NR 283 Exam 2 - Chamberlain questions and answers graded A+

NR 283 Exam 2 - ChamberlainTachycardia - correct answer abnormally rapid heart rate - above 100 Bradycardia - correct answer abnormally slow heart rate - under 60 preload - correct answer volume of blood in ventricles at end of diastole Afterload - correct answer resistance against which left ventricle pushes blood out Systole - correct answer contraction of heart .... provides increase in pressure to eject blood Diastole - correct answer relaxation of heart.... required for filling chambers When is preload increased? - correct answer hypervolemia, regurgitation of cardiac valves, heart failure When is afterload increased? - correct answer hypertension, vasoconstriction What increases when afterload increases? - correct answer increase in cardiac workload What is cardiac output? - correct answer Volume of blood ejected by the heart in one minute: cardiac output = heart rate x stroke volume What is stroke volume? - correct answer Volume of blood pumped out of ventricle- contraction The heart sound, lubb is due to the _________ . - correct answer closure of AV valves