Our institution recently went live with the Alaris PCA and end-tidal CO2 (EtCO2) modules. We opted to implement the EtCO2 pause protocol (which will automatically pause the patients PCA when the RR drops below a pre-defined value).
We started out conservatively with an 8 bpm lower limit for adults. With this value, we have seen a lot of nuisance alarms and inappropriate pauses based on the actual patient presentation.