Functional Assessment
Functional Assessment - Related Videos
05:41
Non-invasive Assessment of Microvascular and Endothelial Function
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Cited by 12 •
2013
Capillaroscopy is a non-invasive, relatively inexpensive methodology for directly visualizing the microcirculation. The forearm blood flow technique provides accepted non-invasive measures of endothelial function.
10:32
Assessing Functional Performance in the Mdx Mouse Model
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Cited by 184 •
2014
The primary outcome measure in clinical trials for neuromuscular disorders is generally improved muscle function. Therefore, assessing the effect of potential therapeutic compounds on muscle performance pre clinically in mouse models is of great importance. We here describe several functional tests to address this.
07:31
A Computerized Functional Skills Assessment and Training Program Targeting Technology Based Everyday Functional Skills
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Cited by 9 •
2020
This training protocol uses computerized training to teach technology-related everyday functional skills. These skills include financial skills, travel and transit, as well as medication management.
08:50
Assessment of Vascular Function in Patients With Chronic Kidney Disease
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Cited by 25 •
2014
The degree of vascular dysfunction and contributing physiological mechanisms can be assessed in patients with chronic kidney disease by measuring brachial artery flow-mediated dilation, aortic pulse-wave velocity, and vascular endothelial cell protein expression.
07:46
Assessing Endothelial Vasodilator Function with the Endo-PAT 2000
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Cited by 165 •
2010
A noninvasive procedure to assess endothelial function is demonstrated using the Endo-PAT 2000.
FAQs
A useful endpoint should directly reflect the role the system is expected to perform and should be measurable under defined conditions. Depending on the design, investigators may examine cell behavior, tissue activity, biomaterial performance, or device operation. Selecting endpoints that correspond to intended function allows observed results to be compared meaningfully with expected performance or reference controls.
Controlled stimuli and operating conditions make it possible to interpret a system’s response in relation to a defined challenge or use condition. They help distinguish functional behavior from responses caused by uncontrolled changes in the environment. This approach is especially relevant when evaluating engineered tissues, materials, or devices whose performance may depend on physiological measurements or specified operating conditions.
Failure modes become visible when measured responses diverge from expected performance or from reference-control results. Examining these discrepancies can show whether a cell-based, tissue-based, material-based, or device-based system is not fulfilling its intended role. The findings guide design optimization by linking a specific functional shortcoming to the performance requirements that need improvement.
Functional Assessment focuses on what a biological or engineered system does, rather than only documenting which components are present. A construct may contain the intended cells, tissue features, or materials yet still perform inadequately. Measuring functional endpoints under controlled conditions therefore provides evidence about activity, operation, or performance that structural or compositional observations alone cannot establish.
The workflow begins by defining the intended role and measurable functional endpoints. Investigators then apply controlled stimuli or operating conditions, collect quantitative assays or physiological measurements, and compare the observed responses with expected performance or reference controls. Interpreting those comparisons supports validation, reveals failure modes, and identifies changes needed for subsequent design optimization.
The measurement strategy depends on the system being tested. Quantitative assays can assess relevant cellular or tissue responses, while physiological measurements can characterize activity or operation under defined conditions. For biomaterials and devices, performance measurements may be more appropriate. In each case, the selected readout should connect directly to the intended function and provide a basis for comparison.
It is used to validate designs, compare performance with expected behavior, and determine whether a system is suitable for its intended stage of development. Applications include evaluating cell behavior, tissue activity, biomaterial performance, and device operation. These results can support research decisions, therapeutic development, and assessment of potential clinical translation.
Assessment results provide evidence about whether an engineered system performs its intended role under defined conditions. Agreement with expected performance can support continued development, whereas discrepant results may reveal failure modes requiring optimization. For systems being considered for therapeutic or clinical use, this functional evidence helps determine whether the design is sufficiently supported for further translation.