What is vascular tone?

Vascular tone refers to the degree of constriction or dilation of blood vessels, which affects blood flow and blood pressure in the body. It is regulated by the autonomic nervous system and various hormones, such as epinephrine and norepinephrine, as well as local factors like oxygen levels, carbon dioxide levels, and pH.

Normal vascular tone is essential for maintaining proper blood flow to tissues and organs, as well as regulating blood pressure. Abnormalities in vascular tone, such as excessive vasoconstriction or vasodilation, can lead to various cardiovascular conditions, including hypertension, hemorrhage, and shock.

Factors that can influence vascular tone include stress, temperature, exercise, and certain medications. Lifestyle factors, such as diet and smoking, can also affect vascular tone. Maintaining a healthy lifestyle, including regular exercise and a balanced diet, can help support optimal vascular tone and overall cardiovascular health.