Question 1

The AV node has the ability to spontaneously generate an electrical impulse if the impulse is not received from the SA node.

Accepted Answer

A) True 
 B)False  True

Question 2

Dysrhythmias that originate in the ventricles are sometimes referred to as supraventricular.

Accepted Answer

A) True 
 B)False  False

Question 3

Beta-adrenergic blockers reduce automaticity and increase conduction velocity in the heart.

Accepted Answer

A) True 
 B)False  False

Question 4

With respect to ion channels, describe how the various classes of drugs work to correct rhythm problems.

Accepted Answer

Potassium channel blockers: block potass

Question 5

The pharmacist teaches the patient that which diseases are associated with dysrhythmias?
(Select all that apply.) Note: Credit will be given only if all correct choices and no incorrect choices are selected.

Accepted Answer

A)  Arthritis 
B)  Hypertension 
C)  Hyperkalemia 
D)  Myocardial infarction 
E)  Diabetes 
A)  Arthritis 
B)  Hypertension 
C)  Hyperkalemia 
D)  Myocardial infarction 
E)  Diabetes

Question 6

What would happen if the impulse never reached the AV node?

Accepted Answer

The AV node would generate an

Question 7

The patient has a dysrhythmia, and is started on a calcium channel blocker. What is the rationale for why this patient is being treated with this type of medication?

Accepted Answer

A)  Is not a candidate for an ICD. 
B)  Will have fewer side effects. 
C)  Has a supraventricular dysrhythmia. 
D)  Will respond quicker. 
A)  Is not a candidate for an ICD. 
B)  Will have fewer side effects. 
C)  Has a supraventricular dysrhythmia. 
D)  Will respond quicker.

Question 8

All antidysrhythmic drugs have the potential to cause a dysrhythmia.

Accepted Answer

A) True 
 B)False

Question 9

Potassium channel blockers initiate the depolarization of the impulse.

Accepted Answer

A) True 
 B)False

Question 10

An action potential begins when sodium ion channels located in the plasma membrane open and Na+ rushes into the cell, producing :

Accepted Answer

A)  A relaxation of the atria and ventricles 
B)  A rapid depolarization 
C)  A rapid repolarization 
D)  A refractory period 
A)  A relaxation of the atria and ventricles 
B)  A rapid depolarization 
C)  A rapid repolarization 
D)  A refractory period

Question 11

What happens to the heart when it is defibrillated?

Accepted Answer

The electrical shock from the

Question 12

The physician has ordered a non-pharmacologic therapy for a patient diagnosed with bradycardia. The pharmacist anticipates what to be ordered for this patient?

Accepted Answer

A)  Defibrillation 
B)  Cardiac pacemakers 
C)  Cardioversion 
D)  Increased exercise 
A)  Defibrillation 
B)  Cardiac pacemakers 
C)  Cardioversion 
D)  Increased exercise

Question 13

Some dysrhythmias produce no symptoms and have negligible effects on heart while others are life threatening and require immediate treatment.

Accepted Answer

A) True 
 B)False

Question 14

Cardiac pacemakers are sometimes inserted to correct tachycardia.

Accepted Answer

A) True 
 B)False

Question 15

A patient presents in the Emergency Department with a cardiac dysrhythmia. The pharmacist investigates possible causes of the dysrhythmia. Which items in the patient's medical record could be the cause of the dysrhythmia? (Select all that apply.) Note: Credit will be given only if all correct choices and no incorrect choices are selected.

Accepted Answer

A)  Anxiety 
B)  Caffeine ingestion 
C)  Hypoxia 
D)  Tobacco use 
E)  Diabetes 
A)  Anxiety 
B)  Caffeine ingestion 
C)  Hypoxia 
D)  Tobacco use 
E)  Diabetes

Question 16

The pharmacist is dispensing adenosine to a patient. What is the correct half-life for the medication?

Accepted Answer

A)  10 days. 
B)  10 seconds. 
C)  10 hours. 
D)  10 minutes. 
A)  10 days. 
B)  10 seconds. 
C)  10 hours. 
D)  10 minutes.

Question 17

The flow of the electrical impulse through a normal functioning heart is in this order:

Accepted Answer

A)  AV node to SA node to Bundle of His to Purkinje fibers 
B)  AV node to SA node to Bundle of His to Right and Left Branches to Purkinje fibers 
C)  SA node to AV node to Bundle of His to Purkinje fibers to Right and Left Branches 
D)  SA node to AV node to Bundle of His to Right and Left Branches to Purkinje fibers 
A)  AV node to SA node to Bundle of His to Purkinje fibers 
B)  AV node to SA node to Bundle of His to Right and Left Branches to Purkinje fibers 
C)  SA node to AV node to Bundle of His to Purkinje fibers to Right and Left Branches 
D)  SA node to AV node to Bundle of His to Right and Left Branches to Purkinje fibers

Question 18

A patient has been prescribed diltiazem. The pharmacist should instruct the patient to notify the physician if which side effects occur? (Select all that apply.) Note: Credit will be given only if all correct choices and no incorrect choices are selected.

Accepted Answer

A)  Systolic blood pressure is less than 90 mm Hg. 
B)  Dizziness occurs when standing up quickly. 
C)  Heart rate is less than 60 beats per minute. 
D)  Blood glucose increases. 
E)  Hypoglycemia 
A)  Systolic blood pressure is less than 90 mm Hg. 
B)  Dizziness occurs when standing up quickly. 
C)  Heart rate is less than 60 beats per minute. 
D)  Blood glucose increases. 
E)  Hypoglycemia

Question 19

The more serious types of dysrhythmias are corrected through electrical shock of the heart, a treatment called:

Accepted Answer

A)  Debridement 
B)  Cardiac ablation 
C)  Cardioversion or defibrillation 
D)  Installing a pacemaker 
A)  Debridement 
B)  Cardiac ablation 
C)  Cardioversion or defibrillation 
D)  Installing a pacemaker

Question 20

The pharmacist caring for a patient with a dysrhythmia understands the effects of which drug can last 4-8 weeks after the drug is discontinued because it has an extended half-life that can exceed 100 days?

Accepted Answer

A)  Digoxin 
B)  Verapamil 
C)  Propranolol 
D)  Amiodarone 
A)  Digoxin 
B)  Verapamil 
C)  Propranolol 
D)  Amiodarone

Exam 18: Drugs for Dysrhythmias

The AV node has the ability to spontaneously generate an electrical impulse if the impulse is not received from the SA node.

Dysrhythmias that originate in the ventricles are sometimes referred to as supraventricular.

Beta-adrenergic blockers reduce automaticity and increase conduction velocity in the heart.

With respect to ion channels, describe how the various classes of drugs work to correct rhythm problems.

The pharmacist teaches the patient that which diseases are associated with dysrhythmias? (Select all that apply.) Note: Credit will be given only if all correct choices and no incorrect choices are selected.

What would happen if the impulse never reached the AV node?

The patient has a dysrhythmia, and is started on a calcium channel blocker. What is the rationale for why this patient is being treated with this type of medication?

All antidysrhythmic drugs have the potential to cause a dysrhythmia.

Potassium channel blockers initiate the depolarization of the impulse.

An action potential begins when sodium ion channels located in the plasma membrane open and Na+ rushes into the cell, producing :

What happens to the heart when it is defibrillated?

The physician has ordered a non-pharmacologic therapy for a patient diagnosed with bradycardia. The pharmacist anticipates what to be ordered for this patient?

Some dysrhythmias produce no symptoms and have negligible effects on heart while others are life threatening and require immediate treatment.

Cardiac pacemakers are sometimes inserted to correct tachycardia.

The pharmacist is dispensing adenosine to a patient. What is the correct half-life for the medication?

The flow of the electrical impulse through a normal functioning heart is in this order:

A patient has been prescribed diltiazem. The pharmacist should instruct the patient to notify the physician if which side effects occur? (Select all that apply.) Note: Credit will be given only if all correct choices and no incorrect choices are selected.

The more serious types of dysrhythmias are corrected through electrical shock of the heart, a treatment called:

The pharmacist caring for a patient with a dysrhythmia understands the effects of which drug can last 4-8 weeks after the drug is discontinued because it has an extended half-life that can exceed 100 days?

The Practice of Pharmacy

Drug Classification, Regulation, and Approval

Drug Forms and Routes of Drug Administration

Pharmacokinetics

Pharmacodynamics

Substance Abuse

Using Drug References

Drugs for Disorders Associated With the Autonomic Nervous System

Drugs for Anxiety, Daytime Sedation, and Insomnia

Drugs for Emotional, Behavioural, and Mood Disorders

Drugs for Psychoses and Degenerative Diseases

Drugs for Seizures

Drugs for the Control of Pain and Fever

Drugs for Local and General Anaesthesia

Drugs for Coagulation Disorders

Drugs for Hypertension

Drugs for Heart Failure

Drugs for Chest Pain, Myocardial Infraction, and Stroke

Drugs for Lipid Disorders

Drugs for Shock and Anaphylaxis

Drugs for Kidney, Acid-Base, and Electrolyte Disorders

Drugs for Bacterial Infections

Drugs for Fungal, Viral, and Parasitic Diseases

Drugs for Neoplasia

Drugs for Respiratory Disorders

Drugs for Immune System Modulation

Drugs for Eye and Ear Disorders

Drugs for Gastrointestinal Disorders

Vitamins, Minerals, and Nutritional Supplments

Drugs for Muscle Spasm and Bone Disorder

Drugs for Skin Disorders

Drugs for Endocrine Disorders

Drugs for Disorders and Conditions of the Reproductive System

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