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Blood Pressure and Electrocardiography - Assignment Example

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This assignment aims to define the diastolic blood pressure and further answers the questions connected to the field of blood pressure investigations. Moreover, this paper contains the answers to the questions regarding the electrocardiography, like: "What does the P-wave of the ECG represent?."…
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Blood Pressure and Electrocardiography
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"Blood Pressure and Electrocardiography"

Download file to see previous pages 1. Define diastolic blood pressure.
"Diastolic" came from the Greek diastole meaning "a drawing apart." The term has been in use since the 16th century to denote the period of relaxation of the heart muscle. The diastolic pressure is specifically the minimum arterial pressure during relaxation and dilatation of the ventricles of the heart when the ventricles fill with blood. In a blood pressure reading, the diastolic pressure is typically the second number recorded. For example, with a blood pressure of 120/80 ("120 over 80"), the diastolic pressure is 80. By "80" is meant 80 mm Hg (millimeters of mercury). (Braunwald E, 2004; Moreno MN, 2006))
2. Given a blood pressure of 125/80, what is the mean arterial pressure?
Mean Arterial Pressure = DBP + 1/3(SBP-DBP)
Given: SBP = 125
DBP = 80
80 + 1/3(125-80) = 95mmHg
Electrocardiography
1. When the electrode pads are placed on the subject, where is the positive electrode placed?
An electrocardiogram is obtained by measuring electrical potential between various points of the body using an amplifier. A lead records the electrical signals of the heart from a particular combination of recording electrodes which are placed at specific points on the patient's body. When a depolarization wavefront (or mean electrical vector) moves toward a positive electrode, it creates a positive deflection on the ECG in the corresponding lead. ...Download file to see next pagesRead More
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