Multiple Choice Questions (MCQ)

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Category: Surgery--->Physiologic Monitoring of the Surgical Patient
Page: 2

Question 6#Print Question

The end-systolic pressure-volume line:

a. Provides a good estimation of left ventricular compliance
b. Uses small changes in preload and afterload between cardiac cycles to determine contractility, which is represented by the x-intercept of the line
c. The slope will become steeper if contractility is increased
d. Requires preload to be held approximately constant to be measured

Question 7#Print Question

The thermodilution technique for determining cardiac output:

a. Calculates QT with the Fick equation
b. Underestimates cardiac output at low values
c. Should be performed with a cold indicator liquid to increase the signal-to-noise ratio
d. Is influenced by respiratory cycle due to changes in blood temperature and QT

Question 8#Print Question

All of the following are true regarding the fractional saturation of hemoglobin in mixed venous blood (SVO2) EXCEPT:

a. It will decrease with worsening heart failure
b. It will decrease with increased sedation
c. It will decrease with worsening anemia
d. It will decrease with fever

Question 9#Print Question

The Surviving Sepsis Campaign guidelines recommend which of the following regarding the initial resuscitation of sepsis-induced hypoperfusion?

a. Goal MAP ≥60 mm Hg
b. Goal SVO2 of 80%
c. Goal urine output ≥ 1 mL/kg/h
d. That goals of resuscitation be met within the first 6 hours of management

Question 10#Print Question

Noninvasive methods of measuring cardiac output:

a. Allow for continuous measurement of QT
b. Show excellent correlation with QT as measured by thermodilution
c. Have rarely been adopted into clinical practice due to the increased training burden
d. Have similar complication rates as the use of a pulmonary artery catheter

Category: Surgery--->Physiologic Monitoring of the Surgical Patient
Page: 2 of 4