Exam (elaborations)
Anesthesia Equipment and Physics Questions with detailed Answers at the End
- Course
- Institution
Anesthesia Equipment and Physics Questions with detailed Answers at the End
[Show more]
Content preview
(Questions1through90):Eachquestionorincompletestatementinthissectionisfollowedbyanswersorbycompletionsofthestatement,respectively.SelecttheONE
BESTanswerorcompletionforeachitem.DirectionsAnesthesiaEquipmentandPhysics
QuestionswithdetailedAnswersatthe
End
1.A75-year-oldpatientintheintensivecareunit(ICU)isextubatedafter
recoveringfromacuterespiratorydistresssyndrome(ARDS).Hehasahistory
ofpreviousmyocardialinfarction,congestiveheartfailure,andpneumonia.He
hasanA-line,pulmonaryartery(PA)catheterandisreceivingoxygenbynasal
cannula.WhichofthefollowingtechniquesisLEASTaccurateforassessing
anintravascularfluidchallenge?
A.Centralvenouspressure(CVP)
B.PAocclusionpressure
C.Transesophagealechocardiography(TEE)
D.Measurementofpulsepressurevariation(PPV)
2.SelectthecorrectstatementregardingcolorDopplerimaging.
A.ItisaformofM-modeechocardiography
B.ThetechnologyisbasedoncontinuouswaveDoppler
C.Byconvention,motiontowardtheultrasoundprobeisredand
motionawayfromtheprobeisblue
D.Twoultrasoundcrystalsareused:onefortransmissionofthe
ultrasoundsignalandoneforreceptionofthereturningwave
3.Whenthepressuregaugeonasize“E”compressed-gascylindercontainingN2
Obeginstofallfromitspreviousconstantpressureof750psi,approximately
howmanylitersofgaswillremaininthecylinder?
A.200L
B.400L
C.600L
D.Cannotbecalculated
4.Whatpercentdesfluraneispresentinthevaporizingchamberofadesflurane
vaporizer(pressurizedto1500mmHgandheatedto23°C)?
A.Nearly100%
B.85%
C.65%
D.45% 5.Iftheinternaldiameterofanintravenouscatheterweredoubled,flowthrough
thecatheterwouldbe
A.Decreasedbyafactorof2
B.Decreasedbyafactorof4
C.Increasedbyafactorof8
D.Increasedbyafactorof16
6.Asize“E”compressed-gascylindercompletelyfilledwithN2Ocontainshow
manyliters?
A.1160L
B.1470L
C.1590L
D.1640L
7.Whichofthefollowingmethodscanbeusedtodetectallleaksinthelow-
pressurecircuitofallcontemporaryanesthesiamachines?
A.Negative-pressureleaktest
B.Commongasoutletocclusiontest
C.Traditionalpositive-pressureleaktest
D.Noneoftheabove
8.Whichofthefollowingvalvespreventstransfillingbetweencompressed-gas
cylinders?
A.Fail-safevalve
B.Checkvalve
C.Pressure-sensorshutoffvalve
D.Adjustablepressure-limitingvalve
9.Thedrivingforceoftheventilator(Datex-Ohmeda7000,7810,7100,and
7900)ontheanesthesiaworkstationisaccomplishedwith
A.Compressedoxygen
B.Compressedair
C.Electricityalone
D.Electricityandcompressedoxygen
10.Thepressuregaugeonasize“E”compressed-gascylindercontainingO2reads
1600psi.HowlongcouldO2bedeliveredfromthiscylinderatarateof2
L/min?
A.90minutes
B.140minutes
C.250minutes
D.320minutes
11.A25-year-oldhealthypatientisanesthetizedforafemoralherniarepair.
AnesthesiaismaintainedwithisofluraneandN2O50%inO2,andthe
patient’slungsaremechanicallyventilated.Suddenly,the“low-arterial
saturation”warningsignalonthepulseoximetergivesanalarm.Afterthe
patientisdisconnectedfromtheanesthesiamachine,heundergoesventilation withanAmbubagwith100%O2withoutdifficulty,andthearterialsaturation
quicklyimproves.Duringinspectionofyouranesthesiaequipment,younotice
thatthebobbinintheO2rotameterisnotrotating.Thismostlikelyindicates
A.FlowofO2throughtheO2rotameter
B.NoflowofO2throughtheO2rotameter
C.AleakintheO2rotameterbelowthebobbin
D.AleakintheO2rotameterabovethebobbin
12.TheO2pressure-sensorshutoffvalverequireswhatO2pressuretoremainopen
andallowN2OtoflowintotheN2Orotameter?
A.10psi
B.30psi
C.50psi
D.100psi
13.A78-year-oldpatientisanesthetizedforresectionofalivertumor.After
inductionandtrachealintubation,a20-gaugearteriallineisplacedand
connectedtoatransducerthatislocated20cmbelowtheleveloftheheart.
Thesystemiszeroedatthestopcocklocatedatthewristwhilethepatient’s
armisstretchedoutonanarmboard.Howwillthearteriallinepressure
comparewiththetruebloodpressure(BP)?
A.Itwillbe20mmHghigher
B.Itwillbe15mmHghigher
C.Itwillbethesame
D.Itwillbe15mmHglower
14.Thesecond-stageO2pressureregulatordeliversaconstantO2pressuretothe
rotametersof
A.4psi
B.8psi
C.16psi
D.32psi
15.Youarecalledtoassistacolleaguewhonotesalargegasleakintheanesthesia
circuit.Veryhighoxygenflows(15L/minute)arebeingused,buttheventilator
bellowsdonotfillduringtheventilatorcycle.Youthenattempttomanually
ventilatethepatient,butthereservoirbagdoesnotfill.Youthendisconnect
thepatientfromtheanesthesiamachineandattempttoventilatethepatient
withananesthesiabag(connectedtoseparateoxygensource),buthighoxygen
flowsarestillrequiredtoachieveevenalowpositivepressureforventilation.
Themostappropriatestepwouldbe
A.Deflatecuffandreinflateuntilthereisagoodseal
B.Pulloutnasogastrictube
C.Reintubatethepatient D.Reconnecttheendotrachealtubetotheanesthesiamachinecircuit
with15L/minuteflowO2plus15L/flowair
16.Asevofluranevaporizerwilldeliveranaccurateconcentrationofanunknown
volatileanestheticifthelattershareswhichpropertywithsevoflurane?
A.Molecularweight
B.Oil/gaspartitioncoefficient
C.Vaporpressure
D.Blood/gaspartitioncoefficient
17.A58-year-oldpatienthassevereshortnessofbreathand“wheezing.”On
examination,thepatientisfoundtohaveinspiratoryandexpiratorystridor.
Furtherevaluationrevealsmarkedextrinsiccompressionofthemidtracheaby
atumor.Thetypeofairflowatthepointofobstructionwithinthetracheais
A.Laminarflow
B.Turbulentflow
C.Undulantflow
D.Stenoticflow
18.ConcerningthepatientinQuestion17,administrationof70%heliuminO2
insteadof100%O2willdecreasetheresistancetoairflowthroughthestenotic
regionwithinthetracheabecause
A.Heliumdecreasestheviscosityofthegasmixture
B.Heliumdecreasesthefrictioncoefficientofthegasmixture
C.Heliumdecreasesthedensityofthegasmixture
D.HeliumincreasestheReynoldsnumberofthegasmixture
19.A56-year-oldpatientisbroughttotheoperatingroom(OR)forelective
replacementofastenoticaorticvalve.Anawake20-gaugearterialcatheteris
placedintotherightradialarteryandisthenconnectedtoatransducerlocated
atthesamelevelasthepatient’sleftventricle.Theentiresystemiszeroedat
thetransducer.Severalsecondslater,thepatientraisesbotharmsintotheair
untilhisrightwristis20cmabovehisheart.AsheisdoingthistheBPonthe
monitorreads120/80mmHg.Whatwouldthispatient’strueBPbeatthis
time?
A.140/100mmHg
B.135/95mmHg
C.120/80mmHg
D.105/65mmHg
20.Anadmixtureofroomairinthewastegasdisposalsystemduringan
appendectomyinaparalyzed,mechanicallyventilatedpatientundergeneral
volatileanesthesiacanbestbeexplainedbywhichmechanismofentry?
A.Positive-pressurereliefvalve
B.Negative-pressurereliefvalve
C.Sodalimecanister
D.Ventilatorbellows
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Tush3161. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77973 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now