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Ultrasound Measurement of Reactive Hyperemia in Critical Care
NCT01726595 · View on ClinicalTrials.gov ↗
Study Summary
The investigators hypothesize that doctors and nurses can undergo a brief period of training and then use ultrasound to accurately measure blood flow in a forearm artery after a brief period when this flow is interrupted with a blood pressure cuff, a measurement the investigators call reactive hyperemia. Reactive hyperemia indicates whether the small blood vessels in the body are healthy -- lower reactive hyperemia indicates worse small blood vessel function. When measured by experienced ultrasound experts, low reactive hyperemia strongly predicts death in critically ill patients with infection (severe sepsis). The investigators are conducting this study to determine if doctors and nurses, without specific pre-existing expertise in ultrasound, can be trained to make these measurements accurately. If so, the investigators will prove that these measurements can be applied reliably in real-world practice. The investigators also hypothesize that reactive hyperemia predict the outcomes of illness not just in patients with severe infection, but in other critically ill patients as well. Finally, the investigators hypothesize that reduced blood flow after blood pressure cuff occlusion is linked with other abnormalities of blood, previously identified in critically ill patients. For example, red blood cells from patients with severe sepsis have been shown to be stiffer than normal, so they are less able to flow along the small blood vessel passages of the body. Red blood cells become stiffer when there is a certain type of stress in the body known as "oxidative stress." If the investigators show that low reactive hyperemia, stiff red blood cells, and oxidative stress are linked, the investigators hope to develop new treatments that reduce oxidative stress, reduce the stiffness of red blood cells, and in turn improve reactive hyperemia. Improvements in reactive hyperemia indicate improvements in small blood vessel function. Better small blood vessel function means better
Conditions Studied
Study Locations (1)
New York
- University of Rochester Medical Center — Rochester
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 250 participants |
| Start Date | 2013-01 |
| Est. Completion | 2019-12 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT01726595
The ClinicalTrials.gov registry entry for NCT01726595 describes a study currently listed as completed. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 250 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is University of Rochester, which has 437 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 2 conditions, with Critical Illness appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT01726595 reports 1 study location spanning 1 distinct geographic area — top geographies include New York. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT01726595 about?
NCT01726595 is a clinical study titled "Ultrasound Measurement of Reactive Hyperemia in Critical Care". The investigators hypothesize that doctors and nurses can undergo a brief period of training and then use ultrasound to accurately measure blood flow in a forearm artery after a brief period when this flow is interrupted with a blood pressure cuff, a measurement the investigators call reactive hyper...
What is the current status of trial NCT01726595?
This trial is currently completed. The enrollment target is 250 participants. The study started on 2013-01. Estimated completion is 2019-12.
What conditions does trial NCT01726595 study?
This clinical trial studies the following conditions: Critical Illness, Severe Sepsis. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT01726595?
This trial is sponsored by University of Rochester, which has 437 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT01726595 being conducted?
This trial has 1 study location across New York. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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