What is atrial focus Is it the same as atrial escape?

An atrial focus refers to an ectopic pacemaker located in the atria that can initiate impulses independently of the sinoatrial (SA) node, leading to atrial contractions. It is not the same as atrial escape, which occurs when the SA node fails to generate impulses, allowing an ectopic atrial focus to take over the pacing of the heart. While both involve ectopic activity in the atria, atrial escape specifically pertains to a backup mechanism due to SA node dysfunction.