As medical education evolves, some traditional teaching methods often get forgotten. For generations, the Lewis ladder diagram (LLD) has helped students understand the mechanisms of cardiac arrhythmias and conduction disorders. Similarly, clinicians have used LLDs to communicate their proposed mechanisms to their colleagues and trainees. In this article, we revisit this technique of constructing the LLD and demonstrate this process by describing the mechanisms of various bigeminal rhythms.
Keywords: Lewis’ diagram; Wenckebach phenomenon; bigeminal rhythm; escape-capture bigeminy.
© 2019 Wiley Periodicals, Inc.