COMPREHENSIVE CARDIAC ARRHYTHMIAS AND
ISCHEMIC HEART DISEASE REVIEW 2026-2027
EXAM WITH QUESTIONS AND CORRECT
VERIFIED ANSWERS (WELL HIGHLIGHTED) |
CARDIAC ARRHYTHMIAS AND ISCHEMIC HEART
DISEASE| LATEST 2026
What is a cardiac arrhythmia?
Any variation in the normal heartbeat, including disturbances in rhythm, rate, or
conduction pattern.
What are the clinical concerns associated with arrhythmias?
Some arrhythmias are minor, while others can cause severe symptoms or be life-
threatening.
What symptoms may indicate a cardiac arrhythmia?
Symptoms include anxiety, loss of consciousness, and abnormal hemodynamics.
What can trigger potentially fatal arrhythmias?
Strong emotions, various drugs, or dental procedures.
What is the prevalence of arrhythmias in the general population?
5%-15%.
How does age affect the prevalence of arrhythmias?
More common in older adults; 35% of those older than 65 are affected.
What lifestyle factors increase the risk of arrhythmias?
A long history of smoking or alcohol use.
What health conditions are associated with an increased risk of arrhythmias?
Ischemic heart disease, structural heart disease, congestive heart failure, diabetes,
and sleep apnea.
What is Atrial Fibrillation (AF)?
, The most common type of persistent arrhythmia, affecting about 2% of the adult
population.
What is the annual mortality rate associated with Atrial Fibrillation?
AF contributes to about 158,000 deaths each year.
What are the components of the cardiac conduction system?
Sinoatrial (SA) node, Atrioventricular (AV) node, Bundle of His, right and left
bundle branches, and the Purkinje network.
What does the SA node represent on an ECG?
The P wave, which indicates atrial depolarization.
What are the normal functions of cardiac cells?
Automaticity, conductivity, excitability, and contractility.
What are automaticity disorders?
Impulse formation issues leading to ectopic pacemakers.
What are conductivity disorders?
Blocks or delays in conduction causing arrhythmias.
What are primary causes of cardiac arrhythmias?
Cardiovascular disorders, pulmonary disorders, autonomic disorders, systemic
disorders, drug-related effects, and electrolyte imbalances.
What are common symptoms of arrhythmias?
Palpitations, dizziness, syncope, fatigue, and chest discomfort.
What is the initial treatment for symptomatic arrhythmias?
Medications based on symptoms, type of arrhythmia, and underlying heart
condition.
What are the indications for using cardioversion?
Tachyarrhythmias that compromise hemodynamics or are life-threatening.
What is the purpose of oral anticoagulant therapy in AF patients?
ISCHEMIC HEART DISEASE REVIEW 2026-2027
EXAM WITH QUESTIONS AND CORRECT
VERIFIED ANSWERS (WELL HIGHLIGHTED) |
CARDIAC ARRHYTHMIAS AND ISCHEMIC HEART
DISEASE| LATEST 2026
What is a cardiac arrhythmia?
Any variation in the normal heartbeat, including disturbances in rhythm, rate, or
conduction pattern.
What are the clinical concerns associated with arrhythmias?
Some arrhythmias are minor, while others can cause severe symptoms or be life-
threatening.
What symptoms may indicate a cardiac arrhythmia?
Symptoms include anxiety, loss of consciousness, and abnormal hemodynamics.
What can trigger potentially fatal arrhythmias?
Strong emotions, various drugs, or dental procedures.
What is the prevalence of arrhythmias in the general population?
5%-15%.
How does age affect the prevalence of arrhythmias?
More common in older adults; 35% of those older than 65 are affected.
What lifestyle factors increase the risk of arrhythmias?
A long history of smoking or alcohol use.
What health conditions are associated with an increased risk of arrhythmias?
Ischemic heart disease, structural heart disease, congestive heart failure, diabetes,
and sleep apnea.
What is Atrial Fibrillation (AF)?
, The most common type of persistent arrhythmia, affecting about 2% of the adult
population.
What is the annual mortality rate associated with Atrial Fibrillation?
AF contributes to about 158,000 deaths each year.
What are the components of the cardiac conduction system?
Sinoatrial (SA) node, Atrioventricular (AV) node, Bundle of His, right and left
bundle branches, and the Purkinje network.
What does the SA node represent on an ECG?
The P wave, which indicates atrial depolarization.
What are the normal functions of cardiac cells?
Automaticity, conductivity, excitability, and contractility.
What are automaticity disorders?
Impulse formation issues leading to ectopic pacemakers.
What are conductivity disorders?
Blocks or delays in conduction causing arrhythmias.
What are primary causes of cardiac arrhythmias?
Cardiovascular disorders, pulmonary disorders, autonomic disorders, systemic
disorders, drug-related effects, and electrolyte imbalances.
What are common symptoms of arrhythmias?
Palpitations, dizziness, syncope, fatigue, and chest discomfort.
What is the initial treatment for symptomatic arrhythmias?
Medications based on symptoms, type of arrhythmia, and underlying heart
condition.
What are the indications for using cardioversion?
Tachyarrhythmias that compromise hemodynamics or are life-threatening.
What is the purpose of oral anticoagulant therapy in AF patients?
