Cardiopulmonary Part One Flashcards
(49 cards)
Where does LV pump blood to and how does it get there
Pumps blood systemically
Via aorta
What is a clinically useful measure of LV function
Ejection fraction
How is cardiac output determined (math)
HR x SV
Purpose of atriventricular valves
Prevent backflow of blood into atria during systole
Of the four tissues of the heart, what is the major portion.
Myocardium
When do the atrioventricular valves close
When ventricles contract
Hypokalemia can lead to what heart issues
Arrhythmia
V-fib
What is atrial filling pressure
Difference between venous and atrial pressures
Where does left atrium receive blood from
Lungs
And four pulmonary veins
What is stroke volume
Amount of blood ejected with each myocardial contraction
Purpose of aortic valve
Prevents left backflow
Two semilunar valves
Pulmonary
Aortic
What is cardiac output
Amount of blood discharged from the left or right ventricle per minute
What is cardiac index
CO divided by body’s surface area
Three things that influence stroke volume
Left ventricular end diastolic volume
Contractility
Afterload
Normal cardiac output range
4-5 L per minute
How many mLs for end systolic volume
50 mLs
Hypomagnesemia lead to
Ventricular arrhytmia
Coronary artery vasospasm
Sudden death
What is ejection fraction
Percentage of blood emptied from the ventricle during systole
Myocardium
Heart muscle
Pericardium
Fibrous protective sac enclosing heart
Amount of mLs for end-diastolic volume
120 mLs
Endocardium
Smooth lining of the inner surface and cavities of the heart
What side is the bicuspid/mitral valve on
Left
