Autonomic and Immune Effects of Regional Anesthesia in Total Hip Arthroplasty (PENG neuromodu)
Effects of Three Regional Anesthesia Strategies on Autonomic Regulation, Systemic Inflammatory Response, and Postoperative Recovery Following Elective Total Hip Arthroplasty: A Prospective Randomized Double-Blind Trial
Surgical trauma activates the sympathetic nervous system and induces a systemic inflammatory response, both of which may adversely affect postoperative recovery. Regional anesthesia has traditionally been used for perioperative analgesia; however, emerging evidence suggests that peripheral nerve blocks may also modulate autonomic and immune pathways. This prospective randomized double-blind trial aims to compare three regional anesthesia strategies in patients undergoing elective total hip arthroplasty under spinal anesthesia and to determine their effects on autonomic regulation, systemic inflammatory response, postoperative pain, opioid consumption, quality of recovery, and early functional outcomes.
연구 개요
상세 설명
Total hip arthroplasty (THA) is associated with substantial surgical trauma, resulting in activation of the sympathetic nervous system and a systemic inflammatory response that may contribute to postoperative pain, delayed functional recovery, and perioperative complications. Although regional anesthesia techniques are widely used to improve postoperative analgesia, increasing evidence suggests that they may also influence autonomic regulation and neuroimmune interactions beyond their analgesic effects. The extent to which different regional anesthesia strategies modify perioperative autonomic and inflammatory responses remains incompletely understood.
This prospective, randomized, double-blind, controlled trial aims to compare three regional analgesic strategies in patients undergoing elective primary total hip arthroplasty under spinal anesthesia: ultrasound-guided pericapsular nerve group (PENG) block, local infiltration analgesia (LIA), and the combination of PENG block with LIA. All patients will receive standardized perioperative anesthetic and multimodal analgesic management, with the regional analgesic technique being the only study intervention.
The primary objective is to determine whether different regional anesthesia strategies differentially influence perioperative autonomic regulation and systemic inflammatory response. Autonomic function will be assessed using perioperative hemodynamic parameters and vasopressor requirements, while systemic inflammatory activation will be evaluated using routinely available inflammatory biomarkers, including the Systemic Immune-Inflammation Index (SII), neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), C-reactive protein (CRP), and other laboratory markers measured before and after surgery.
Secondary objectives include comparison of postoperative pain intensity at rest and during movement, opioid consumption, time to first rescue analgesia, quality of recovery assessed using the Quality of Recovery-15 (QoR-15) questionnaire, incidence of postoperative nausea and vomiting, time to first ambulation, length of hospital stay, patient satisfaction, and the incidence of postoperative complications.
The study is designed to determine whether combining peripheral nerve blockade with periarticular infiltration provides additive benefits not only for postoperative analgesia but also for modulation of autonomic-immune interactions and enhancement of postoperative recovery. The findings may improve understanding of peripheral nerve blocks as a form of perioperative neuromodulation and support optimization of regional anesthesia strategies in patients undergoing total hip arthroplasty.
연구 유형
등록 (추정된)
단계
- 해당 없음
연락처 및 위치
연구 연락처
- 이름: Malgorzata Reysner, MD PhD
- 전화번호: +48 61 8310122
- 이메일: mreysner@ump.edu.pl
연구 장소
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Poznan, 폴란드, 62-701
- Poznan University of Medical Sciences
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- Adults aged ≥18 years.
- Scheduled for elective primary total hip arthroplasty due to primary hip osteoarthritis.
- American Society of Anesthesiologists (ASA) physical status I-III.
- Planned spinal anesthesia with one of the study regional analgesia techniques.
- Ability to understand the study procedures and provide written informed consent.
Exclusion Criteria:
- Refusal or inability to provide written informed consent.
- Revision hip arthroplasty, simultaneous bilateral hip arthroplasty, or hip arthroplasty performed for an acute fracture.
- Known hypersensitivity to ropivacaine or other medications required for the study procedures.
- Contraindication to spinal anesthesia, PENG block, or local infiltration analgesia, including infection at the injection site or a coagulation disorder or antithrombotic treatment that precludes safe performance of the planned procedures.
- Pre-existing neurological or neuromuscular disease that substantially affects sensation or motor function in the operated limb or prevents reliable assessment of study outcomes.
- Cognitive impairment or a communication disorder that prevents understanding of the study procedures or reliable completion of pain assessments.
- A medical condition that, in the investigator's judgment, makes participation or the planned anesthetic procedures unsafe.
- Planned use of an additional regional analgesic technique outside the study protocol.
- Participation in another interventional study that could interfere with the assessment of the study outcomes.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 네 배로
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
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실험적: PENG Block
Ropivacaine for Pericapsular Nerve Group (PENG) Block |
Ultrasound-guided single-injection pericapsular nerve group (PENG) block performed before surgery using 20ml of 0.2% ropivacaine
다른 이름들:
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실험적: Local Infiltration Analgesia (LIA)
Ropivacaine for Local Infiltration Analgesia |
Local infiltration analgesia is performed intraoperatively - 20ml 0.2% ropivacaine
다른 이름들:
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실험적: Combined PENG Block + LIA
Ropivacaine for Pericapsular Nerve Group (PENG) block before surgery and Local Infiltration Analgesia (LIA) |
Ultrasound-guided single-injection pericapsular nerve group (PENG) block performed before surgery using 20ml of 0.2% ropivacaine
다른 이름들:
Local infiltration analgesia is performed intraoperatively - 20ml 0.2% ropivacaine
다른 이름들:
|
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Change in Systemic Immune-Inflammation Index (SII)
기간: 24 hours after surgery
|
Comparison of the change in Systemic Immune-Inflammation Index from baseline to postoperative 24 hours among the three study groups. |
24 hours after surgery
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Neutrophil-to-Lymphocyte Ratio (NLR)
기간: 24 hours after surgery
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Comparison of the change in neutrophil-to-lymphocyte ratio among the three study groups. |
24 hours after surgery
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Neutrophil-to-Lymphocyte Ratio (NLR)
기간: 12 hours after surgery
|
Comparison of the change in neutrophil-to-lymphocyte ratio among the three study groups. |
12 hours after surgery
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Neutrophil-to-Lymphocyte Ratio (NLR)
기간: 48 hours after surgery
|
Comparison of the change in neutrophil-to-lymphocyte ratio among the three study groups. |
48 hours after surgery
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Platelet-to-Lymphocyte Ratio (PLR)
기간: 24 hours after surgery
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Comparison of the change in platelet-to-lymphocyte ratio among the three study groups. |
24 hours after surgery
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Platelet-to-Lymphocyte Ratio (PLR)
기간: 48 hours after surgery
|
Comparison of the change in platelet-to-lymphocyte ratio among the three study groups. |
48 hours after surgery
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Platelet-to-Lymphocyte Ratio (PLR)
기간: 12 hours after surgery
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Comparison of the change in platelet-to-lymphocyte ratio among the three study groups. |
12 hours after surgery
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Postoperative pain intensity
기간: 2 hours after surgery
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Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest. |
2 hours after surgery
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Postoperative pain intensity at movement
기간: 2 hours after surgery
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Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement. |
2 hours after surgery
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Postoperative pain intensity at movement
기간: 6 hours after surgery
|
Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement. |
6 hours after surgery
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Postoperative pain intensity at movement
기간: 12 hours after surgery
|
Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement. |
12 hours after surgery
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Postoperative pain intensity at movement
기간: 24 hours after surgery
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Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement. |
24 hours after surgery
|
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Postoperative pain intensity at movement
기간: 48 hours after surgery
|
Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement. |
48 hours after surgery
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Postoperative pain intensity
기간: 6 hours after surgery
|
Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest. |
6 hours after surgery
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Postoperative pain intensity
기간: 12 hours after surgery
|
Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest. |
12 hours after surgery
|
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Postoperative pain intensity
기간: 24 hours after surgery
|
Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest. |
24 hours after surgery
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Postoperative pain intensity
기간: 48 hours after surgery
|
Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest. |
48 hours after surgery
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Postoperative opioid consumption
기간: 48 hours after surgery
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Comparison of cumulative opioid consumption during the postoperative period, expressed as intravenous morphine milligram equivalents (MME). |
48 hours after surgery
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Time to first rescue analgesia
기간: 48 hours after surgery
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Comparison of the time from the end of surgery to the first administration of rescue opioid analgesia. |
48 hours after surgery
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Systemic Immune-Inflammation Index (SII)
기간: 24 hours after surgery
|
Comparison of the change in the Systemic Immune-Inflammation Index (SII) among the three study groups. |
24 hours after surgery
|
|
Systemic Immune-Inflammation Index (SII)
기간: 12 hours after surgery
|
Comparison of the change in the Systemic Immune-Inflammation Index (SII) among the three study groups. |
12 hours after surgery
|
|
Systemic Immune-Inflammation Index (SII)
기간: 48 hours after surgery
|
Comparison of the change in the Systemic Immune-Inflammation Index (SII) among the three study groups. |
48 hours after surgery
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C-reactive protein (CRP)
기간: 12 hours after surgery
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Comparison of postoperative C-reactive protein (CRP) concentrations among the three study groups. |
12 hours after surgery
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C-reactive protein (CRP)
기간: 24 hours after surgery
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Comparison of postoperative C-reactive protein (CRP) concentrations among the three study groups. |
24 hours after surgery
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C-reactive protein (CRP)
기간: 48 hours after surgery
|
Comparison of postoperative C-reactive protein (CRP) concentrations among the three study groups. |
48 hours after surgery
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공동 작업자 및 조사자
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
기본 완료 (추정된)
연구 완료 (추정된)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
기타 연구 ID 번호
- 18/2026
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
IPD 계획 설명
De-identified individual participant data underlying the published results will be made available upon reasonable request to the corresponding author. Data will be shared after publication of the primary study results and following approval of a methodologically sound research proposal and completion of a data sharing agreement.
IPD 공유 기간
Data will be available beginning 6 months after publication of the primary results and for a period of 5 years.
IPD 공유 액세스 기준
Researchers who provide a methodologically sound proposal aimed at achieving the objectives of the approved proposal will be granted access. Requests should be directed to the corresponding author. A data access agreement will be required prior to data release.
IPD 공유 지원 정보 유형
- 연구_프로토콜
- 수액
- ANALYTIC_CODE
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