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Recording of the Electrogastrogram can be made from either the gastrointestinal surface mucosa, serosa, or the external skin surface.The cutaneous electrogastrography provides an indirect representation of the electrical activity, that has been demonstrated in numerous studies to exactly correspond to simultaneous recordings of the mucosa or serosa.
Electrocardiography is the process of producing an electrocardiogram (ECG or EKG [a]), a recording of the heart's electrical activity through repeated cardiac cycles. [4] It is an electrogram of the heart which is a graph of voltage versus time of the electrical activity of the heart [5] using electrodes placed on the skin.
According to V. Gorshkov-Cantacuzene: "The U wave is the momentum carried by the blood in the coronary arteries and blood vessels". [4] [5] [6]The resistivity of stationary blood is expressed as () = | (+), where is a coefficient, and is the hematocrit; at that time, as during acceleration of the blood flow occurs a sharp decrease in the longitudinal resistance with small relaxation times.
The shape forms an inverted equilateral triangle with the heart at the center. It is named after Willem Einthoven, who theorized its existence. [2] Einthoven used these measuring points, by immersing the hands and feet in pails of salt water, as the contacts for his string galvanometer, the first practical ECG machine. [3]
The device is small and lightweight, making it easy to participate in daily activities. It uses Bluetooth technology to send the information to cell phones, but it can also be connected to a computer via USB cable. [13] 4. Qardio created a wearable ECG monitor that wirelessly sends data to the smartphone for the user and health practitioners ...
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The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane. The hexaxial reference system, better known as the Cabrera system, is a convention to present the extremity leads of the 12 lead electrocardiogram, [1] that provides an illustrative logical sequence that helps interpretation of the ECG, especially to determine the heart's ...
Code — Alaska Administrative Code (unofficial text) Alaska Stat. — Alaska Statutes (unofficial text) All ER — All England Law Reports; All SA — All South African Law Reports; A.L.R. — American Law Reports; A.L.R.2d — American Law Reports, 2nd Series; A.L.R.3d — American Law Reports, 3rd Series; A.L.R.4th — American Law Reports ...