Cardiovascular Disorders Overview for NURS 3530/3525
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Course
NURS 352
Institution
NURS 352
Cardiovascular Disorders Overview for
NURS 3530/3525
Cardiac Action Potential - answerThe electrical activation of the cell caused by influx of sodium into
cell while potassium exits the cell.
Depolarization - answerElectrical activation of the cell caused by influx of sodium into cell while
p...
Cardiovascular Disorders Overview for
NURS 3530/3525
Cardiac Action Potential - answer✔The electrical activation of the cell caused by influx of sodium into
cell while potassium exits the cell.
Depolarization - answer✔Electrical activation of the cell caused by influx of sodium into cell while
potassium exits the cell - this makes the cell less negative.
Repolarization - answer✔Return of the cell to a resting state caused by reentry of potassium into the cell
while sodium exits.
Effective refractory periods - answer✔Cells cannot depolarize.
Relative refractory - answer✔Cells require stronger than normal stimulus to depolarize.
Sinus rhythm - answer✔Regular rhythm with 1 p wave before each QRS complex, rate 60 - 100.
Sinus bradycardia - answer✔Rate less than 60.
Sinus tachycardia - answer✔Rate greater than 100.
Cardiac Output (CO) - answer✔The amount of blood your heart pumps out in one minute.
Heart Rate (HR) - answer✔How many times your heart beats in one minute.
Stroke Volume (SV) - answer✔The amount of blood pumped out of the heart with each beat.
Ejection Fraction (EF) - answer✔A percentage that shows how much of the blood in the heart is pumped
out with each beat.
Mean Arterial Pressure (MAP) - answer✔The average pressure in your arteries during one heartbeat.
MAP Formula - answer✔SBP + 2 (DBP)/3.
Cardiac Output Formula - answer✔CO = HR X Stroke Volume.
Angina pectoris - answer✔Chest pain when there is inadequate air or blood to the heart.
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