NUR 304 Exam 2 PQ Cardiac Questions With Correct
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Answers
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What //area //of //the //heart's //electrical //conduction //is //known //as //the //"pacemaker" //of //the
//heart?
A. //SA //node
B. //AV //node
C. //Purknije //Fibers
D. //Bundle //of //His
a
What //area //of //the //heart //is //responsible //for //the //delay //of //conduction //between //the //artria
//and //ventricles?
A. //AV //node
B. //Bundle //of //His
C. //Bachmann's //Bundle
D. //Right //bundle //branch
a
True //or //False: //Depolarization //of //the //heart //muscle //is //when //the //muscle //contracts //and
//repolarization //is //when //the //heart //muscle //rests.
true
,On //an //EKG //the //P-wave //represents //what //area //of //the //heart?
A. //Left //bundle //branch
B. //AV //node
C. //Bachmann's //Bundle
D. //SA //node
d
What //part //of //the //heart's //electrical //system //is //known //as //the //"gatekeeper"?
A. //AV //node
B. //Gap //Junction
C. //Tetany
D. //SA //node
a
What //area //of //the //heart //forms //the //PR //segment //on //the //EKG?
A. //Purkinje //fibers
B. //AV //node //and //Right //and //Left //Bundles
C. //Apex //of //heart
D. //Bundle //of //His
b
What //area //of //the //heart //forms //the //QRS //part //on //an //EKG?
A. //Purkinje //fibers
,B. //Left //and //right //bundles
C. //AV //node
D. //SA //node
a
A //patient //has //a //serum //potassium //level //of //3.5 //mEq/L, //and //is //placed //on //a //cardiac
//monitor, //and //receives //40 //mEq //potassium //chloride //in //1000 //ml //of //5% //dextrose //in //water
//IV. //Which //of //the //following //ECG //patterns //indicates //that //the //infusions //should //be
//discontinued?
a. //Narrowed //QRS //complex
b. //Shortened //PR //interval
c. //Tall //peaked //T //waves
d. //Prominent //U //waves
c
A //patient //presents //to //the //emergency //department //with //sudden //onset //chest //pain
//radiating //to //the //left //arm //and //diaphoresis. //Which //of //the //following //is //the //most
//appropriate //initial //step //in //management?
a. //Obtain //an //ECG
b. //Administer //nitroglycerin
c. //Administer //oxygen
d. //Order //a //chest //Xray
a
, True //or //False: //The //SA //node //is //located //in //the //Left //atrium.
false
What //is //the //correct //sequence //of //electrical //conduction //of //the //heart?
A. //SA //node, //internodal //pathways, //AV //node, //Bundle //of //His, //Right //and //Left //Bundle
//Branch, //Purkinje //fibers
B. //AV //node, //internodal //pathways, //SA //node, //Bundle //of //His, //Right //and //Left //Bundle
//Branch, //Purkinje //fibers
C. //SA //node, //internodal //pathways, //AV //node, //Purkinje //Fibers, //Right //and //Left //Bundle
//Branch, //Bundle //of //His
D. //None //of //the //options //are //correct
a
The //myocardium //receives //its //blood //supply //from //what //structure //within //the //body?
A. //pulmonary //arteries
B. //superior //vena //cava
C. //coronary //arteries
D. //pulmonary //veins
c
What //vessel //supplies //parts //of //the //electrical //conduction //system, //SA //and //AV //node, //in //the
//heart //with //blood?
A. //left //anterior //descending //artery
B. //right //coronary //artery
// // // // // // // //
Answers
// //
What //area //of //the //heart's //electrical //conduction //is //known //as //the //"pacemaker" //of //the
//heart?
A. //SA //node
B. //AV //node
C. //Purknije //Fibers
D. //Bundle //of //His
a
What //area //of //the //heart //is //responsible //for //the //delay //of //conduction //between //the //artria
//and //ventricles?
A. //AV //node
B. //Bundle //of //His
C. //Bachmann's //Bundle
D. //Right //bundle //branch
a
True //or //False: //Depolarization //of //the //heart //muscle //is //when //the //muscle //contracts //and
//repolarization //is //when //the //heart //muscle //rests.
true
,On //an //EKG //the //P-wave //represents //what //area //of //the //heart?
A. //Left //bundle //branch
B. //AV //node
C. //Bachmann's //Bundle
D. //SA //node
d
What //part //of //the //heart's //electrical //system //is //known //as //the //"gatekeeper"?
A. //AV //node
B. //Gap //Junction
C. //Tetany
D. //SA //node
a
What //area //of //the //heart //forms //the //PR //segment //on //the //EKG?
A. //Purkinje //fibers
B. //AV //node //and //Right //and //Left //Bundles
C. //Apex //of //heart
D. //Bundle //of //His
b
What //area //of //the //heart //forms //the //QRS //part //on //an //EKG?
A. //Purkinje //fibers
,B. //Left //and //right //bundles
C. //AV //node
D. //SA //node
a
A //patient //has //a //serum //potassium //level //of //3.5 //mEq/L, //and //is //placed //on //a //cardiac
//monitor, //and //receives //40 //mEq //potassium //chloride //in //1000 //ml //of //5% //dextrose //in //water
//IV. //Which //of //the //following //ECG //patterns //indicates //that //the //infusions //should //be
//discontinued?
a. //Narrowed //QRS //complex
b. //Shortened //PR //interval
c. //Tall //peaked //T //waves
d. //Prominent //U //waves
c
A //patient //presents //to //the //emergency //department //with //sudden //onset //chest //pain
//radiating //to //the //left //arm //and //diaphoresis. //Which //of //the //following //is //the //most
//appropriate //initial //step //in //management?
a. //Obtain //an //ECG
b. //Administer //nitroglycerin
c. //Administer //oxygen
d. //Order //a //chest //Xray
a
, True //or //False: //The //SA //node //is //located //in //the //Left //atrium.
false
What //is //the //correct //sequence //of //electrical //conduction //of //the //heart?
A. //SA //node, //internodal //pathways, //AV //node, //Bundle //of //His, //Right //and //Left //Bundle
//Branch, //Purkinje //fibers
B. //AV //node, //internodal //pathways, //SA //node, //Bundle //of //His, //Right //and //Left //Bundle
//Branch, //Purkinje //fibers
C. //SA //node, //internodal //pathways, //AV //node, //Purkinje //Fibers, //Right //and //Left //Bundle
//Branch, //Bundle //of //His
D. //None //of //the //options //are //correct
a
The //myocardium //receives //its //blood //supply //from //what //structure //within //the //body?
A. //pulmonary //arteries
B. //superior //vena //cava
C. //coronary //arteries
D. //pulmonary //veins
c
What //vessel //supplies //parts //of //the //electrical //conduction //system, //SA //and //AV //node, //in //the
//heart //with //blood?
A. //left //anterior //descending //artery
B. //right //coronary //artery
