Abstract
We investigated the correlation between arterial and end-tidal pCO2 in 17 children during intensive care. The indications for using capnometry were noninvasive monitoring of ventilation after cardiac surgery or during complicated course of illness or for control of intended hyperventilation. We found a good correlation between arterial and end-tidal pCO2 in the overall patient population (r = 0.82), but the relationship varied widely from patient to patient. There was only a weak correlation (r = 0.44) in pCO2 over 45 mm Hg. Hyperventilation could be identified in 64.2%, whereas hypoventilation was correctly indicated in only 23%.
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