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Anatomical Landmark Method for Paediatric Port Catheter Tip Positioning

6 maggio 2026 aggiornato da: 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.

Panoramica dello studio

Stato

Completato

Condizioni

Intervento / Trattamento

Tipo di studio

Osservativo

Iscrizione (Effettivo)

53

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

  • Turchia (Türkiye)
    • ÇANKAYA
      • Ankara, ÇANKAYA, Turchia (Türkiye), 06800
        • Ankara City Hospital Bilkent

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Bambino

Accetta volontari sani

N/A

Metodo di campionamento

Campione non probabilistico

Popolazione di studio

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.

Descrizione

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

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

Coorti e interventi

Gruppo / Coorte
Intervento / Trattamento
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.
Procedura: Anatomical Landmark Method
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.
Procedura: Intracavitary Electrocardiography (IC-ECG)
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.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Agreement between anatomical landmark method and intracavitary electrocardiography for catheter length determination
Lasso di tempo: 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

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Radiographic accuracy of catheter tip position using the anatomical landmark method
Lasso di tempo: 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

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Ankara City Hospital Bilkent

Investigatori

  • Investigatore principale: Çağrı Damar, Assoc Prof, Ankara City Hospital Bilkent

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

1 novembre 2024

Completamento primario (Effettivo)

30 aprile 2025

Completamento dello studio (Effettivo)

30 aprile 2025

Date di iscrizione allo studio

Primo inviato

6 maggio 2026

Primo inviato che soddisfa i criteri di controllo qualità

6 maggio 2026

Primo Inserito (Effettivo)

12 maggio 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

12 maggio 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

6 maggio 2026

Ultimo verificato

1 maggio 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • TABED 1-25-1050

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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