Formulas

Question 1

Pediatric ETT Diameter

Answer 1

(16 + Age)/4= ETT Diameter

Question 2

Pediatric Suction/NG/Foley

Answer 2

(16 + Age)/4= ETT Diameter

2xETT =Suction/NG/Foley

Question 3

Pediatric ETT Depth (cm)

Answer 3

(16 + Age)/4= ETT Diameter

3xETT =ETT insertion depth (cm)

Question 4

Pediatric Chest Tube

Answer 4

16 + Age)/4= ETT Diameter

4xETT =Chest Tube

Question 5

Pediatric BP normal

Answer 5

90 + (2 x Age)= BP normal

Question 6

Pediatric BP Hypotensive

Answer 6

70 +(2 x Age)= Hypotensive BP

Question 7

Mean atrial Pressure

Answer 7

MAP = [(2 x diastolic)+systolic] / 3

Question 8

HCO3 Replacement

Answer 8

0.1x (-BE)x kg = HCO3 replacement

Question 9

Winter formula- What does it tell you?

Answer 9

Expected PCO2 =(1.5 xHCO3)+8 +/-2

Question 10

Time until cylinder is empty

Answer 10

(PSI – 200) x conversion factor/ (flow rate L/minute)= Time until empty

Conversion factor
D 0.16 E 0.28
H or K 3.14 M 1.56

Question 11

Ideal Body Weight Calculation

Answer 11

Male = 50.0+2.3x(ht)
Woman = 45.5 + 2.3x(ht)

Question 12

Shock index

Answer 12

HR/SBP= Shock index
<0.7 = Normal
> 0.8= Elevate- need for transfusion/Risk for post-intubation hypotension
>1.0 = predictor of mortality

Question 13

Anion Gap Formula

What is normal

Answer 13

Anion gap = Na⁺ + K⁺ – (Cl⁻ + HCO₃⁻)

Normal 10+/-2

Question 14

CCP

Answer 14

CCP= MAP -ICP

ICP 0-10 normal 10-25 is increased ICP

Normal CCP= 60 and 80 mm Hg

Question 15

Pediatric Maintenance fluid

Answer 15

4 mL / kg / hour for the first 10kg of body mass
2 mL / kg / hour for the second 10kg of body mass (11kg - 20kg)
1 mL / kg / hour for any kilogram of body mass above 20kg (> 20kg)

Question 16

O2 Adjustment