Anatomical Landmark Method for Paediatric Port Catheter Tip Positioning
6 de maio de 2026 atualizado por: Ankara City Hospital Bilkent
Validation of a Palpable Anatomical Landmark Method for Tip Positioning of Paediatric Port Catheters Using Modified Intracavitary Electrocardiography: A Prospective Observational Study
This study looks at how to place port catheters safely and accurately in children who need long-term intravenous treatment.
For these treatments to work well and to avoid problems such as heart rhythm issues, blood clots, or infections, the tip of the catheter must be in the correct position inside a large vein near the heart.
Doctors commonly use two different methods to estimate the correct catheter length. One method uses body measurements and surface landmarks on the chest. The other method, called intracavitary electrocardiography (IC-ECG), uses changes in the heart's electrical signal during the procedure to guide placement.
In this study, researchers compared these two methods in children. They measured how closely the results of the two techniques matched and how much they differed.
After the catheter was placed, chest X-rays were used to check whether the catheter tip was in the correct position.
The goal of this study is to determine whether the simpler anatomical method can provide accurate and clinically reliable results compared to the IC-ECG method.
Visão geral do estudo
Status
Concluído
Condições
Intervenção / Tratamento
Tipo de estudo
Observacional
Inscrição (Real)
53
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
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ÇANKAYA
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Ankara, ÇANKAYA, Turquia (Türkiye), 06800
- Ankara City Hospital Bilkent
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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
- Filho
Aceita Voluntários Saudáveis
N/D
Método de amostragem
Amostra Não Probabilística
População do estudo
Pediatric participants aged between 1 month and 17 years who underwent elective port catheter placement at a tertiary care center.
All procedures were performed under standardized conditions, and participants were evaluated using both anatomical landmark-based measurements and intracavitary electrocardiography during the same procedure.
Descrição
Inclusion Criteria:
- Pediatric participants aged between 1 month and 17 years scheduled for elective port catheter placement
Exclusion Criteria:
- Participants with central venous anatomical variations or anomalies (such as persistent left superior vena cava or double superior vena cava)
- Participants with thrombosis in the target veins
- Participants with skeletal abnormalities, including anterior chest wall deformities or scoliosis
- Participants for whom parental consent could not be obtained
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 |
Intervenção / Tratamento |
|---|---|
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Pediatric patients undergoing port catheter placement
Children undergoing port catheter placement in whom catheter length was assessed using both the anatomical landmark method and intracavitary electrocardiography (IC-ECG) within the same procedure.
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Port catheter placement procedures were performed under ultrasound guidance.
To ensure correct positioning of the catheter tip, a length estimation method based on anatomical landmarks was used.
This method was developed by reviewing contrast-enhanced chest computed tomography images of pediatric patients without thoracic deformities.
In these images, the ideal catheter tip position was identified just above the junction of the superior vena cava and the right atrium.
When this point was projected onto the chest wall, it most often corresponded to the upper border of the junction between the right third rib and the sternum.
In clinical practice, the distance between the vascular puncture site and this anatomical landmark was measured on the skin using a ruler, and the catheter length was adjusted accordingly before placement.
For each patient, two catheter length measurements were obtained: one using anatomical landmarks and one using intracavitary electrocardiography.
Although both measurements were recorded for comparison, the catheter was trimmed and placed according to the anatomical landmark method.
Intracavitary electrocardiography is a safe and cost-effective method that allows real-time confirmation of catheter tip position.
In this study, a modified approach was created using standard anesthesia monitors.
After venous access was established, the proximal end of the sterile guidewire was connected to an electrocardiogram electrode placed on the right shoulder.
As the guidewire was advanced, changes in the cardiac P-wave were monitored continuously.
The point of maximum P-wave amplitude, corresponding to the junction of the superior vena cava and the right atrium, was identified, and the corresponding intravascular length was recorded.
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Agreement between anatomical landmark method and intracavitary electrocardiography for catheter length determination
Prazo: During the procedure
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Assessment of the agreement between catheter length measurements obtained using the anatomical landmark method and intracavitary electrocardiography in pediatric patients undergoing port catheter placement.
Measurements obtained by both methods were recorded in the same participants, and the difference between the two techniques was analyzed to evaluate consistency and agreement.
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During the procedure
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Radiographic accuracy of catheter tip position using the anatomical landmark method
Prazo: Within 1 day after the procedure
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Evaluation of catheter tip position after placement using the anatomical landmark method based on post-procedural chest X-ray findings.
Catheter tip location was classified as appropriate or inappropriate according to predefined radiographic criteria.
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Within 1 day after the procedure
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Colaboradores e Investigadores
É aqui que você encontrará pessoas e organizações envolvidas com este estudo.
Patrocinador
Investigadores
- Investigador principal: Çağrı Damar, Assoc Prof, Ankara City Hospital Bilkent
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)
1 de novembro de 2024
Conclusão Primária (Real)
30 de abril de 2025
Conclusão do estudo (Real)
30 de abril de 2025
Datas de inscrição no estudo
Enviado pela primeira vez
6 de maio de 2026
Enviado pela primeira vez que atendeu aos critérios de CQ
6 de maio de 2026
Primeira postagem (Real)
12 de maio de 2026
Atualizações de registro de estudo
Última Atualização Postada (Real)
12 de maio de 2026
Última atualização enviada que atendeu aos critérios de controle de qualidade
6 de maio de 2026
Última verificação
1 de maio de 2026
Mais Informações
Termos relacionados a este estudo
Outros números de identificação do estudo
- TABED 1-25-1050
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