Figure 2. Timeline of the study, time-points for pain assessment and rescue analgesia.

Pain was evaluated with NS, numeric; SDS, simple descriptive; VAS, visual analog; UFEPS, UNESP-Botucatu multidimensional feline pain assessment scale, UFEPS-SF, short version of the UNESP-Botucatu scale, and Glasgow CMPS-Feline, Glasgow feline multidimensional pain scale. (A) Surgery Group. Time points for pain assessment varied according to the drug used for rescue analgesia. (B) Clinical Group. All cats received rescue analgesia. (C) Control Group. *In the case of signs of dysphoria, rescue analgesia was not performed. **Evaluation was not performed in cases when cats were painless and comfortable at the previous time point. ¹ Reevaluation after 60 min. ² Reevaluation after 90 min. ³ If procedural sedation was required for further diagnostics, pain scores after the administration of sedatives were not included in the analysis of construct validity.