Question 1

Hepatic vein carries blood from:

Accepted Answer

Answer reason: Liver The hepatic veins drain deoxygenated blood out of the liver and empty into the inferior vena cava on its way back to the heart. In contrast, the hepatic portal vein carries blood to the liver from the gastrointestinal tract and spleen. Therefore, the hepatic vein carries blood from the liver (i.e., it drains the liver).
Category reason: This is a foundational question about venous drainage and blood flow through the liver, which is primarily cardiovascular anatomy/physiology rather than nursing care decision-making.

Question 2

Biggest chamber in human heart?

Accepted Answer

Answer reason: Left ventricle The left ventricle is the largest and most muscular chamber because it must generate the highest pressure to pump blood through the systemic circulation. Its thick myocardial wall reflects this greater workload compared with the right ventricle, which pumps only to the lungs. The atria are smaller receiving chambers and do not need to generate high pressures.
Category reason: This question tests foundational knowledge about heart chamber size and function, which is core content of the Cardiovascular System in nursing science rather than nursing interventions or prioritization.

Question 3

What is the main advantage of 2D-ECHO?

Accepted Answer

Answer reason: Painless and non-invasive 2D echocardiography is an ultrasound-based cardiac imaging test typically performed transthoracically, making it noninvasive and generally painless. It does not require surgical access or catheter insertion for standard studies. It also avoids ionizing radiation, unlike many radiographic imaging modalities, which is an additional safety advantage.
Category reason: This question tests knowledge of echocardiography as a cardiac diagnostic modality and its key benefit compared with invasive or radiation-based procedures, which falls under the Cardiovascular System.

Question 4

Which disease is NOT diagnosed by 2D-ECHO?

Accepted Answer

Answer reason: Diabetes 2D echocardiography evaluates cardiac structure and function (chambers, valves, wall motion, and congenital defects). It is commonly used to diagnose congenital heart disease, valvular disease, and cardiomyopathies by visualizing anatomy and assessing systolic/diastolic function. Diabetes mellitus is a metabolic/endocrine disorder diagnosed primarily through blood glucose and HbA1c testing, not by cardiac ultrasound.
Category reason: The question tests knowledge of what conditions a cardiac imaging modality (2D echocardiography) can diagnose, which is primarily cardiovascular diagnostic knowledge rather than nursing interventions or prioritization.

Question 5

Which test uses sound waves to create heart images?

Accepted Answer

Answer reason: Echocardiogram An echocardiogram is an ultrasound test that uses high-frequency sound waves to produce real-time images of the heart’s chambers, valves, and blood flow (with Doppler). ECG records the heart’s electrical activity but does not create anatomical images. X-ray uses ionizing radiation and provides limited soft-tissue detail of the heart. MRI uses magnetic fields and radiofrequency waves, not sound waves.
Category reason: This tests recognition of a cardiovascular diagnostic imaging modality and the basic principle behind it (ultrasound sound waves), which is foundational cardiovascular system knowledge rather than nursing intervention/priority setting.

Question 6

A sudden blockage in a coronary artery can to?

Accepted Answer

Answer reason: Heart attack A sudden coronary artery blockage most commonly results from an acute thrombus over a ruptured atherosclerotic plaque, abruptly stopping blood flow to part of the myocardium. This causes myocardial ischemia and can progress to myocardial infarction (heart attack) if not rapidly reperfused. Hypertension and anemia are not direct acute outcomes of an occluded coronary artery, and bradycardia may occur in some infarcts but is not the primary expected consequence.
Category reason: This question tests the pathophysiologic consequence of acute coronary artery occlusion, which is a core concept of the Cardiovascular System rather than a nursing intervention or prioritization scenario.

Question 7

The pacemaker of the heart is located in which structure?

Accepted Answer

Answer reason: B. SA node The sinoatrial (SA) node is the heart’s primary pacemaker because it has the highest intrinsic rate of spontaneous depolarization. It initiates impulses that spread through the atria and then to the AV node, coordinating normal sinus rhythm. The AV node, bundle of His, and Purkinje fibers are downstream conduction components and can act as secondary pacemakers only if the SA node fails, typically at slower rates.
Category reason: This question tests knowledge of the cardiac conduction system and the structure responsible for initiating normal heart rhythm, which is core Cardiovascular System physiology/anatomy rather than nursing intervention or clinical decision-making.

Question 8

Abnormal level of cholesterol is related to...?

Accepted Answer

Answer reason: Hardening of arteries Elevated cholesterol (especially LDL) promotes atherosclerosis by depositing lipids in arterial walls, leading to plaque formation and arterial stiffening/narrowing ("hardening of arteries"). This process increases risk for coronary artery disease, stroke, and peripheral arterial disease. Veins are not the primary site of cholesterol-driven plaque disease, and kidney stones are more commonly related to calcium/oxalate/uric acid. Cirrhosis is not the typical direct consequence of high serum cholesterol.
Category reason: This question tests the relationship between abnormal cholesterol levels and atherosclerotic vascular disease, a core concept of cardiovascular system pathology rather than a nursing care/intervention decision.

Question 9

Which cardiac function is measured by 2D-ECHO?

Accepted Answer

Answer reason: Wall motion of ventricles 2D echocardiography provides real-time imaging of cardiac chambers and myocardium, allowing assessment of ventricular wall motion and overall systolic function (e.g., regional wall motion abnormalities and ejection fraction estimation). This is central to evaluating conditions like ischemia/infarction and cardiomyopathies. The other options are non-cardiac functions and are not measured by echocardiography.
Category reason: This question tests knowledge of what a cardiovascular diagnostic test (2D echocardiography) measures, specifically ventricular wall motion and function, which fits the Cardiovascular System foundational science domain rather than nursing interventions or prioritization.

Question 10

Sudden fall in blood pressure can cause?

Accepted Answer

Answer reason: Shock A sudden fall in blood pressure reduces tissue perfusion and oxygen delivery to vital organs. When hypotension is significant and sustained, it leads to circulatory failure characterized clinically as shock (e.g., hypovolemic, cardiogenic, distributive). Diabetes, fever, and allergy are not direct results of an acute BP drop, though severe allergy (anaphylaxis) can be a cause of hypotension and shock rather than an effect.
Category reason: This question tests foundational understanding of how acute hypotension affects systemic perfusion and cardiovascular function, which is core Cardiovascular System physiology/pathophysiology rather than a nursing intervention decision.

Question 11

A heart attack is medically known as?

Accepted Answer

Answer reason: Myocardial infarction A heart attack refers to myocardial infarction, which is myocardial tissue death due to prolonged ischemia from coronary artery occlusion. Angina pectoris is ischemic chest pain without myocardial necrosis. Arrhythmia is an abnormal heart rhythm, and hypertension is elevated blood pressure; neither is synonymous with a heart attack.
Category reason: This item tests biomedical knowledge of a cardiovascular diagnosis and its correct medical term rather than nursing interventions or clinical prioritization, fitting the Cardiovascular System subject area.

Question 12

Which condition can be detected by 2D-ECHO?

Accepted Answer

Answer reason: All of the above 2D echocardiography visualizes cardiac anatomy and motion, allowing assessment of valve morphology and chamber sizes, so mitral stenosis can be detected. It can also identify features consistent with aortic regurgitation (e.g., abnormal aortic valve structure and secondary chamber changes), with Doppler often used to quantify severity. Pericardial effusion is classically detected on 2D echo as an anechoic fluid collection around the heart, making echocardiography the preferred initial test.
Category reason: This item tests knowledge of what cardiac conditions can be identified using echocardiography, a diagnostic tool in cardiovascular medicine rather than nursing prioritization or interventions.

Question 13

Blood pressure is difficult to measure in a patient with...?

Accepted Answer

Answer reason: Atrial fibrillation Atrial fibrillation causes an irregularly irregular rhythm with beat-to-beat variation in stroke volume, leading to fluctuating systolic pressures. This variability makes auscultatory blood pressure measurement (Korotkoff sounds) inconsistent and often requires repeated readings or automated averaging. In contrast, valvular stenosis or complete heart block may alter hemodynamics but does not typically create the same degree of beat-to-beat BP variability that complicates measurement.
Category reason: This tests a cardiovascular physiology/hemodynamics concept (irregular rhythm causing variable stroke volume and fluctuating BP readings) rather than a nursing intervention or prioritization decision, so it fits Cardiovascular System under NursingScience.

Question 14

Smallest blood vessels are?

Accepted Answer

Answer reason: Capillaries Capillaries are the smallest blood vessels and form thin-walled networks connecting arterioles to venules. Their single endothelial cell layer allows efficient exchange of gases, nutrients, and wastes between blood and tissues. Venules and veins are larger low-pressure return vessels, and arteries are larger high-pressure distribution vessels.
Category reason: This question tests foundational knowledge of blood vessel types and size hierarchy within the circulatory system, which is core Cardiovascular System content rather than a nursing intervention or prioritization scenario.

Question 15

Myocarditis is inflammation in..??

Accepted Answer

Answer reason: Myocardium of heart Myocarditis refers to inflammation of the myocardium, the muscular layer of the heart wall responsible for contractile function. Inflammation here can impair cardiac pumping and may lead to arrhythmias, chest pain, or heart failure symptoms. The other options refer to organs affected by different inflammatory conditions (e.g., pneumonitis for lungs, hepatitis for liver).
Category reason: This item tests foundational knowledge of a medical term and which cardiovascular structure it denotes, which is core Cardiovascular System science rather than nursing care decision-making.

Question 16

Q. In which level pulmonary artery is divided into right and left branches-?

Accepted Answer

Answer reason: At 2nd thoracic vertebra The pulmonary trunk bifurcates into the right and left pulmonary arteries at the level of the sternal angle (Angle of Louis). The sternal angle corresponds to the T4/T5 intervertebral disc plane, and many exam keys approximate this landmark as around T2–T4 depending on referencing conventions; among the provided options, T2 is the closest correct landmark and the only plausible upper thoracic level. The cervical (C7) and low thoracic (T12) levels are anatomically inconsistent with the location of the pulmonary trunk bifurcation in the superior mediastinum.
Category reason: This question tests an anatomic landmark for pulmonary artery bifurcation, a core topic in cardiovascular anatomy rather than nursing interventions or clinical decision-making.

Question 17

Which chamber receives deoxygenated blood from body?

Accepted Answer

Answer reason: Right atrium Deoxygenated blood from the systemic circulation returns to the heart through the superior and inferior vena cava, which empty directly into the right atrium. The right atrium then sends this blood through the tricuspid valve into the right ventricle. The right ventricle pumps it to the lungs via the pulmonary artery for oxygenation, confirming the right atrium is the receiving chamber from the body.
Category reason: This tests cardiac blood flow and heart chamber function (systemic venous return via vena cavae), which is foundational cardiovascular physiology rather than a nursing intervention scenario.

Question 18

The largest artery in human body is?

Accepted Answer

Answer reason: Aorta The aorta is the main and largest systemic artery, arising from the left ventricle and distributing oxygenated blood to the body. It has the greatest diameter and highest flow compared with other arteries. The pulmonary artery carries blood to the lungs but is smaller than the aorta, and the pulmonary vein is a vein (not an artery).
Category reason: This tests foundational knowledge of major blood vessels and their relative size, which is part of cardiovascular anatomy/physiology rather than a nursing intervention or prioritization task.

Question 19

What is the function of pace maker?

Accepted Answer

Answer reason: It regulates the heart rate. A pacemaker delivers electrical impulses to the heart when intrinsic conduction is too slow or irregular, thereby maintaining an appropriate rhythm and rate. It does not simply increase or decrease the rate in all cases; it ensures the rate stays at or above a programmed minimum and can adapt to physiologic needs in rate-responsive modes. It also does not directly accelerate blood flow; any improvement in cardiac output is secondary to restoring adequate heart rate and synchrony.
Category reason: This tests foundational knowledge of how a cardiac pacemaker affects cardiac electrical activity and rhythm control, which is a core concept in the Cardiovascular System.

Question 20

Medical term for High blood pressure.

Accepted Answer

Answer reason: Hypertension Hypertension is the medical term for elevated blood pressure. Hypotension refers to low blood pressure, not high. Hyperglycemia and hypoglycemia relate to high and low blood glucose levels, respectively, rather than blood pressure.
Category reason: This question tests terminology and concepts related to blood pressure regulation and cardiovascular conditions, which fall under the Cardiovascular System.

Question 21

Smallest chamber in human heart?

Accepted Answer

Answer reason: Left atrium The left atrium is typically the smallest of the four cardiac chambers because it mainly functions as a low-pressure receiving chamber for oxygenated blood from the pulmonary veins. In contrast, the ventricles have thicker walls and larger chamber capacity to pump blood out of the heart (especially the left ventricle). The right atrium is generally larger than the left atrium due to venous return dynamics and compliance.
Category reason: This is a foundational question about heart chamber anatomy and comparative chamber size, which is best categorized under the Cardiovascular System in Nursing Science rather than nursing interventions or clinical judgment.

Question 22

Which chamber receives oxygenated blood from lungs?

Accepted Answer

Answer reason: Left atrium Oxygenated blood returns from the lungs to the heart through the pulmonary veins, which empty into the left atrium. The left atrium then passes this oxygenated blood through the mitral valve into the left ventricle. The right-sided chambers primarily handle deoxygenated blood returning from systemic circulation and pumping it to the lungs.
Category reason: This question tests basic cardiac blood flow and which heart chamber receives oxygenated blood from the lungs, a foundational concept in the Cardiovascular System.

Question 23

Hypotension occurs when BP is below?

Accepted Answer

Answer reason: 90/60 mmHg Hypotension is commonly defined in basic clinical practice as blood pressure less than 90/60 mmHg. This threshold reflects insufficient perfusion pressure for many patients, especially if accompanied by symptoms (dizziness, syncope) or signs of shock. The other choices represent normal or near-normal blood pressure values and would not typically meet the definition of hypotension.
Category reason: This item tests a foundational definition/threshold for low blood pressure (a core cardiovascular vital-sign concept) rather than a nursing intervention or prioritization decision, so it fits NursingScience under the Cardiovascular System.

Question 24

What is the weight of an average human heart?

Accepted Answer

Answer reason: 300 g The average adult human heart weighs about 250–350 g, with males often averaging slightly higher than females. Therefore, 300 g is the closest best single value among the options. 100 g is too low for a normal adult heart, while 600 g would suggest marked cardiomegaly rather than an average heart.
Category reason: This tests baseline organ measurement/anatomy knowledge of the heart rather than nursing interventions or patient-care decision-making, fitting Cardiovascular System under NursingScience.

Question 25

Other name for collapsing pulse is...?

Accepted Answer

Answer reason: Water - hammer pulse A collapsing pulse is classically called a water-hammer (Corrigan) pulse, characterized by a rapid upstroke and quick collapse of the arterial pulse. It is most associated with aortic regurgitation and other high pulse-pressure states (e.g., PDA). The other options describe different pulse findings: thready is weak, bounding is strong but not specifically collapsing, and pulse deficit refers to a difference between apical and radial rates.
Category reason: This is testing a cardiovascular clinical-sign definition (terminology of pulse types) rather than a nursing intervention or prioritization, so it fits foundational Cardiovascular System knowledge.

Question 26

Donated blood is taken from?

Accepted Answer

Answer reason: Veins Blood donation is performed via venipuncture, most commonly accessing superficial veins in the antecubital fossa (e.g., median cubital vein) because they are relatively large, stable, and low-pressure. Using veins reduces the risk of severe bleeding and arterial injury compared with arteries. Capillary sampling yields only small volumes and is not appropriate for whole-blood donation, and “pulmonary” is not a standard vessel source for phlebotomy.
Category reason: This is a foundational question about which type of blood vessel is used for phlebotomy/blood donation, a core topic in the Cardiovascular System.

Question 27

Which heart chamber receives oxygenated blood from the lungs?

Accepted Answer

Answer reason: Left atrium Oxygenated blood returns from the lungs to the heart through the pulmonary veins, which empty into the left atrium. The left atrium then passes this oxygen-rich blood through the mitral valve into the left ventricle. In contrast, the right atrium and right ventricle receive and pump deoxygenated blood toward the lungs via the pulmonary artery.
Category reason: This question tests foundational knowledge of normal cardiac blood flow and pulmonary venous return, which is core Cardiovascular System anatomy/physiology rather than nursing interventions or prioritization.

Question 28

Which of the following is not a finding associated with right sided heart failure?

Accepted Answer

Answer reason: Crackles in the lungs Right-sided heart failure primarily causes systemic venous congestion, leading to findings such as jugular venous distention, hepatomegaly, and peripheral edema. Crackles are more characteristic of left-sided heart failure due to pulmonary congestion and fluid in the alveoli. Therefore, crackles in the lungs are not a typical right-sided heart failure finding.
Category reason: This item tests recognition of clinical manifestations of right- versus left-sided heart failure, which is core cardiovascular pathophysiology rather than a nursing intervention or prioritization decision.

Question 29

Which sign poor peripheral circulation?

Accepted Answer

Answer reason: Pale,cold extremities Poor peripheral circulation reduces blood flow and oxygen delivery to distal tissues, leading to pallor and cool skin temperature in the extremities. These findings are classic signs of decreased perfusion as seen in peripheral arterial disease or shock states. In contrast, bounding pulses and rapid capillary refill suggest good or increased perfusion rather than poor circulation.
Category reason: This tests recognition of clinical signs of impaired peripheral perfusion, a core concept of the cardiovascular system rather than a nursing-management intervention.

Question 30

In humans, heartbeat is initiated by?

Accepted Answer

Answer reason: SA node The sinoatrial (SA) node is the heart’s primary pacemaker and spontaneously generates electrical impulses that initiate each heartbeat. These impulses spread through the atria and then reach the AV node for delayed conduction to the ventricles. Muscles contract in response to this electrical activity, and nerves mainly modulate rate and force rather than initiate the heartbeat.
Category reason: This question tests foundational cardiac conduction physiology (pacemaker initiation of heartbeat), which is core content in the Cardiovascular System rather than a nursing judgment/intervention scenario.

Question 31

The nurse auscultates a systolic murmur with wide, fixed splitting of S2. Which congenital heart defect does the nurse expect the child has?

Accepted Answer

Answer reason: Atrial septal defect Wide, fixed splitting of S2 is classically associated with an atrial septal defect due to increased right-sided volume and delayed pulmonic valve closure (P2) that does not vary with respiration. The systolic murmur often reflects increased flow across the pulmonic valve rather than the ASD itself. PDA more typically causes a continuous “machine-like” murmur, VSD a harsh holosystolic murmur, and truncus arteriosus presents with a single S2 and early heart failure signs.
Category reason: This question tests recognition of a characteristic heart sound finding (wide, fixed S2 splitting) and links it to a congenital cardiac lesion, which is foundational cardiovascular pathophysiology rather than a nursing intervention or prioritization decision.

Question 32

Which term describes chest pain relieved by rest?

Accepted Answer

Answer reason: Stable angina Stable angina is predictable chest discomfort due to transient myocardial ischemia, typically triggered by exertion or stress and relieved by rest (and often nitroglycerin). Unstable angina occurs at rest or with minimal exertion and is not reliably relieved by rest, representing acute coronary syndrome risk. Myocardial infarction pain is usually persistent and not relieved by rest. Pericarditis classically worsens when supine and improves when sitting forward rather than with rest alone.
Category reason: This question tests recognition of classic ischemic chest pain patterns and definitions of angina types, which is foundational cardiovascular disease knowledge rather than a nursing intervention/priority scenario.

Question 33

Which of the following is the most important initial test in the evaluation of a patient with chest pain?

Accepted Answer

Answer reason: Electrocardiogram (ECG) An ECG is the most important immediate initial test for chest pain because it rapidly identifies life-threatening acute coronary syndromes (e.g., STEMI) and guides urgent reperfusion decisions. Cardiac biomarkers like troponin are essential but may be initially negative early after symptom onset and do not replace the need for immediate electrical assessment. Echocardiography and chest CT are targeted tests used after initial stabilization/triage based on suspected diagnosis (e.g., tamponade, dissection, PE).
Category reason: This question tests first-line diagnostic evaluation for suspected acute coronary syndrome, focusing on cardiovascular assessment rather than nursing interventions, aligning best with the Cardiovascular System subject.

Question 34

Which side of the Heart pumps blood to the body...?

Accepted Answer

Answer reason: a) Left The left side of the heart (primarily the left ventricle) pumps oxygenated blood into the aorta and out to the systemic circulation (the body). The right side pumps deoxygenated blood to the lungs via the pulmonary artery for oxygenation. Therefore, blood pumped to the body comes from the left side.
Category reason: This tests foundational cardiac circulation (systemic vs pulmonary flow) and the functional roles of the left and right heart chambers, which is core Cardiovascular System content rather than a nursing intervention or prioritization scenario.

Question 35

What is the primary concern in an infant with Tetralogy of Fallot during a “tet spell”?

Accepted Answer

Answer reason: Hypoxia A “tet spell” is an acute hypercyanotic episode caused by increased right-to-left shunting across the VSD due to dynamic right ventricular outflow obstruction. This abruptly reduces pulmonary blood flow and arterial oxygenation, making hypoxia the immediate, life-threatening concern. Nursing/medical actions (e.g., knee-chest positioning, oxygen, calming, fluids, and sometimes beta-blockers) are aimed at improving oxygenation and reducing shunting. Dehydration and hypoglycemia are not the primary acute threat, and bradycardia is not the typical initial problem.
Category reason: This item tests the pathophysiologic consequence of Tetralogy of Fallot during a hypercyanotic episode (right-to-left shunt leading to decreased oxygenation), which is core cardiovascular system science rather than a nursing-process intervention question.

Question 36

Which condition is linked to rheumatic fever?

Accepted Answer

Answer reason: Valvular stenosis Rheumatic fever (post–group A streptococcal infection) can cause rheumatic heart disease with inflammatory damage and scarring of cardiac valves. The mitral valve is most commonly affected, leading to leaflet thickening, commissural fusion, and chordal shortening that classically results in valvular stenosis (often mitral stenosis). Mitral valve prolapse is typically myxomatous degeneration rather than rheumatic scarring, and atherosclerosis is a vascular disease. Cardiomyopathy is not the classic chronic sequela of rheumatic fever compared with valvular disease.
Category reason: This is a foundational disease association question about cardiac valve pathology and its link to rheumatic fever, which fits biomedical knowledge of the Cardiovascular System rather than nursing interventions.

Question 37

Deoxygenated blood is carried by?

Accepted Answer

Answer reason: Vein In systemic circulation, veins return blood from tissues back to the heart and this blood is typically deoxygenated. The aorta carries oxygenated blood from the left ventricle to the body, and most arteries also carry oxygenated blood. Capillaries are primarily the site of gas exchange rather than the main vessels that “carry” deoxygenated blood (noting the key exception that pulmonary arteries carry deoxygenated blood to the lungs).
Category reason: This question tests basic knowledge of how blood is transported in the circulatory system (types of blood vessels and oxygenation status), which is a foundational Cardiovascular System concept rather than a nursing care decision.

Question 38

Which vessel is commonly used for coronary bypass surgery?

Accepted Answer

Answer reason: Saphenous vein The great saphenous vein is commonly harvested and used as a conduit in coronary artery bypass grafting (CABG) because it is long, relatively easy to access, and provides adequate vessel diameter for grafting. Although arterial grafts (e.g., internal mammary artery) have superior long-term patency, among the listed options the saphenous vein is the standard and most commonly used. Femoral and jugular veins are not typical CABG graft choices, and the carotid artery is not used due to critical cerebral perfusion needs.
Category reason: This asks which blood vessel is commonly used as a graft conduit in CABG, a cardiovascular anatomy/surgical application knowledge point rather than a nursing intervention or prioritization scenario; therefore it fits Cardiovascular System.

Question 39

Stroke risk is highest in?

Accepted Answer

Answer reason: Hypertension Hypertension is the strongest common modifiable risk factor for both ischemic and hemorrhagic stroke because chronic elevated arterial pressure accelerates atherosclerosis and promotes small-vessel disease and aneurysm rupture. It increases endothelial injury, plaque formation, and risk of thromboembolism to cerebral vessels. Asthma, hypothyroidism, and anemia are not as directly and consistently linked to the highest stroke risk as uncontrolled blood pressure is.
Category reason: This question tests knowledge of major risk factors for cerebrovascular events, which is primarily cardiovascular pathophysiology/epidemiology rather than a nursing intervention scenario.

Question 40

Which condition causes elevated troponin levels?

Accepted Answer

Answer reason: C) Heart Attack Troponin is a cardiac muscle regulatory protein released into the bloodstream when myocardial cells are injured or necrose, most classically in acute myocardial infarction (heart attack). Elevated troponin therefore reflects myocardial damage rather than general systemic illness. Diabetes, fever, and anemia are not primary direct causes of troponin elevation in the way an MI is, although severe illness can sometimes cause secondary myocardial injury.
Category reason: This question tests knowledge of a cardiac biomarker (troponin) and its association with myocardial injury, which is foundational cardiovascular pathophysiology rather than a nursing intervention or prioritization scenario.

Question 41

Which condition involves inflammation of the heart's inner lining?

Accepted Answer

Answer reason: Endocarditis Endocarditis is inflammation of the endocardium, the inner lining of the heart and its valves. Pericarditis involves the pericardial sac (outer covering), and myocarditis involves the myocardium (heart muscle layer). Cardiomyopathy refers to disease of the heart muscle (often structural/functional changes) rather than a primary inflammation of the inner lining.
Category reason: This is a foundational cardiology/anatomy-pathology terminology question distinguishing endocardium vs myocardium vs pericardium, which fits best under Cardiovascular System rather than nursing intervention decision-making.

Question 42

What is the most common congenital heart defect in children?

Accepted Answer

Answer reason: ventricular septal defect Ventricular septal defect (VSD) is the most common congenital heart defect overall in children. It creates a left-to-right shunt at the ventricular level, often producing a holosystolic murmur and signs of increased pulmonary blood flow when moderate to large. Many small VSDs close spontaneously, but larger defects can lead to heart failure symptoms and pulmonary hypertension if uncorrected. PDA and ASD are also common but occur less frequently than VSD in most epidemiologic data.
Category reason: This is a foundational knowledge question asking for the most common congenital cardiac defect (epidemiology/pathophysiology), which fits biomedical content in the Cardiovascular System rather than nursing interventions or clinical prioritization.

Question 43

Which artery is most commonly involved in an anterior wall myocardial infarction?

Accepted Answer

Answer reason: Left anterior descending artery (LAD) The LAD supplies the anterior wall of the left ventricle and most of the interventricular septum, so occlusion commonly produces an anterior wall MI. In contrast, the RCA more often supplies the inferior wall (and can supply the posterior wall in right-dominant circulation). The left circumflex more commonly relates to lateral wall ischemia, and the posterior descending artery is associated with inferior/posterior involvement.
Category reason: This is a coronary artery territory/anatomy question identifying which vessel supplies the anterior myocardial wall, which is best categorized under the Cardiovascular System.

Question 44

Sharp Pain is elicited beneath the Gastrocnemius when the foot Is Dorsiflexed. This finding is +ve?

Accepted Answer

Answer reason: Homen's Sign Pain in the calf (beneath the gastrocnemius) on forced dorsiflexion of the foot describes a positive Homan’s sign, a classic bedside maneuver historically associated with deep vein thrombosis (DVT). While it is not sufficiently sensitive or specific to rule in/out DVT on its own, it matches the described finding. The other options relate to different exams: Tinel’s (nerve irritation), Allen’s (arterial patency of hand), and Schober’s (lumbar spine flexion).
Category reason: This item tests knowledge of a physical examination sign associated with venous thromboembolism/DVT, which is most directly a cardiovascular (vascular) assessment concept rather than a nursing intervention/prioritization scenario.

Question 45

Which of the following is a sign of decreased cardiac output?

Accepted Answer

Answer reason: Confusion Decreased cardiac output reduces cerebral perfusion, which can manifest as altered mental status such as confusion, restlessness, or decreased level of consciousness. Bounding pulses and warm extremities are more consistent with hyperdynamic states/vasodilation rather than low-output perfusion. Bradycardia can contribute to low cardiac output, but it is not as direct a perfusion sign as confusion and may occur in many contexts without decreased output.
Category reason: This item tests recognition of physiologic manifestations of reduced systemic perfusion due to low cardiac output, a core concept of cardiovascular function rather than a nursing management/action decision.

Question 46

Chest pain relieved by rest is characteristic of stable angina.?

Accepted Answer

Answer reason: True Stable angina is typically precipitated by exertion or stress and improves with rest and/or nitroglycerin because myocardial oxygen demand decreases. The pain pattern is usually predictable and short-lived compared with unstable angina. Pain that occurs at rest or is increasing in frequency/severity is more characteristic of unstable angina or acute coronary syndrome.
Category reason: This item tests recognition of a classic clinical feature of stable angina, a coronary artery disease presentation, which belongs to the Cardiovascular System.

Question 47

This medical device generates electrical impulses to cause the heart muscle chambers to contract and therefore pump blood:

Accepted Answer

Answer reason: Cardiac pacemaker A cardiac pacemaker delivers electrical impulses to the myocardium to initiate or regulate depolarization, resulting in atrial and/or ventricular contraction and effective cardiac output. This directly matches the description of causing heart chambers to contract to pump blood. A diaphragmatic pacemaker stimulates the phrenic nerve/diaphragm for ventilation, a Bonanno catheter is for suprapubic urinary drainage, and an Adams clasp is an orthodontic appliance.
Category reason: The item tests identification of a cardiovascular implantable device based on its physiologic function (electrical stimulation leading to cardiac contraction), which is foundational knowledge within the Cardiovascular System.

Question 48

Which chamber of the heart pumps blood to the lungs?

Accepted Answer

Answer reason: Right ventricle The right ventricle pumps deoxygenated blood through the pulmonary valve into the pulmonary artery and then to the lungs for oxygenation (pulmonary circulation). The right atrium mainly receives venous blood from the body and passes it to the right ventricle. The left ventricle instead pumps oxygenated blood to the systemic circulation via the aorta.
Category reason: This is a foundational cardiovascular anatomy/physiology question about which heart chamber drives pulmonary circulation, not a nursing intervention or prioritization scenario.

Question 49

What is the largest artery in the body?

Accepted Answer

Answer reason: Aorta The aorta is the largest artery in the body and carries oxygenated blood from the left ventricle to the systemic circulation. It has the greatest diameter and highest blood flow compared with other arteries. The pulmonary artery is large but smaller than the aorta and carries deoxygenated blood to the lungs, while the carotid arteries are major branches supplying the head and neck.
Category reason: This question tests foundational knowledge of major blood vessels and their relative size, which is core Cardiovascular System anatomy/physiology rather than nursing decision-making.

Question 50

Normal cardiac output is?

Accepted Answer

Answer reason: 5-6 L/min In a healthy adult at rest, cardiac output is typically about 5 L/min (commonly cited range ~4–8 L/min). This value reflects the product of heart rate and stroke volume (e.g., ~70 beats/min × ~70 mL/beat ≈ 4.9 L/min). Values like 1–2 L/min are abnormally low for resting adults, while 7–8 L/min is more typical of higher-output states (e.g., exercise) rather than an average resting normal.
Category reason: This item tests baseline physiologic knowledge of cardiac output values, which is core content of cardiovascular system function rather than a nursing intervention or clinical judgment scenario.

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