According to recent electrophysiological discoveries, atrial fibrillation is triggered by ectopic beats which in most
cases originate in the pulmonary veins, in extensions of left atrial myocardium upon these veins, so called myocardial
sleeves. In the relevant literature it is stated that this anatomical structure was first described by Ferdinand
Raeuschel in 1836 in the publication “De arteriarum et venarum structura“. This publication appeared as
Raeuschel’s dissertation thesis at the faculty of medicine in Breslau (now Polish Wroclaw) at the department of physiology
under the leadership of Jan Ev. Purkyně. In the introduction, the author thanks his tutor for introducing him
into the problematic and for the continuous help, stating that all new discoveries in the dissertation should be ascribed
to Purkyně. Thus, the description of myocardial sleeves of pulmonary veins appears as a yet further priority of
the great Czech scientist.
myocardial sleeves, J. Ev. Purkyně, atrial fibrillation, priorities, pulmonary veins.