300 Topic 8 Medication Administratio
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NSG n EXAM 3 TOPIC 7 AND 8 Q AND A
300
Perfusionxc-xcanswer--
ThexcabilityxcofxcthexccardiovascularxcsystemxctoxcpumpxcoxygenatedxcbloodxcTOxcthexcTISSUESxcandxcreturnxcdeoxyge
tedxcbloodxctoxcthexclungs
Ventilationxc-xcanswer--
ThexcpricessxcofxcMOVINGxcgasesxcintoxcandxcoutxcofxcthexclungsxcwithxcAIRxcflowingxcinxcduringxcinhalationxcandxcoutxcdu
gxcexhalation.
MOVEMENTxcofxcairxcinxcandxcoutxcofxcthexclungs.
Diffusionxcinxclungsxc-xcanswer--
Thexcmovementxcofxcrespiratoryxcgasesxcfromxconexcareaxctoxcanotherxcbyxcconcentrationxcgradients.
Thexcprocessxcforxcexchangexcofxcrespiratoryxcgassesxcinxcthexcalveolixcofxclungsxcandxccapillariesxcofxcbodyxctissues.
hypoventilationxc-xcanswer--
shallow,xcslowxcrespirations,xcabdominalxcbreathing,xcmorexcCo2xcinxclungsxcthanxcO2,xcwouldxcpresentxcmentalxcstausxc
anges,xcarrhythmias.
COPDxcpatientsxcadaptxcandxchavexclowerxcSPO2xclevelsxc(88-92%),
Hyperventilationxc-xcanswer--
Fast,xcdeepxcbreathing,xcMorexcco2xcout,xchavexcpatientxcbreathxcinxcaxcpaperxcbag,xcseenxcinxcAnxiety
Hypoxiaxc-xcanswer--inadequatexctissuexcoxygenationxcatxcthexccellularxclevel
Causedxcbyxclowxchemoglobin,xclowxchematocrit,xchighxcaltitudesxc,xcpnemonia,xcshock
atelectasisxc-xcanswer--collapsedxclung.xc
Itxcisxcimportantxctoxcdoxcdeepxcbreathingxceveryxchourxctoxcprevent.
Nasalxccannulaxc-xcanswer--Lowxcflowxcdelivery;xc1-6xcL/minxc24-44%xc
Advantages:xcsafexcandxcsimple,xceasilyxctolerated,xcdoesxcnotxcimpedexctalkingxcorxceatingxc,xcinexpensive,dispoable,xc
wconcentrations
Disadvantages:driesxcoutxcmucousxcmembranes,xcskinxcirritation/
breakdown,xcPtxcbreathingxcpatternxcaffectsxcFiO2xcdelivery
Reservoirxcbagsxc-xcanswer--Shouldxcremainxcpartiallyxcinflated
Simplexcfacexcmaskxc-xcanswer--Lowxcflowxcdelivery,xc6-12xcL/minxc35-50%xc
Pros:xcUsefulxcinxcshortxcperiods(patientxctransportation)xc
Cons:xccanxcinducexcclaustrophobiaxc,xcincreasexcriskxcofxcaspiration,xcshouldxcnotxcbexcusedxcinxcCOPDxc,xcptsxcwhoxcret
xcco2
Non-rebreatherxcmaskxcflowxcratexc-xcanswer--Lowxcflow;xc10-15xcL/minxc
Usfulxcinxcshortxcperiods,xcdoesxcnotxcdryxcmembranes.
Hotxcandxcconfining,xcMayxctwist,xcshouldxcnotxctotallyxcdeflate
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