Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/60

Click to flip

60 Cards in this Set

  • Front
  • Back

A ______ effect increases the force of myocardial contraction

positive inotropic

A ______ effect increases the heart rate.

positive chronotropic

A _____ effect will usually help ____respiratory rate and will increase blood flow through the kidneys, so fluid output will increase.

positive inotropic


slow



_________ is a dysrhythmia that proceeds normally through the conduction pathway but at a faster than usual rate (100 to 150 beats/minute)

Sinus tachycardia



_______ is a disorder in which a single atrial impulse outside the SA node causes the atria to contract at an exceedingly rapid rate.

Atrial flutter

A client presents to the emergency department via ambulance with a heart rate of 210 beats/minute and a sawtooth waveform pattern per cardiac monitor. The nurse is most correct to alert the medical team of the presence of a client with which disorder?

:Atrial flutter

_______is the absence of cardiac function and can indicate death.

Asystole

_________contraction indicates an early electric impulse and does not necessarily produce an exceedingly rapid heart rate.

Premature ventricular

________ is the inefficient quivering of the ventricles and indicative of a dying heart

ventricular fibrillation

_______is used during pulseless ventricular tachycardia and ventricular fibrillation.

Defibrillation

A client has a medical diagnosis of an advanced AV block and is symptomatic due to a slow heart rate. With what initial treatment(s) should the nurse be prepared to assist?

IV bolus of atropine or temporary pacing

Which of the following terms is used to describe a tachycardia characterized by abrupt onset, abrupt cessation, and a QRS of normal duration?

Paroxysmal atrial tachycardia

_______ causes a rapid, disorganized, and uncoordinated twitching of atrial musculature.

Atrial fibrillation

A patient admitted to the telemetry unit has a serum potassium level of 6.6 mEq/L. Which of the following electrocardiographic (ECG) characteristics is commonly associated with this laboratory finding?

Peaked T waves

The T wave is an ECG characteristic reflecting _______of the ______.

repolarization


ventricles

_____ may become tall or “peaked” if a patient’s serum potassium level is _____.

T wave


High

The U wave is an ECG waveform characteristic that may reflect ________.

Purkinje fiber repolarazation

_____ is usually seen when a patient’s serum potassium level is low.

U wave

_______ is used to treat symptomatic bradycardia.

I.V. push atropine

_________ is used to treat heart failure and low cardiac output.

Dobutamine

______- is used to treat ventricular fibrillation and unstable ventricular tachycardia.

Amiodarone

______ is used to treat ventricular ectopy, ventricular tachycardia, and ventricular fibrillation.

Lidocaine

Causes of sinus tachycardia include:

physiologic or psychological stress ,acute blood loss, anemia, shock, hypovolemia, fever, and exercise

Vagal stimulation, sleep, hypothyroidism, athletic training, and Digoxin all will cause a

slow heart rate

In adults, the normal range for the PR is______ seconds.

0.12 to 0.20

A PR internal of 0.24 seconds would indicate a _____.

first-degree heart block

A client with atrial fibrillation, who does not respond to conventional treatment measures and who is not a candidate for cardioversion, would have what procedure recommended?

Maze procedure

The QRS complex on the ECG strip represents _____

ventricular depolarization

A patient with hypertension has a newly diagnosed atrial fibrillation. What medication does the nurse anticipate administering to prevent the complication of atrial thrombi?

Warfarin (Coumadin)

_______ destroys specific cells that are the cause or central conduction route of a tachydysrhythmia.

Catheter ablation

A patient has had several episodes of recurrent tachydysrhythmias over the last 5 months and medication therapy has not been effective. What procedure should the nurse prepare the patient for?

Catheter ablation

The patient is told that she has second-degree AV block with symptomatic bradycardia. The patient will be treated with an anticholinergic that blocks the effects of the vagal nerve. Choose the most likely drug that will be prescribed.

atropine sulfate

Causes of premature atrial complexes include:

caffeine, alcohol, nicotine, stretched atrial myocardium (e.g., as in hypervolemia), anxiety, hypokalemia (low potassium level), hypermetabolic states (e.g., with pregnancy), or atrial ischemia, injury, or infarction.

Premature ventricular contractions (PVCs) are considered precursors of ventricular tachycardia (VT) when they:

occur at a rate of more than six per minute

During electrophysiology studies, the patient is _____ and may experience symptoms related to the ______, reproduced under controlled conditions

awake




arrhythmia.

In the acute care setting, when ventricular fibrillation is noted, the nurse should: ( 2)

call for assistance and defibrillate the patient as soon as possible.

If defibrillation is not readily available,____ is begun until the patient can be defibrillated, followed by advanced cardiovascular life support (ACLS) intervention.

CPR



advanced cardiovascular life support (ACLS) intervention, which includes

endotracheal intubation and administration of epinephrine.

The nurse is assessing a patient with a probable diagnosis of first-degree AV block. He is aware that this dysrhythmia is evident on an ECG strip by which of the following?

Delayed conduction, producing a prolonged PR interval

If symptomatic, the treatment for bradycardia and symptomatic junctional rhythm is :

the patient may be treated with pacing (temporary or permanent), IV atropine, or epinephrine

_____ a cholinergic blocking agent, is given intravenously (IV) to increase a dangerously slow heart rate.

Atropine sulfate,

____ is a rhythm in which every other complex is a PVC

Ventricular Bigeminy

Which of the following is a potential cause of premature ventricular complexes (PVCs)

hypokalemia

_____ caused by cardiac ischemia or infarction, increased workload on the heart (eg, exercise, fever, hypervolemia, heart failure, tachycardia), digitalis toxicity, acidosis, or electrolyte imbalances, especially hypokalemia

premature ventricular complexes

Clients with persistent atrial fibrillation are prescribed ______

anticoagulation therapy, to reduce the risk of emboli formation associated with ineffective circulation.

Atrial fibrillation may be found in people with acute moderate to heavy ingestion of_____.

alcohol

the impulse travels to the AV node in ____seconds

0.12 to 0.2

The nurse in the intensive care unit (ICU) hears an alarm sound in the patient’s room. Arriving in the room, the patient is unresponsive, without a pulse, and a flat line on the monitor. What is the first action by the nurse?

Begin cardiopulmonary resuscitation (CPR)

Prior to cardioversion, cardiac medications are held, and the client is sedated with a medication .

Valium

One of the reasons for lack of pacemaker spikes is _____.

faulty monitoring equipment.

A healthy 46-year-old woman is seeing her health care provider for her annual physical examination. While the nurse is taking the patient's vital signs, the patient states, “Occasionally, my heart skips a beat. Is this normal?” The nurse explains that this feeling is caused by which of the following?

Premature atrial complex

As a long-acting, selective beta1-adrenergic blocker, atenolol

decreases cardiac output and systolic and diastolic blood pressure;

The QT interval is usually _____seconds in duration

0.32 to 0.40

_____ is a nonemergency procedure done by a physician to stop rapid, but not necessarily life-threatening, atrial dysrhythmias

Elective electrical cardioversion

ECG characteristics of atrial fibrillation include:

an atrial rate of 300 to 400, a nonmeasurable PR interval, irregular rhythm, and no discernible P waves

The P wave is an ECG characteristic reflecting conduction of an electrical impulse through the ___.

atria

The PR interval is a component of an ECG tracing reflecting conduction of an electrical impulse through the _____.

av node

The QT interval is an ECG characteristic reflecting the time from_____.

the time from ventricular depolarization to repolorization.

The nurse expects to see which of the following characteristics on an ECG strip for a patient who has third-degree AV block?

More P waves than QRS complexes

With cardioversion, the Defibrillator should be set to deliver a shock during ____.

the QRS complex.