Atrial fibrillation or flutter, Biology

Assignment Help:

Q. Atrial Fibrillation or Flutter?

Transient atrial fibrillation or flutter is seen frequently and can be associated with CAD, rheumatic heart disease, thyrotoxicosis, or myocarditis. It is also seen in people of all ages who have no other abnormalities. Upon testing a subject with atrial fibrillation or further, the ventricular response tends to accelerate very rapidly, probably due to inadequate left ventricular filling resulting in a decreased stroke volume. The ST-segment changes associated with ischaemia are similar to those observed with a sinus rhythm and may be seen in rheumatic heart disease and other cardiac abnormalities. In these cases, the ST-segment depression may indicate left ventricular dysfunction due to primary muscle changes rather than coexisting CAD. In addition the very short diastolic intervals may produce subendocardial ischaemia because of inadequate perfusion time in the face of an otherwise normal ventricular function. When atrial fibrillation or flutter is initiated by exercise, it does not necessarily implicate CAD as the underlying cause, although this is often the primary factor in older subjects.

554_Atrial Fibrillation or Flutter.png


Related Discussions:- Atrial fibrillation or flutter

Morphological changes - floral induction, Morphological Changes - Floral In...

Morphological Changes - Floral Induction Some of the morphological changes that accompany floral induction are: Change in the shape of meristem, Increase in the ra

Of which type of defense cell do viral infections, Of which type of defense...

Of which type of defense cell do viral infections stimulate the multiplication? The major leukocytes that generally multiply and participate in the defense against viral infect

Reagents for determination of saponification number of fats, Define Reagent...

Define Reagents for Determination of the Saponification Number of Fats? 0.5 N alcoholic KOH 0.5 N HCI Solid sodium carbonate 1% alcoholic solution of methyl orange

What volume of 19 m formic acid need in experiment, You are interested in u...

You are interested in using formic acid (pKa = 3.75) as a buffer for your biochemical Experiment. a) Would it be most useful for creating a buffered solution at pH 2, 4 or 6? Ex

Methods and Vectors, Match each of the methods or vectors below to an appro...

Match each of the methods or vectors below to an appropriate form of gene therapy, assigning two methods or vectors to each form. Use each method or vector only once. Methods/vec

Respiratory system, 1. Considering the nature of negative-feedback control ...

1. Considering the nature of negative-feedback control and the function of the respiratory system, what effect do you predict that a decrease in CO2 in the internal environment wou

Mechanoreceptors - receptors, Mechanoreceptors - Receptors Mechanorece...

Mechanoreceptors - Receptors Mechanoreceptors involve those receptors involved in perception of touch, pressure, tension, hearing, vibration, gravity, muscle tension etc. Th

Can you explain restrictive ventricular septal defect, Q. Can you explain ...

Q. Can you explain Restrictive Ventricular Septal Defect ? VSD is restrictive when VSD pressure gradient is more than 60mmHg (systolic cuff pressure-VSD lpressure grad

Assessment of development in children, Assessment of Development in Childre...

Assessment of Development in Children The development of a child is studied through various responses which he exhibits following a natural or experimental stimulus. Basical

Anatomical coordinate systems, Brain anatomical coordinate systems are the ...

Brain anatomical coordinate systems are the first potential point of confusion, as there are different ones due to the fact that research is conducted in different species where d

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