Explain false positive tests, Biology

Assignment Help:

Q. Explain False Positive Tests?

As ST depression has been equated with CAD, patients with this finding who have less than a critical coronary narrowing has been called false positives. Upon careful scrutiny of these patients, however most are found to have some process or condition that could explain the repolarization abnormality. In a study of 95 patients with ST-segment depression and normal coronary arteries, it was found that only 13 per cent did not have any possible explanation.

Eriksson and Mybre followed up 36 men for 7 years with normal coronary arteries and ST depression. The incidence of cardiac events after seven years was the same in this group as in those who were found to have significant CAD. The investigators believe that many of these patients represent early myocardiopathies and that the ST-segment was due to abnormalities in the vasodilator reserve. It is now known that coronary atheromas that do not appear to be flow limiting may cause decreased perfusion and ischaemia. Thus, the term false positive ST depression should probably be abandoned and replaced with abnormal ST depression of unknown cause.


Related Discussions:- Explain false positive tests

Name the enzyme present in saliva, Name the enzyme present in saliva and sa...

Name the enzyme present in saliva and say what type of food it acts on.   The enzyme in saliva is salivary amylase and it acts on starch.

Define the axons of all the baroreceptors in the body, The axons of all the...

The axons of all the baroreceptors in the body were destroyed at 2 AM. All else is normal.  Which of the following statements is true for the system at 2:10 AM when compared to the

Define the clotting factors, Q. What are clotting factors? Clotting fac...

Q. What are clotting factors? Clotting factors are substances (coenzymes, enzymes, reagents) necessary for the clotting stages to happen. Besides those triggering reagents and

What are the preservation of insulin, What are the Preservation of Insulin ...

What are the Preservation of Insulin Regular insulin is stable for 18 months at 23.8 0 C and Lente insulin are stable for 24 months at this temperature. Although refrigeration

Identifications of a deficit by neuropsychological tests, Identifications o...

Identifications of a deficit by neuropsychological tests Ideometric approach and psychometric approach are the two methods that are used in the identification of deficits by ne

Vacuoles, VACUOLES  Some animals cells may have  one to a few small  fl...

VACUOLES  Some animals cells may have  one to a few small  fluid  filled vacuoles.. Plants  cells  in general  possess one or a few  large vacuoles. Vacuoles  of animals  cells

Is transpiration the only way by which leaves lose water, Is transpiration ...

Is transpiration the only way through which leaves lose water? Plants do not only lose water as vapor, as by transpiration. The leaves also lose liquid water by a phenomenon c

How do chloroplasts multiply, How do chloroplasts multiply? Like mitoch...

How do chloroplasts multiply? Like mitochondria chloroplasts have their own DNA, RNA and ribosomes and they self-replicate through binary division.

Explain about carrier proteins transport substances, How do carrier protein...

How do carrier proteins transport substances across cell membranes? Carrier proteins bind to a molecule of the substance on single side of the membrane, change shape, transpor

Senescence - effects of plant growth regulators, Senescence - Effects of Pl...

Senescence - Effects of Plant Growth Regulators on Development All five major growth regulator groups: auxins, gibberellins cytokinins, abscisic acid and ethylene can influenc

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd