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Clinical Research Directory

Browse clinical research sites, groups, and studies.

6 clinical studies listed.

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Circulatory Failure

Tundra lists 6 Circulatory Failure clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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NOT YET RECRUITING

NCT07304648

Role of End-Tidal CO2 During Passive Leg Raising to Predict Fluid Responsiveness in ICU

This prospective observational study evaluates whether monitoring changes in exhaled carbon dioxide (End-Tidal CO2 or EtCO2) during a "Passive Leg Raising" (PLR) test can reliably predict fluid responsiveness in critically ill patients. In the Intensive Care Unit (ICU), fluid management is a critical balance; while fluid is necessary for tissue perfusion, overload can lead to severe complications. Traditional static measurements (like central venous pressure) are often unreliable for guiding therapy. Dynamic tests like PLR are preferred as they simulate a fluid bolus reversibly by shifting blood from the legs to the heart. Researchers will observe mechanically ventilated patients planned for fluid resuscitation. The study compares the accuracy of non-invasive EtCO2 changes during PLR against a reference standard "Mini Fluid Challenge" (100 mL fluid administration). Fluid responsiveness will be confirmed using echocardiographic measurements (LVOT-VTI) or arterial pressure changes. The goal is to validate EtCO2 as a practical, real-time tool for safe fluid management.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-26

Circulatory Failure
Critical Illness
Hypovolemia
NOT YET RECRUITING

NCT07206732

IVC Ultrasound Versus Central Venous Pressure for Early Detection of Hypovolemia in Shock Patients

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

Gender: All

Ages: 18 Years - 65 Years

Updated: 2025-11-19

1 state

Shock
Hypovolemia
Circulatory Failure
ACTIVE NOT RECRUITING

NCT06814327

Assessment of Organ Failure Risk Predictions in ICU

During this observational study, the investigators aim to assess the ability of ICU clinicians to predict the risk of impending organ failure and retrospectively compare it to the performance of previously published machine learning models. The central hypothesis of this study is that the treating physician can predict impending organ failure in adult ICU patients with similar accuracy as the best previously publishes machine learning models.

Gender: All

Ages: 18 Years - Any

Updated: 2025-08-28

1 state

Circulatory Failure
Respiratory Failure
Renal Failure
NOT YET RECRUITING

NCT07119411

ICU Background Early Awareness for Critical deterioratiON

The study will compare ICU sub-units, those with additional support of a clinician awareness system, ICU Beacon, and those receiving the standard of care. The win-ratio composite outcome will be assessed by comparing patients by study group and stratified by APACHE score at admission.

Gender: All

Ages: 18 Years - Any

Updated: 2025-08-13

Respiratory Failure
Circulatory Failure
Mortality
+2
RECRUITING

NCT06442267

Comparing Anticoagulation Strategies Using UFH, Argatroban and LMWH for ECMO Support

A three-arm randomized controlled non-inferiority pilot study comparing anticoagulation strategies using unfractionated heparin, argatroban and enoxaparin for extracorporeal membrane oxygenation support conducted as an investigator-initiated, prospective, parallel group, open-label, active comparator controlled, single center, phase IV study to evaluate the non-inferiority of enoxaparin or argatroban for anticoagulation during ECMO therapy in comparison to the current standard, unfractionated heparin, as measured by the incidence of thromboembolic events during the duration of ECMO therapy

Gender: All

Ages: 18 Years - Any

Updated: 2024-10-29

1 state

Respiratory Insufficiency
Circulatory Failure
Thromboembolism
+1
RECRUITING

NCT06285331

the Impact of Manual or Mechanical Ways to Perform PLR on the Accuracy of Evaluation of Fluid Responsiveness

Our goal was to study the impact of different ways to perform passive leg raising (PLR) on the accuracy of evaluation of fluid responsiveness.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2024-05-21

1 state

Circulatory Failure