Internal Jugular Vein Collapsibility Index for Predicting Post-Induction Hypotension

Condition(s) studied

Investigational drug(s) / intervention(s)

IJV-CI Measurement: Pre-induction Internal Jugular Vein (IJV) measurement will be performed using a linear ultrasound probe (5-12 MHz) while the patient is in the supine position. The IJV will be imaged in the transverse plane at the level of the cricoid cartilage. During spontaneous breathing, the maximum and minimum diameters of the vein will be recorded. The Collapsibility Index (IJV-CI) will be calculated using these measurements. This non-invasive assessment is performed immediately before the induction of general anesthesia to evaluate its predictive value for post-induction hypotension.

Study summary

This study aims to investigate whether the Internal Jugular Vein Collapsibility Index (IJV-CI), measured via ultrasonography, can predict hypotension (low blood pressure) that occurs after the induction of general anesthesia. Researchers will measure the diameter of the internal jugular vein in patients before surgery and compare these measurements with the blood pressure changes during the first minutes of anesthesia. The goal is to determine if IJV-CI can be used as a reliable, non-invasive tool to identify patients at higher risk of developing anesthesia-induced hypotension.

Eligibility

Primary outcome measure(s)

• Internal Jugular Vein Collapsibility Index (IJV-CI) — Baseline (pre-induction) and every minute up to 10 minutes following induction or until surgical in
  Hypotension is defined as a decrease in Mean Arterial Pressure (MAP) of more than 20% from the baseline value. The predictive value of pre-induction IJV-CI for this occurrence will be assessed.Measurements will be recorded at 0, 1, 2, 3, 5, 7, 9, and 10 minutes following induction, but will stop if surgical incision occurs earlier than 10 minutes

Trial sites (1)

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