PCCN Exam 2023 with 100% correct answers

What is the function of the cardiovascular system - correct answer -to drive O2 to the cell so that the cell can make ATP for energy production What is the formula for CARDIAC OUTPUT - correct answer -Stroke volume x Heart Rate CO = HR X SV ( Preload + Afterload + Contractility) What is the term for the amount of blood that is pumped out of the ventricle each MINUTE? - correct answer -Cardiac Output ( approximately 4 - 8 LPM ) What is the term for the amount of blood that is pumped out of the ventricle each BEAT? - correct answer -Stroke Volume What is the term for the number of contractions / minute? - correct answer -Heart Rate IMPORTANT RELATIONSHIPS TO KNOW - correct answer -1. CO DECREASED - HR INCREASES ( to maintain adequate stroke volume ) 2. CO INCREASED - HR DECREASES ( as stroke volume decreases ) 3. HR DECREASED - SV DECREASES and CO DECREASES 4. HR INCREASES ( 150 ) - SV DECREASES and CO DECREASES 5. SV DECREASES - CO DECREASES and HR INCREASES