[Comparison of two kinds of pain assessment tools for ICU patients in oral and maxillofacial surgery].

PURPOSE: To explore the validity of two kinds of pain assessment tools for ICU patients after oral and maxillofacial surgery.

METHODS: A total of 30 ICU patients post oral and maxillofacial surgery were included, and the patients' pain was assessed by 2 independent research nurses with 2 kinds of pain assessment tools (CPOT and BPS) at the same time under non-pain stimulations and pain stimulation (non-invasive blood pressure measurement and closed endotracheal intubation suction). The repeated assessment point included rest state, during intervention, 20 minutes after intervention. For conscious patients, pain score was also obtained by 1 researcher with numerical rating scale (NRS) after closed endotracheal intubation suction. The data were analyzed by reliability and validation test using SPSS 17.0 software package.

RESULTS: The internal consistency of CPOT and BPS was 0.809 and 0.878, respectively. In the analysis of discriminant validity, the pain stimulations scores of 2 scales were significantly higher than those in other assessment point (P<0.05); In the criterion validity, Spearman correlation coefficient between CPOT score and NRS score was 0.542, 0.461 between BPS score and NRS score during pain stimulation process. The results of sensitivity and specificity analysis revealed that when the CPOT score was cut by 3.5 point, the sensitivity and specificity were 55% and 96.7%, respectively, the area under ROC curve (AUC) was 0.799; when the BPS score was cut by 7 point, the sensitivity and specificity respectively were 50% and 100%, respectively, the area under ROC curve (AUC) was 0.743.

CONCLUSIONS: Both CPOT and BPS have good reliability and validity, which may be used to assess the pain of ICU patients in oral and maxillofacial surgery.