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For dogs use a 1-1.5 inch x 21-25 g needle; |
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For cats use a 1 inch x 21-25 g needle. |
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Attach a 5-20 ml syringe. |
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If the bladder is full it can often be palpated and the needle
directed into the bladder transabdominally with the animal either standing
or lying. If the bladder is less obviously palpable the animal may be placed
in dorsal recumbency and the needle introduced through the midline (bitches
and cats) or just lateral to the penis in dogs.
The bladder is palpated and immobilised against the ventral abdominal wall
with the left hand, and the needle is gently introduced through the abdominal
wall with the right hand. In bitches, the needle point should be directed
caudodorsally from a point midway between the umbilicus and the vulva towards
the base of the tail. In the dog the direction of the needle is similar
but it is passed through the abdominal wall just lateral to the os penis. |
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If no urine is obtained on the first attempt, 1 or 2 more
attempts should be made, before postponing the procedure until the bladder
has filled a little more. After collection, urine is expelled from the syringe
into a sterile container. |
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