The nurse suspects that a patient's wound is healing slowly because of poor oxygen perfusion to the tissues. Which of the following would interfere with oxygen delivery to aid in the healing of this patient's wound?

1. smoking
2. gastritis
3. alcohol consumption
4. reduced activity


1

Rationale: Smoking adversely affects wound healing. Nicotine causes vasoconstriction and decreased tissue perfusion. Carbon monoxide combines with hemoglobin, inhibits the binding with oxygen, and decreases the oxygen-carrying capacity of hemoglobin; all contribute to decreased oxygen delivery to wound beds. Smoking also increases platelet adhesiveness, making them more "sticky," leading to microclots in small vessels that decrease oxygen delivery. The other choices are not known to interfere with oxygen perfusion to the tissues.

Nursing

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ANS:

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