Effects of Anesthesia Type on Inflammatory Response

NCT ID: NCT06984315

Last Updated: 2025-05-25

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

849 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-01-01

Study Completion Date

2025-05-10

Brief Summary

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In total knee arthroplasty, surgical and anesthetic procedures can lead to a significant increase in systemic inflammation. This procedure is frequently performed under either general or spinal anesthesia. However, studies investigating the effect of anesthesia type on systemic inflammation have shown conflicting results. The Systemic Inflammatory Response Index (SIRI) and the Systemic Immune-Inflammation Index (SII) provide important information about the extent of systemic inflammation. This study aimed to investigate the effects of general and spinal anesthesia on perioperative changes in SII and SIRI during total knee arthroplasty. Between January 2020 and April 2025, data from 849 patients who underwent total knee arthroplasty were retrospectively reviewed. Patients received either spinal anesthesia (Group S) or general anesthesia (Group G). The groups were compared in terms of changes in perioperative SII and SIRI (ΔSII and ΔSIRI), total opioid consumption, postoperative complications, and length of hospital stay.

Detailed Description

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Conditions

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Spinal Aneshtesia General Anesthetic Inflammation Neutrophils Total Knee Arthroplasty White Blood Cells

Study Design

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Observational Model Type

OTHER

Study Time Perspective

RETROSPECTIVE

Study Groups

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Group S

Underwent total knee arthroplasty under spinal anesthesia

The effects of the groups on perioperative inflammation changes were compared.

Intervention Type OTHER

Between January 2020 and April 2025, data from 849 patients who underwent total knee arthroplasty were retrospectively reviewed. Preoperative hemogram values were obtained during routine anesthesia clinic evaluation, typically one day prior to surgery. Postoperative hemogram samples were collected on the day of surgery (postoperative day 0), within 4 to 12 hours after the procedure. Blood parameters included neutrophil, lymphocyte, monocyte, and platelet counts. Based on these values, inflammatory indices such as the neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), systemic immune-inflammation index (SII), and systemic inflammatory response index (SIRI) were calculated.

Group G

Underwent total knee arthroplasty under general anesthesia

The effects of the groups on perioperative inflammation changes were compared.

Intervention Type OTHER

Between January 2020 and April 2025, data from 849 patients who underwent total knee arthroplasty were retrospectively reviewed. Preoperative hemogram values were obtained during routine anesthesia clinic evaluation, typically one day prior to surgery. Postoperative hemogram samples were collected on the day of surgery (postoperative day 0), within 4 to 12 hours after the procedure. Blood parameters included neutrophil, lymphocyte, monocyte, and platelet counts. Based on these values, inflammatory indices such as the neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), systemic immune-inflammation index (SII), and systemic inflammatory response index (SIRI) were calculated.

Interventions

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The effects of the groups on perioperative inflammation changes were compared.

Between January 2020 and April 2025, data from 849 patients who underwent total knee arthroplasty were retrospectively reviewed. Preoperative hemogram values were obtained during routine anesthesia clinic evaluation, typically one day prior to surgery. Postoperative hemogram samples were collected on the day of surgery (postoperative day 0), within 4 to 12 hours after the procedure. Blood parameters included neutrophil, lymphocyte, monocyte, and platelet counts. Based on these values, inflammatory indices such as the neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), systemic immune-inflammation index (SII), and systemic inflammatory response index (SIRI) were calculated.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients aged 18 to 75 years
* Patients with ASA physical status I or II
* Patients who have underwent total knee arthroplasty under general or spinal anesthesia

Exclusion Criteria

* Patients with BMI ≥40 kg/m2
* Patients with ASA physical status ≥III
* Patients with severe cardiopulmonary or metabolic disorders, coagulation disorders or active infection
* Patients with known allergies or chronic steroid use
* Patients with incomplete laboratory data
* Patients who underwent revision total knee arthroplasty
* Patients who required intraoperative conversion from spinal to general anesthesia
* Patients with a history of major trauma and/or emergency surgery
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Tokat Gaziosmanpasa University

OTHER

Sponsor Role lead

Responsible Party

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Ali Genc

Assistant professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Tokat Gaziosmanpasa University

Tokat Province, , Turkey (Türkiye)

Site Status

Countries

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Turkey (Türkiye)

Other Identifiers

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25-MOBAEK-160

Identifier Type: -

Identifier Source: org_study_id

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