Cardiac electro-mechanics

A - Human Necessities – 61 – B

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A61B 5/042 (2006.01) A61N 1/365 (2006.01)

Patent

CA 2242360

A method of constructing a cardiac map of a heart having a heart cycle including bringing an invasive probe into contact with a location on a wall of the heart; determining, at at least two different phases of the heart cycle, a position of the invasive probe; and determining a local non-electrical physiological value at the location. The method is repeated for a plurality of locations in the heart. The positions are combined to form a time-dependent map of at least a portion of the heart and local relationships between changes in positions of the invasive probe and determined local non--electrical physiological values are determined. Preferably, local electrical activity at the plurality of locations is also acquired.

Méthode d'élaboration d'une cartographie cardiaque pour un coeur présentant un cycle. La méthode consiste à introduire une sonde invasive au contact d'un site d'une paroi du coeur; à déterminer, au moins en deux phases différentes du cycle cardiaque, une position de la sonde invasive; et à déterminer une valeur physiologique non électrique et locale sur ce site. L'opération est répétée en plusieurs sites du coeur. Les positions sont combinées pour obtenir une cartographie temporelle d'au moins une partie du coeur et les relations locales entre les changements des positions de la sonde invasive ainsi que les valeurs physiologiques non électriques locales. De préférence, l'activité électrique locale en plusieurs sites est elle aussi enregistrée.

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