Medicine
Alfred Atlinkson
Abstract
When a coronary artery narrows or closes, the area of the heart through which the artery is lubricated becomes ischemic and damaged, and a heart attack may occur. Oxygen is directly related to heart activity. The more active the heart, the greater the need for oxygen, and the coronary artery blood flow ...
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When a coronary artery narrows or closes, the area of the heart through which the artery is lubricated becomes ischemic and damaged, and a heart attack may occur. Oxygen is directly related to heart activity. The more active the heart, the greater the need for oxygen, and the coronary artery blood flow is adjusted according to the heart muscle's need for oxygen. The heart muscle consumes about 65% of the oxygen in the coronary artery, while other tissues in the body consume a maximum of 25% of the oxygen in the blood of the coronary artery. Also, unlike other tissues in the body, 75% of the heart muscle blood is supplied at rest by diastole of the heart. The coronary arteries are responsible for supplying blood to the heart muscle. The right and left coronary arteries branch from the aorta just above the aortic valve, then enter the heart and supply blood to the capillaries of the heart muscle. The two grooves meet at the posterior region of the heart in a place called the CRUX, where the AV group is located. If the RCA supplies blood to the cortex, these people are called the dominant right. The descending RCA branch intoxicates the left posterior muscle. Approximately 18% of people with CCA and RCA donate blood to the heart crocus, in which case it is called a balanced arterial pattern.
Covid
Mahmoud Ali Hassan
Abstract
Shows the axis of the heart to propagate depolarization that extends into the heart to constrict the myocardium. In fact, the heart axis shows the direction in which most electrical stimuli move. When you read electrocardiograms, the heart axis indicates the direction of propagation of the stimulus. ...
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Shows the axis of the heart to propagate depolarization that extends into the heart to constrict the myocardium. In fact, the heart axis shows the direction in which most electrical stimuli move. When you read electrocardiograms, the heart axis indicates the direction of propagation of the stimulus. In addition, the direction of the heart axis indicates many disorders and changes in the heart. Usually at least two derivations are required to determine the axis. Algebraic sum is used to calculate the positive and negative of the QRS complex. For example, if the complex has a long R and a short S, count the number of cells occupied by R on the electrocardiogram paper vertically and count it as a positive digit, and count the number of negative cells as a negative digit. We put and then calculate its algebraic sum. If the biphasic complex is one and its size S and Rare exactly equal, the algebraic sum will be zero, which is why in this derivation the electric force is equal on both sides, so it is at the central point. But if the algebraic sum is a positive or negative numerical derivation, that is, the corresponding derivation line is deviated in the positive or negative direction. To determine the axis, it is usually best to see which of the 6 organ derivatives is biphasic, and then find the derivative perpendicular to it, the best lead being the AVF lead perpendicular to the D1 lead or the AVL lead perpendicular to the D2 lead and the AVR lead It is perpendicular to the D3 lead, the most common being the first. Examining an EKG will show that as the location of the positive electrode in the breast derivatives changes sequentially.
Covid
Dinami.H Birman
Abstract
This study investigated the effects of Covid-19 on body postures. Specialists around the world are now conducting clinical trials and research to understand why some patients recovering from Covid-19 have long-term complications. The coronavirus primarily affects the respiratory system and can cause ...
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This study investigated the effects of Covid-19 on body postures. Specialists around the world are now conducting clinical trials and research to understand why some patients recovering from Covid-19 have long-term complications. The coronavirus primarily affects the respiratory system and can cause pneumonia and endanger human life. Other research shows that the disease can cause blood clots and inflammation in many parts of the body, and even in mild cases. Covid-19 can also be seen. This indicates the great need to take care of yourself against the disease. The recovery time from Covid-19 disease varies from person to person. Many people feel better in a few days or weeks, and most will recover within 12 weeks, but in some people, the symptoms may last longer. The likelihood of long-term symptoms does not appear to be related to how the disease occurred when you first contracted the coronavirus, and people who have experienced mild Covid-19 may also have long-term symptoms. The corona virus, especially its newer form, the delta corona, does not only attack the lungs; The heart, kidneys, brain, arteries, nerves, and skin are other organs that have been shown to affect the function of a new mutation in the Covid-19 virus.
