After 10 days, a vertical incision was made into the rumen and a cannula inserted.
The arterial cannula was immediately inserted into the opened aorta and a single venous cannula was placed in the right atrium.
As arteriovenous ultrafiltration is done via the arterial cannula, this could be important if the arterial cannula placed in a small aorta is obstructive.
To the best of our knowledge, this cannula has the highest internal-external diameter ratio among the pediatric arterial cannulas presently available for use in neonates.
The 2.1 mm cannula is used for neonates.
The cannula was placed in the subretinal space, and 5 l of virus solution was injected at a rate of 1060 l0min.
Radiolabelled microspheres were injected directly into the cannula used for arterial return.
Malposition of the cannulas was demonstrated by ultrasound investigation (17.1 % for the venous and in 6% for the arterial cannula).
