Heart As A Pump Part 4 Flashcards
What is the continuous murmur:
Persistence after birth of the opening between the aorta and pulmonary artery- sounds like rumble of machinery
Common in young female dogs
Paten ductus arteriosus (PDA)
What is the continuous murmur:
Abnormal openings between peripheral arteries and peripheral veins
Carry turbulent blood flow during both systole and diastole
Audible at the body surface close to the point of fistula
Arteriovenous fistulae
What leads to abnormally high or low blood flow and/or pressure to a region of the body, and Carnatic hypertrophy?
Cardiac defects
The consequences of mitral regurgitation are more noticeable during ______ than during rest
Exercise
What 2 mitral defects can lead to pulmonary edema?
Mitral regurgitation and stenosis
Mitral stenosis is theoretically _____ ventricular hypertrophy
Right
Animals with greatly elevated left atrial pressures usually ____ of the effects of pulmonary edema before they have a chance to develop ______ ventricular hypertrophy
Die
Right
PDA causes exercise ____________
Intolerance
A patient with aortic stenosis may be able to function ____________ at rest but characteristically exhibits exercise intolerance
Normally
Aortic regurgitation: ______ ventricular hypertrophy, pulmonary ________ may develop
Left
Edema
What is the external work done by the ventricle in one cardiac cycle?
Stroke work
Systolic pressure generated is about ___ times higher in the left ventricle than in the right
5
The phase of Isovolumetric contraction requires the expenditure of considerable _________ energy
Muscle
Under normal condition, about ____% of the metabolic energy consumed by the heart appears as heat, only ___% appears as external work
85
15
Almost all of the _____ consumed by the heart is consumed by the left ventricle
Oxygen
