#1
Which of the following is a major risk factor for cardiovascular diseases?
High blood pressure
ExplanationHigh blood pressure increases the workload on the heart and damages blood vessels.
#2
Which chamber of the heart pumps oxygenated blood to the body?
Left ventricle
ExplanationThe left ventricle pumps oxygen-rich blood to the body through the aorta.
#3
Which of the following is NOT a symptom of a heart attack?
Sudden severe headache
ExplanationWhile chest pain is common, a sudden severe headache is not typically a symptom of a heart attack.
#4
What is the primary function of the coronary arteries?
To carry oxygen-rich blood to the heart muscle
ExplanationCoronary arteries supply oxygen-rich blood to the heart muscle, ensuring its proper function.
#5
What is the primary function of the left ventricle of the heart?
Pumping oxygenated blood to the systemic circulation
ExplanationThe left ventricle pumps oxygen-rich blood to the body through the systemic circulation.
#6
What is the primary cause of a myocardial infarction (heart attack)?
Atherosclerosis
ExplanationAtherosclerosis causes plaque buildup in coronary arteries, leading to blockages and heart attacks.
#7
What is the role of the sinoatrial (SA) node in the heart?
Initiates the heartbeat
ExplanationThe SA node generates electrical impulses, starting each heartbeat.
#8
What is the term for a sudden cessation of cardiac activity with hemodynamic collapse?
Sudden cardiac arrest
ExplanationSudden cardiac arrest is a sudden loss of heart function.
#9
Which of the following is a symptom of peripheral arterial disease (PAD)?
Leg pain while walking
ExplanationPAD causes reduced blood flow to the limbs, leading to pain during physical activity.
#10
Which type of heart failure occurs when the heart muscle becomes stiff and less compliant?
Diastolic heart failure
ExplanationDiastolic heart failure occurs when the heart muscle stiffens and doesn't relax properly.
#11
Which of the following conditions is characterized by the accumulation of fluid in the pericardial sac?
Pericarditis
ExplanationPericarditis involves inflammation and fluid buildup around the heart.
#12
What is the term for the temporary cessation of blood flow to the brain resulting in a sudden loss of consciousness?
Syncope
ExplanationSyncope, or fainting, occurs due to a temporary drop in blood flow to the brain.
#13
Which of the following is a common cause of an acute coronary syndrome (ACS)?
Coronary artery spasm
ExplanationCoronary artery spasm can lead to reduced blood flow to the heart, causing ACS.
#14
What is the primary cause of venous thromboembolism (VTE)?
Deep vein thrombosis (DVT)
ExplanationVTE often occurs due to the formation of blood clots in deep veins, known as deep vein thrombosis (DVT).
#15
What is the primary mechanism of action of aspirin in preventing cardiovascular events?
Inhibiting platelet aggregation
ExplanationAspirin reduces the risk of cardiovascular events by inhibiting the aggregation of platelets, thus preventing blood clot formation.