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Questions and Answers
What is the primary factor determining oxygen demand in individual cardiomyocytes?
What is the primary factor determining oxygen demand in individual cardiomyocytes?
Increased wall stress leads to decreased tension required to pump blood out of the heart.
Increased wall stress leads to decreased tension required to pump blood out of the heart.
False (B)
What is the equation for calculating wall stress?
What is the equation for calculating wall stress?
Wall stress = (LV systolic pressure * radius) / (2 * wall thickness)
A dilated left ventricle, often caused by leaky valves or cardiomyopathy, can lead to ______ oxygen demand.
A dilated left ventricle, often caused by leaky valves or cardiomyopathy, can lead to ______ oxygen demand.
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What is the medical term for a sudden chest pain at rest, often associated with a blockage in a coronary artery?
What is the medical term for a sudden chest pain at rest, often associated with a blockage in a coronary artery?
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Variant angina is often triggered by physical activity and exertion.
Variant angina is often triggered by physical activity and exertion.
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Match the type of angina with its typical characteristics:
Match the type of angina with its typical characteristics:
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What are two potential consequences of a mismatch between oxygen supply and demand in the heart?
What are two potential consequences of a mismatch between oxygen supply and demand in the heart?
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Which of these structures are found within the right atrium? (Select all that apply)
Which of these structures are found within the right atrium? (Select all that apply)
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Epicardial fat is found around the left ventricle.
Epicardial fat is found around the left ventricle.
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What is the name of the muscular band that runs along the IVS and forms part of the medial papillary muscles in the right ventricle?
What is the name of the muscular band that runs along the IVS and forms part of the medial papillary muscles in the right ventricle?
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The ______ is a prominent muscular band found near the RV apex.
The ______ is a prominent muscular band found near the RV apex.
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Match the following valve excrescences with their locations:
Match the following valve excrescences with their locations:
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Which of the following accurately describes the blood flow through arteries?
Which of the following accurately describes the blood flow through arteries?
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Increased blood volume leads to decreased blood flow.
Increased blood volume leads to decreased blood flow.
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What is the name of the force exerted by blood upon the walls of the blood vessels or chambers of the heart ?
What is the name of the force exerted by blood upon the walls of the blood vessels or chambers of the heart ?
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The ______ pump helps veins in the thoracic and abdominal cavities fight gravity to return blood to the heart.
The ______ pump helps veins in the thoracic and abdominal cavities fight gravity to return blood to the heart.
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Which of the following factors can affect blood viscosity?
Which of the following factors can affect blood viscosity?
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Increased vessel radius leads to decreased blood flow.
Increased vessel radius leads to decreased blood flow.
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What is the formula for cardiac output?
What is the formula for cardiac output?
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The ______ is the difference between the rate at which the heart pumps blood and its maximum capacity.
The ______ is the difference between the rate at which the heart pumps blood and its maximum capacity.
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Which of these statements accurately describes the isovolumetric contraction phase of the cardiac cycle?
Which of these statements accurately describes the isovolumetric contraction phase of the cardiac cycle?
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The rapid ejection phase occurs when ventricular pressure drops below aortic pressure.
The rapid ejection phase occurs when ventricular pressure drops below aortic pressure.
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What is the name of the conical pouch or space in the RVOT that is also known as the conus arteriosus?
What is the name of the conical pouch or space in the RVOT that is also known as the conus arteriosus?
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What occurs during isovolumic relaxation?
What occurs during isovolumic relaxation?
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Decreased compliance of the left ventricle causes an increase in left atrial pressure.
Decreased compliance of the left ventricle causes an increase in left atrial pressure.
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What does impaired relaxation of the left ventricle slow down?
What does impaired relaxation of the left ventricle slow down?
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The __________ phase is characterized by the closure of semilunar valves to the closure of AV valves.
The __________ phase is characterized by the closure of semilunar valves to the closure of AV valves.
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During which phase does the mitral valve open, allowing blood to rush into the left ventricle?
During which phase does the mitral valve open, allowing blood to rush into the left ventricle?
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Match the following terms related to the heart with their definitions:
Match the following terms related to the heart with their definitions:
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The atrial contraction phase is indicated by an increase in left ventricular volume.
The atrial contraction phase is indicated by an increase in left ventricular volume.
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The __________ is characterized by the movement of blood from the left atrium to the left ventricle after the mitral valve opens.
The __________ is characterized by the movement of blood from the left atrium to the left ventricle after the mitral valve opens.
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What is the primary consequence of diastolic abnormalities?
What is the primary consequence of diastolic abnormalities?
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Atrial contraction contributes to approximately 50% of total left ventricular filling in a normal heart.
Atrial contraction contributes to approximately 50% of total left ventricular filling in a normal heart.
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What condition is a leading cause of LV hypertrophy?
What condition is a leading cause of LV hypertrophy?
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During __________, the pressures of the left atrium and left ventricle are almost equal.
During __________, the pressures of the left atrium and left ventricle are almost equal.
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Match the following parameters with their corresponding definitions:
Match the following parameters with their corresponding definitions:
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Which of the following symptoms is associated with diastolic dysfunction?
Which of the following symptoms is associated with diastolic dysfunction?
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Patients with diastolic dysfunction typically have a lower risk of morbidity and mortality.
Patients with diastolic dysfunction typically have a lower risk of morbidity and mortality.
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What happens to the heart muscle as one ages in relation to compliance?
What happens to the heart muscle as one ages in relation to compliance?
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The __________ is calculated from the E wave to the baseline, reflecting the rate of decline of the LA/LV pressure gradient.
The __________ is calculated from the E wave to the baseline, reflecting the rate of decline of the LA/LV pressure gradient.
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Which characteristic is typical of a heart experiencing diastolic dysfunction?
Which characteristic is typical of a heart experiencing diastolic dysfunction?
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The E/A ratio is used to determine the filling pattern of the heart.
The E/A ratio is used to determine the filling pattern of the heart.
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What is the consequence of elevated left atrial pressure on the left ventricle?
What is the consequence of elevated left atrial pressure on the left ventricle?
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The __________ measures myocardial velocities at the medial and lateral mitral annulus.
The __________ measures myocardial velocities at the medial and lateral mitral annulus.
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Match the following terms with their descriptions:
Match the following terms with their descriptions:
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What is the most common symptom of ischemic heart disease?
What is the most common symptom of ischemic heart disease?
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Cardiac arrest refers to a lack of electrical activity in the heart.
Cardiac arrest refers to a lack of electrical activity in the heart.
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What are the two types of myocardial infarction identified by ECG?
What are the two types of myocardial infarction identified by ECG?
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Elevated levels of ________ indicate cardiac muscle cell death.
Elevated levels of ________ indicate cardiac muscle cell death.
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Match the following conditions with their definitions:
Match the following conditions with their definitions:
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Which condition is characterized by cardiac electrical activity without a palpable pulse?
Which condition is characterized by cardiac electrical activity without a palpable pulse?
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Cardiac pumps continue to beat adequately during a myocardial infarction.
Cardiac pumps continue to beat adequately during a myocardial infarction.
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What causes a ruptured papillary muscle?
What causes a ruptured papillary muscle?
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The most common etiology of cardiogenic shock is ________ infarction.
The most common etiology of cardiogenic shock is ________ infarction.
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Match the following biomarkers with their characteristics:
Match the following biomarkers with their characteristics:
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Which of the following is a cause of cardiac arrest?
Which of the following is a cause of cardiac arrest?
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Inflammation of the pericardial sac post-MI is referred to as Dressler's syndrome.
Inflammation of the pericardial sac post-MI is referred to as Dressler's syndrome.
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What is paradoxical septal motion?
What is paradoxical septal motion?
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Flashcards
Arrhythmias
Arrhythmias
An irregular heartbeat that can disrupt normal blood flow.
LV Relaxation
LV Relaxation
Ability of heart muscle fibers to return to resting length after contraction.
Isovolumetric Relaxation
Isovolumetric Relaxation
Period after aortic valve closure where all valves are closed, and LV pressure drops.
Early Rapid Filling
Early Rapid Filling
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Diastasis
Diastasis
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Atrial Contraction
Atrial Contraction
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LV Compliance
LV Compliance
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Oxygen supply
Oxygen supply
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Diastolic Dysfunction Causes
Diastolic Dysfunction Causes
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Oxygen demand
Oxygen demand
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Wall stress
Wall stress
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LV systolic pressure
LV systolic pressure
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Systolic dysfunction
Systolic dysfunction
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Dilated LV
Dilated LV
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Myocardial infarction (MI)
Myocardial infarction (MI)
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Concentric hypertrophy
Concentric hypertrophy
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LaPlace law
LaPlace law
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Angina pectoris
Angina pectoris
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Stable angina
Stable angina
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Angina
Angina
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Unstable angina
Unstable angina
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Variant angina
Variant angina
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NSTEMI
NSTEMI
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Atypical angina
Atypical angina
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STEMI
STEMI
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Cardiac arrest
Cardiac arrest
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Pulseless electrical activity (PEA)
Pulseless electrical activity (PEA)
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Biomarkers
Biomarkers
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Troponin
Troponin
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Cardiogenic shock
Cardiogenic shock
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Mitral regurgitation
Mitral regurgitation
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Aneurysm
Aneurysm
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Pseudoaneurysm
Pseudoaneurysm
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PICC lines
PICC lines
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Eustachian ridge
Eustachian ridge
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Lipomatous hypertrophy
Lipomatous hypertrophy
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Cardiac output (CO)
Cardiac output (CO)
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Vasoconstriction
Vasoconstriction
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Viscosity of blood
Viscosity of blood
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Isovolumetric contraction
Isovolumetric contraction
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Tricuspid valve
Tricuspid valve
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Atrial special aneurysm
Atrial special aneurysm
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Ejection fraction (EF)
Ejection fraction (EF)
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E-point septal separation (EPSS)
E-point septal separation (EPSS)
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Coronary artery disease (CAD)
Coronary artery disease (CAD)
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Diastolic filling
Diastolic filling
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Stroke volume (SV)
Stroke volume (SV)
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Collateral circulation
Collateral circulation
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Hypertension
Hypertension
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Aortic stenosis
Aortic stenosis
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Ejection fraction
Ejection fraction
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E wave velocity
E wave velocity
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A wave velocity
A wave velocity
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Deceleration time (DT)
Deceleration time (DT)
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Pulmonary hypertension
Pulmonary hypertension
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Left ventricular hypertrophy
Left ventricular hypertrophy
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Tissue Doppler imaging
Tissue Doppler imaging
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LA pressure
LA pressure
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Diastolic dysfunction
Diastolic dysfunction
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Study Notes
Normal Variants
- Right Atrium:
- Crista terminalis: A C-shaped, fibrous ridge directing blood from superior vena cava (SVC) to inferior vena cava (IVC).
- Eustachian ridge: Located between IVC and coronary sinus, remnant of fetal circulation.
- Eustachian valve: Remnant of fetal circulation.
- Chari network: Fenestrated variant of Eustachian valve.
- Left Atrium:
- Pectinate muscles: Prominent parallel ridges within the left atrial appendage (LAA).
- Coumadin or warfarin ridge: Partition between LAA and left upper pulmonary vein (LUPV).
- Interatrial Septum:
- Lipomatous hypertrophy: Fatty infiltration of interatrial septum, sparing fossa ovalis; typically asymptomatic.
- Ventricular Muscle Bands and False Tendons:
- Moderator band: Muscular band near right ventricular (RV) apex.
- False tendons: Fibrous bands traversing left ventricle (LV) cavity; may be single or multiple.
- Valve Excrescences:
- Tiny filaments, frequently multiple: formed on valve leaflets, located on ventricular side of semilunar valves (Lambl's excrescences) or atrial side.
Hemodynamics
- Blood Flow: Measured in liters per minute, blood moves from high to low pressure, initiated by the heart.
- Arteries: Thick-walled vessels carry oxygenated blood from heart to body, high pressure flow with pulse.
- Arterioles: Small arteries regulating blood flow distribution to capillaries; regulate blood flow and pressure.
- Capillaries: Smallest vessels facilitating gas exchange, maintaining low pressure.
Additional Notes
- Epicardial Fat: Surrounding right ventricle (RV), similar echogenicity to myocardium.
- Atrial Special Aneurysm: Outpouching of interatrial septum (IAS) at fossa ovalis level. Often associated with patent foramen ovale (PFO).
- Excursion:
- Septal tissue excursion >10mm is considered significant.
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Description
Explore the normal variants of the heart's anatomy, including structures like the atria, interatrial septum, and features such as muscular bands and valve excrescences. This quiz will test your knowledge on these fascinating anatomical details, including variations in the right and left atrium, as well as associated fetal remnants.