Basic ECG- Junctional Rhythm

Question 1

What do PJC’s generate?

Answer 1

AV junction

Question 2

What occurs (pertaining to depolarization) in the atria and ventricles?

Answer 2

retrograde depolarization in the atria & normal depolarization in the ventricula

Question 3

What is the rhythm in PJC’s?

Answer 3

irregular in atria and regular in the ventricles

Question 4

What occurs with the p waves?

Answer 4

Inverted or absent

Question 5

The following are causes of PJC’s: COPD.

Answer 5

True

Question 6

The following are causes of PJC’s: CAD.

Answer 6

True

Question 7

The following are causes of PJC’s:
digoxin toxicity.

Answer 7

True

Question 8

The following are causes of PJC’s: LAD MI.

Answer 8

False; Inferior Wall MI

Question 9

The following are causes of PJC’s: relaxed.

Answer 9

False; stressed

Question 10

The following are causes of PJC’s: valvular heart disease.

Answer 10

True

Question 11

What are symptoms one may experience if they are having PJC’s?

Answer 11

• no symptoms
• palpitations
• hypotension

Question 12

Explain what happens with PJC’s/ Junctional escape rhythm regarding where they originate.

Answer 12

• They originate in the AV Junction.
• SA node fails to generate impulse.
• impulse conduction is blocked.

Question 13

What does the junctional escape rhythm protect?

Answer 13

protects the heart from life threatening idioventricular rhythms.

Question 14

What is the rhythm for junctional escape rhythm?

Answer 14

regular

Question 15

What does the p wave look like for junctional rhythm?

Answer 15

inverted or absent

Question 16

T/F: SA nodal dysfunction is a cause of junctional escape rhythm.

Answer 16

True

Question 17

What drugs cause junctional escape rhythm?

Answer 17

• beta Blockers
• calcium channel blockers
• digoxin

Question 18

T/F: Heart failure is a cause of junctional escape rhythm.

Answer 18

True

Question 19

Besides SA node dysfunction, drugs, and heart failure, what else causes junctional escape rhythm?

Answer 19

sick sinus syndrome
sa node ischemia
hypoxia

Question 20

What are signs and symptoms of junctional escape?

Answer 20

possibly no symptoms
HR 40-60

Question 21

What should you never do while treating a junctional rhythm patient?

Answer 21

never suppress

Question 22

What are some treatment examples for patients and observations for a patient with junctional rhythm?

Answer 22

• atropine
• pacer potentially
• decreased CO

Question 23

What is the rate for accelerated junctional rhythm?

Answer 23

60-100

Question 24

What is the rhythm for AJR?

Answer 24

regular

Question 25

Is the p wave present in AJR?

Answer 25

inverted or absent

Question 26

The following are causes of AJR: open heart surgery.

Answer 26

True

Question 27

The following are causes of AJR: electrolyte imabalance.

Answer 27

True

Question 28

The following are causes of AJR: heart failure.

Answer 28

True

Question 29

The following are causes of AJR: medial wall MI.

Answer 29

False; Inferior Wall MI

Question 30

The following are causes of AJR: Rheumatic heart disease.

Answer 30

True

Question 31

What are the signs and symptoms for AJR?

Answer 31

- decreased CO - normal pulse, rate, and rhythm - usually no symptoms

Question 32

What are some treatment options for patients who have AJR?

Answer 32

correct underlying issue & monitor electrolyte levels

Question 33

What classifies Junctional Tachycardia?

Answer 33

3 or more PJC'S

Question 34

T/F: Junctional Tachycardia is a type of SVT.

Answer 34

True

Question 35

What is the rate of Junctional Tachycardia?

Answer 35

100-200

Question 36

T/F : Inferior Wall MI is the only cause of Junctional Tachycardia.

Answer 36

False; Posterior and Inferior Wall MI's

Question 37

What are additional causes of Junctional Tachycardia?

Answer 37

- Digoxin toxicity - electrolyte imbalance - heart failure - valvular heart disease

Question 38

What are the signs and symptoms for Junctional Tachycardia?

Answer 38

- rate > 100 - decreased CO - hemodynamic instability