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Pericapsular Nerve Group Block Versus Femoral Nerve Block Study

29 de julho de 2026 atualizado por: Taksim Egitim ve Arastirma Hastanesi

Comparison of Preoperative Pericapsular Nerve Group (PENG) Block Versus Femoral Nerve Block for Optimizing Spinal Anaesthesia in Proximal Femur Fracture Surgery: A Prospective Randomized Controlled Trial

Hip fractures are common in older adults and are often associated with severe pain, making it difficult for patients to sit for spinal anesthesia before surgery. Peripheral nerve blocks may improve pain control and facilitate patient positioning, but it remains uncertain whether the Pericapsular Nerve Group (PENG) block provides advantages over the traditional femoral nerve block during the spinal anesthesia procedure.

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Descrição detalhada

Hip fractures are among the most common injuries in older adults and are associated with substantial morbidity, mortality, and healthcare utilization. Spinal anesthesia is frequently used for surgical repair of proximal femur fractures because of its favorable safety profile in elderly patients. However, severe pain caused by the fracture often makes positioning for spinal anesthesia difficult, resulting in patient discomfort, prolonged procedure time, multiple needle insertion attempts, and increased procedural complexity.

Peripheral nerve blocks are increasingly used before spinal anesthesia to improve analgesia and facilitate patient positioning. The femoral nerve block (FNB) has long been established as an effective regional anesthesia technique for patients with hip fractures. More recently, the ultrasound-guided Pericapsular Nerve Group (PENG) block has been introduced as a motor-sparing technique targeting the articular branches of the femoral, obturator, and accessory obturator nerves that innervate the anterior hip capsule. Previous studies have demonstrated that the PENG block provides effective analgesia during positioning for spinal anesthesia and may offer superior pain relief compared with conventional techniques. However, evidence comparing the effects of PENG block and femoral nerve block on the technical performance of spinal anesthesia and perioperative hemodynamic stability remains limited.

This prospective, randomized controlled trial is designed to compare ultrasound-guided PENG block with ultrasound-guided femoral nerve block in patients undergoing surgery for proximal femur fracture under spinal anesthesia. The study will evaluate whether PENG block improves procedural conditions for spinal anesthesia compared with femoral nerve block while also assessing perioperative analgesia and hemodynamic responses.

The study hypothesis is that preoperative PENG block will provide better procedural conditions for spinal anesthesia than femoral nerve block by improving patient positioning, reducing pain during positioning, facilitating spinal needle placement, decreasing the need for supplemental analgesic or sedative medication, and contributing to greater perioperative hemodynamic stability.

Tipo de estudo

Intervencional

Inscrição (Estimado)

110

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Locais de estudo

      • Istanbul, Turquia (Türkiye)
        • Recrutamento
        • Taksim Training and Research Hospital
        • Contato:
        • Contato:
        • Investigador principal:
          • Celal Kaya, MD
    • Beyoglu
      • Istanbul, Beyoglu, Turquia (Türkiye)
        • Ainda não está recrutando
        • Taksim Training and Research Hospital
        • Contato:
        • Contato:

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Adulto
  • Adulto mais velho

Aceita Voluntários Saudáveis

Não

Descrição

Inclusion Criteria:

  • Adults aged 50 years or older.
  • Diagnosis of proximal femoral fracture.
  • Scheduled to undergo surgical repair under spinal anesthesia.
  • American Society of Anesthesiologists (ASA) physical status I-III.
  • Able to provide written informed consent.

Exclusion Criteria:

  • Refusal to participate or inability to provide informed consent.
  • Coagulopathy or contraindication to spinal anesthesia or peripheral nerve block.
  • Local infection at the planned injection site.
  • Known allergy or hypersensitivity to local anesthetics.
  • Pre-existing neurological disease affecting lower extremity function or sensory assessment.
  • Cognitive impairment preventing reliable study participation or outcome assessment.
  • Previous lumbar spine surgery.
  • Polytrauma.
  • Body mass index (BMI) <18 kg/m² or >40 kg/m².
  • Current anticoagulant therapy that precludes neuraxial anesthesia or peripheral nerve block according to institutional practice.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Triplo

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Comparador Ativo: PENG Block
Participants will receive a preoperative ultrasound-guided Pericapsular Nerve Group (PENG) block with 20 mL of 0.25% bupivacaine before spinal anesthesia for proximal femur fracture surgery. Spinal anesthesia will subsequently be performed according to the standardized study protocol.
Ultrasound-guided PENG block performed before spinal anesthesia using 20 mL of 0.25% bupivacaine to provide analgesia for patients undergoing surgery for proximal femur fracture.
Standard spinal anesthesia performed after the assigned peripheral nerve block using intrathecal hyperbaric bupivacaine according to the study protocol.
Comparador Ativo: Femoral Nerve Block
Participants will receive a preoperative ultrasound-guided femoral nerve block with 20 mL of 0.25% bupivacaine before spinal anesthesia for proximal femur fracture surgery. Spinal anesthesia will subsequently be performed according to the standardized study protocol.
Standard spinal anesthesia performed after the assigned peripheral nerve block using intrathecal hyperbaric bupivacaine according to the study protocol.
Ultrasound-guided femoral nerve block performed before spinal anesthesia using 20 mL of 0.25% bupivacaine to provide analgesia for patients undergoing surgery for proximal femur fracture.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Spinal Anesthesia Convenience Score (SACS)
Prazo: During spinal anesthesia procedure (immediately after patient positioning and before initiation of surgery)
Spinal anesthesia convenience will be assessed using the Spinal Anesthesia Convenience Score (SACS), a composite clinical score evaluating the ease of spinal anesthesia based on anatomical landmark palpation, patient cooperation, sitting position quality, pain during passive hip flexion, and pain while maintaining the sitting position. Total scores range from 0 to 11, with higher scores indicating easier spinal anesthesia conditions.
During spinal anesthesia procedure (immediately after patient positioning and before initiation of surgery)

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
First-Attempt Success of Spinal Anesthesia
Prazo: During the spinal anesthesia procedure.
The proportion of participants in whom successful intrathecal access is achieved on the first needle insertion attempt.
During the spinal anesthesia procedure.
Number of Spinal Needle Insertion Attempts
Prazo: During the spinal anesthesia procedure.
The total number of spinal needle insertion attempts required to achieve successful spinal anesthesia.
During the spinal anesthesia procedure.
Duration of Spinal Anesthesia Procedure
Prazo: During the spinal anesthesia procedure.
Time from the beginning of patient positioning until completion of spinal anesthesia and return to the supine position, measured in minutes.
During the spinal anesthesia procedure.
Anxiety Score
Prazo: Before peripheral nerve block, 30 minutes after block placement, and immediately before surgical incision (after spinal anesthesia).
Patient anxiety will be assessed using an 11-point Numeric Rating Scale (NRS) ranging from 0 (no anxiety) to 10 (maximum anxiety). Lower scores indicate less anxiety.
Before peripheral nerve block, 30 minutes after block placement, and immediately before surgical incision (after spinal anesthesia).
Patient Satisfaction
Prazo: Postoperative Day 0 (before discharge from the post-anesthesia care unit [PACU])
Patient satisfaction with the anesthesia process will be assessed using a Numeric Rating Scale ranging from 0 (not satisfied at all) to 10 (completely satisfied). Higher scores indicate greater satisfaction.
Postoperative Day 0 (before discharge from the post-anesthesia care unit [PACU])
Anesthesiologist Satisfaction
Prazo: Immediately after completion of spinal anesthesia.
The anesthesiologist's satisfaction with procedural conditions will be assessed using a Numeric Rating Scale ranging from 0 (not satisfied at all) to 10 (completely satisfied). Higher scores indicate greater satisfaction.
Immediately after completion of spinal anesthesia.
Perioperative Hemodynamic Parameters
Prazo: Before peripheral nerve block; 1, 5, 10, 15, and 30 minutes after block placement; and 1, 5, 10, 15, and 30 minutes after spinal anesthesia.
Mean arterial blood pressure will be recorded throughout the perioperative period.
Before peripheral nerve block; 1, 5, 10, 15, and 30 minutes after block placement; and 1, 5, 10, 15, and 30 minutes after spinal anesthesia.
Incidence of Hypotension
Prazo: From spinal anesthesia until 30 minutes after surgery completed.
Hypotension is defined as a mean arterial pressure below 65 mmHg. The proportion of participants experiencing hypotension will be recorded.
From spinal anesthesia until 30 minutes after surgery completed.
Vasopressor Requirement
Prazo: From spinal anesthesia until 30 minutes after surgery completed.
Total intravenous ephedrine dose administered for the treatment of hypotension, measured in milligrams.
From spinal anesthesia until 30 minutes after surgery completed.
Additional Analgesic Medication Requirement
Prazo: During the spinal anesthesia procedure.
Total doses of intravenous fentanyl (micrograms) administered during positioning for spinal anesthesia.
During the spinal anesthesia procedure.
Additional Sedative Medication Requirement
Prazo: During the spinal anesthesia procedure.
Total doses of intravenous midazolam (milligrams) administered during positioning for spinal anesthesia.
During the spinal anesthesia procedure.

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Investigadores

  • Investigador principal: Celal Kaya, Taksim Training and Research Hospital

Publicações e links úteis

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Publicações Gerais

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

22 de julho de 2026

Conclusão Primária (Estimado)

14 de dezembro de 2026

Conclusão do estudo (Estimado)

22 de dezembro de 2026

Datas de inscrição no estudo

Enviado pela primeira vez

6 de julho de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

16 de julho de 2026

Primeira postagem (Real)

21 de julho de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

31 de julho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

29 de julho de 2026

Última verificação

1 de julho de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • E-48670771-514.99-317908988

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Descrição do plano IPD

There is no current plan to share individual participant data (IPD). Future data sharing may be considered upon reasonable request and subject to approval by the sponsor, institutional policies, and applicable ethical and legal requirements.

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .