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Diaphragmatic Effects of Combined Infraclavicular Brachial Plexus Block and Suprascapular Nerve Block (ICB-SNB)

5 de junho de 2026 atualizado por: Ceren Gul AKPINAR, Gazi University

Evaluation of the Effects of Combined Infraclavicular Brachial Plexus Block and Suprascapular Nerve Block on the Diaphragm in Arthroscopic Shoulder Surgery

This prospective observational study was conducted to evaluate the effects of a combined infraclavicular brachial plexus block and anterior suprascapular nerve block on diaphragmatic function in patients undergoing arthroscopic shoulder surgery. A total of 61 adult patients were enrolled in the study. Diaphragmatic excursion was assessed using ultrasonography both prior to block administration and 30 minutes following the procedure during normal and deep breathing. The primary objective was to assess changes in diaphragmatic excursion and determine the incidence of hemidiaphragmatic paralysis associated with this combined block technique. Secondary outcomes included block performance time, duration of postoperative analgesia, the need for additional intraoperative sedation or analgesia, the occurrence of adverse events, and levels of patient and surgeon satisfaction. The study sought to determine whether this regional anesthesia approach could provide effective anesthesia and analgesia while minimizing impairment of diaphragmatic function.

Visão geral do estudo

Status

Concluído

Condições

Descrição detalhada

This prospective observational study was conducted to evaluate the effects of combined infraclavicular brachial plexus block and anterior suprascapular nerve block on diaphragmatic excursion in patients undergoing elective arthroscopic shoulder surgery.

Patients scheduled for arthroscopic shoulder surgery under regional anesthesia were enrolled in the study. Prior to block administration, baseline diaphragmatic excursion was assessed using ultrasonography during both normal and deep breathing. Each measurement was repeated three times, and the mean value was recorded. The same measurements were repeated 30 minutes after completion of the block procedures using an identical protocol.

The percentage change in diaphragmatic excursion between baseline and post-block measurements was calculated for both normal and deep breathing. Hemidiaphragmatic paralysis was categorized according to the degree of reduction in diaphragmatic excursion as absent (≤25% reduction), partial (25.1-74.9% reduction), or complete (≥75% reduction).

All nerve blocks were performed under ultrasound guidance by anesthesiologists experienced in regional anesthesia techniques. The infraclavicular brachial plexus block was performed using 15 mL of 0.5% bupivacaine deposited around the posterior cord and 8 mL of 0.5% bupivacaine around the lateral cord. The anterior suprascapular nerve block was performed with 7 mL of 0.5% bupivacaine. In addition, arthroscopic portal sites were infiltrated with 10 mL of 0.2% bupivacaine to provide supplementary analgesia.

All patients received intravenous midazolam (2 mg) and paracetamol (1 g) during the intraoperative period. Additional analgesic or sedative medication was administered when required according to clinical conditions and surgical needs. Block performance time, requirement for supplemental analgesia or sedation, and any block-related adverse events were recorded.

The primary outcome measure was the change in diaphragmatic excursion measured by ultrasonography 30 minutes after block administration. Secondary outcome measures included the incidence and severity of hemidiaphragmatic paralysis, block performance time, duration of postoperative analgesia, need for additional intraoperative analgesia or sedation, time to first analgesic requirement, patient and surgeon satisfaction, block-related complications, and conversion to general anesthesia.

The study was designed to investigate whether the combination of infraclavicular brachial plexus block and anterior suprascapular nerve block could provide effective anesthesia and analgesia for arthroscopic shoulder surgery while minimizing impairment of diaphragmatic function and reducing the incidence of clinically significant hemidiaphragmatic paralysis.

Tipo de estudo

Observacional

Inscrição (Real)

61

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.

Locais de estudo

    • Ankara
      • Ankara, Ankara, Turquia (Türkiye), 06500
        • Gazi University Faculty of Medicine Hospital

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

Método de amostragem

Amostra Não Probabilística

População do estudo

Adult patients aged 18-80 years with ASA physical status I-III undergoing elective arthroscopic shoulder surgery at Gazi University Faculty of Medicine Hospital. Eligible participants received ultrasound-guided combined infraclavicular brachial plexus block and anterior suprascapular nerve block. The study evaluated changes in diaphragmatic excursion measured by ultrasonography before and after block administration.

Descrição

Inclusion Criteria:

  • Patients aged 18-80 years.
  • ASA physical status I-III.
  • Scheduled for elective arthroscopic shoulder surgery.
  • Ability to provide written informed consent

Exclusion Criteria:

  • Refusal to undergo peripheral nerve block.
  • Pre-existing peripheral neuropathy.
  • Known pulmonary, hepatic, or renal disease.
  • Allergy to local anesthetics.
  • Infection at the block site.
  • Pre-existing neurological deficit.
  • Body mass index (BMI) > 40 kg/m².
  • Coagulopathy.
  • Sepsis.
  • Previous surgery at the planned block site.

    • Major psychiatric disorders.
    • Inability to complete diaphragmatic ultrasonographic assessment.

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

Coortes e Intervenções

Grupo / Coorte
Patients Undergoing Arthroscopic Shoulder Surgery
Patients undergoing arthroscopic shoulder surgery who received a combined infraclavicular brachial plexus block and anterior suprascapular nerve block. Diaphragmatic excursion was evaluated using ultrasonography before and after block administration.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Change in Diaphragmatic Excursion at 30 Minutes After Block Administration
Prazo: 30 minutes after block administration
Diaphragmatic excursion measured by ultrasonography during normal and deep breathing before block administration and 30 minutes after block administration. The percentage change from baseline was calculated.
30 minutes after block administration

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Incidence of Hemidiaphragmatic Paralysis
Prazo: 30 minutes after block administration
Presence of hemidiaphragmatic paralysis determined by ultrasonographic assessment of diaphragmatic excursion.
30 minutes after block administration
Degree of Hemidiaphragmatic Paralysis
Prazo: 30 minutes after block administration
Hemidiaphragmatic paralysis classified as absent (≤25% reduction), partial (25.1-74.9% reduction), or complete (≥75% reduction)
30 minutes after block administration
Block Performance Time
Prazo: From needle insertion to completion of the block procedure
Time required to complete the combined infraclavicular brachial plexus block and anterior suprascapular nerve block.
From needle insertion to completion of the block procedure
Additional Intraoperative Analgesia Requirement
Prazo: From surgical incision to the end of surgery
Requirement for supplemental analgesic medication during surgery.
From surgical incision to the end of surgery
Time to First Analgesic Requirement
Prazo: Up to 24 hours after surgery
Time from completion of the block procedure to the first postoperative analgesic request.
Up to 24 hours after surgery
Block-Related Complications
Prazo: From block administration until 24 hours after surgery
Incidence of block-related adverse events including Horner syndrome, hoarseness, nausea/vomiting, and hemodynamic complications.
From block administration until 24 hours after surgery

Colaboradores e Investigadores

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

Patrocinador

Investigadores

  • Investigador principal: IRFAN GUNGOR, MD, Gazi University Faculty of Medicine

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 fevereiro de 2025

Conclusão Primária (Real)

20 de julho de 2025

Conclusão do estudo (Real)

20 de julho de 2025

Datas de inscrição no estudo

Enviado pela primeira vez

31 de maio de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

5 de junho de 2026

Primeira postagem (Real)

10 de junho de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

10 de junho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

5 de junho de 2026

Última verificação

1 de junho de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • 2024-GUTF-028

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Descrição do plano IPD

Individual participant data collected during the study will not be shared with other researchers because of institutional policies, ethical considerations, and protection of participant confidentiality.

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

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