EKG RHYTHMS QUESTIONS AND VERIFIED SOLUTIONS
NormalrhSinusrhRhythmrh-rhanswers60-100rhbpm
allrhcomplexesrhnormalrhandrhevenlyrhspacedrh(P,rhQRS,rhT)
SinusrhArrestrh-rhanswers-rhSArhnoderhdoesn'trhfire
-rhnoticerhabsencerhofrhP-waverhforrharhcompleterhcyclerh(arhmissedrhcycle)
Sinusrharrhythmiarh-rhanswersallrhcomplexesrhnormalrhbutrhrhythmicallyrhirreg
-
rhnormalrhfindingrh(esprhinrhyoungrhpts)rhthatrhhasrhtorhdorhwithrhbreathingrh(rate:rhi
nhale-increase,rhexhale-decrease)
SinusrhBradycardiarh-rhanswers<60
normalrhsinusrhrhythm
SinusrhTachycardiarh-rhanswers>100rh(100-150)
normalrhsinusrhrhythm
Wanderingrhatrialrhpacemakerrh-rhanswersHint:rhtryrhneverrhtorhpickrhthis
-rhimpulserhoriginaterhfromrhvaryingrhpointsrhinrhatria
-rhvariationrhinrhPrhwaverhcontour,rhPR-I,rhPP-IrhandrhthusrhRR-I
PrhwaverhvsrhTrhwaverh-rhanswersPrhgenerallyrhsmallerrhthanrhT
, MATrh(multifocalrhatrialrhtachy)rh-rhanswers-
rhimpulserhoriginatesrhatrhdiffrhplacesrhinrhatriarhsorhPrhwavesrhdiffrhandrhintervalsrh
mightrhnotrhberhconsistent
-rhassocrhw/rhsevererhpulmrhdz
AtrialrhFibrillationrh-rhanswersA:rh350-450rh(atriarhquivering)
-rhirreg-irregrhrhythmrh(R-RI=irreg)
**unsure/norhP-waverh(non-distinguishable)**
-rhirregrhrhythmrhBUTrhregrhQRS!
Danger:rhincreaserhtherhriskrhofrhthromboemoblicrheventsrhdon'trhconvertrhunlessrhocc
urringrhlessrhthanrh48rhhrs,rhifrhdon'trhknowrhptrhneedrhtorhberhputrhonrhthrombolyti
cs)
AtrialrhFlutterrh-rhanswersA:rh250-350rh
-rh"sawrhtooth"rhp-waves
-rharhcontinuousrhrapidrhsequencerhofrhatrialrhcomplexesrhfromrharhsinglerhrapid-
firingrhatrialrhfocus
(hint:rhifrhseerh2rhPrhwavesrhandrhQRSrhthinkrhArhFlutter)
JunctionalrhEscaperhbeatsrh-rhanswersretrograderhatrialrhdepolarizationrh
P'rhisrhinverted
Junctionalrhrhythmrh-rhanswers40-60rhRegular!
-impulserhfromrhAVrhnoderhw/rhretro/antegraderhtransmission
-rhPrhwaverhoftenrhinverted/buried/followrhQRS
-rhslowrhrate
-rhnarrowrhQRSrh(notrhwiderhlikerhventricular)
JunctionalrhTachycardiarh-rhanswers>60rhbpmrh(ms.rhK;rh150-250)
NormalrhSinusrhRhythmrh-rhanswers60-100rhbpm
allrhcomplexesrhnormalrhandrhevenlyrhspacedrh(P,rhQRS,rhT)
SinusrhArrestrh-rhanswers-rhSArhnoderhdoesn'trhfire
-rhnoticerhabsencerhofrhP-waverhforrharhcompleterhcyclerh(arhmissedrhcycle)
Sinusrharrhythmiarh-rhanswersallrhcomplexesrhnormalrhbutrhrhythmicallyrhirreg
-
rhnormalrhfindingrh(esprhinrhyoungrhpts)rhthatrhhasrhtorhdorhwithrhbreathingrh(rate:rhi
nhale-increase,rhexhale-decrease)
SinusrhBradycardiarh-rhanswers<60
normalrhsinusrhrhythm
SinusrhTachycardiarh-rhanswers>100rh(100-150)
normalrhsinusrhrhythm
Wanderingrhatrialrhpacemakerrh-rhanswersHint:rhtryrhneverrhtorhpickrhthis
-rhimpulserhoriginaterhfromrhvaryingrhpointsrhinrhatria
-rhvariationrhinrhPrhwaverhcontour,rhPR-I,rhPP-IrhandrhthusrhRR-I
PrhwaverhvsrhTrhwaverh-rhanswersPrhgenerallyrhsmallerrhthanrhT
, MATrh(multifocalrhatrialrhtachy)rh-rhanswers-
rhimpulserhoriginatesrhatrhdiffrhplacesrhinrhatriarhsorhPrhwavesrhdiffrhandrhintervalsrh
mightrhnotrhberhconsistent
-rhassocrhw/rhsevererhpulmrhdz
AtrialrhFibrillationrh-rhanswersA:rh350-450rh(atriarhquivering)
-rhirreg-irregrhrhythmrh(R-RI=irreg)
**unsure/norhP-waverh(non-distinguishable)**
-rhirregrhrhythmrhBUTrhregrhQRS!
Danger:rhincreaserhtherhriskrhofrhthromboemoblicrheventsrhdon'trhconvertrhunlessrhocc
urringrhlessrhthanrh48rhhrs,rhifrhdon'trhknowrhptrhneedrhtorhberhputrhonrhthrombolyti
cs)
AtrialrhFlutterrh-rhanswersA:rh250-350rh
-rh"sawrhtooth"rhp-waves
-rharhcontinuousrhrapidrhsequencerhofrhatrialrhcomplexesrhfromrharhsinglerhrapid-
firingrhatrialrhfocus
(hint:rhifrhseerh2rhPrhwavesrhandrhQRSrhthinkrhArhFlutter)
JunctionalrhEscaperhbeatsrh-rhanswersretrograderhatrialrhdepolarizationrh
P'rhisrhinverted
Junctionalrhrhythmrh-rhanswers40-60rhRegular!
-impulserhfromrhAVrhnoderhw/rhretro/antegraderhtransmission
-rhPrhwaverhoftenrhinverted/buried/followrhQRS
-rhslowrhrate
-rhnarrowrhQRSrh(notrhwiderhlikerhventricular)
JunctionalrhTachycardiarh-rhanswers>60rhbpmrh(ms.rhK;rh150-250)
