A client who underwent surgery 12 hours ago has difficulty breathing. He has petechiae over his chest and complains of acute chest pain. What action should the nurse take first?
a) Perform nasopharyngeal suctioning.
b) Initiate oxygen therapy.
c) Administer a heparin bolus and begin an infusion at 500 units/hour.
d) Administer analgesics as ordered.
Answer: b) Initiate oxygen therapy.
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