KINS 1224 - Lab 4 - Blood Pressure

blood pressure

the pressure that is exerted by the blood against the walls of blood vessels

systolic pressure

Blood pressure in the arteries during contraction of the ventricles.

which number in BP is systolic pressure

top number on a blood pressure reading

diastolic blood pressure

the pressure in the arteries when the left ventricle is refilling

what number in BP is diastolic pressure

bottom number on a blood pressure reading

radial pulse

the pulse located on the inside of the wrist, where the radial artery runs just beneath the skin

brachial pulse

the pulse felt in the upper arm

carotid pulse

the pulse felt along the large carotid artery on either side of the neck

mean arterial pressure (MAP)

the average blood pressure over a single cardiac cycle

MAP formula

DBP + PP / 3

Pulse pressure

difference between systolic and diastolic pressure

pulse pressure formula

systolic pressure - diastolic pressure

baroreceptor

a sensory receptor that responds to changes in pressure; for example, there are baroreceptors in the carotid arteries and the aortic arch that monitor blood pressure

heart rate

number of beats per minute

sphygmomanometer

instrument to measure blood pressure

korotkoff sounds

series of sounds that correspond to changes in blood flow through an artery as pressure is released

korotkoff sounds - systolic

first clear, repetitive tapping sound

korotkoff sounds - diastolic

point of silence when all sounds disappear

Stroke Volume (SV)

The amount of blood pumped out of the heart with each contraction.

Stroke volume equation

SV = EDV - ESV (end diastolic volume - end systolic volume)

cardiac output

Volume of blood pumped by the heart per minute.

cardiac output equation

CO = HR x SV

cardioacceleratory center

controls sympathetic neurons that increase the heart rate

cardioinhibitory center

controls the parasympathetic neurons that slow the heart rate

vasomotor center

adjusts blood vessel diameter for blood pressure regulation

vasodilation

Widening of blood vessels to increase blood flow.

vasoconstriction

decreasing the diameter of blood vessels to reduce blood flow

what is the unit of measurement for blood pressure

mmHg (millimeters of mercury)

Which of the following is the average blood pressure value when the ventricles contract and blood is ejected into the aorta?

systolic BP

You measure a patient's blood pressure and get a reading of 118/72. What is the diastolic BP?

72

3 multiple choice options

You measure a patient's blood pressure and get a reading of 118/72. What is the pulse pressure?

46

3 multiple choice options

You measure a patient's blood pressure and get a reading of 118/72. What is the mean arterial pressure? (note: round to the nearest whole number)

87

3 multiple choice options

Which artery should be used to measure blood pressure?

Brachial

Calculate the cardiac output (CO) given the following information? Heart rate (HR): 70 bpmSystolic BP: 124 mmHgDiastolic BP: 82 mmHgStroke volume (SV): 70 mL

4,900 mL/min

3 multiple choice options

A baroreceptor in the aortic arch senses an increased stretch in the aorta. Which of the following would be a response to this stimulus?

cardioacceleratory center is inhibited, cardioinhibitory center is excited, vasomotor center is inhibited

3 multiple choice options

A baroreceptor in the aortic arch senses an increased stretch in the aorta. Which of the following would be a response to this stimulus?

Decreased HR, decreased CO, vasodilation

3 multiple choice options