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Repolarization of the ventricle happens in the opposite direction of depolarization and is negative current, signifying the relaxation of the cardiac muscle of the ventricles. But this negative flow causes a positive T wave; although the cell becomes more negatively charged, the net effect is in the positive direction, and the ECG reports this ...
Performance-enhancing substances (PESs), also known as performance-enhancing drugs (PEDs), [1] are substances that are used to improve any form of activity performance in humans. Many substances, such as anabolic steroids , can be used to improve athletic performance and build muscle, which in most cases is considered cheating by organized ...
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).
In one review, sixty-one percent of pediatric cardiac arrests were caused by respiratory failure and twenty-nine percent by shock, which are both preventable and potentially reversible causes. [14] Thus, to ensure timely care for pediatric patients and improve outcomes, systemic assessment of key symptoms and their severity is essential.
An EP study is typically performed in an EP lab (a specialized cath lab). These are specially equipped operating rooms that usually contain: [3] an x-ray machine capable of acquiring live X-ray video images (a fluoroscope) equipment to record electrical signals from the heart; a stimulator to electrically excite the heart and control the heart rate
Sonographer doing an echocardiogram of a child Echocardiogram in the parasternal long-axis view, showing a measurement of the heart's left ventricle. Health societies recommend the use of echocardiography for initial diagnosis when a change in the patient's clinical status occurs and when new data from an echocardiogram would result in the physician changing the patient's care. [7]
The cardiovascular examination is a portion of the physical examination that involves evaluation of the cardiovascular system. The exact contents of the examination will vary depending on the presenting complaint but a complete examination will involve the heart (cardiac examination), lungs (pulmonary examination), belly (abdominal examination) and the blood vessels (peripheral vascular ...
A process of identifying all of the possible diagnoses that could be connected to the signs, symptoms, and lab findings, and then ruling out diagnoses until a final determination can be made. Diagnostic criteria Designates the combination of signs, symptoms, and test results that the clinician uses to attempt to determine the correct diagnosis.