[Exam 2/Final] Chapter 25: Assessment of Cardiovascular Function Flashcards
(114 cards)
What is the S1 sound?
First sound when you hear lub. Tricuspid and Mital valves closing.
Normal Heart Sounds: What is the S2 sound?
The dub, the closing of the aortic and pulmonary valves.
Normal Heart Sounds: What is a S3 sound?
Abnormal early diastolic sound during period of rapid ventricular filling
Normal Heart Sounds: What happens if Mitral valve malfunctioning and blood not flowing as easily from left atrium to left ventricle?
Will hear an extra sound.
Normal Heart Sounds: What can cause extra heart sounds?
Left ventricle being enlarged, hypertension, coronary artery disease, aortic stenosis.
Normal Heart Sounds: What does it mean when you hear lub dub dub?
blood flowing into the left ventricle is met with resistance, and is why you hear this sound.
Normal Heart Sounds: What does it mean if you hear “lub” lub dub
Blood is flowing back into the right ventricle.
Normal Heart Sounds: What is a S4 sound?
Abnormal late diastolic sound during atrial systole
Normal Heart Sounds: Where is the tricuspid valve?
Between Right atrium and ventricle
Normal Heart Sounds: where is the mitral valve?
Between the left atrium and ventricle
Key Terms: What is SV?
Amount of blood ejected from the ventricles per heartbeat. Typicaly will send out 60-130 mL
Key Terms: What is Cardiac Output?
Total amount of blood ejected per ventricle in L per minute.
Key Terms: what is the normal cardiac output?
4-6 L per minute.
Key Terms: What is the formula for CO
HR x SV
Key Terms: Why may a heart rate go up for CO?
To try to get more cardiac output so the body compensates this way.
Key Terms: What is preload
Ventricular filling volume at the highest. Degree of stretch of ventricular muscle fibers, the degree of stretch that the heart can take.
Key Terms: What is afterload?
Resistance to the injection of blood from the ventricles. Resistance ventricles must overcome, the pressure it must overcome to get it ejected into rest of heart.
Key Terms: What is contractility?
How forceful the contraction the myocardium can make, the heart muscle. The squeez
Key Terms: What is ejection fraction
How much blood is being ejected out from left ventricle. Normally 55-65%. Its the end diastolic blood volume.
Key Terms: What is patient experiencing when EF < 40%
Likely has HF and not functioning as well.
Factors Influencing Cardiac Output: What factors influence HR?
Autonomic Innervation,
Hormones,
Fitness Levels,
Age
Factors Influencing Cardiac Output: What factors influence SV>
Heart Size Fitness Level Gender Contractility Duration of Contraction Preload Afterload
Preload and Afterload: What is preload?
Pressure from volume of blodo in ventricles at end of diastole
Preload and Afterload: Preload is increased under what circumstances?
Hypervolemia
Regurgitation of Cardiac Valves
Heart Failure