Ardms Rvt Exam Certification Evaluation Comprehensive Assessment

ARDMS RVT EXAM CERTIFICATION
EVALUATION COMPREHENSIVE
ASSESSMENT

⫸ Negative Predictive Value (NPV). Answer: The probability that a
patient with a negative test result really is free if disease.
D/D+C


⫸ Sensitivity. Answer: The ability of a test to detect disease when
disease is present.
A/A+C


⫸ Specificity. Answer: The ability of a test to correctly identify a
normal result.
D/D+B


⫸ Accuracy. Answer: The overall percentage of correct results. The
degree of "closeness" to something to its actual value.
A+D/A+B+C+D


⫸ True Positive. Answer: The number of tests that say disease is present
and the gold standard agrees.
A

, ⫸ True Negative. Answer: The number of tests that say disease is not
present that the gold standard agrees with.
D


⫸ False Positive. Answer: The number of tests that say disease is
present but negative by the gold standard.
B


⫸ False Negative. Answer: The number of tests that say disease is not
present but the gold standard says it is.
C


⫸ Reliability. Answer: The consistency of obtaining similar results
under similar circumstances. Accuracy over a period of time.


⫸ ABI - Ankle Brachial Index. Answer: The ratio of the ankle systolic
pressure to the highest brachial systolic pressure.
Indicates the severity of PAOD.


⫸ ABI = > 1.30. Answer: Incompressible


⫸ ABI = .90 to 1.30. Answer: Normal