This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A patient is stabilized on warfarin therapy and being monitored using the prothrombin time (PT) ... (Read 106 times)

CQXA

  • Hero Member
  • *****
  • Posts: 546
on: Jun 25, 2018
A patient is stabilized on warfarin therapy and being monitored using the prothrombin time (PT) followed by calculation of the international normalized ratio (INR). The formula for calculating the INR is:
 
  INR = (PTpatient/PTnormal)ISI (where ISI = international sensitivity index)
 
  What is used for the PTnormal?
 
  a. Arithmetic mean PT for the control
  b. Geometric mean PT for the reference population
  c. Arithmetic mean PT as found in a standard reference textbook
  d. Geometric mean PT reported by the manufacturer of the PT reagent being used

Question 2

Once a patient is stabilized on warfarin therapy, how often should he or she be monitored?
 
  a. Once every 6 months
  b. Once every week
  c. Once a year
  d. Once a month


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Expo

  • Sr. Member
  • ****
  • Posts: 351
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: B
The PTnormal is the geometric mean for the PT reference interval determined by the clinical laboratory scientists in the laboratory where the testing is being performed. Using the wrong value in this calculation has led to major reporting errors that have resulted in bad patient outcomes.

Answer to Question 2

ANS: D
Once a patient is stabilized on warfarin therapy, monitoring should continue monthly until therapy is complete. Changes in diet, metabolism, renal function, other drugs being taken, as well as additional factors all change the response to warfarin and may require making dosage adjustments.


CQXA

  • Member
  • Posts: 546
Reply 2 on: Jun 25, 2018
YES! Correct, THANKS for helping me on my review

bimper21

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

When using an interpreter, the nurse should pose questions directly to the patient, not the interpre When using an interpreter, the nurse should pose questions directly to the patient, not the interpre
Remedies for insomnia include increased physical exercise and time spent outdoors. Remedies for insomnia include increased physical exercise and time spent outdoors.
Patient registration form. Patient registration form.
A computerized patient registration form used by offices with electronic health records. A computerized patient registration form used by offices with electronic health records.
Dialysis machine showing diffusion of concentrations, which are the same, between the patient’s ... Dialysis machine showing diffusion of concentrations, which are the same, between the patient’s ...
Walkers help the patient ambulate safely. Walkers help the patient ambulate safely.
Video: Introduction to Autism

For a complete list of videos, visit our video library