Cardiac Output and Blood Pressure

blood pressure

• stethoscope

• thermometer

• sphygmomanometer

• electrocardiogram (EKG)

Calculate the CO with the following: HR = 120 bpm SV = 140 mL/beats

• 18.8 L/min

• 28 L/min

• 16.8 L/min

• 12.8 L/min

Calculate the HR with the following:

CO = 5400 mL/min (5.4 L/min)

SV = 90 mL/beat

• 4.86 bpm

• 48.6 bpm

• 600 bpm

• 60 bpm

What is the definition of Stroke Volume?

• SV is the amount of blood that is pumped out of the heart per beat

• SV is the amount of blood that is pumped out of the heart when it tells you it is tired

• SV is the number of times the heart beats per minute

• SV is the amount of blood that is pumped out of the heart per minute

The volume of blood ejected each time a Ventricle contracts is known as?

• Heart Rate

• Stroke Volume

• Cardiac Output

These lower chambers of the heart pump blood out to the body through arteries:

• Ventricles

• Atrium

• Vena cava

• Aorta

Answer explanation

A patient with a rapid heart rate may have decreased cardiac output because....

• the heart muscles become agitated and pump an excessive amount of blood

• the heart muscles become tired and are unable to pump as much blood

• the ventricles are filled with too much blood, so stroke volume would increase

• the ventricles do not have enough time to refill with blood, so stroke volume decreases

Tags

NGSS.HS-LS1-3

What effect does bradycardia have on cardiac output?

• Bradycardia does not ever effect cardiac output

• A slow heart rate causes cardiac output to increase

• A slow heart rate causes cardiac output to decrease

• A fast heart rate causes cardiac output to decrease

Which instrument is used to measure blood pressure?

• Stethoscope

• Thermometer

• Sphygmomanometer

• Electrocardiogram (EKG)

Calculate the Cardiac Output (CO) with the following: Heart Rate (HR) = 120 bpm, Stroke Volume (SV) = 140 mL/beat.

• 18.8 L/min

• 28 L/min

• 16.8 L/min

• 12.8 L/min

Tags

NGSS.HS-LS1-3