Abstract
Six dogs received the atrial cannulations, 3 in right and 3 in left. Putting to death 10 to 14 days after operation, the lung, kidney and atria were examined macro and microscopically. Finding of these sepcimen showed no thromboembolisms nor infectious glannulations. Inner part of the cannula was filled with clots. In conclusion, atrial cannulae can be left within atria for 10 to 14 days without the risk of thromboembolism or infection untill the patient's hemodynamics are stabilized. With carefull technique, the cannulae can be removed without the clots letting fall into the atria.
