CompletedNot Applicable

Frontal QRS Axis Changes in Patients Undergoing Total Knee Arthroplasty With Spinal Anesthesia (FQRS-TKA)

Turkey (Türkiye)80 participantsStarted 2025-09-01

Plain-language summary

This prospective, single-center, observational study aims to evaluate changes in the frontal QRS axis on ECG before and after spinal anesthesia in patients undergoing total knee arthroplasty. The primary objective is to determine whether spinal anesthesia causes a significant alteration in the frontal QRS axis. A total of 80 patients will be enrolled, and preoperative and postoperative ECG measurements will be compared using paired t-test or Wilcoxon signed-rank test depending on data distribution.

Who can participate

Age range45 Years – 85 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Aged between 45 and 85 years * ASA physical status I-III * Scheduled for elective total knee arthroplasty under spinal anesthesia * Able to tolerate 12-lead ECG before and within 2 hours after surgery Exclusion Criteria: * Known rhythm disorders affecting ECG axis (e.g., heart block, atrial fibrillation, pacemaker) * Conversion to general anesthesia * Admission to intensive care unit after surgery * Missing ECG data * Communication or mental disorders

What they're measuring

Change in Frontal QRS Axis After Spinal Anesthesia

Timeframe: From 2 hours before to 2 hours after surgery

Trial details

NCT IDNCT07112313

SponsorSevim Şenol Karataş

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2025-10-01

View on ClinicalTrials.gov More Spinal Anesthesia trials