ± 0.3