Heart Rate Variability as a Predictor of Rebound Pain Following Total Knee Arthroplasty
CompletedNCT06977191
View the official record on ClinicalTrials.gov Recruiting status changes often. Contact the study team listed on ClinicalTrials.gov, and talk to your doctor before joining a study.
This study has no listed site in Canada in this snapshot. It is included as part of the worldwide chronic pain corpus.
Brief summary (from the registry)
This study aims to investigate whether heart rate variability (HRV), a marker of autonomic nervous system activity, can predict the occurrence of rebound pain after total knee arthroplasty (TKA). Rebound pain is defined as a sudden and intense pain episode (NRS ≥7) that typically arises after the resolution of peripheral nerve blocks used for postoperative analgesia. Patients undergoing elective unilateral TKA under spinal anesthesia with peripheral nerve blocks will be included. HRV will be measured both before and after surgery using a chest-worn heart rate monitor. Pain levels, analgesic consumption, sleep quality, and patient satisfaction will also be recorded. The primary goal is to determine whether perioperative HRV values can serve as a predictive biomarker for rebound pain. Secondary outcomes include the relationship between HRV and pain intensity, opioid use, sleep quality, and length of hospital stay. The findings may contribute to developing individualized pain management strategies for TKA patients.
Study details
- Official title
- The Role of Perioperative Heart Rate Variability in Predicting Rebound Pain After Total Knee Arthroplasty: A Prospective Observational Study
- Conditions
- Rebound Pain
- Total Knee Arthroplasty
- Postoperative Pain, Chronic
- Heart Rate Variability
- Sponsor
- Konya City Hospital
- Start date
- 2025-05-20
- Primary completion
- 2025-12-20
- Sex
- All
- Age range
- from 18 Years to 70 Years
- Results posted
- No results posted in this snapshot
- Countries
- Turkey (Türkiye)
- Total sites listed
- 1
Eligibility criteria
Show eligibility criteria (verbatim from the registry)
Inclusion Criteria: * Age between 18 and 70 years * American Society of Anesthesiologists (ASA) physical status I-III * Scheduled for elective, unilateral total knee arthroplasty under spinal anesthesia * Planned use of multimodal analgesia including peripheral nerve blocks * Ability to provide written informed consent * Ability to understand and complete pain diaries and questionnaires Exclusion Criteria: * Known allergy to local anesthetics * Contraindications to regional anesthesia * Contraindications to spinal anesthesia * ASA physical status IV or higher * Pregnancy or breastfeeding * Neurological or psychiatric disorders impairing ability to participate or report outcomes * Use of anticoagulant therapy or presence of coagulation disorders * Infection at the proposed injection site * Emergency (non-elective) surgical procedures
Source: ClinicalTrials.gov (US National Library of Medicine), snapshot October 2026. Check the registry for current recruiting status. Record: https://clinicaltrials.gov/study/NCT06977191