respiratory/ airway assessment Flashcards
MP Class 1
visualize the soft palate, fauces, uvula, anterior and posterior
MP Class 2
visualize soft pallets, fauces, and uvula only
MP class 3
Only soft pallet and base of uvula are visible
MP class 4
only the soft palate is visible
Cormack-Lehane Grade 1
Full view of the entire glottic opening
Cormack-Lehane Grade 2
The posterior portion of the glottic opening is visible
Cormack-Lehane Grade 3
Only the epiglottis is visible
Cormack - Lehane Grade 4
Neither glottis nor epiglottis is seen
ASA 1
Normal healthy patient
ASA 2
mild systemic disease (no functional limitations)
ASA 3
Severe systemic disease (some functional limitations)
ASA 4
severe systemic disease w/ constant threat to life
ASA 5
Moribund patient who is not expected to survive w/o surgery
ASA 6
Brain dead patient; organs procured for donation
Normal pH
7.35-7.45
Normal PaO2
90-100
Normal PaCO2
35-45
Normal HCO3
22-26
Normal Base Excess
-2-2
Normal SaO2
95-98%
VO2 formula
VO2 = 10 x kg 3/4
VCO2 formula
VCO2 = 8 x kg3/4
Alveolar air equation
(FiO2 x (PB-PH2O)) - PaCO2/0.8
Arterial O2 content/dL
(Hgb x 1.34 x SaO2) + (PaO2 x 0.003)
Male PBW formula
50 + 0.91 (height in cm - 152.4) kg
Female PBW formula
45.5 + 0.91 (height in cm - 152.4) kg
What is the ETT size indicative of?
inner tube diameter
Preemies < 1 kg ett size
2.5
Preemies 1-2.5 kg ett size
3
Term neonate (6 months) ett size
3.0-3.5
6 mo - 1 year ett size
3.5-4.0
1-2 years ett size
4.0-4.5
> 2 years ett size
(age + 16)/ 4
Tube length calculation
tube size x 3
LMA size 1 is for what weight range?
up to 5 kg
LMA size 1 max cuff volume
4 ml of air
LMA size 1.5 is for what weight range?
5-10 kg
LMA size 1.5 max cuff volume
up to 7 ml of air
LMA size 2 is for what weight range?
10-20 kg
LMA size 2 max cuff volume
up to 10 ml of air
LMA size 2.5 is for what wt range?
20-30 kg
LMA size 2.5 max cuff volume
up to 14 ml of air
LMA size 3 is for what weight range?
> 30 kg
LMA size 3 max cuff volume
up to 20 ml
LMA size 4 is for what weight range
adult
(50-70 kg)
LMA size 4 max cuff volume
up to 30 ml