This study evaluates the effectiveness of transcutaneous blood gas monitoring (TcPCO₂ and TcPO₂) in detecting carbon dioxide and oxygen levels in pediatric cardiac surgery patients after extubation. It found a strong correlation between TcPCO₂ and arterial PaCO₂, suggesting transcutaneous CO₂ can be a reliable, non-invasive monitoring tool. However, TcPO₂ showed less precision and cannot substitute PaO₂.