Anatomical Landmark Method for Paediatric Port Catheter Tip Positioning
6 de mayo de 2026 actualizado 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.
Descripción general del estudio
Estado
Terminado
Condiciones
Intervención / Tratamiento
Tipo de estudio
De observación
Inscripción (Actual)
53
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Ubicaciones de estudio
-
-
ÇANKAYA
-
Ankara, ÇANKAYA, Turquía (Türkiye), 06800
- Ankara City Hospital Bilkent
-
-
Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
- Niño
Acepta Voluntarios Saludables
N/A
Método de muestreo
Muestra no probabilística
Población de estudio
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.
Descripción
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
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
Intervención / Tratamiento |
|---|---|
|
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.
|
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.
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Agreement between anatomical landmark method and intracavitary electrocardiography for catheter length determination
Periodo de tiempo: During the procedure
|
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.
|
During the procedure
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Radiographic accuracy of catheter tip position using the anatomical landmark method
Periodo de tiempo: Within 1 day after the procedure
|
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.
|
Within 1 day after the procedure
|
Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Investigadores
- Investigador principal: Çağrı Damar, Assoc Prof, Ankara City Hospital Bilkent
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio (Actual)
1 de noviembre de 2024
Finalización primaria (Actual)
30 de abril de 2025
Finalización del estudio (Actual)
30 de abril de 2025
Fechas de registro del estudio
Enviado por primera vez
6 de mayo de 2026
Primero enviado que cumplió con los criterios de control de calidad
6 de mayo de 2026
Publicado por primera vez (Actual)
12 de mayo de 2026
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
12 de mayo de 2026
Última actualización enviada que cumplió con los criterios de control de calidad
6 de mayo de 2026
Última verificación
1 de mayo de 2026
Más información
Términos relacionados con este estudio
Otros números de identificación del estudio
- TABED 1-25-1050
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .