Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. What are changes in ST-Segment?
Normal Exercise Electrocardiogram ST and J Point
As the heart rate increases with exercise, a number of predictable changes occur in a normal ECG tracing. The PR-interval is shortened after 1 minute of exercise. The P-wave becomes taller and the Ta wave (wave of atrial repolarisation) increases, resulting in downward displacement of the PQ junction. This is particularly important because the so called baseline, for terms of evaluating ST-segment change, is below that usually considered to be isoelectric tracing. With exercise, the Ta wave tends to extend through the QRS and may influence that junction between the ST-segment and the T-wave.
Prognostic Significance
Asymptomatic patient-Abnormal test prevalence 5 to 12 per cent. Risk of event-9 times greater in abnormal test. 2 per cent event rate (angina) over 4 year follow up. BLS study - with risk factors- elderly patient - event rate varies 3.5 per cent to19 per cent in 9 years follow up. Females- 15 per cent to 20 per cent prevalence-less prognostic value.
Symptomatic Patient: Case Study
First stage positive: 5 per cent annual mortality, Low risk group: < 1 per cent annual mortality. It has become standard practice to use the line of PQ or PR junction as a marker for the baseline when the ST-segment is measured at one fourth the distance between the QRS and peak T in left to right leads, considerable depression is normally seen. The anterior posterior lead changes (V1 to V2) are less prominent than those in the lateral and vertical leads. The absence of significant ST-segment depression in young, vigorous boys and in athletic, middle aged men, suggests that the effect of the Ta wave, can usually be recognized because of the short duration (usually 0.045) of the J point depression.
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
What is the initial concentration of Beta-adrenergic receptor in blood?
The Jones family was caught in a fire but escaped. Unfortunately the father and daughter suffered burns. The father had second degree burns on his chest, abdomen, and both arms, an
Q. Explain about Lactose Intolerance? We commonly hear from people of all age groups, particularly children and elderly to be complaining of abdominal discomfort after consumin
Define the Goals of treatment of Obesity? As said in the beginning, the goal of treatment of obesity today has shifted from mere 'weight loss' to 'weight management'. Each weig
Providing Critical Resources - Conservation of Wildlife Another way to improve the habitat of a threatened species is to determine which resource is limiting the population si
Q. Since the visual images are projected in an inverted manner on the retina why don't we see things upside down? Since the crystalline lens is a convex spherical lens it forms
ADAP T A TIO N - Characters that make an organism to adjust well and suited to its way of life. Variation occur in living organism due to change in environment. Th
Explain Alkaline Butt -carbohydrate utilization pattern test? Alkaline slant (red) and alkaline butt (red) or no change (orange-red) butt- Instead of carbohydrates, peptone in
Explain about the Bioavailability of Minerals? Polyphenols can form complexes with metal cations through their carboxylic or hydroxylic groups, and thus interfere with the inte
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd