Exam 1

Question 1

BMI formula

Answer 1

Weight (kg) / Height (m^2)
Remember to convert!
1 kg = 2.2 lb 1 cm = 2.54 in.

Question 2

Oxygen Saturation formula

Answer 2

(Oxygen combined with Hgb / Oxygen carrying capacity) x 100

1. Find Plasma O2 (PaO2 x solubility coE of O2)
2. Subtract plasma O2 from total O2 content (given)
3. Find O2 carrying capacity: Multiply Hgb (given) x 1.34
4. Divide values “2”/”3” and x100

Question 3

Oxygen formula constants

Answer 3

Oxygen carrying capacity: 1 g Hgb = 1.34 ml O2

Solubility coefficient of O2 = 0.003 ml O2/100ml

Question 4

ASA I

Answer 4

A normal healthy patient

Healthy, non-smoking, no/minimal alcohol use

Question 5

ASA II

Answer 5

mild systemic disease without substantial functional limitations: current smoker, social alcohol drinker, preggo, obesity, controlled HTN/DM, mild lung disease

Question 6

ASA III

Answer 6

severe systemic disease with 1+ of: poorly controlled DM/HTN/COPD/Morbid Obesity,
active hepatitis, ETOH abuse/dependency,
pacemaker, reduced EF,
ESRD (regular HD), premie or age <60 weeks
>3months of: MI, CVA, TIA, CAD/stents

Question 7

ASA IV

Answer 7

severe systemic disease w/constant threat to life:
<3months: MI, CVA, TIA, CAD/stents
ongoing cardiac ischemia or severe valve dysfunction
severely reduced EF; sepsis/DIC/Acid Reflux Disease/ESRD (no regular HD)

Question 8

ASA V

Answer 8

moribund patient who is not expected to survive without operation: ruptured aneurysm, massive trauma, intracranial bleed w/mass effect, ischemic bowel, MODS or significant cardiac pathology.

Question 9

ASA VI

Answer 9

declared brain dead patient whose organs will be removed for donor purposes.

Question 10

Allergens: Local Anesthetics

Answer 10

Esters (procaine/cocaine) > Amides (Lidocaine/Bupivacaine/Ropivacaine)
para-aminobenzoic acid (PABA) > methylparaben

Question 11

Pack-Year Formula

Answer 11

of cigs / 20 x years smoked = PPY

there are 20 ciggies in a pack

Question 12

NMBD allergen tier list

Answer 12

Rocuronium > Succinylcholine (anectine) > Atracurium > Vecuronium

Question 13

Allergies (most common to least)

Answer 13

Muscle relaxants > Latex > Antibiotics (PCN) > Local Anesthetics (esters > amides)

Question 14

Molecules responsible for Allergic response (LAs)

Answer 14

Para-aminobenzoic acid (PABA) -esters (more common)

Methylparaben - Amides (rare)