#1
What is ventricular fibrillation?
A normal heart rhythm
An irregular heart rhythm originating in the atria
An irregular heart rhythm originating in the ventricles
A rapid but coordinated heart rhythm
#2
Which of the following is a common cause of ventricular fibrillation?
Hypertension
Bradycardia
Electrical shock
Atrial fibrillation
#3
What is the term for a rapid, irregular heart rate originating from the atria?
Ventricular tachycardia
Atrial fibrillation
Ventricular fibrillation
Bradycardia
#4
What is the immediate management step for ventricular fibrillation in a healthcare setting?
Administering intravenous fluids
Performing synchronized cardioversion
Starting oral medication
Initiating chest compressions and defibrillation
#5
What is the treatment of choice for ventricular fibrillation?
Antibiotics
Cardiopulmonary resuscitation (CPR)
Hyperventilation
Anticoagulants
#6
Which of the following is a characteristic of ventricular fibrillation on an electrocardiogram (ECG)?
Regular and narrow QRS complexes
Absence of P waves
Sawtooth-shaped P waves
Synchronized atrial and ventricular contractions
#7
Which of the following is a potential complication of untreated ventricular fibrillation?
Hypotension
Heart block
Sudden cardiac death
Hyperkalemia
#8
Which of the following medications is commonly used to treat ventricular fibrillation?
Beta blockers
Calcium channel blockers
Amiodarone
Diuretics
#9
Which of the following is a risk factor for developing ventricular fibrillation?
Regular exercise
Hypokalemia
A healthy diet
Coronary artery disease
#10
What is the main difference between ventricular fibrillation and ventricular tachycardia?
Ventricular fibrillation is slow and irregular, while ventricular tachycardia is fast and regular.
Ventricular fibrillation is fast and regular, while ventricular tachycardia is slow and irregular.
Both are slow and irregular.
Both are fast and regular.
#11
Which of the following conditions is most likely to precede the development of ventricular fibrillation?
Hypertension
Atrial fibrillation
Ventricular tachycardia
Myocardial infarction
#12
What is the term for an abnormal rhythm originating in the sinus node, resulting in heartbeats slower than normal?
Sinus arrhythmia
Sinus tachycardia
Sinus bradycardia
Sinus dysrhythmia
#13
Which of the following may increase the risk of ventricular fibrillation?
Adequate potassium levels
Low blood pressure
Long QT syndrome
Sinus rhythm
#14
Which of the following is a characteristic of ventricular fibrillation on a cardiac monitor?
Regular QRS complexes
Regular P waves
Irregular rhythm
Absence of QRS complexes
#15
What is the most common initial rhythm observed during sudden cardiac arrest?
Sinus rhythm
Ventricular tachycardia
Asystole
Atrial fibrillation
#16
What is the term for a brief cessation of cardiac activity resulting from myocardial ischemia?
Cardiogenic shock
Angina pectoris
Cardiac arrest
Transient ischemic attack
#17
Which of the following is a potential complication of defibrillation?
Ventricular fibrillation
Atrial fibrillation
Heart block
Bradycardia
#18
What is the term for a condition characterized by chaotic, irregular electrical activity in the atria?
Atrial flutter
Atrial tachycardia
Atrial fibrillation
Supraventricular tachycardia
#19
Which of the following is a possible consequence of prolonged ventricular fibrillation?
Increased cardiac output
Myocardial infarction
Ventricular tachycardia
Brain damage
#20
What is the primary cause of ventricular fibrillation in patients with acute myocardial infarction?
Myocardial ischemia
Hypertension
Hyperkalemia
Atrial fibrillation
#21
Which of the following can be a symptom of ventricular fibrillation?
Chest pain
Slow breathing
Normal pulse
Regular heart rhythm
#22
What is the purpose of defibrillation in the management of ventricular fibrillation?
To stop the heart
To synchronize atrial and ventricular contractions
To restore normal heart rhythm
To administer medication directly to the heart
#23
What is the approximate survival rate for patients experiencing ventricular fibrillation outside of a hospital setting without immediate intervention?
Less than 5%
Around 50%
Over 90%
100%