Blood vessel: Any channel that carries blood; includes arteries, arterioles,capillaries, venules, and veins.
Congestive heart failure: A condition in which the heart is unable to pump blood at an adequate rate or in adequate volume.
mmHg: Millimeter of mercury, a unit of pressure equal to that exerted by a column of mercury at 0 degrees C one millimeter high at sea level.
Pre-eclampsia: An illness of pregnancy characterized by high blood pressure, swelling or edema, and proteinuria.