inspiring canadians to live better.

healthing leaf

inspiring canadians to live better.

healthing leaf
get healthing in your inbox with the morning checkup and weekender newsletter!

top of the page

normal sinus rhythm

the normal sinus rhythm is the rhythm and rate of impulses generated by certain muscle cells as a signal to the upper heart chambers (atria) to contract.

the heart contains a cluster of specialized muscle cells that act as the heart's natural pacemaker. this cluster is called the sinoatrial node, or sa node. the sa node generates the electrical signals that cause the upper heart chambers (atria) to contract. at rest, an adult's sa node normally sends about 60 to 100 impulses per minute.

this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use. learn how we develop our content.

this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

advertisement