A capnografia na monitorização e condução da parada cardiorrespiratória em anestesia geral

Veterinary anesthetic monitoring has increasingly incorporated continuous monitoring techniques that enhance patient safety. In this context, capnography stands out by providing real-time information on ventilation, perfusion, and anesthetic circuit function through analysis of the capnographic waveform and measurement of end-tidal carbon dioxide (ETCO₂). This article reviews the applications of capnography for anesthetic monitoring and the management of cardiopulmonary arrest during general anesthesia, with particular emphasis on ETCO₂ as an indicator of the quality of cardiopulmonary resuscitation, perfusion achieved through chest compressions, and return of spontaneous circulation. An abrupt decrease in ETCO₂ may indicate hemodynamic collapse, whereas a sustained increase suggests improved perfusion and a possible return of spontaneous circulation. Therefore, continuous interpretation of ETCO₂ supports rapid clinical decision-making, standardizes resuscitation procedures, and enhances anesthetic safety in veterinary medicine.