Flashcards
272- Cardiac Output
Cards in this deck (28)
- 1When is CO maintained by increased HR and increased SV?During the early stages of exercise.
- 2During the early stages of exercise, CO is maintained by what?Increased HR and increased SV
- 3When is CO maintained by increased HR only?During the late stages of exercise.
- 4During the late stages of exercise, CO is maintained by what?CO is maintained by increased HR
only (SV plateaus). - 5What is preferentially shortened with increased HR?Diastole is preferentially shortened with increased HR; less filling time leads to increased CO (eg, ventricular tachycardia).
- 6Diastole is preferentially shortened with what? What can this lead to?Diastole is preferentially shortened with increased HR; less filling time leads to increased CO (eg, ventricular tachycardia).
- 7Stroke volume (SV) x heart rate (HR) = ?CO
- 8What is the Fick principle?CO = (rate of O2 consumption)/
(arterial O2 content − venous O2 content) - 9How do you calculate the mean arterial pressure from the CO and TPR?Mean arterial pressure (MAP) = CO × total
peripheral resistance (TPR) - 10CO x TPR = ?Mean arterial pressure (MAP) = CO × total
peripheral resistance (TPR) - 11How do you calculate MAP from diastolic pressure and systolic pressure?MAP = 2 ⁄3 diastolic pressure + 1⁄3 systolic pressure
- 122 ⁄3 diastolic pressure + 1⁄3 systolic pressure = ?MAP
- 13Systolic pressure - diastolic pressure = ?Pulse pressure
- 14How do you calculate pulse pressure from systolic pressure and diastolic pressure?Pulse pressure = systolic pressure – diastolic pressure
- 15Pulse pressure is proportional to what? And inversely proportional to what?Pulse pressure is proportional to SV, inversely proportional to arterial compliance.
- 16How do you calculate SV from EDV and ESV?SV = end-diastolic volume (EDV) − end-systolic volume (ESV)
- 17End-diastolic volume (EDV) − end-systolic volume (ESV) = ?SV
- 18There is increased pulse pressure in what conditions?Increased pulse pressure in hyperthyroidism, aortic regurgitation, aortic stiffening (isolated systolic hypertension in elderly), obstructive sleep apnea (increased sympathetic tone), exercise (transient).
- 19There is decreased pulse pressure in what conditions?Decreased pulse pressure in aortic stenosis, cardiogenic shock, cardiac tamponade, advanced heart failure (HF).
- 20Increased pulse pressure or decreased pulse pressure? HyperthyroidismIncreased
- 21Increased pulse pressure or decreased pulse pressure? aortic regurgitationIncreased
- 22Increased pulse pressure or decreased pulse pressure? aortic stiffening (isolated systolic hypertension in elderly)Increased
- 23Increased pulse pressure or decreased pulse pressure? obstructive sleep apnea (increased sympathetic tone)Increased
- 24Increased pulse pressure or decreased pulse pressure? Exercise (transient)Increased
- 25Increased pulse pressure or decreased pulse pressure? Aortic stenosisDecreased
- 26Increased pulse pressure or decreased pulse pressure? cardiogenic shockDecreased
- 27Increased pulse pressure or decreased pulse pressure? Cardiac tamponadeDecreased
- 28Increased pulse pressure or decreased pulse pressure? Advanced heart failure (HF)Decreased
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- User has deleted their subject information Flashcards on 272- Cardiac Output, created by Deleted user on 30/05/2017.
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- Deleted user · May 2017
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- May 30, 2017
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- Created by Victoria Wright · May 29, 2017
- Copied by Victoria Wright · May 30, 2017
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