sinoatrial

Damage to the sinoatrial node can result in a slower heart rate.

A third degree sinoatrial block looks very similar to a sinus arrest.

It also supplies the sinoatrial nodal artery in 38% of people.

The cardiac pacemaker cells of the sinoatrial node in the heart provide a good example.

These cells form an ovoid called sinoatrial node, on the left venous valve.

The sinoatrial, or SA, node is located in the right atrium.

It causes tachycardia by blocking vagal effects on the sinoatrial node.

Second-degree Sinoatrial block and nodal rhythm were described.

Because the sinoatrial node is responsible for the rest of the heart's electrical activity, it is sometimes called the primary pacemaker.

But this pacemaker activity is actually made by a group of cells that derive from the sinoatrial right venous sinus.

Sinoatrial blocks are typically well tolerated.

The electrical origin of atrial Purkinje fibers arrives from the sinoatrial node.

When this is a problem, an operation is often performed to install an artificial pacemaker, which takes over the role of the sinoatrial node.

This cluster is called the sinoatrial node, or SA node.

Ordered sinoatrial control of atrial electrical activity is lost, as a result coordinated pressure generation does not occur in the upper cardiac chambers.

Its negative chronotropic effect results in a modest lowering of heart rate, due to slowing of the sinoatrial node.

Since the premature beat initiates outside the sinoatrial node, the associated P wave appears different from those seen in normal sinus rhythm.

If a pacemaker other than the sinoatrial node is pacing the heart, this condition is known as an escape rhythm.

The right vagus innervates the sinoatrial node.

Systole of the heart is initiated by the electrically excitable cells of the sinoatrial node.

The clinical relevance pertaining to AV blocks is greater than that of sinoatrial blocks.

A specialized portion of the heart, called the sinoatrial node, is responsible for atrial propagation of this potential.

The electrical activity of sinus rhythm originates in the sinoatrial node and depolarizes the atria.

The electrical signal starts in a group of cells at the top of your heart called the sinoatrial (SA) node.

Normally, the heartbeat starts in the right atrium in a group of special heart cells called the sinoatrial (or sinus) node.