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ESSENTIALS OF CRITICAL CARE NURSING CHAPTER 5 HEMODYNAMICS QUESTIONS AND ANSWERS UPDATED
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ESSENTIALS OF CRITICAL CARE NURSING CHAPTER 5 HEMODYNAMICS QUESTIONS AND ANSWERS UPDATED
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ESSENTIALS OF CRITICAL CARE NURSING CHAPTER 5HEMODYNAMICS QUESTIONS AND ANSWERS UPDATED 2024 - 2025
A,patient,has,a,blood,pressure,of,134/70,per,blood,pressure,cuff,and,a,blood,pressure,of,90/50,per,arteri
al,line.,The,nurse,should:,
1.,Discontinue,the,arterial,line,immediately.
2.,Check,the,level,of,the,transducer,and,relevel,and,rezero,the,system.
3.,Do,nothing,because,this,is,a,normal,variation,between,the,two,methods,of,measurement.
4.,Begin,the,infusion,of,a,dopamine,drip.,,ANS,-,,Correct,Answer:,2
Rationale,1:,The,system,needs,to,be,assessed,first.,
Rationale,2:,The,placement,of,the,transducer,is,essential,for,accurate,measurement.,It,must,be,level,with
,the,phlebostatic,axis,in,order,for,the,monitoring,system,to,be,accurate.,
Rationale,3:,This,is,not,a,normal,variation,between,the,two,methods,of,measurement.,
Rationale,4:,More,information,and,data,are,needed,before,administering,medication,therapy.
The,nurse,is,monitoring,a,patient's,pulmonary,vascular,resistance.,Which,value,is,the,normal,value?,
1.,100-250,mm,Hg
2.,10-250,dynes/sec/cm2
3.,400-800,mm,Hg
4.,800-1,400,dynes/sec/cm2,,ANS,-,,Correct,Answer:,2
Rationale,1:,A,measurement,in,mm,Hg,is,used,to,measure,pressure,only.,
Rationale,2:,The,pulmonary,system,is,a,low-
pressure,system.,The,pressure,of,the,vascular,system,is,measured,in,dynes/sec/cm2,due,to,factors,of,flo
w,,resistance,,and,time.,This,is,the,normal,value,for,pulmonary,vascular,resistance.,
Rationale,3:,A,measurement,in,mm,Hg,is,used,to,measure,pressure,only.
Rationale,4:,This,is,the,value,for,SVR.
A,patient's,systemic,vascular,resistance,(SVR),has,dangerously,decreased.,The,nurse,would,expect,to,ad
minister,which,medications?,
1.,Furosemide,(Lasix),and,dopamine
2.,Nitroprusside,and,furosemide,(Lasix)
, 3.,Dopamine,and,norepinephrine,(Levophed)
4.,Nitroglycerin,and,digoxin,(Lanoxin),,ANS,-,,Correct,Answer:,3
Rationale,1:,Furosemide,(Lasix),is,a,diuretic,that,reduces,fluid,volume,and,is,a,mild,vasodilator.,The,syste
mic,vascular,resistance,will,be,further,decreased.,
Rationale,2:,Furosemide,(Lasix),is,a,diuretic,that,reduces,fluid,volume,and,is,a,mild,vasodilator.,The,syste
mic,vascular,resistance,will,be,further,decreased.,
Rationale,3:,If,the,SVR,is,low,,there,is,massive,peripheral,vasodilation.,These,meds,will,increase,vasomot
or,tone,as,well,as,increase,blood,pressure.
Rationale,4:,Nitroglycerin,is,a,potent,vasodilator.,The,systemic,vascular,resistance,will,be,further,decreas
ed.
A,patient,has,mixed,venous,oxygen,saturation,(SVO2),of,52%,with,the,following,hemodynamic,findings:,
CO,of,4.8,L/min,,SaO2,of,95%,,and,an,unchanged,hemoglobin,level.,The,nurse,should,assess,the,patient,f
or:,
1.,Excessive,sedation
2.,Position,of,the,PA,catheter
3.,Hypothermia
4.,Pain,,ANS,-,,Correct,Answer:,4
Rationale,1:,Excessive,sedation,contributes,to,a,higher,than,normal,SVO2,level,due,to,a,lower,level,of,oxy
gen,extracted,by,the,tissues.
Rationale,2:,This,would,not,influence,the,patient's,blood,levels,of,oxygen,and,carbon,dioxide.,
Rationale,3:,Hypothermia,contributes,to,a,higher,than,normal,SVO2,level,due,to,a,lower,level,of,oxygen,e
xtracted,by,the,tissues.
Rationale,4:,Pain,causes,an,increased,consumption,of,oxygen;,therefore,,the,SVO2,level,will,decrease.
Which,of,the,following,actions,has,the,highest,priority,for,maintaining,safety,when,caring,for,a,patient,wi
th,a,PA,catheter?,
1.,Obtain,pressures,per,protocol.
2.,Administer,fluids,and,medications,via,pump.
3.,Maintain,asepsis,when,providing,line,care.
4.,Obtain,lab,values,as,ordered.,,ANS,-,,Correct,Answer:,3
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