A spry 93-year-old patient had been complaining of increasing ... with high amplitude were detectable in the preclinical 12-lead ECG. Additionally, a first-degree AV block was present (P waves ...

Martin A. Alpert, MD, FCCP; Boyd E. Terry, MD; Charles R. Hamm, MD; T. Michael Fan, MD, PhD; Michael V. Cohen, MD; Clara V. Massey, MD; and Jack A. Painter, MD ...