What impact can emotional stress have on sinus rhythm?

Emotional stress is known to have a profound effect on the cardiovascular system, particularly influencing heart rate. When a person experiences emotional stress, the body responds by activating the sympathetic nervous system, which is part of the 'fight or flight' response. This activation leads to the release of stress hormones such as adrenaline (epinephrine) that increase heart rate to prepare the body for a rapid response.

Consequently, during periods of heightened emotional stress, individuals often experience an increased heart rate, also known as tachycardia. This physiological response is a natural mechanism that allows the body to cope with stressors, enhancing blood flow and oxygen delivery to vital organs and muscles. Therefore, the impact of emotional stress on sinus rhythm manifests as an increase in heart rate, aligning with the knowledge of how stress affects cardiovascular function.