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 55 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
Wow, this really help

AISCAMPING

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

The span of Homo sapiens sapiens’ time on earth The span of Homo sapiens sapiens’ time on earth
Peripheral veins used in intravenous therapy; A, forearm; B, dorsum of the hand; C, dorsal plexus of Peripheral veins used in intravenous therapy; A, forearm; B, dorsum of the hand; C, dorsal plexus of
Patient teaching: mouth and pharyngeal assessment Patient teaching: mouth and pharyngeal assessment
The reminder card should be completed and handed to the patient after the appointment is scheduled. The reminder card should be completed and handed to the patient after the appointment is scheduled.
The injector on-time is called the pulse width. The injector on-time is called the pulse width.
The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution ... The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution ...
Video: Cardiac Cycle (Part 3 of 4)

For a complete list of videos, visit our video library