IVC Collapsibility Index in Lumbar Stabilization Surgery

NCT07549165 · tracked via the Priya Life Science Turkey tracker

Sponsor

Trabzon Kanuni Education and Research Hospital

Phase

Observational

Started

2026-02-15

Last updated

2026-04-23

Condition(s) studied

Lumbar Spine SurgeryHemodynamic ChangesIntravascular Volume Status

Study summary

This study aims to evaluate perioperative hemodynamic changes using the inferior vena cava (IVC) collapsibility index in patients undergoing lumbar stabilization surgery under general anesthesia. The IVC diameter and collapsibility index will be measured using ultrasonography at predefined perioperative time points. Hemodynamic parameters such as blood pressure and heart rate will also be recorded. The study seeks to determine whether the IVC collapsibility index can be used as a non-invasive indicator of intravascular volume status and hemodynamic changes during lumbar spine surgery.

Eligibility

Sex

ALL

Min age

18 Years

Max age

—

Healthy volunteers

Inclusion Criteria: * Age ≥ 18 years * Patients classified as ASA physical status I-II-III * Patients scheduled for elective lumbar spine stabilization surgery under general anesthesia * Ability to obtain adequate inferior vena cava (IVC) ultrasonographic imaging * Provision of written informed consent Exclusion Criteria: * Age younger than 18 years * Emergency surgery * American Society of Anesthesiologists (ASA) physical status IV * Patients undergoing revision lumbar stabilization surgery * Baseline systolic blood pressure \>180 mmHg or \<90 mmHg * Heart failure with ejection fraction (EF) \<40% * Pulmonary artery pressure (PAP) \>40 mmHg * Presence of intra-abdominal mass, ascites, or increased intra-abdominal pressure * Body mass index (BMI) \>30 kg/m² * Pregnancy * Patients with neurological or psychiatric disorders * Inability to obtain adequate inferior vena cava (IVC) ultrasonographic imaging * Refusal to provide written informed consent

Primary outcome measure(s)

Inferior Vena Cava Collapsibility Index — Perioperative period (preoperative assessment, after anesthesia induction, and before extubation)
The inferior vena cava (IVC) collapsibility index will be measured using ultrasonography at predefined perioperative time points (preoperative period, after induction of general anesthesia, and before extubation) in patients undergoing elective lumbar spine surgery in the prone position.

Trial sites (2)

Facility	City	Region	Status
Trabzon University Faculty of Medicine Kanunı Training and Research Hospital ,Trabzon	Trabzon	Turkey (Türkiye)	Recruiting
Trabzon University Faculty of Medicine, Kanuni Training and Research Hospital	Trabzon	Turkey (Türkiye)	Recruiting

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Effect of Ultrasound-Guided Quadro-Iliac Plane Block on Postoperative Analgesia After Lumbar Spinal Surgery Recruiting

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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.

View NCT07549165 on ClinicalTrials.gov ↗ ← All trials in Turkey