The researchers investigated the spectral Doppler waveform of the internal jugular vein flow. The waveform typically exhibits a biphasic pattern toward the heart, while a triphasic pattern may be observed proximally. Specifically, two forward peaks are formed during cardiac systole and early-to-mid diastole, known as the S-wave and D-wave, respectively. During late diastole, right atrial contracti
Conditions
Interventions
Observational group:None
Sponsors
Dalian University of Technology Affiliated Central Hospital (Dalian Central Hospital)
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1.ICU patients with central venous pressure (CVP) monitoring;
Exclusion criteria
Exclusion criteria: 1.Venous thromboembolism (VTE); 2.Vascular Malformation; 3.Moderate to Severe Tricuspid Regurgitation; 4.Atrial Septal Defect (ASD); 5.Patients unable to undergo central venous catheterization for various reasons;
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Bilateral internal jugular vein ultrasond-related data: end-expiratory diameter, respiratory variability, area variability, deformation index, blood flow waveform;Evaluation indicators: blood gas lactate concentration (Lac), central venous pressure (CVP), mean arterial pressure (MAP), cardiac output (CO), urine volume;Traditional ultrasound assessment indicators: inferior vena cava diameter, variability, deformation index, VExUS score; | — |
Countries
China
Contacts
Public ContactCui Song
Dalian University of Technology Affiliated Central Hospital (Dalian Central Hospital)
Outcome results
None listed