Difference between revisions of "CARDIAC OUTPUT (CO)"
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<br/>3. SV determined by: preload, contractility, after-load, HR. | <br/>3. SV determined by: preload, contractility, after-load, HR. | ||
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<br/>4. Preload determined by: venous return to the heart; venous return = systemic filling pressure | <br/>4. Preload determined by: venous return to the heart; venous return = systemic filling pressure: CVP. | ||
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<br/>5. Myocardial contractility determined by: <i>intrinsic factors </i>(cardiac sympathetic stimulation), <i>extrinsic factors </i>(circulating catecholamines). | <br/>5. Myocardial contractility determined by: <i>intrinsic factors </i>(cardiac sympathetic stimulation), <i>extrinsic factors </i>(circulating catecholamines). | ||
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==Reference(s)== | ==Reference(s)== | ||
Barrett, K.E., Barman, S.M | Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education | ||
[[Category:Cardiac Output (CO)]] | [[Category:Cardiac Output (CO)]] | ||
[[Category:Physiology]] | [[Category:Physiology]] | ||
Latest revision as of 02:30, 21 March 2023
SUMMARY
1. CO = Heart Rate (HR) x Stroke Volume (SV).
2. BP = CO x Systemic Vascular Resistance (SVR).
3. SV determined by: preload, contractility, after-load, HR.
4. Preload determined by: venous return to the heart; venous return = systemic filling pressure: CVP.
5. Myocardial contractility determined by: intrinsic factors (cardiac sympathetic stimulation), extrinsic factors (circulating catecholamines).
6. Afterload (ventricular wall tension that has to be generated in order to eject blood out of the ventricle, analogous to arterial pressure) determined by: SVR.
Reference(s)
Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education
