There are quite a few cells and nodes in your heart’s conduction system, and each has its own cardiac conduction system function, including: Sinoatrial node: As mentioned before, the sinoatrial ...

Background: The sinoatrial node (SN) generates the heart rate (HR). Its spontaneous activity is regulated by a complex interplay between the modulation by the autonomic nervous system (ANS) and ...

Third-degree sinoatrial exit block occurs when no SA nodal action potentials are able to leave the SA node. No P waves are seen on the ECG. When a junctional escape ensues, the rhythm may be ...

Your heart’s job is to keep your pulse steady to pump blood throughout your body. Sometimes your heart rate is slower when you’re relaxing, and sometimes it’s faster when you’re exercising or stressed ...

Did you know that certain medications can cause symptom of 'Sinoatrial node dysfunction'. Find these drugs listed on the page and be warned of similar symptoms as possible side-effects.

Since hypoxia inhibits conduction & automaticity predominantly in tissues dependent on the slow (Ca-channel) current, sinus node (SN) function should be selectively depressed. The effects of ...

The research question addressed whether TYHX could positively influence SAN ion channel function, specifically targeting the sodium-calcium exchanger (INCX) and L-type calcium channel (ICaL) of the ...