cardio-respiratory and vascular systems: cardiac values Flashcards
define heart rate
number of times the heart beats per minute
define stroke volume
the volume of blood ejected from th left ventricle per beat
define cardiac output
the volume of blood leaving the heart in a minute
define blood pressure
the strength exerted by the blood on the vessel walls as a result of the heart beating
equation for wokring out cardiac output
Q = HR x SV
normal range for heart rate
60 - 90bpm
average heart rate
72 bpm
how do you calculate maximum heart rate
220 - age
average stroke volume at rest
70ml
average stroke volume during exercise
130 ml
average cardiac output at rest
5 L/min
average cardiac output during exercise
20 L/min
average blood pressure
120/80
what counts as high blood pressure
systolic value over 140
what counts as low blood pressure
systolic value below 100
