Podcast
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?
- Ventricular wall stress (correct)
- Heart rate
- Coronary artery blood flow
- Blood oxygen carrying capacity
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.
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?
Variant angina is often triggered by physical activity and exertion.
Variant angina is often triggered by physical activity and exertion.
Match the type of angina with its typical characteristics:
Match the type of angina with its typical characteristics:
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?
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)
Epicardial fat is found around the left ventricle.
Epicardial fat is found around the left 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?
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?
The ______ is a prominent muscular band found near the RV apex.
The ______ is a prominent muscular band found near the RV apex.
Match the following valve excrescences with their locations:
Match the following valve excrescences with their locations:
Which of the following accurately describes the blood flow through arteries?
Which of the following accurately describes the blood flow through arteries?
Increased blood volume leads to decreased blood flow.
Increased blood volume leads to decreased blood flow.
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 ?
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.
Which of the following factors can affect blood viscosity?
Which of the following factors can affect blood viscosity?
Increased vessel radius leads to decreased blood flow.
Increased vessel radius leads to decreased blood flow.
What is the formula for cardiac output?
What is the formula for cardiac output?
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.
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?
The rapid ejection phase occurs when ventricular pressure drops below aortic pressure.
The rapid ejection phase occurs when ventricular pressure drops below aortic pressure.
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?
What occurs during isovolumic relaxation?
What occurs during isovolumic relaxation?
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.
What does impaired relaxation of the left ventricle slow down?
What does impaired relaxation of the left ventricle slow down?
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.
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?
Match the following terms related to the heart with their definitions:
Match the following terms related to the heart with their definitions:
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.
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.
What is the primary consequence of diastolic abnormalities?
What is the primary consequence of diastolic abnormalities?
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.
What condition is a leading cause of LV hypertrophy?
What condition is a leading cause of LV hypertrophy?
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.
Match the following parameters with their corresponding definitions:
Match the following parameters with their corresponding definitions:
Which of the following symptoms is associated with diastolic dysfunction?
Which of the following symptoms is associated with diastolic dysfunction?
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.
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?
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.
Which characteristic is typical of a heart experiencing diastolic dysfunction?
Which characteristic is typical of a heart experiencing diastolic dysfunction?
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.
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?
The __________ measures myocardial velocities at the medial and lateral mitral annulus.
The __________ measures myocardial velocities at the medial and lateral mitral annulus.
Match the following terms with their descriptions:
Match the following terms with their descriptions:
What is the most common symptom of ischemic heart disease?
What is the most common symptom of ischemic heart disease?
Cardiac arrest refers to a lack of electrical activity in the heart.
Cardiac arrest refers to a lack of electrical activity in the heart.
What are the two types of myocardial infarction identified by ECG?
What are the two types of myocardial infarction identified by ECG?
Elevated levels of ________ indicate cardiac muscle cell death.
Elevated levels of ________ indicate cardiac muscle cell death.
Match the following conditions with their definitions:
Match the following conditions with their definitions:
Which condition is characterized by cardiac electrical activity without a palpable pulse?
Which condition is characterized by cardiac electrical activity without a palpable pulse?
Cardiac pumps continue to beat adequately during a myocardial infarction.
Cardiac pumps continue to beat adequately during a myocardial infarction.
What causes a ruptured papillary muscle?
What causes a ruptured papillary muscle?
The most common etiology of cardiogenic shock is ________ infarction.
The most common etiology of cardiogenic shock is ________ infarction.
Match the following biomarkers with their characteristics:
Match the following biomarkers with their characteristics:
Which of the following is a cause of cardiac arrest?
Which of the following is a cause of cardiac arrest?
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.
What is paradoxical septal motion?
What is paradoxical septal motion?
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
Signup and view all the flashcards
Diastasis
Diastasis
Signup and view all the flashcards
Atrial Contraction
Atrial Contraction
Signup and view all the flashcards
LV Compliance
LV Compliance
Signup and view all the flashcards
Oxygen supply
Oxygen supply
Signup and view all the flashcards
Diastolic Dysfunction Causes
Diastolic Dysfunction Causes
Signup and view all the flashcards
Oxygen demand
Oxygen demand
Signup and view all the flashcards
Wall stress
Wall stress
Signup and view all the flashcards
LV systolic pressure
LV systolic pressure
Signup and view all the flashcards
Systolic dysfunction
Systolic dysfunction
Signup and view all the flashcards
Dilated LV
Dilated LV
Signup and view all the flashcards
Myocardial infarction (MI)
Myocardial infarction (MI)
Signup and view all the flashcards
Concentric hypertrophy
Concentric hypertrophy
Signup and view all the flashcards
LaPlace law
LaPlace law
Signup and view all the flashcards
Angina pectoris
Angina pectoris
Signup and view all the flashcards
Stable angina
Stable angina
Signup and view all the flashcards
Angina
Angina
Signup and view all the flashcards
Unstable angina
Unstable angina
Signup and view all the flashcards
Variant angina
Variant angina
Signup and view all the flashcards
NSTEMI
NSTEMI
Signup and view all the flashcards
Atypical angina
Atypical angina
Signup and view all the flashcards
STEMI
STEMI
Signup and view all the flashcards
Cardiac arrest
Cardiac arrest
Signup and view all the flashcards
Pulseless electrical activity (PEA)
Pulseless electrical activity (PEA)
Signup and view all the flashcards
Biomarkers
Biomarkers
Signup and view all the flashcards
Troponin
Troponin
Signup and view all the flashcards
Cardiogenic shock
Cardiogenic shock
Signup and view all the flashcards
Mitral regurgitation
Mitral regurgitation
Signup and view all the flashcards
Aneurysm
Aneurysm
Signup and view all the flashcards
Pseudoaneurysm
Pseudoaneurysm
Signup and view all the flashcards
PICC lines
PICC lines
Signup and view all the flashcards
Eustachian ridge
Eustachian ridge
Signup and view all the flashcards
Lipomatous hypertrophy
Lipomatous hypertrophy
Signup and view all the flashcards
Cardiac output (CO)
Cardiac output (CO)
Signup and view all the flashcards
Vasoconstriction
Vasoconstriction
Signup and view all the flashcards
Viscosity of blood
Viscosity of blood
Signup and view all the flashcards
Isovolumetric contraction
Isovolumetric contraction
Signup and view all the flashcards
Tricuspid valve
Tricuspid valve
Signup and view all the flashcards
Atrial special aneurysm
Atrial special aneurysm
Signup and view all the flashcards
Ejection fraction (EF)
Ejection fraction (EF)
Signup and view all the flashcards
E-point septal separation (EPSS)
E-point septal separation (EPSS)
Signup and view all the flashcards
Coronary artery disease (CAD)
Coronary artery disease (CAD)
Signup and view all the flashcards
Diastolic filling
Diastolic filling
Signup and view all the flashcards
Stroke volume (SV)
Stroke volume (SV)
Signup and view all the flashcards
Collateral circulation
Collateral circulation
Signup and view all the flashcards
Hypertension
Hypertension
Signup and view all the flashcards
Aortic stenosis
Aortic stenosis
Signup and view all the flashcards
Ejection fraction
Ejection fraction
Signup and view all the flashcards
E wave velocity
E wave velocity
Signup and view all the flashcards
A wave velocity
A wave velocity
Signup and view all the flashcards
Deceleration time (DT)
Deceleration time (DT)
Signup and view all the flashcards
Pulmonary hypertension
Pulmonary hypertension
Signup and view all the flashcards
Left ventricular hypertrophy
Left ventricular hypertrophy
Signup and view all the flashcards
Tissue Doppler imaging
Tissue Doppler imaging
Signup and view all the flashcards
LA pressure
LA pressure
Signup and view all the flashcards
Diastolic dysfunction
Diastolic dysfunction
Signup and view all the flashcards
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.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.