Respiratory Calculations

Question 1

what are the tank factors for H/E?

Answer 1

H= 3.14
E= 0.28

Question 2

how do you measure heliox?

Answer 2

80/20= flow(1.8)
70/30=  flow(1.6)

Question 3

what is heliox used for?

Answer 3

upper airway obstruction

asthma exacerbation

Question 4

what is the formula for suction catheter size?

Answer 4

(ETT size x 2) - 2

Question 5

what is the formula for ett size for children?

Answer 5

age+16/4

Question 6

what is the formula for a childs medication dose?

Answer 6

childs weight(adult dose)/ 150

Question 7

what is RAW formula?

Answer 7

PIP-Plat/flow

Question 8

what is the formula for static compliance?

Answer 8

vt/ plat-peep

Question 9

what is the formula dynamic compliance?

Answer 9

vt/pip-peep

Question 10

what is the formula for alveolar minute ventilation?

Answer 10

Va=(vt-vd)rr

Question 11

what is the dead space ratio?

Answer 11

PaCO2-PECO2/PaCO2

Question 12

what is the o2 delivery to the tissues?

Answer 12

DO2= QT (CaO2)

Question 13

what is the formula for o2 total content?

Answer 13

(HGB x 1.34 x SaO2) + (PaO2 x 0.003)

Question 14

what is the alveolar air equation?

Answer 14

PAO2= (PB-PH2O)FiO2 - (PaCO2/0.8)