St depression only on recovery, Biology

Assignment Help:

Q. ST Depression only on Recovery?

Although ST depression during exercise often persists into recovery, it may not manifest until exercise has been terminated. The reasons for this are still not clear but the phenomena have been studied by several investigations. ST depression occurring in recovery only has the same significance as exercise induced ST changes.

Time Course of ST Depression

It has long been recognized that when ST depression comes on early at low workloads the degree of ischaemia is likely to be more severe. It has long been taught, when ST depression comes on at high workloads, but resolves very quickly after exercise, it constitutes a false positive ST depression. However, it has been found that significant CAD was more common than not, at least in those who were referred for angiography. As might be expected, patients with early onset, late offset ST depression usually had severe disease. Group of patients with resting ST depression increased with exercise, was found to have severe disease. It has often been stated that these patients should not be tested because the results would include a large number of false positives.

This might be true if the patients are asymptomatic, but certainly does not pertain to those who have anginal chest pain. It must be cautioned that not all patients with rapid resolution of ST depression during recovery have normal coronary arteries.


Related Discussions:- St depression only on recovery

Kidney function test, Kidney impairment is one of the long term complicatio...

Kidney impairment is one of the long term complications of diabetes mellitus. Measurement and monitoring of kidney function parameters such as urea and creatinine, in addition to u

Leishmanias – flagellates, Leishmanias – Flagellates Species of the ge...

Leishmanias – Flagellates Species of the genus Leishmania are parasites of mammals including man. Leishmanias infections occur over wide regions of the world from Asia, the ne

Define assessment of manganese status, Define Assessment of Manganese Statu...

Define Assessment of Manganese Status? The body Mn status has not been yet established by laboratory tests. Though the normal range of serum Mn concentration is found out to b

Ecology, importance of pyramid of energy to the ecologist

importance of pyramid of energy to the ecologist

Anterior leaflet procedure-technique of operation, Anterior Leaflet Procedu...

Anterior Leaflet Procedure: Repair is more difficult and less successful. Previously, a triangular excision of the anterior leaflet used to be done for prolapse and rupture of

What are primary indications for pharmacologic stress, Q. What are primary ...

Q. What are primary indications for pharmacologic stress? The primary indications for pharmacologic stress are inability to exercise or the desire to identify viable myocardium

Classifying organisms, Classifying Organisms You have now seen that th...

Classifying Organisms You have now seen that the binomial nomenclature gives each species a unique and unambiguous name. It is necessary lo group species into genera and gener

Uterine torsion, Uterine Torsion Incidences of uterine torsions in cat...

Uterine Torsion Incidences of uterine torsions in cattle and buffaloes are not common. However, they are very common in heavy breeds and buffaloes and animals in slopy terrain

What is determined by tube feet, What is determined by tube feet? Hollo...

What is determined by tube feet? Hollow and fluid-filled tubes which are part of the water vascular system in Echinoderms. Muscles associated with tube feet allow them to be hy

A plant growing on a mountainside, What two abiotic factors might affect (a...

What two abiotic factors might affect (a) an animal living at the bottom of the sea, (b) a plant growing on a mountainside?   (a) The abiotic factors which might

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