Application of surface-enhanced laser desorption/ionization time-of-flight mass spectrometry technology in evaluating anxiety in patients with malignant tumors

Abstract

Objective To study the occurrence of anxiety in patients with malignant tumor, and in further explore the scientificity and clinical application value of surface-enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI) technology in anxiety detection. Methods 1 000 patients with malignant tumor were selected as research objects, the self-rating anxiety scale (SAS) was used to evaluate the anxiety on the first day of admission, the fasting venous blood of patients was taken on the next day morning. The SAS score and SELDI result were compared and analyzed. Results The effective sample number was 988. The SAS score was 56.32±9.665, there were 454 cases of anxiety, the incidence rate of anxiety was 45.95 %. 470 cases were SELDI test positive, and the incidence rate of anxiety was 47.57 %. SAS was used as the gold standard to judge anxiety, the sensitivity and specificity of SELDI technology were 93.17 % and 91.20 %, the positive predictive value and negative predictive value were 90.00 % and 94.02 %, the total coincidence rate was 92.11 %. SAS score highly correlated with the abundance of SELDI, the fitting curve showed an up trend, and the correlation coefficient was 0.837. Conclusions The incidence of malignant tumor patients' anxiety is relatively high. SELDI technique shows high sensitivity, specificity, total coincidence rate and correlation in anxiety detection, it can be used as an objective evaluation of anxiety. Key words: Surface-enhanced laser desorption/ionization time-of-flight mass spectrometry; Malignant tumor; Anxiety; Self-rating anxiety scale