An interventional study of Vitalstream in Cardiac Output, Low and Stroke Volume, sponsored by Wake Forest University Health Sciences. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-08-12.
Sponsored by Wake Forest University Health Sciences · Not applicable, Interventional, and Other
The purpose of this study is to validate cardiac output and stroke volume derived from Vitalstream against Gold Standard measurements obtained using thermodilution. The Vitalstream device is a continuous noninvasive physiological monitor (Caretaker Medical LLC, Charlottesville, Virginia, further referred to as "CTM") provides heart rate, continuous noninvasive blood pressure (BP), respiratory rate, stroke volume and cardiac output.
The device is currently undergoing IEC 60601 Medical Safety Standards testing and has already passed all FDA-required emission and discharge testing. The Vitalstream tracks central aortic BP via pulse analysis, specifically Pulse Decomposition Analysis ("PDA"), of the peripheral pulse at a distal site, typically finger. The device uses a low pressure [30-40 mmHg], pump-inflated, finger cuff that pneumatically couples arterial pulsations via a pressure line to a custom-designed piezo-electric pressure sensor for detection and analysis. Physiological data are communicated wirelessly to a tablet-based user interface via Bluetooth. The Vitalstream monitor is most beneficial as it is non-invasive, is a minimal risk device, and for this protocol will not be utilized to make treatment decisions for the study subject.
94 studies on the registry are indexed under Cardiac Output, Low; 15 are open to participants now.
This study's enrollment of 58 is below the median of 65 across 46 interventional studies indexed under Cardiac Output, Low.
Browse Cardiac Output, Low studies →Wake Forest University Health Sciences is the lead sponsor of 1,320 studies on the registry; 199 are open to participants now.
Of its 323 completed or terminated interventional studies of FDA-regulated products, 243 (75%) have results posted.
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Exclusion Criteria:
Device placed on the subject preoperatively in the holding room and continued postoperatively into the Cardiac Intensive Care Unit (ICU).
Device: Vitalstream
The device will be placed on the subject and monitoring started in the holding room on the morning of surgery. Monitoring will continue postoperatively until the pulmonary artery catheter (PAC) is removed (Standard of Care) or discharged, or at study team discretion. At Intensive Care Unit (ICU) admittance and again 3 hours later a straight leg raise will be done to monitor for changes in hemodynamics.
Cardiac output values
Cardiac output values correlation of cardiac output between the PA catheter as assessed by the CCO and the VitalStream - the amount of blood pumped by the heart minute - Cardiac output is calculated by multiplying stroke volume with heart rate - Cardiac output in humans is generally 5-6 L/min in an at-rest to more than 35 L/min in elite athletes during exercise. HR is determined by signals from the sinoatrial node, which automatically depolarizes at an intrinsic rate of 60 to 100 times each minute - Low-output symptoms are caused by the inability of the heart to generate enough cardiac output. This leads to reduced blood flow to the brain and other vital organs
Time frame: hour 24
Blood pressure values
correlation of blood pressure continuously being monitored by the Vitalstream and the subjects indwelling arterial line
Time frame: hour 24
Assessment of fluid responsiveness changes
Assessment of fluid responsiveness using a passive leg raising test (PLR) maneuver, within 1 hour of ICU admission and 3 hours later. We will access fluid challenge using the fluid challenge timer feature on the VitalStream, by doing serial assessments before and after each passive leg raising test. PLR is a simple bedside technique that can be used to assess fluid responsiveness. This maneuver can be used as a pseudo-fluid challenge of an approximately of 150-300 mL by placing patient head down flat and feet up at a 45° angle. Blood from the lower extremities translocate to intrathoracic compartment where the right and left ventricular preload increases and if the patient is responsive increases SV and cardiac output. An increase in SV of more than 10% indicates the patient is preload responsive with the high sensitivity and specificity.
Time frame: Hours 1 and 3
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Plan to share: No
This study is completed, as verified in Feb 2025. You cannot join it, but the record below documents what was studied.
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Wake Forest University Health Sciences