What do you mean by qrs changes, Biology

Assignment Help:

Q. What do you mean by QRS Changes?

The total amplitude of the QRS compared with exercise usually decreases near peak workload, as well as the T-wave amplitude, and there is a tendency towards right axis deviation. The QRS duration does not change significantly. If the stroke volume increases the T-wave may initially increase, which occurs early in exercise with moderate workloads. A decrease in R-wave is more likely to be seen immediately after the exercise period, however, rather than during it. When considering the QRS in the various leads during maximum exercise, there is a tendency towards a reduction in R-wave or S-wave amplitude; this is more marked in normal than in abnormal subjects. The decreased amplitude following a peak exercise period may be due to decrease in systolic and possibly diastolic volumes that often develop after peak cardiac output is attained.

This is termed the body effect, and found that left ventricular forces decreases stroke volume decrease and that right ventricular forces usually increase at the same time. In ischaemia, the systolic volume increases stroke volume decreases and the left ventricular R-waves any become taller.


Related Discussions:- What do you mean by qrs changes

Increase in the divcat conductance of neuron b, Consider Neuron B in the fr...

Consider Neuron B in the frog central nervous system whose plasma membrane has a previously unknown channel that is selectively conductive to a newly discovered divalent cation nam

Write the blood sugar in normal range and range in diabetes, Q. Write the b...

Q. Write the blood sugar in normal range and range in diabetes? Normal           Diabetes mellitus >126 mg / dl >200 mg / dl

Homomorphic types - intra specific incompatibility, Homomorphic Types - Int...

Homomorphic Types - Intra specific Incompatibility It is characterized by morphologically indistinguishable mating types within a species. A proper breeding is required for th

How sugar play a major role in preservation, How sugar play a major role in...

How sugar play a major role in preservation? In so many products, sugars play a major role in preservation. The addition of monosaccharides, like glucose or fructose, to jams a

Define hepatic triglyceride synthesis, Q. Define Hepatic Triglyceride Synth...

Q. Define Hepatic Triglyceride Synthesis? Fatty acid flux to the liver from adipose tissue appears to be an important determinant of hepatic triglyceride synthesis and VLDL sec

What''s the diffrence between regeneration and repair, What's the diffrenen...

What's the diffrenent between regeneration and repair ?  Regeneration: replacement of the destructed tissue by the same type of tissue  Repair : replacement of the destru

Clinical features - rheumatic fever, The American Heart Association (AHA) h...

The American Heart Association (AHA) has recommended the revised Jones Criteria as a guide for ARF diagnosis. The same have been approved by WHO study group for the diagnosis of in

Define corneal scar - micronutrient deficiencies, Define Corneal Scar - Mic...

Define Corneal Scar - Micronutrient Deficiencies? The corneal ulcer, on healing, leaves a white scar, which may vary in size depending upon the size of the ulcer. When the scar

Phylem porifera, please give us this phylem''s example...

please give us this phylem''s example...

What is the normal duration of the menstrual cycle, What is the normal dura...

What is the normal duration of the menstrual cycle? How does the calendar contraceptive method work? The normal duration of the menstrual cycle is 28 days but it can vary betwe

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