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Author Question: A patient's heart rate increased from 94 to 164 beats/min. What will the nurse expect? a. ... (Read 51 times)

tiffannnnyyyyyy

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on: Jul 22, 2018
A patient's heart rate increased from 94 to 164 beats/min. What will the nurse expect?
 
  a. Increase in diastolic filling time
  b. Decrease in hemoglobin level
  c. Decrease in cardiac output
  d. Increase in stroke volume

Question 2

A patient has heart failure and cardiac output is decreased. Which formula can the nurse use to calculate cardiac output?
 
  a. Myocardial contractility  Myocardial blood flow
  b. Ventricular filling time/Diastolic filling time
  c. Stroke volume  Heart rate
  d. Preload/Afterload


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Eunice618

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Reply #1 on: Jul 22, 2018
Answer to Question 1

ANS: C
With a sustained heart rate greater than 160 beats/min, diastolic filling time decreases, decreasing stroke volume and cardiac output. The hemoglobin level would not be affected.

Answer to Question 2

ANS: C
Cardiac output can be calculated by multiplying the stroke volume and the heart rate. The other options are not measures of cardiac output.


tiffannnnyyyyyy

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Reply 2 on: Jul 22, 2018
Thanks for the timely response, appreciate it

bblaney

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Reply 3 on: Yesterday
Gracias!

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