Causes of High Output Cardiac Failure 

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. High-output cardiac failure is a heart condition that occurs when cardiac output is higher than the normal due to an increase in peripheral demand.
Dr. Mobeen Syed addresses the conditions in which stroke volume increases.
For example, in hyperthyroidism, the excessive amount of thyroid hormones act on the heart and increase the heart's metabolic rate.
The excessive amount of thyroid hormones act on the tissues as well and increase the tissue's metabolic rate.
The excessive production of waste products causes vasodilation which reduces the resistance to the blood flow. The venous return increases and elevates the demand on the heart, to increase ejection fraction. It results in high output cardiac failure.
Another condition in which the stroke volume increases is dilation of the arterioles.
The total peripheral resistance decreases when the arterioles dilate. It causes an increase in the venous return and the cardiac output.
In wet beriberi, there is thiamine deficiency which causes a reduction in the ATP production. The decrease in ATP production causes vasodilatation and an increase in the venous return. The demand on the heart for increased ejection fraction results in high output cardiac failure.
The same mechanism causes high output cardiac failure disease in endotoxic shock.
AV fistula also leads to high output cardiac failure.
An arteriovenous (AV) fistula is an abnormal connection between an artery and a vein; the blood flows directly from Artery into Vein, bypassing some capillaries.
The knife wounds, the shunts for hemodialysis, and Paget's disease create an AV fistula that results in high output cardiac failure.
In severe anemic patients, the viscosity of the blood decreases that increases the velocity of blood flow. It can result in high output cardiac failure.
The following topics have discussed in the full video:
* Definition of high output cardiac failure
* Factors causing high output cardiac failure
* Factors that increase the stroke volume
* Factors that cause vasodilation
* Conditions that cause AV fistula formation
* Factors that reduce the viscosity of blood ...
Disclaimer:
This video is not intended to provide assessment, diagnosis, treatment, or medical advice; it also does not constitute provision of healthcare services. The content provided in this video is for informational and educational purposes only.
Please consult with a physician or healthcare professional regarding any medical or mental health related diagnosis or treatment. No information in this video should ever be considered as a substitute for advice from a healthcare professional. ...
Disclaimer:
This video is not intended to provide assessment, diagnosis, treatment, or medical advice; it also does not constitute provision of healthcare services. The content provided in this video is for informational and educational purposes only.
Please consult with a physician or healthcare professional regarding any medical or mental health related diagnosis or treatment. No information in this video should ever be considered as a substitute for advice from a healthcare professional.