Signs that cardiac collateral circulation has been established are mainly characterized by a decrease in the frequency and intensity of angina attacks, which ultimately need to be clarified by auxiliary tests.
If collateral circulation has been established, the frequency of angina attacks gradually decreases, and the degree of pain in the precordial area also gradually decreases. If the duration or distance of walking increases and angina attacks do not recur, the likelihood that collateral circulation has been established increases.
The establishment of collateral circulation is also clarified by auxiliary examinations, including coronary angiography, coronary artery CT, cardiac MRI, and so on. The establishment of cardiac collateral circulation mainly includes vasodilatation and remodeling, vascular thickening, and neovascularization.
Definition of cardiogenic disease requires rational treatment under the guidance of a doctor.