Heparin is an anticoagulant produced by the basophils. The most likely mechanism heparin prevents blood clotting is by

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Hematological drugs Questions

Question 1 of 5

Heparin is an anticoagulant produced by the basophils. The most likely mechanism heparin prevents blood clotting is by

A. Inhibiting the formation of vitamin K dependent clotting factors B. Preventing the activation of platelets C. Preventing the aggregation of platelets D. Binding to antithrombin III to inactivate thrombin

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 2 of 5

What's the most appropriate test to diagnose haemophilia?

A. Prothrombin time B. Bleeding time C. Partial Thromboplastin Time D. Platelet count

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 3 of 5

A nurse treating a patient taking Terbutaline should understand/do which of the following?

A. Terbutaline can cause tachycardia and angina and the patient's pulse should be monitored for an increase of greater than 20-30 beats/min. B. Terbutaline can cause bradycardia and nausea and the patient should be observed for hemoptysis. C. Terbutaline can cause maculopapular rashes and dorsal acne vulgaris in adolescent men and the patient should be monitored by a dermatologist. D. Terbutaline can cause sedation in elderly patients and they should be observed for anaphylactoid reactions.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 4 of 5

An LPN attending to chronic hypertensive elderly patients at the local skilled nursing facility should remember that use of beta adrenergic blockers can negate effects of

A. Beta 2 adrenergic agonists B. Bronchodilators C. Both D. Neither

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 5 of 5

A nurse is treating a 35-year-old male with a history of exercise-induced bronchospasms. The patient has been prescribed formoterol and, while counseling him on the proper use of long-acting beta 2 agonists, the nurse explains that inhalers are

A. used every 12 hours for long-term control and are also used to abort an acute asthma attack. B. used every 6 hours for long-term control and are also used to abort an acute heart attack. C. used every 12 hours for long-term control and are not used to abort an acute asthma attack. D. used every 6 hours for long-term control and are also used to abort an abdominal cramps.

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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