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

What is single cross between two mountain rabbits, In mountain rabbits, the...

In mountain rabbits, the EL-1 gene is located on chromosome 3. Seven alleles of this gene have been identified in the population. With respect to EL-1, what is the maximum number o

What is subxiphoid short axis sweep, Q. What is Subxiphoid Short Axis Sweep...

Q. What is Subxiphoid Short Axis Sweep? To obtain the subxiphoid short axis view transducer should be rotated by 90 degree clockwise, fi-om the previous position so that p

Explain homologous and heterologous immunoglobulins, What is the difference...

What is the difference between homologous and heterologous immunoglobulins? Homologous immunoglobulin is the human (from the similar species) immunoglobulin. In case of inocula

Explain about vitamin C, Vitamin C (Ascorbic acid) Vitamin C, ascorbic ...

Vitamin C (Ascorbic acid) Vitamin C, ascorbic acid is also called anti-scorbutic vitamin. Ascorbic acid occurs as white crystals or white crystalline powder without odour and o

Classification of fishes, Q What are the two major classes into which fishe...

Q What are the two major classes into which fishes are divided? Ans. Fishes are divided into two major classes: osteichthyes, bony fishes (tuna, sardines, salmons) , and chondr

Explain prophylaxis - fungal infection, Prophylaxis   High-risk neutrope...

Prophylaxis   High-risk neutropenic patients, such as those undergoing allogeneic and certain autologous stem cell transplants, and those with hematologic malignancy who are exp

Define metabolic aberrations and clinical manifestations, Define Metabolic ...

Define Metabolic Aberrations and Clinical Manifestations? The state of obesity brings about certain alterations in the normal body processes which are enumerated herewith and h

Types of blood vessel, Types of Blood Vessel Arteries Arteries ca...

Types of Blood Vessel Arteries Arteries carry blood away form the heart via the pulmonary artery and aorta. Arterioles As major arteries begin to branch , th

Determine nutritional requirements in hot environments, Determine Nutrition...

Determine Nutritional Requirements in Hot Environments? Hot environments may be of two types: dry hot, as in the case of deserts or hot and humid in tropical rain forests and c

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