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  • Title: Reliability and validity of the pressure algometer in predicting gynecological surgery pain.
    Author: Yin Q, Wang D, Chen XH, Lu F, Cao HZ.
    Journal: J Matern Fetal Neonatal Med; 2024 Dec; 37(1):2406342. PubMed ID: 39327158.
    Abstract:
    OBJECTIVE: The purpose of this study was to determine the reliability and validity of the pressure algometer in predicting gynecological surgery pain. We looked into the predictive value of preoperative pain sensitivity to gynecological pain and the relationship between preoperative pressure pain threshold (PPT), pressure pain tolerance (PTO), and postoperative pain outcomes. METHODS: Reliability test: We recruited 60 volunteers at Nantong University. For three consecutive days, two examiners measured the pain sensitivity of each participant using a pressure algometer. Its test-retest and intra-rater reliability were assessed using the intraclass correlation coefficient (ICC). Validity test: We selected patients who underwent gynecological surgery in a hospital for the validity test. Before surgery, we assessed the patient's pain sensitivity to various stimuli. To determine the relationship between preoperative pain sensitivity and postoperative pain, we collected postoperative Numerical Rating Scale (NRS) and sufentanil consumption data. RESULTS: The algometer revealed a high test-retest and intra-rater reliability. According to the calculation of Youden's index, there was a 73.1% chance of patients with moderate to severe postoperative pain having a PTO <6.22 N, and patients with PTO <6.22 N had an 87.5% probability of moderate to severe postoperative pain. CONCLUSIONS: The pressure algometer has a high degree of accuracy in measuring the PPT and PTO of normal healthy individuals, making it a reliable tool for quantifying pain sensitivity. PTO can be used to predict the occurrence of moderate to severe postoperative pain.
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