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.
What is a bio regenerative system? Why is it essential? Nutritional requirements for long flights have been refined, placing more demands on food development. Despite the techn
DISORDERS OF LIVER: In the foregoing sections and sub-sections we have discussed about the common disorders of upper and lower gastrointestinal tract. Now we shall discuss
what is anotmy
MOLECULAR MECHANISM OF HORMONE ACTION - Once a hormone enters the bloodstream it can reach almost any cell in the body. However, each hormone affects only certain kinds of c
Q. What is the difference between lungs and gills? Lungs and Gills are richly vascularized organs that serve for gas exchange between the environment and the circulatory system
GERENAL CHARACTERICS OF PHYLUM ANNELIDA
Biodiversity provides us with life -sustaining services. As discussed below, these ecosystem services have a much higher value than most people realize. At the ecosystem level, bio
All tissues have some capability for synthesis of the non-essential amino acid remodeling, amino acids and conversion of non-amino acid carbon skeletons into amino acids and other
Explain the Cardiac Cycle of human body? The different stages of a heart pumping cycle are referred to as follows: contraction of the ventricles is called systole, and relaxati
Penetrating Injury Open pneumothorax (sucking chest wound) Hemothorax Tracheobrochiaf injury Pulmonary contusion Mediastinal injury
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