FundamentalsnOfnNursingn9thnEditionnPotternTestnBank
Chapter 41: Oxygenation
n n
FundamentalsnofnNursing,n9thnEditionn
MULTIPLEnCHOICE
1.nAnnursenisnteachingnstaffnaboutnthenconductionnofnthenheart.nInnwhichnordernwillnthennursenp
resentnthenconductionncycle,nstartingnwithnthenfirstnstructure?
1. BundlenofnHis
2. Purkinjennetwork
3. Intraatrialnpathways
4. Sinoatrialn(SA)nnode
5. Atrioventricularn(AV)nnode
a. 5,n4,n3,n2,n1
b. 4,n3,n5,n1,n2
c. 4,n5,n3,n1,n2 NURSINGTB.COM
d. 5,n3,n4,n2,n1
ANS:nB
ThenconductionnsystemnoriginatesnwithnthenSAnnode,nthen“pacemaker”nofnthenheart.nThenelectricalni
mpulsesnarentransmittednthroughnthenatrianalongnintraatrialnpathwaysntonthenAVnnode.nItnassists
Pagen1nofn788
, FUNDAMENTALSnOFnNURSINGn9THnEDITIONnPOTTERnTESTnBANK
PrimenyourselfnfornyournTestsn–nStudynQuestions
atrialnemptyingnbyndelayingnthenimpulsenbeforentransmittingnitnthroughnthenBundlenofnHisnandnthenv
entricularnPurkinjennetwork.
2. Annursenisnteachingnthenpatientnwithnmitralnvalvenproblemsnaboutnthenvalvesninnthenheart.nSt
artingnonnthenrightnsidenofnthenheart,ndescribenthensequencenofnthenbloodnflownthroughnthesenval
ves.
1. Mitral
2. Aortic
3. Tricuspid
4. Pulmonic
a. 1,n3,n2,n4
b. 4,n3,n2,n1
c. 3,n4,n1,n2
d. 2,n4,n1,n3
ANS:nC
NURSINGTB.COM
,3
FundamentalsnOfnNursingn9thnEditionnPotternTestnBank
Thenbloodnflowsnthroughnthenvalvesninnthenfollowingndirection:ntricuspid,npulmonic,nmitral,nandna
ortic.
3. Annursenexplainsnthenfunctionnofnthenalveolintonanpatientnwithnrespiratorynproblems.nWhichni
nformationnaboutnthenalveoli’snfunctionnwillnthennursensharenwithnthenpatient?
a. Carriesnoutngasnexchange
b. Regulatesntidalnvolume
NURSINGTB.COM
c. Producesnhemoglobin
d. Storesnoxygen
ANS:nA
Thenalveolusnisnancapillarynmembranenthatnallowsngasnexchangenofnoxygennandncarbonndioxidend
uringnrespiration.nThenalveolindonnotnstorenoxygen,nregulatentidalnvolume,nornproducenhemoglob
in.
4. Annursenauscultatesnheartnsounds.nWhennthennursenhearsnS2,nwhichnvalvesnisnthennursenhearingnc
lose?
Pagen3nofn788
, FUNDAMENTALSnOFnNURSINGn9THnEDITIONnPOTTERnTESTnBANK
PrimenyourselfnfornyournTestsn–nStudynQuestions
a. Aorticnandnmitral
b. Mitralnandntricuspid
c. Aorticnandnpulmonic
d. Mitralnandnpulmonic
ANS:nC
Asnthenventriclesnempty,nthenventricularnpressuresndecrease,nallowingnclosurenofnthenaorticnandnpul
monicnvalves,nproducingnthensecondnheartnsound,nS2.nThenmitralnandntricuspidnproducenthenfirstnhear
tnsound,nS1.nThenaorticnandnmitralndonnotnclosenatnthensamentime.nThenmitralnandnpulmonicndonnotnclo
senatnthensamentime.
5. Thennursenisnteachingnaboutnthenprocessnofnexchangingngasesnthroughnthenalveolarncapillaryn
membrane.nWhichntermnwillnthennursenusentondescribenthisnprocess?
a. Ventilation
b. Surfactant
c. Perfusion
d. Diffusion
ANS:nD
Diffusionnisnthenprocessnofngasesnexchangingnacrossnthenalveolinandncapillariesnofnbody
NURSINGTB.COM