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

What are the etiological agents of malaria, Q. What are the etiological age...

Q. What are the etiological agents of malaria? The etiological agents of malaria are protozoans of the genus Plasmodium. There are four different kinds of plasmodia that cause

Pluripotent scs:grouping of stem cells, Pluripotent SCs : Characterizing...

Pluripotent SCs : Characterizing more restricted abilities for differentiation.their sources are some celles blastocyst (5-14 days) embroys, so can from over 200 cells types i.e

Sedge-meadow stage - hydrarch, Sedge-Meadow Stage - Hydrarch Favoured ...

Sedge-Meadow Stage - Hydrarch Favoured by an increasing amount of light, as the former occupants disappear, they gradually change the reed swamp into a sedge meadow. And now s

Define procedure for gram staining of bacterial cultures, Define Procedure ...

Define Procedure for Gram Staining of Bacterial Cultures? Now carry out the exercise following the steps enumerated herewith: 1. Label the nutrient agar plates with the name

What is intermittent treatment, Intermittent Treatment Intermittent 4...

Intermittent Treatment Intermittent 4-drug regimens with 2 or 3 doses per week after at least 2 weeks of daily therapy are also effective for treatment of TB and should alway

What is the functional unity of the kidneys, Q. What is the functional unit...

Q. What is the functional unity of the kidneys? The functional (filtering) unity of the kidneys is the nephron a nephron is made of efferent arteriole, afferent arteriole, glom

Bilateral cleavage, Bilateral Cleavage In some animals (for example tu...

Bilateral Cleavage In some animals (for example tunicates and nematodes, although in different way), the arrangement of 4 blastomeres after second cleavage is almost radially

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