John Hay (1873-1959) English physician first to record second degree atrioventricular (AV) block now better known as Mobitz type II AV block
Luigi Luciani (1840 – 1919) was an Italian neuroscientist. discovery referring to the phenomena as ‘Luciani periods‘ (Wenckebach AV block)
Luigi Galvani (1737 - 1798) Italian obstetrician, surgeon and anatomist. Discovered the physiological action of electricity and demonstrated the existence of natural electric current in animal tissue - "the electrical forces in muscular movements" or the 'animal electricity'
Alfred Lewis Galabin (1843-1913) English obstetric physician. Using an apexcardiogram he was documented atrioventricular (AV) block in humans.
Walter Holbrook Gaskell (1847-1914) was a British physiologist central to our current understanding of cardiac physiology
Carl Friedrich Wilhelm Ludwig (1816-1895) German physician and physiologist. Designed advanced experimental laboratory, spawned many eponyms
Woldemar Mobitz (1889-1951) was a Russian-German physician. Applied mathematical approach to arrhythmias 1924 Mobitz Type I and II AV Block