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Exam 7: Dysrhythmia Interpretation and Management

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Question 21

Multiple Choice

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Electrocardiogram (ECG) paper contains a standardized grid where the horizontal axis measures time and the vertical axis measures voltage or amplitude.The nurse must understand that each horizontal box indicates:

A) 200 milliseconds or 0.20 seconds duration.
B) 40 milliseconds or 0.04 seconds duration.
C) 3 seconds duration.
D) millivolts of amplitude.

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Question 22

Multiple Choice

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When assessing the 12-lead electrocardiogram (ECG) or a rhythm strip,it is helpful to understand that the electrical activity is viewed in relation to the positive electrode of that particular lead.When an electrical signal is aimed directly at the positive electrode,the inflection will be:

A) negative.
B) upside down.
C) upright.
D) equally positive and negative.

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Question 23

Multiple Choice

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The nurse is reading the cardiac monitor and notes that the patient's heart rhythm is extremely irregular and there are no discernible P waves.The ventricular rate is 90 beats per minute,and the patient is hemodynamically stable.The nurse realizes that the patient's rhythm is:

Interpret the following rhythm:

The patient is asymptomatic but is diagnosed with second-degree heart block Mobitz I.The patient is on digitalis medication at home.The nurse should expect that:

The patient's heart rhythm shows an inverted P wave with a PR interval of 0.06 seconds.The heart rate is 54 beats per minute.The nurse recognizes the rhythm as a junctional escape rhythm,and understands that the rhythm is due to the:

The nurse notes the following rhythm on the heart monitor.The patient is unresponsive and not breathing.The nurse should

Interpret the following rhythm:

Interpret the following rhythm:

Interpret the following rhythm:

Interpret the following rhythm:

Interpret the following rhythm:

Interpret the following rhythm:

The patient has a permanent pacemaker inserted.The provider has set the pacemaker to the demand mode at a rate of 60 beats per minute.The nurse realizes that:

One of the functions of the atrioventricular (AV) node is to:

The patient is in chronic junctional escape rhythm with no atrial activity noted.Studies have demonstrated normal AV node function.This patient may be a candidate for which type of pacing?

The patient has an irregular heart rhythm.To determine an accurate heart rate,the nurse first:

The nurse understands that in a third-degree AV block:

The nurse is talking with the patient when the monitor alarms and shows a wavy baseline without a PQRST complex.The nurse should:

The patient is admitted with sinus pauses causing periods of loss of consciousness.The patient is asymptomatic,awake and alert,but fatigued.He answers questions appropriately.When admitting this patient,the nurse should first: