<unk> s are typically well tolerated. They are not as serious as an AV block and most often do not require treatment. In some people, they can cause fainting, altered mental status, chest pain, hypoperfusion, and signs of shock. They can also lead to cessation of the SA node and more serious dysrhythmias.
Sinoatrial block
Left bundle branch block
Right bundle branch block
Bundle branch block
Sinoatrial arrest
Atrioventricular block
Ectopic beat
Pre-excitation syndrome