NCT07279064

Central Venous Pressure Versus Inferior Vena Cava Distensibility Index in Assessing Fluid Responsiveness in Septic Shocked Patients

Comparison of Central Venous Pressure and Inferior Vena Cava Distensibility Index in Assessing Fluid Responsiveness in Septic Shocked Patients

• Status: Not Yet Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 70 (estimated)
• Sponsor: Assiut University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: —

Summary

This study aims to compare ultrasound-guided inferior vena cava distensibility index(IVC\_DI) assessment with central venous pressure (CVP) monitoring for the detection of hypovolemia in septic shocked patients in the emergency department. The primary objective is to evaluate the diagnostic accuracy and clinical utility of IVC distinsisibility index compared to CVP values in both early and post- resuscitation phases. The study will prospectively enroll septic shocked patients, collect demographic and clinical data, and analyze the correlation between IVC DI and CVP measurements to determine their role in guiding fluid resuscitation and hemodynamic management

Detailed description

Sepsis and septic shock remain among the leading causes of morbidity and mortality in intensive care units worldwide. Septic shock is defined as a subset of sepsis characterized by profound circulatory, cellular, and metabolic dysfunction, associated with a high risk of death despite adequate fluid resuscitation, vasopressor support, and infection source control. The cornerstone of early septic shock management is hemodynamic resuscitation, with intravenous fluids serving as the first-line therapy to restore effective circulating blood volume, improve cardiac output, and optimize tissue perfusion. However, while adequate fluid administration is lifesaving, excessive fluid loading can be detrimental, leading to interstitial edema, impaired oxygen delivery, increased intra-abdominal pressure, and pulmonary edema that may worsen outcomes. Therefore, precise identification of patients who are "fluid responsive" is of paramount clinical importance. A direct comparison between CVP (as a traditional, static marker) and IVC distensibility index (as a dynamic marker) in patients with septic shock is essential to determine their relative value in guiding fluid resuscitation. This study aims to evaluate and compare the predictive accuracy, feasibility, and clinical applicability of these two parameters as tools for identifying fluid responsiveness in septic shock patients. The results may provide valuable insight into optimizing fluid resuscitation strategies, minimizing fluid overload, and ultimately improving patient outcomes.

Conditions

• Central Venous Pressure and Inferior Vena Cava Distensibility Index in Assessing Fluid Responsiveness in Septic Shocked Patients

Interventions

Type	Name	Description
DEVICE	Ultrasound guided inferior vena cava distensibility index	This intervention involves bedside ultrasound measurement of the inferior vena cava (IVC) diameter and calculation of the IVC distensibility index. Assessments will be performed both at initial presentation and after fluid resuscitation in shock patients. The procedure is non-invasive, rapid, and performed according to standardized emergency ultrasound protocols.

Timeline

• Start date: 2026-01-01
• Primary completion: 2027-10-01
• Completion: 2027-10-01
• First posted: 2025-12-12
• Last updated: 2025-12-12