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CHAPTER EIGHTEEN. Hyperbaric Oxygen Therapy

In order to be considered hyperbaric therapy, pressure must be

a. Above one atmosphere absolute.

b. Greater than 1.4 atmosphere absolute.

c. Between 2 and 3 atmosphere absolute.

d. Either inhaled or topical.

Hyperbaric oxygen therapy is physiologically effective in increasing skin perfusion because it

a. Causes vasodilation of the distal vessels.

b. Increases the blood flow to the extremities by increasing the blood pressure.

c. Increases the oxygen dissolved in the plasma and tissues.

d. Dissolves the fibrinogen clots in occluded arteries.

Studies of HBOT on diabetic patients has shown that there is an increase in

a. Platelet-derived growth factors and fibroblast production.

b. Migration of macrophages to the injured tissue.

c. Collateral circulation in the affected extremity.

d. Histamine with resulting increased vasopermeability.

In order for Medicare to cover HBOT for a diabetic foot wound, it must be classified as a

a. Wagner I.

b. Wagner II.

c. Wagner III.

d. Wagner IV.

Which of the following is an absolute contraindication to HBOT?

a. Emphysema

b. Seizure disorder

c. Congestive heart failure

d. Untreated pneumothorax

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