Louis Nelson Katz (1897-1973) was an American cardiologist. Katz is eponymously associated with Katz-Wachtel phenomenon (1937)
A brief history of the ECG and electrocardiography and the eponymous names behind the ECG/EKG...
Katz-Wachtel phenomenon: Large biphasic QRS complexes (tall R waves + deep S waves) in V2-5. First described by Louis Nelson Katz in 1937
A review of the ECG features of biventricular hypertrophy (BVH) with LVH and RVH or the Katz-Wachtel phenomenon LITFL ECG Library