Isotonic saline, balanced fluids, and chloride toxicity in ICU: Lessons from the PLUS trial

Abstract

We aimed to develop and validate a Portuguese version of the Obstetric Quality of Recovery-10 (ObsQoR-10-Portuguese) patient-reported outcome measure and evaluate its psychometric properties.After ethical approval, we recruited term pregnant women undergoing uncomplicated elective cesarean delivery in a single Brazilian institution. Women were invited to complete the translated ObsQoR-10-Portuguese and EuroQoL (EQ-5D) questionnaires (including a global health visual analog scale [GHVAS]) at 24 h (±6 h) following delivery, and a subset of women an hour later. We assessed validity and reliability of ObsQoR-10-Portuguese.One hundred thirteen enrolled women completed the surveys at 24 h and 29 women at 25 h (100% response rate). Validity: (i) convergent validity: ObsQoR-10-Portuguese correlated moderately with EuroQoL score (r = −0.587) and GHVAS score (r = 0.568) at 24 h. (ii) Discriminant validity: ObsQoR-10 discriminated well between good versus poor recovery (GHVAS score ≥ 70 versus < 70; difference in mean scores 14.2; p < 0.001). (iii) Hypothesis testing: 24-h ObsQoR-10-Portuguese scores correlated with gestational age (r = 0.191; p = 0.043). (iv) Cross-cultural validity: differential item functioning analysis suggested bias in 2 items. Reliability: (i) internal consistency was good (Cronbach’s alpha = 0.82 and inter-item correlation = 0.31). (ii) Split-half reliability was very good (Spearman–Brown Prophesy Reliability Estimate = 0.80). (iii) Test re-test reliability was excellent (intra-class correlation coefficient = 0.87). (iv) Floor and ceiling effects: < 5% women scored either 0 or 100 (lowest and highest scores, respectively).ObsQoR-10-Portuguese is valid and reliable, and should be considered for use in Portuguese-speaking women to assess their quality of inpatient recovery following cesarean delivery.