Author Question: The lab test used to evaluate the effectiveness of heparin therapy is used because it demonstrates ... (Read 86 times)

vicky · **on:** Jul 24, 2018

The lab test used to evaluate the effectiveness of heparin therapy is used because it demonstrates the action of heparin in interfering with the conversion of:

a. prothrombin to fibrinogen c. prothrombin to thrombin
b. thrombin to thromboplastin d. proconvertin to proaccelerin

Question 2

The nurse is preparing to administer heparin via a saline lock. The nurse should perform all of the following actions, except:

a. disinfect the diaphragm of the saline lock before administration,
b. use a small gauge needle if not using a needleless system.
c. remove the saline lock cap before administration.
d. monitor for infiltration during administration

ebenov · **Reply #1 on:** Jul 24, 2018

Answer to Question 1

ANS: C

Feedback
A Incorrect: Prothrombin does not convert to fibrinogen.
B Incorrect: Thrombin does not convert to thromboplastin.
C Correct: The actual partial thromboplastin time measures how effectively heparin interferes with the conversion of prothrombin to thrombin.
D Incorrect: These two clotting factors are not affected by heparin.

Answer to Question 2

ANS: C

Feedback
A Incorrect: This is an appropriate action.
B Incorrect: This is an appropriate action.
C Correct: The saline lock cap should not be removed before administration.
D Incorrect: This is an appropriate assessment.