Saturday, June 11, 2016

Hyperthyroidism and hyperdynamic circulation


Hyperthyroidism results in a hyperdynamic circulation. This post was created because I attempted to know why :D

The cardiac effects of hyperthyroidism commonly cause increased preload with low systemic vascular resistance, a high heart rate, high cardiac output and increased cardiac muscle oxygen consumption. So that's why, hyperdynamic circulation!

Thyroid hormone has a consistent positive chronotropic effect, and resting sinus tachycardia is the most common cardiovascular sign of human hyperthyroidism.

Because thyroid hormone results in increased responsiveness to catecholamines.

Why does hyperthyroidism cause reduction in SVR?
The reduction in peripheral vascular resistance is thought to be mediated by decreased responses to contractile stimuli mediated by alpha adrenergic receptors and enhanced responsiveness to beta adrenergic receptor mediated dilatation.

That's all!



No comments:

Post a Comment

This is express yourself space. Where you type create something beautiful! <3
Wondering what do I write? Well...
Tell us something you know better. You are a brilliant mind. Yes, you are! ^__^
Ask about something you don't understand @_@?
Compliment... Say something nice! =D
Be a good critic and correct us if something went wrong :|
Go ahead. Comment all you like here! (:

PS: We have moderated comments to reduce spam. ALL comments that are not spam will be published on the website.