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Heart Rate Variability as a Predictor of Rebound Pain Following Total Knee Arthroplasty

NCT06977191 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 110

Last updated 2026-01-22

No results posted yet for this study

Summary

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.

Conditions

  • Rebound Pain
  • Total Knee Arthroplasty
  • Postoperative Pain, Chronic
  • Heart Rate Variability

Sponsors & Collaborators

  • Konya City Hospital

    lead OTHER

Principal Investigators

  • Mahmut Tutar, MD · KONYA CITY HOSPİTAL

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-05-20
Primary Completion
2025-12-20
Completion
2025-12-25

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06977191 on ClinicalTrials.gov