Monitoring things

Question 1

What is the recommended circumference of the BP cuff for cats or dogs?

Answer 1

40% dogs
30% cats

Question 2

is the

How much does Doppler BP underestimate SAP in cats?

Answer 2

by 10-15 mm Hg

Question 3

How is the sensitivity versus specificity of Doppler BP to detect hypotension in dogs?

Answer 3

• low sensitivity
• good specificity

Question 4

Describe how oscillometric BP measurement works

Answer 4

BP cuff inflates and deflates repeatedly - measured changes in oscillations (caused by pulse pressure). Peak oscillation amplitude - MAP
first oscillations detected - SAP
oscillations decrease rapidly - DAP

Question 5

Name the equation for PPV

Answer 5

PPV = 100 x (PPmax - PPmin) / [(PPmax + PPmin) /2)

Question 6

What is the conversion factor to change mm Hg to cm H2O

Answer 6

multiply by 1.36

Question 7

Describe the different changes in CVP after a test bolus depending on the patients initial volume status

Answer 7

Hypovolemic
* quick rise and quick return to baseline
* may not change at all

Euvolemic
* increase by 2-4 cm H2O
* return to baseline within 15 min

Hypervolemic or decreased cardiac compliance
* increase > 4 cm H2O
* slow retunr to baseline (> 30 min)

Question 8

What is the normal pulmonary artery occlusion pressure in dogs?

Answer 8

5-12 mm Hg

Question 9

What are normal CO values in dogs and cats?

Answer 9

dogs 125-200 mL/kg/min
cats 120 mL/kg/min

Question 10

How do you calculate pulmonary vascular resistance?

Answer 10

(mean PAP - PAOP) / Cardiac index

other references say CO instead of CI