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CHAPTER EIGHTEEN. Hyperbaric Oxygen Therapy

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In order to be considered hyperbaric therapy, pressure must be

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a. Above one atmosphere absolute.

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b. Greater than 1.4 atmosphere absolute.

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c. Between 2 and 3 atmosphere absolute.

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d. Either inhaled or topical.

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

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a. Causes vasodilation of the distal vessels.

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

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

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d. Dissolves the fibrinogen clots in occluded arteries.

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

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a. Platelet-derived growth factors and fibroblast production.

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b. Migration of macrophages to the injured tissue.

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c. Collateral circulation in the affected extremity.

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d. Histamine with resulting increased vasopermeability.

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

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a. Wagner I.

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b. Wagner II.

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c. Wagner III.

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d. Wagner IV.

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Which of the following is an absolute contraindication to HBOT?

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a. Emphysema

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b. Seizure disorder

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c. Congestive heart failure

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d. Untreated pneumothorax

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