Sinoatrial block
Encyclopedia
A sinoatrial block is a disease which involves an impairment of conduction at the sinoatrial node
. An absent P wave (electrocardiography)
on an ECG can indicate sinoatrial block.
It is possible to use the "Wenckebach" distinction to identifying increasing delays, as is done with second degree AV block.
Sinoatrial node
The sinoatrial node is the impulse-generating tissue located in the right atrium of the heart, and thus the generator of normal sinus rhythm. It is a group of cells positioned on the wall of the right atrium, near the entrance of the superior vena cava...
. An absent P wave (electrocardiography)
P wave (electrocardiography)
In electrocardiography, during normal atrial depolarization, the main electrical vector is directed from the SA node towards the AV node, and spreads from the right atrium to the left atrium...
on an ECG can indicate sinoatrial block.
It is possible to use the "Wenckebach" distinction to identifying increasing delays, as is done with second degree AV block.