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Increased venous return or fluid overload can increase blood volume in the atria. This can lead to stretching of the atrial walls, triggering the release of hormones or peptides that promote fluid retention to further increase blood volume.

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1y ago

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Does increasing arterial blood pressure increases blood flow?

YES! Changes in blood volume affect arterial pressure by changing cardiac output. An increase in blood volume increases central venous pressure. This increases right atrial pressure, right ventricular end - diastolic pressure and volume. This increase in ventricular preload increases ventricular stroke volume by the Frank - Starling mechanism. An increase in right ventricular stroke volume increases pulmonary venous blood flow to the left ventricular, thereby increasing left ventricular preload and stroke volume. An increase in stroke volume then increases cardiac output and arterial blood pressure. answered by HappyNess0423


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