2008 ECG & PULSE Biopac7

2008 ECG & PULSE Biopac7 - EKG and PULSE Lesson 7...

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EKG and PULSE Lesson 7 (Biopac)
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ECG- page 2 SYSTOLE > begins peak of R wave and ends at end of T wave > T wave represents ventricular repolarization
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Page 2 (cont.) DIASTOLE > begins end of T wave and lasts until the next R wave
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Blood Flow Ventricular systole pushes blood to arteries ( pulmonary arteries and aorta) The elastic recoil of the muscular arterial wall propels blood through the rest of the system Pressure is transmitted to the periphery like the fingertips
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PULSE Pressure wave transmitted to the periphery The tissue and organs change in volume as blood vessels dilate or constrict and as pulse of blood passes through the vessels during each cardiac cycle
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PULSE ( cont.) The dilation and constriction are dependent of a variety of factors: > sympathetic stimulation > temperature > metabolic activity > certain drugs
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Comparing Blood Flow Blood flow in aorta is fastest: 40-50 cm/ sec ( 1 mile per hour) Speed of pressure wave ( peripheral blood flow) can be much faster
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2008 ECG & PULSE Biopac7 - EKG and PULSE Lesson 7...

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