Cardiovascular- Cardiac Output

Which equation represents cardiac output?

• CO = BR x SV

• CO = SV x HR

• CO = SV x BR

• CO = SV + HR

Stroke volume is defined as...

• end diastolic volume

  minus

  end systolic volume

  of the atria

• end diastolic volume

  minus

  end systolic volume

  of the ventricles

• end systolic volume

  minus

  end diastolic volume

  of the ventricles

• isovolumetric contractions

Identify the 3 main factors that affect stroke volume.

• contractility

• preload

• heart rate

• afterload

_____ is described as the backpressure by arterial blood.

If a patient is taking calcium channel blockers, what does that do to their stroke volume?

• increases stroke volume

• decreases stroke volume

• nothing, it will stay the same

If preload increases, what does that do to the cardiac output (if the heart rates stays the same)?

• increases cardiac output

• decreases cardiac output

• nothing

  stays the same

Tags

NGSS.HS-LS1-3

Stroke volume represents.....

• How much blood the ventricles pump out.

• How fast the ventricles pump blood out.

• Cardiac output.

• Heart rate

What will increase afterload?

• Calcium ions

• exercise

• blood loss

• vascular resistance

If afterload increases, what does it do to the cardiac output (if heart rate stays the same)?

• Increases cardiac output

• Decreases cardiac output

• Nothing

  stays the same

______ is the resistance to flow that must be overcome for the blood to flow through the circulatory system.

• Vascular resistance

• Afterload

• Preload

• Venous pressure