The historical period called the Middle Ages, a long interval between the
5th and the 15th centuries, is still commonly known as
the Dark Ages, especially in the area of health sciences. In the last decades,
this "classic" view of the Middle Ages has been gradually modified with advances
in historiographical studies and the history of science. During that period in
Western Europe, knowledge about the human body suffered a regression in terms of
anatomy and physiology, with the predominance of religious conceptions mainly
about diseases and their treatments. Knowledge on the cardiovascular system and
heart diseases has been classically described as a repetition of the concepts
developed by Galen from the dissection of animals and his keen sense of
observation. However, the Middle East, especially Persia, was the birth place of
a lot of intellectuals who preserved the ancient knowledge of the Greeks while
building new knowledge and practices, especially from the 8th to the
13th century. The invasion of the Arabs in North of Africa and
the Iberian Peninsula and the eclosion of the Crusades resulted in a greater
contact between the East and the West, which in turn brought on the arrival of
the Arab medical knowledge, among others, to 12th century Europe.
Such fact contributed to an extremely important change in the scientific medical
knowledge in the West, leading to the incorporation of different concepts and
practices in the field of cardiovascular Medicine. The new way of teaching and
practicing Medicine of the great Arab doctors, together with the teaching
hospitals and foundations in the Koran, transformed the Medicine practiced in
Europe definitely. The objective of this paper is to describe the knowledge
drawn up from the Middle Ages about the cardiovascular system, its understanding
and therapeutic approach to cardiologists and cardiovascular surgeons.