ASSOCIATION OF PAIN INTENSITY AND PSYCHOLOGICAL FACTORS AMONG PATIENTS WITH COMPLEX REGIONAL PAIN SYNDROME.A CORRELATIONAL, CROSS-SECTIONAL STUDY MAR

Abstract

Introduction: the main objective of this study was to describe the presence of psychological factors and quan-tify the relationship between them and the intensity of pain perceived by patients with Complex Regional Pain Syndrome (CRPS). Material and method: a cross-sectional observational study with consecutive non-probabilis-tic sampling was carried out from January 25, 2022, to April 12, 2022 at Universidad Europea de Canarias (Spain)of adults aged between 18 and 65 years with a medical diagnosis of CRPS who did not receive pharmacological and non-pharmacological therapy to control symptoms. Pain intensity was measured as a primary variable and ki-nesiophobia (TSK-11), perceived stress (PSS), catastrophism (PCS), anxiety (STAI), depression (BDI), hypervigi-lance (PAVQ) and quality of life as secondary variables (SF-36). The statistical analysis was performed with the SPSS Statistic 28 (IBM®) program, performing the descriptive analysis, the normality tests, and the calculation of the Pearson's r correlation coefficient. Results:19 participants were selected (M = 9, 47.3 %; H = 10, 52.6 %)whose pain intensity was moderate (5.65 ± 2.92). There was a moderate and positive linear correlation between pain intensity and kinesiophobia (Pearson's r = 0.479, r2 = 0.230, 1-r2 = 0.770) as well as pain intensity and de-pression (Pearson's r = 0.407, r2 = 0.166, 1-r2 = 0.834). In addition, the main variable is strongly correlated with the SF36-DC (Pearson's r = 0.663, r2 = 0.440, 1- r2 = 0.560), SF36-SG (Pearson's r = 0.567, r2 = 0.321, 1- r2 = 0.679)and SF36-V (Pearson's r = 0.629, r2 = 0.396, 1- r2 = 0.604). Conclusions: Pain intensity is moderately associated with kinesiophobia and depression in CRPS patients. Also, pain intensity correlates strongly with functionality as-sociated with bodily pain, vitality, and perceived global health.