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Anatomical Landmark Method for Paediatric Port Catheter Tip Positioning

6. Mai 2026 aktualisiert von: 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.

Studienübersicht

Studientyp

Beobachtungs

Einschreibung (Tatsächlich)

53

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • ÇANKAYA
      • Ankara, ÇANKAYA, Türkei (türkiye), 06800
        • Ankara City Hospital Bilkent

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Kind

Akzeptiert gesunde Freiwillige

N/A

Probenahmeverfahren

Nicht-Wahrscheinlichkeitsprobe

Studienpopulation

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.

Beschreibung

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

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

Kohorten und Interventionen

Gruppe / Kohorte
Intervention / Behandlung
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.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Agreement between anatomical landmark method and intracavitary electrocardiography for catheter length determination
Zeitfenster: 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

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Radiographic accuracy of catheter tip position using the anatomical landmark method
Zeitfenster: 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

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Ermittler

  • Hauptermittler: Çağrı Damar, Assoc Prof, Ankara City Hospital Bilkent

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

1. November 2024

Primärer Abschluss (Tatsächlich)

30. April 2025

Studienabschluss (Tatsächlich)

30. April 2025

Studienanmeldedaten

Zuerst eingereicht

6. Mai 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

6. Mai 2026

Zuerst gepostet (Tatsächlich)

12. Mai 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

12. Mai 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

6. Mai 2026

Zuletzt verifiziert

1. Mai 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • TABED 1-25-1050

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