Nokea
A nurse is conducting an in-service presentation about hemostasis. The nurse determines that the teaching was successful when the class identifies a thrombus as which of the following?
- A. Damage to a blood vessel
- B. Formation of a blood clot
- C. Cessation of bleeding
- D. Coagulation cascade
Correct Answer: B
Rationale: A thrombus refers to the formation of a blood clot, sometimes from damage, in a vessel that impedes blood flow.
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After teaching a group of nursing students about heparins, the instructor determines that the teaching was successful when the students identify which of the following as an example of a low-molecular-weight heparin (LMWH)? Select all that apply.
- A. Dalteparin
- B. Streptokinase
- C. Enoxaparin
- D. Warfarin
- E. Tinzaparin
Correct Answer: A,C,E
Rationale: Dalteparin, enoxaparin, and tinzaparin are all examples of LMWHs. Streptokinase is a thrombolytic; warfarin is an oral anticoagulant.
Which of the following may be ordered periodically during therapy with anticoagulants? Select all that apply.
- A. Urinalysis
- B. Platelet count
- C. Blood count
- D. Stool analysis
- E. Ultrasound
Correct Answer: B,C,D
Rationale: A complete blood count, platelet count, and stool analysis for occult blood may be ordered periodically throughout anticoagulant therapy.
A nurse is conducting a seminar on thrombosis. What information would the nurse include about the cause of arterial thrombosis?
- A. Decreased blood flow
- B. Injury to the vessel wall
- C. Arrhythmias
- D. Altered blood coagulation
Correct Answer: C
Rationale: The nurse should mention that arterial thrombosis is caused by atherosclerosis and arrhythmias. Decreased blood flow, injury to the vessel wall, and altered blood flow are causes of venous thrombosis.
A client is receiving heparin by continuous IV infusion. Which of the following would be most appropriate for the nurse to do?
- A. Perform a complete blood count.
- B. Perform baseline PT/INR.
- C. Perform APTT test 4 to 6 hours after injection.
- D. Perform blood coagulation tests every 4 hours.
Correct Answer: D
Rationale: The nurse should perform blood coagulation tests every 4 hours for the client receiving heparin by continuous IV infusion.
A client is experiencing an overdosage of heparin. The nurse would expect to administer which of the following?
- A. Vitamin K1
- B. Protamine
- C. Ticlopidine
- D. Tenecteplase
Correct Answer: B
Rationale: Heparin overdosage is treated with protamine, which neutralizes heparin's anticoagulant effects.