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What type of diuresis is illustrated by the use of Ted stockings for patients with lower extremity edema?

  1. Constrictive diuresis

  2. Osmotic diuresis

  3. Loop diuresis

  4. Pressure diuresis

The correct answer is: Constrictive diuresis

The use of Ted stockings for patients with lower extremity edema illustrates the concept of constrictive diuresis. Ted stockings, or thromboembolic deterrent stockings, apply graduated compression to the lower extremities. This compression helps to reduce swelling by promoting venous return to the heart and preventing the accumulation of fluid in the tissues. Constrictive diuresis relies on external pressure to facilitate fluid movement from the interstitial spaces back into the vascular system. By exerting pressure on the limbs, Ted stockings decrease the hydrostatic pressure in the veins, which helps to draw excess fluid back into the bloodstream. This process indirectly encourages the kidneys to excrete excess fluid, contributing to the reduction of edema. In contrast, osmotic diuresis involves the administration of substances that increase osmotic pressure in the renal tubules, leading to increased urine output. Loop diuretics act on the loop of Henle in the kidney, inhibiting sodium reabsorption, which also results in increased urine production. Pressure diuresis refers to urine output that increases due to elevated blood pressure. Each of these types of diuresis operates on different physiological principles than the mechanical action provided by Ted stockings.