IVC Collapsibility Index in Lumbar Stabilization Surgery
Hemodynamic Assessment Using the Inferior Vena Cava Collapsibility Index in Patients Undergoing Lumbar Stabilization Surgery
Trabzon Kanuni Education and Research Hospital
128 participants
Feb 15, 2026
OBSERVATIONAL
Conditions
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
Inclusion Criteria5
- 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 Criteria13
- 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
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Locations(2)
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NCT07549165