This study aims to explore the feasibility and scientific validity of carotid-jugular Doppler in evaluating volume tolerance in shock patients (with the VExUS score as an important reference standard), and to conduct an in-depth analysis of the correlation between its monitoring indicators and patient prognosis.The primary endpoint is comparison of the agreement between hands-free carotid-jugular Doppler and the VExUS score in evaluating volume tolerance.The secondary endpoint is correlation between volume tolerance assessed by hands-free carotid-jugular Doppler and the clinical outcomes of shock patients.
Eligibility
Sex
ALL
Min age
18 Years
Max age
—
Healthy volunteers
No
Inclusion Criteria:
* Shock patients admitted to the ICU are defined as those with persistent hypotension (systolic blood pressure \< 90 mmHg or a decrease of ≥ 40 mmHg from the baseline blood pressure) accompanied by signs of tissue hypoperfusion.
* Age ≥ 18 years old.
* The patient or their legal representatives signed the informed consent form.
Exclusion Criteria:
* Patients with severe pulmonary circulatory disorders such as severe pulmonary hypertension and acute pulmonary embolism.
* Patients with right ventricular myocardial infarction or severe tricuspid regurgitation.
* Patients with severe neck trauma or deformity that affects Doppler examination of cervical arteries and veins, or those with anatomical contraindications preventing evaluation of at least one cervical artery or vein.
* Pregnant or lactating women.
* Patients with diseases that may interfere with abdominal ultrasound examination.
Primary outcome measure(s)
Hands-free Carotid Artery and Vein Doppler Parameters — Time of shock in ICU within 3 days Elevate the patient's upper body to 45°, keep the legs flat, place the long axis of the probe perpendicular to the carotid vessels (with the probe height not exceeding the upper edge of the thyroid cartilage), locate the optimal signals of the common carotid artery and internal jugular vein waveforms, and then fix the probe.
Trial sites (1)
Facility
City
Region
Status
Zhongda Hospital Affiliated to Southeast University
Nanjing
Jiangsu
Official registry record
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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