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6 Questions

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Understanding Cardiac Output

Created by

@LustrousSerenity839

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Questions and Answers

What is the formula for calculating cardiac output?

CO = HR + SV

CO = HR - SV

CO = HR ÷ SV

CO = HR × SV (correct)

How is heart rate typically measured?

Liters per minute (L/min)

Beats per minute (bpm) (correct)

Milliliters per beat (ml/beat)

Beats per second (bps)

What is the influence of an increase in heart rate on cardiac output, assuming stroke volume remains constant?

An increase in heart rate leads to a variable effect on cardiac output

An increase in heart rate leads to a decrease in cardiac output

An increase in heart rate leads to an increase in cardiac output (correct)

An increase in heart rate has no effect on cardiac output

How is stroke volume usually expressed?

Milliliters per beat (ml/beat) Signup and view all the answers

What is the influence of an increase in stroke volume on cardiac output, assuming heart rate remains constant?

An increase in stroke volume results in an increase in cardiac output Signup and view all the answers

How is cardiac output expressed?

In liters per minute (L/min) Signup and view all the answers

Study Notes

Cardiac Output Formula

The formula for calculating cardiac output is: Cardiac Output (CO) = Heart Rate (HR) x Stroke Volume (SV)

Measuring Heart Rate

Heart rate is typically measured in beats per minute (bpm)

Effects of Heart Rate on Cardiac Output

An increase in heart rate, assuming stroke volume remains constant, increases cardiac output
This is because the heart pumps more times per minute, leading to increased blood flow

Expressing Stroke Volume

Stroke volume is usually expressed in milliliters (mL) per beat

Effects of Stroke Volume on Cardiac Output

An increase in stroke volume, assuming heart rate remains constant, increases cardiac output
This is because the heart pumps more blood per beat, leading to increased blood flow

Expressing Cardiac Output

Cardiac output is typically expressed in liters per minute (L/min)

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Description

Learn about cardiac output and its components, including the calculation and factors influencing it. Explore the relationship between heart rate and stroke volume in determining cardiac output.