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Subclavian Versus Inferior Vena Cava Collapsibility Indices.

NCT03337386 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 64

Last updated 2020-09-18

No results posted yet for this study

Summary

Traditional methods for intravascular volume status assessment include physical examination, raised leg test, central venous pressure (CVP) and pulmonary artery catheters occlusion pressure (PAWP). Central venous pressure and pulmonary artery occlusion pressure are invasive and associated with significant complications. More recently, a number of less invasive techniques have been introduced, but they lack standardization and reliability. Ultrasonically, inferior vena cava collapsibility can detect hypovolemia non-invasively.

Conditions

  • Hemodynamic Instability

Interventions

DIAGNOSTIC_TEST

inferior vena cava collapsibility

inferior vena cava diameters is obtained in the supine position with a convex probe .The probe is placed in the subxiphoid region or the right anterior midaxillary plane.The sagittal section of IVC is imaged. M-mode probe is used to identify the measurement of minimum and maximum venous dimensions over the respiratory cycle using the 3.5-5 MHz phased array probe. To standardize the measurements, measuring of the IVC diameter is performed at 2 cm caudal of the junction point of the right atrium and IVC. The difference between the maximum (D max) and minimum (D min)diameters of the target vein is normalized according to the standard formula to yield the collapsibility index (CI).

DIAGNOSTIC_TEST

subclavian vein collapsibility

Right SCV diameters is checked in the supine position using a high frequency linear array probe (6-13 MHz) and M-mode. To standardize the measurements, the probe is placed beneath the proximal part of the middle part of the clavicle perpendicular to long-axis of the SCV to obtain the best cross-sectional view of the vien. After the target vein is localized , the dynamic diameter change is recorded using M-mode to identify and measure the minimum and maximum venous diameters.To calculate SCV collapsibility index, the standard formula is used.

DIAGNOSTIC_TEST

central venous pressure

ultrasound guided 7.5-F central venous catheter is introduced via right internal jugular vein under local analgesia with 2% lidocaine for measuring the CVP.

Sponsors & Collaborators

  • Mansoura University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
20 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2017-11-12
Primary Completion
2018-04-10
Completion
2018-05-20

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03337386 on ClinicalTrials.gov