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

Cell theory, Cell Theory The term cell was first used by an English cyt...

Cell Theory The term cell was first used by an English cytologist, Robert Hooke (1665) not for unit protoplasmic masses, but for the well defined and empty compartments, he obs

Types of gonads, Types of Gonads The gonads of vertebrates can be clas...

Types of Gonads The gonads of vertebrates can be classified into the following two types Mammalian type and Non-mammalian type. They differ from

Explain the cladosporium - fungi and yeast, Explain the Cladosporium - Fung...

Explain the Cladosporium - Fungi and Yeast? Classification Kingdom - Mycetae Division - Amastigomycota Form - Class - Deauteromycetes Form - Order - Moniliales F

Why plant nutrients is said to be essential, Why plant nutrients said to be...

Why plant nutrients said to be essential An element is said to be essential if,   (i)   The deficiency of an element in plant, makes it impossible to complete the vegetative

What is vision, What is vision? Why is vision important for life on earth? ...

What is vision? Why is vision important for life on earth? Vision is the ability of some living beings to perceive, to differentiate and to interpret luminous stimuli. Visio

Precautions for morphological characteristics of yeast cells, Precautions f...

Precautions for Morphological Characteristics of Yeast Cells? 1. Observe aseptic conditions. 2. Use only a small sample for staining. 3. No air bubbles should be in the s

Describe the structure of body wall of ascaris, Question 1 Write a short n...

Question 1 Write a short note on the following                           1 Class polychaeta

Explain class adverse effects of nnrti, Class adverse effects of NNRTI ...

Class adverse effects of NNRTI All NNRTIs can cause a rash that is sometimes severe. NNRTIs are metabolized by and can affect hepatic CYP 450 isozymes; drug interactions can o

Bacteria and archea, Based on the scientific name. Streptococcus agalactia...

Based on the scientific name. Streptococcus agalactiae what morphology would you expect these cells to have?

Define simple, Define Simple, Compound, Derived Lipids? Simple lipids ...

Define Simple, Compound, Derived Lipids? Simple lipids are fatty acid esters of glycerol, called triacyglycerols or triglycerides (for e.g. fats and oils) or higher alcohols (

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