Ultrasound Assessment of Internal Jugular Vein for Cannulation and Venous Pressure Prediction
Ultrasound Guidance for Internal Jugular Vein Cannulation: Can Doppler Ultrasound Predict Jugular Venous Pressure Changes by Assessment of Internal Jugular Vein Diameter and Collapsibility?
This prospective observational study aims to evaluate the diagnostic utility of vascular ultrasound for internal jugular vein (IJV) assessment in adult patients undergoing clinically indicated IJV cannulation.
Traditionally, bedside clinical assessment of jugular venous pressure (JVP) is challenging and frequently imprecise in critically ill or obese individuals. This study investigates whether non-invasive ultrasound parameters, specifically IJV diameter, collapsibility index, and Doppler flow patterns, can reliably estimate central venous pressure (CVP) and identify elevated JVP.
Participants admitted to the Intensive Care Unit, Emergency Department, or Operating Theatres who require right IJV catheterization will receive a standardized pre-procedural vascular ultrasound evaluation in a supine position (0-30° head elevation) prior to routine, ultrasound-guided cannulation. Ultrasound measurements will then be compared to direct central venous pressure readings to assess diagnostic accuracy and correlation.
Przegląd badań
Status
Typ studiów
Zapisy (Szacowany)
Kryteria uczestnictwa
Kryteria kwalifikacji
Wiek uprawniający do nauki
- Dorosły
- Starszy dorosły
Akceptuje zdrowych ochotników
Metoda próbkowania
Badana populacja
Opis
Inclusion Criteria:
- Adult patients aged 18 years or older.
- Patients admitted to the Intensive Care Unit (ICU), Emergency Department, or Operating Theatres who require internal jugular vein (IJV) cannulation for clinical indications.
- Patients in whom ultrasound-guided right internal jugular vein cannulation is planned.
- Patients who are hemodynamically stable enough to undergo ultrasound examination before cannulation.
- Patients able to undergo vascular ultrasound examination in the supine position (0-30° head elevation according to the study protocol).
- Patients in whom complete ultrasound assessment of the internal jugular vein can be performed (including maximum diameter, minimum diameter, cross-sectional area, and collapsibility/distensibility index).
- Patients with a clinically indicated assessment of central venous pressure (CVP) or jugular venous pressure (JVP) allowing comparison with ultrasound measurements.
- Patients providing written informed consent, or consent obtained from a legally authorized representative when applicable.
Exclusion Criteria:
- Patients younger than 18 years of age.
- Previous surgery, radiotherapy, or significant trauma involving the neck.
- Known thrombosis, stenosis, or congenital anomalies of the internal jugular vein.
- Local infection, cellulitis, burn, or hematoma at the intended cannulation site.
- Large neck masses, thyroid enlargement, or cervical pathology causing distortion of neck anatomy.
- Severe coagulopathy or uncontrolled bleeding disorders contraindicating internal jugular vein cannulation.
- Patients with cervical spine instability or those in whom proper positioning for ultrasound examination is not possible.
- Inadequate ultrasound visualization of the internal jugular vein.
- Severe tricuspid valve disease or conditions causing marked alterations in central venous hemodynamics that interfere with accurate interpretation of IJV measurements.
- Refusal of the patient or legally authorized representative to provide informed consent.
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
Kohorty i interwencje
Grupa / Kohorta |
|---|
|
Ultrasound-Guided IJV Cannulation Cohort
Adult patients in the Intensive Care Unit, Emergency Department, or Operating Theatres requiring ultrasound-guided right internal jugular vein (IJV) cannulation for clinical indications.
Participants undergo pre-procedural vascular ultrasound to assess IJV diameter, collapsibility index, and Doppler flow characteristics in the supine position (0-30° head elevation), followed by ultrasound-guided catheterization and comparison with central venous pressure measurements.
|
Co mierzy badanie?
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
|
Internal Jugular Vein Collapsibility Index Percentage
Ramy czasowe: Baseline
|
The Internal Jugular Vein (IJV) collapsibility index is evaluated by bedside vascular ultrasound and calculated using the formula: [(maximum anterior-posterior diameter during expiration - minimum anterior-posterior diameter during inspiration) / maximum anterior-posterior diameter during expiration] * 100.
The outcome is reported as a continuous percentage from 0% to 100%, where higher values indicate greater vein collapsibility
|
Baseline
|
Współpracownicy i badacze
Sponsor
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów (Szacowany)
Zakończenie podstawowe (Szacowany)
Ukończenie studiów (Szacowany)
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Rzeczywisty)
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Rzeczywisty)
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Słowa kluczowe
Inne numery identyfikacyjne badania
- US-Guided IJV Access and JVP
Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .