Supraventricular tachycardia vs sinus tachycardia

Supraventricular tachycardia also known as paroxysmal supraventricular trachycardia are abnormally fast heartbeats. It can comprise many forms of heart rhythm disturbance (cardiac arithmias) and originate above the ventricles. These arithmias may appear or disappear spontaneously with periods of normal frequency.

The normal heart rhythm originates in the sinus node, normally it should not exceed 100 beats per minute, since when it passes this value, we talk about sinus tachycardia. We can find sinus tachycardia normally when we do physical activity such as running or climbing stairs, but it can also be related to other diseases such as anemia, heart failure, respiratory failure, fever; It also usually occurs in certain mental states (fear).

between the two muscle layers is the myenteric or auerbach's plexus, which controls peristalsis. in the colon, the muscularis externa is much thicker because the feces are large and heavy, requiring more force to push along. the stomach has a third layer of muscularis externa: the inner oblique layer.