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Autonomic and Immune Effects of Regional Anesthesia in Total Hip Arthroplasty (PENG neuromodu)

3 listopada 2026 zaktualizowane przez: Poznan University of Medical Sciences

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.

Przegląd badań

Status

Jeszcze nie rekrutacja

Warunki

Interwencja / Leczenie

Szczegółowy opis

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.

Typ studiów

Interwencyjne

Zapisy (Szacowany)

165

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Lokalizacje studiów

      • Poznan, Polska, 62-701
        • Poznan University of Medical Sciences

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

18 lat do 100 lat (Dorosły, Starszy dorosły)

Akceptuje zdrowych ochotników

Nie

Płeć kwalifikująca się do nauki

Wszystko

Opis

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.

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie
  • Przydział: Randomizowane
  • Model interwencyjny: Przydział równoległy
  • Maskowanie: Poczwórny

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: 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

Inne nazwy:
  • PENG
  • Blokada grupy nerwów okołotorebkowych
  • 0.2% Ropimol
Eksperymentalny: Local Infiltration Analgesia (LIA)

Ropivacaine for Local Infiltration Analgesia

Local infiltration analgesia is performed intraoperatively - 20ml 0.2% ropivacaine

Inne nazwy:
  • Periarticular Infiltration Analgesia
  • 0.2% ropimol
Eksperymentalny: 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

Inne nazwy:
  • PENG
  • Blokada grupy nerwów okołotorebkowych
  • 0.2% Ropimol

Local infiltration analgesia is performed intraoperatively - 20ml 0.2% ropivacaine

Inne nazwy:
  • Periarticular Infiltration Analgesia
  • 0.2% ropimol

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Change in Systemic Immune-Inflammation Index (SII)
Ramy czasowe: 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

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Neutrophil-to-Lymphocyte Ratio (NLR)
Ramy czasowe: 24 hours after surgery

Comparison of the change in neutrophil-to-lymphocyte ratio among the three study groups.

24 hours after surgery
Neutrophil-to-Lymphocyte Ratio (NLR)
Ramy czasowe: 12 hours after surgery

Comparison of the change in neutrophil-to-lymphocyte ratio among the three study groups.

12 hours after surgery
Neutrophil-to-Lymphocyte Ratio (NLR)
Ramy czasowe: 48 hours after surgery

Comparison of the change in neutrophil-to-lymphocyte ratio among the three study groups.

48 hours after surgery
Platelet-to-Lymphocyte Ratio (PLR)
Ramy czasowe: 24 hours after surgery

Comparison of the change in platelet-to-lymphocyte ratio among the three study groups.

24 hours after surgery
Platelet-to-Lymphocyte Ratio (PLR)
Ramy czasowe: 48 hours after surgery

Comparison of the change in platelet-to-lymphocyte ratio among the three study groups.

48 hours after surgery
Platelet-to-Lymphocyte Ratio (PLR)
Ramy czasowe: 12 hours after surgery

Comparison of the change in platelet-to-lymphocyte ratio among the three study groups.

12 hours after surgery
Postoperative pain intensity
Ramy czasowe: 2 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest.

2 hours after surgery
Postoperative pain intensity at movement
Ramy czasowe: 2 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement.

2 hours after surgery
Postoperative pain intensity at movement
Ramy czasowe: 6 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement.

6 hours after surgery
Postoperative pain intensity at movement
Ramy czasowe: 12 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement.

12 hours after surgery
Postoperative pain intensity at movement
Ramy czasowe: 24 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement.

24 hours after surgery
Postoperative pain intensity at movement
Ramy czasowe: 48 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at movement.

48 hours after surgery
Postoperative pain intensity
Ramy czasowe: 6 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest.

6 hours after surgery
Postoperative pain intensity
Ramy czasowe: 12 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest.

12 hours after surgery
Postoperative pain intensity
Ramy czasowe: 24 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest.

24 hours after surgery
Postoperative pain intensity
Ramy czasowe: 48 hours after surgery

Comparison of postoperative pain intensity assessed using the Numeric Rating Scale (NRS; 0-10) at rest.

48 hours after surgery
Postoperative opioid consumption
Ramy czasowe: 48 hours after surgery

Comparison of cumulative opioid consumption during the postoperative period, expressed as intravenous morphine milligram equivalents (MME).

48 hours after surgery
Time to first rescue analgesia
Ramy czasowe: 48 hours after surgery

Comparison of the time from the end of surgery to the first administration of rescue opioid analgesia.

48 hours after surgery
Systemic Immune-Inflammation Index (SII)
Ramy czasowe: 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)
Ramy czasowe: 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)
Ramy czasowe: 48 hours after surgery

Comparison of the change in the Systemic Immune-Inflammation Index (SII) among the three study groups.

48 hours after surgery
C-reactive protein (CRP)
Ramy czasowe: 12 hours after surgery

Comparison of postoperative C-reactive protein (CRP) concentrations among the three study groups.

12 hours after surgery
C-reactive protein (CRP)
Ramy czasowe: 24 hours after surgery

Comparison of postoperative C-reactive protein (CRP) concentrations among the three study groups.

24 hours after surgery
C-reactive protein (CRP)
Ramy czasowe: 48 hours after surgery

Comparison of postoperative C-reactive protein (CRP) concentrations among the three study groups.

48 hours after surgery

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Szacowany)

1 grudnia 2026

Zakończenie podstawowe (Szacowany)

30 grudnia 2027

Ukończenie studiów (Szacowany)

1 stycznia 2028

Daty rejestracji na studia

Pierwszy przesłany

29 lipca 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

3 listopada 2026

Pierwszy wysłany (Rzeczywisty)

9 listopada 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

9 listopada 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

3 listopada 2026

Ostatnia weryfikacja

1 listopada 2026

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • 18/2026

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

TAK

Opis planu IPD

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.

Ramy czasowe udostępniania IPD

Data will be available beginning 6 months after publication of the primary results and for a period of 5 years.

Kryteria dostępu do udostępniania IPD

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.

Typ informacji pomocniczych dotyczących udostępniania IPD

  • PROTOKÓŁ BADANIA
  • SOK ROŚLINNY
  • ANALITYCZNY_KOD

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .