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Final Exam Dysrhythmia with complete solutions
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Final Exam Dysrhythmia with complete solutions
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Final Exam Dysrhythmia with completesolutions
First nnDegree nnAtrioventricular nnHeart nnBlock nn- nnANSWER: nn✔ nnprolonged nnPR nninterval-measures nnthe
nntime nnrequired nnfor nnan nnimpulse nnto nntravel nnfrom nnthe nnSA nnto nnthe nnAV nnnode. nnPRI nnlonger nnthan nn0.20
Second nndegree nnAV nnblock nnType nnI nn- nnANSWER: nn✔ nnprogressive nnprolongation nnof nnPRI, nngradual
nnshortening nnof nnR nnto nnR nnintervals
nn
P nnwave nnnot nnfollowed nnby nna nnQRS nnwave
a nnpause nnwith nnan nnR nnto nnR nninterval nnless nnthan nnthe nnsum nnof nntwo nnP nnto nnP nnintervals nn
first nnconducted nnatrial nnimpulse nnafter nnthe nnpause nnshows nna nnshorter nnor nnnormal nnPRI
Second nnDegree nnAV nnBlock nnType nn2 nn- nnANSWER: nn✔ nnRhythm: nnventricular nnirregular; nnatrial nnregular nn
Rate: nnatrial nnrate nn> nnventricular nnrate nn
P nnwaves: nnP nnwaves nnmay nnnot nnbe nnfollowed nnby nnQRS nn
PRI: nnWNL nnor nnprolonged nn; nnPRI nnbefore nnand nnafter nna nnblocked nnP nnwaves nnare nnconstant. nn
QRS nnduration: nnWNL; nngreater nnthan nn0.11 nnsec nnblock nnoccurs nnbelow nnthe nnbundle.
characteristics nnof nnfirst nndegree nnAV nnblock nn- nnANSWER: nn✔ nnrhythm: nnregular nn
Rate: nnusually nnWNL
P nnwaves: nnone nnpositive nnbefore nneach nnQRS nncomplex nn
PRI: nnprolonged nn
QRS: nnnormal
,causes nnof nnfirst nndegree nnAV nnblock nn- nnANSWER: nn✔ nn- nnnormal nnin nnhx nnof nncardiac nndisease nnespecially
nnathletes nn
- nnAcute nnMI nn
- nnacute nnmydocarditis nnor nnendocarditis nn
- nncardiomyopathy
- nndegenerative nnfibrosis nnand nnsclarosis nn
- nndrugs nn
- nnhyperkalemia nn
- nnincreased nnvagal nntone nn
- nnischemia nnor nninjury nnto nnthe nnAV nnnode nnor nnAV nnbundle nn
- nnrheumatic nnheart nndisease nn
- nnvalvular nnheart nndisease
what nncauses nnsecond nndegree nnAV nnblock nntype nnI nn- nnANSWER: nn✔ nnRCA, nnathletes, nnaortic nnvalve
nndisease, nnatrial nnseptal nndefects, nnmeds, nnmitral nnvalve nnprolapse, nnrheumatic nnheart nndisease.
what nndo nni nndo nnabout nnsecond nndegree nnAV nnblock nntype nnI nn- nnANSWER: nn✔ nnatropine nnfor nnbradycardia.
second nndegree nnAV nnblock nntype nnII nncauses nn- nnANSWER: nn✔ nnMI nnis nnrelated nnto nnconduction nneffects,
nnacute nnmyocarditis, nnaortic nnvalve nndisease, nncardiomyopathy, nnfibrosis nnof nnthe nnconduction nnsystem,
nnrheumatic nnheart nndisease
second nndegree nnAV nnblock nntype nnII nns/s nn- nnANSWER: nn✔ nndepends nnon nnthe nnventricular nnrate: nnif nnnormal
nnit nnis nnasymptomatic. nncould nnprogress nnto nnthird nndegree, nnpacemakers, nnECG, nnpulse nnox, nnobtain nnVS,
nnadministed nnoxygen, nnest nnIV nnaccess
temporary nnor nnpermanent nnpacing
third nndegree nnheart nnblock nn- nnANSWER: nn✔ nnRhythm: nnventricular nnregular; nnatrial nnregular, nnno
nnrelationship nnis nnpresent nn
,Rate: nnthe nnatrial nnrate nnis nngreater nnthan nnthe nnventricular nnand nnthe nnventricular nnrate nnis nndetermined nnby
nnthe nnescape nn
P nnwaves: nnnormal nnin nnsize nnand nnshape; nnnot nnfollowed nnby nna nnQRS nncomplex nn
PRI: nnno nnPRI nnbc nnthey nnare nnnot nnrelated nn
QRS: nnnarrow nnor nnwide nndepending nnon nnthe nnlocation nnof nnthe nnpacemaker
hypokalemia nnT nnwaves nn- nnANSWER: nn✔ nndepressed nnT nnwaves
hyperkalemia nnT nnwaves nn- nnANSWER: nn✔ nnelevated nnT nnwaves
causes nnof nnthird nndegree nnheart nnblock nn- nnANSWER: nn✔ nnacute nnMI nn
acute nnmyocarditis nn
congenital nnheart nndisease nn
drug nneffect nn
fibrosis nnof nnthe nnconduction nnsystem nn
increased nnparasympathetic nntone
capture nn- nnANSWER: nn✔ nnThe nnsuccessful nnconduction nnof nnan nnartificial nnpacemaker's nnimpulse nnthrough
nnthe nnmyocardium, nnresulting nnin nndepolarization
demand nnpacemaker nn- nnANSWER: nn✔ nnPacemaker nnthat nndischarges nnonly nnwhen nnthe nnpatient's nnheart
nnrate nndrops nnbelow nnthe nnpreset nnrate nnfor nnthe nnpacemaker; nnalso nnknown nnas nna nnsynchronous nnor
nnnoncompetitive nnpacemaker.
dual nnchamber nnpacemaker nn- nnANSWER: nn✔ nnPacemaker nnthat nnstimulates nnthe nnatrium nnand nnventricle;
nndual-chamber nnpacing nnis nnalso nncalled nnphysiologic nnpacing. nnThey nnmust nnget nncounseling nnbecause nnit
nnhurts
, Fixed nnrate nnpacemaker nn- nnANSWER: nn✔ nnPacemaker nnthat nncontinuously nndischarges nnat nna nnpreset nnrate
nnregardless nnof nnthe nnpatient's nnintrinsic nnactivity; nnalso nnknown nnas nnan nnasynchronous nnpacemaker
Sensitivity nn- nnANSWER: nn✔ nnthe nnextent nnto nnwhich nnan nnartificial nnpacemaker nnrecognizes nnintrinsic
nncardiac nnelectrical nnactivity.
Temporary nnPacemaker's nn- nnANSWER: nn✔ nntranscutaneous: nnpads nnthat nngo nnon nnthe nnbody nn
transvenous: nnintroduced nninto nna nncentral nnvein nnlike nnthe nnsubclavian, nnfemoral, nnbrachial, nninternal nnor
nnexternal nnjugular nnvein
complications nnof nnpacemaker: nn- nnANSWER: nn✔ nnbleeding, nninfection, nnMI, nnPE, nndysrhythmias, nnwires
nncan nncome nnloose, nnbattery nnchanges, nnno nnMRI, nncannot nndo nnelectromagnetic nn
for nntranscutaneous: nnhold nnpressure nnfor nn20 nnminutes nnand nntell nnthe nnpatient nnnot nnto nnbend nntheir nnlegs.
12 nnlead nnECG nn- nnANSWER: nn✔ nnLimb nnleads: nnI, nnII, nnII, nnAVR, nnAVL, nnAVF
Chest nnleads: nnV₁ nn, nnV₂ nn, nnV₃ nn, nnV₄ nn, nnV₅ nn, nnV₆
Where nnare nnthe nn12 nnlead nnECG's nnplaced nn- nnANSWER: nn✔ nnLead nnI: nnreceives nninformation nnfrom nnR nnand
nnL nnarms; nndipolar nnviews nntop nnof nnthe nnheart nn
Lead nnII: nnreceives nninformation nnfrom nnR nnarm nnand nnL nnfoot
lead nnIII: nnreceives nninformation nnfrom nnLeft nnleg nnand nnarm nn
avR: nnon nnthe nnRight nnarm nn
avF: nnon nnthe nnright nnfoot nn
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