NUR 751 Volatiles/IAs–Questions and Answers |
2026 Update | 100% Correct.
Desired IA/Volatile Characteristics:
-Non-__________
-Poor ___:blood solubility
-Resistant to __________
-Favorable ________ profile
-________ side effects
-Simple delivery
-Versatility
-Favorable _________ characteristics
flammable ; fat ; metabolism ; recovery ; minimal ; hemodynamic
Molecular Structure of Modern Anesthetics:
-Considered halogenated hydrocarbons = ________ & ________ are the halogens
-Halogenation w/ F- = increases ________ + lowers _______ + decreases ___________
= compared to Cl-
chloride ; fluoride ; stability ; toxicity ; combustibility
Cost Considerations:
,-Affected by = price/mL + SVP + _______ + solubility + ____ (low = cost-saving) + how
fast pt ____ up (____/min to run OR = want to do so fast)
potency ; flow ; wakes ; $100
MAC:
-Minimum alveolar concentration = the concentration at 1 atm (760mmHg) that prevents
skeletal muscle ________ in response to supramaximal _______ stimulus (surgical
skin _______) in ___ of pts
-1 MAC = can be considered the ____ of IAs
-Standard deviation is approx. 10% (think bell curve) = ___ won't move at 1.1 MAC + ___
won't move at 1.2 MAC + ___ won't move at 1.3 MAC
movement ; painful ; incision ; 50% ; ED50 ; 68% ; 95% ; 99%
Calculating MAC:
-MAC values are ________ (ex: 0.5 MAC of Sevo + 0.5 MAC of N2O = 1 MAC)
-Volatiles = NEVER administered ____________
-To calculate MAC = take _ of volatile/IA -> divide by its ___
-If giving more than 1 IA = calculate MAC for both -> ___ together
-Ex: 1% Sevo w/ 50% N2O
-Sevo = _/_ = ___ MAC
-N2O = __/___ = ~___ MAC
, -Combined = _ MAC
additive ; concurrently ; % ; MAC ; add ; 1/2 ; 0.5 ; 50/104 ; 0.5 ; 1
MAC Bar:
-Minimum alveolar pressure needed to block ________ response (in response to
supramaximal painful stimulus in 50% of pts)
-___-___ MAC
-Tough to calculate in practice b/c of _______ (other meds such as
fent/prop/versed/ketamine/etc)
adrenergic ; 1.3-2.0 ; additives
MAC Amnestic:
-Useful to see what we can get away w/ when situation calls for minimal
anesthesia (think really ____/______ pt = more anesthesia -> depress BP/etc)
-MAC required to produce amnesia is variable
-___ MAC in 50% of pts
-___ MAC in 95% of pts
-Ideally = want at least ___ MAC to be safe
sick/unstable ; 0.2 ; 0.4 ; 0.5
Factors Increasing MAC Required:
-Increased MAC = decreased ________ = need ____
2026 Update | 100% Correct.
Desired IA/Volatile Characteristics:
-Non-__________
-Poor ___:blood solubility
-Resistant to __________
-Favorable ________ profile
-________ side effects
-Simple delivery
-Versatility
-Favorable _________ characteristics
flammable ; fat ; metabolism ; recovery ; minimal ; hemodynamic
Molecular Structure of Modern Anesthetics:
-Considered halogenated hydrocarbons = ________ & ________ are the halogens
-Halogenation w/ F- = increases ________ + lowers _______ + decreases ___________
= compared to Cl-
chloride ; fluoride ; stability ; toxicity ; combustibility
Cost Considerations:
,-Affected by = price/mL + SVP + _______ + solubility + ____ (low = cost-saving) + how
fast pt ____ up (____/min to run OR = want to do so fast)
potency ; flow ; wakes ; $100
MAC:
-Minimum alveolar concentration = the concentration at 1 atm (760mmHg) that prevents
skeletal muscle ________ in response to supramaximal _______ stimulus (surgical
skin _______) in ___ of pts
-1 MAC = can be considered the ____ of IAs
-Standard deviation is approx. 10% (think bell curve) = ___ won't move at 1.1 MAC + ___
won't move at 1.2 MAC + ___ won't move at 1.3 MAC
movement ; painful ; incision ; 50% ; ED50 ; 68% ; 95% ; 99%
Calculating MAC:
-MAC values are ________ (ex: 0.5 MAC of Sevo + 0.5 MAC of N2O = 1 MAC)
-Volatiles = NEVER administered ____________
-To calculate MAC = take _ of volatile/IA -> divide by its ___
-If giving more than 1 IA = calculate MAC for both -> ___ together
-Ex: 1% Sevo w/ 50% N2O
-Sevo = _/_ = ___ MAC
-N2O = __/___ = ~___ MAC
, -Combined = _ MAC
additive ; concurrently ; % ; MAC ; add ; 1/2 ; 0.5 ; 50/104 ; 0.5 ; 1
MAC Bar:
-Minimum alveolar pressure needed to block ________ response (in response to
supramaximal painful stimulus in 50% of pts)
-___-___ MAC
-Tough to calculate in practice b/c of _______ (other meds such as
fent/prop/versed/ketamine/etc)
adrenergic ; 1.3-2.0 ; additives
MAC Amnestic:
-Useful to see what we can get away w/ when situation calls for minimal
anesthesia (think really ____/______ pt = more anesthesia -> depress BP/etc)
-MAC required to produce amnesia is variable
-___ MAC in 50% of pts
-___ MAC in 95% of pts
-Ideally = want at least ___ MAC to be safe
sick/unstable ; 0.2 ; 0.4 ; 0.5
Factors Increasing MAC Required:
-Increased MAC = decreased ________ = need ____
