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  2. Pulse pressure - Wikipedia

    en.wikipedia.org/wiki/Pulse_pressure

    Pulse pressure is calculated as the difference between the systolic blood pressure and the diastolic blood pressure. [3] [4]The systemic pulse pressure is approximately proportional to stroke volume, or the amount of blood ejected from the left ventricle during systole (pump action) and inversely proportional to the compliance (similar to elasticity) of the aorta.

  3. Afterload - Wikipedia

    en.wikipedia.org/wiki/Afterload

    This leads to elevated systolic blood pressure. The diastolic blood pressure in the aorta falls, due to regurgitation. This increases pulse pressure. [9] Mitral regurgitation (MR) decreases afterload. In ventricular systole under MR, regurgitant blood flows backwards/retrograde back and forth through a diseased and leaking mitral valve. The ...

  4. Preload (cardiology) - Wikipedia

    en.wikipedia.org/wiki/Preload_(cardiology)

    An arteriovenous fistula can increase preload. [5] Preload is also affected by two main body "pumps": Respiratory pump - Intrapleural pressure decreases during inspiration and abdominal pressure increases, squeezing local abdominal veins, allowing thoracic veins to expand and increase blood flow towards the right atrium.

  5. Heart attacks spike every Christmas. How cold weather, big ...

    www.aol.com/lifestyle/heart-attacks-spike-every...

    “The cold weather does affect your biology,” she says. “The blood vessels constrict, and that raises the blood pressure and makes it harder for your heart to pump blood to your body.”

  6. Blood pressure - Wikipedia

    en.wikipedia.org/wiki/Blood_pressure

    For people with high blood pressure, higher heart rate variability (HRV) is a risk factor for atrial fibrillation. [ 51 ] Both high systolic pressure and high pulse pressure (the numerical difference between systolic and diastolic pressures) are risk factors. [ 49 ]

  7. Hypotension - Wikipedia

    en.wikipedia.org/wiki/Hypotension

    Hypotension, also known as low blood pressure, is a cardiovascular condition characterized by abnormally reduced blood pressure. [1] Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps out blood [2] and is indicated by two numbers, the systolic blood pressure (the top number) and the diastolic blood pressure (the bottom number), which are the ...

  8. Blood pressure measurement - Wikipedia

    en.wikipedia.org/wiki/Blood_pressure_measurement

    A more accurate value of systolic blood pressure can be obtained with a sphygmomanometer and palpating the radial pulse. [11] Methods using constitutive models have been proposed to measure blood pressure from radial artery pulse. [citation needed] The diastolic blood pressure cannot be estimated by this method. The American Heart Association ...

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