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A patient has been diagnosed with a deep vein thrombosis
(DVT). Which of the following statements describes how a
DVT initially develops? - ANSWER-Damage to the vessel
lining causes platelet aggregation, which traps red blood
cells
A patient is receiving warfarin for prevention of venous
thrombosis after knee replacement. Which of the following
laboratory tests will be used to determine dose adjustment
of this drug? - ANSWER-International normalized ratio
,A patient was placed on enoxaparin after hip replacement
surgery. Which of the following statements describes the
action of this drug? - ANSWER-Accelerates formation of
antithrombin III-thrombin complex
The antidote for heparin overdose, protamine sulfate, is
indicated. Protamine immediately neutralizes the heparin,
and the action lasts about 2 hours. After 2 hours,
additional protamine may be indicated, depending on the
aPTT levels.
The nurse monitors the aPTT of a patient receiving
heparin for a deep vein thrombosis. The nurse notes that
, the aPTT is 70. What is the most important action to be
taken by the nurse?
Notify the physician
Document the result
Increase the infusion rate
Decrease the infusion rate - ANSWER-Document the
result
In a patient receiving intravenous heparin, monitoring the
aPTT result is necessary to ensure adequate
anticoagulation as well as to check for overmedication.
Normal aPTT is 40 seconds, and when the patient is
receiving heparin, therapeutic effects occur when the