Hemodynamic and kidney changes during normal pregnancy

Systemic hemodynamics

Increase in cardiac output

Fall in vascular resistance and blood pressure

Blood volume expansion

Kidney function and electrolyte balance

Increase in glomerular filtration rate

Chronic respiratory alkalosis

Hyponatremia due to resetting of osmostat

Increased ADH metabolism and polyuria in some individuals

ADH: antidiuretic hormone.

Graphic 66445 Version 3.0

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