Gpt Flashcards
What effect does stenosis of the valve have on left ventricular (LV) systolic pressure?
It increases LV systolic pressure.
What happens to LV ejection time (LVET) when there is LV obstruction?
LVET increases.
How does LV obstruction affect aortic pressure?
It decreases aortic pressure.
What is the impact of LV obstruction on LV end-diastolic pressure?
LV end-diastolic pressure increases.
What are the consequences of increased afterload and LV volume overload?
They lead to increased LV mass and eventually LV dysfunction and failure.
How does increased LV systolic pressure affect myocardial oxygen consumption?
It increases myocardial oxygen consumption.
What happens to myocardial perfusion time with increased LVET?
Myocardial perfusion time decreases.
How does an increase in myocardial oxygen consumption combined with a decrease in oxygen supply affect LV function?
It further deteriorates LV function.
What is the relationship between LV mass and myocardial oxygen consumption?
Increased LV mass leads to increased myocardial oxygen consumption.
Why does LV function deteriorate with increased myocardial oxygen consumption and decreased perfusion time?
Because of the imbalance between oxygen demand and supply.
What condition leads to an increase in LV end-diastolic pressure?
LV obstruction due to valve stenosis.
How does LV dysfunction ultimately develop due to valve stenosis?
Through increased afterload, LV volume overload, and increased LV mass.
What does a decrease in aortic pressure signify in the context of LV obstruction?
A reduction in the efficiency of blood ejection from the LV.
