It is true that aerobic endurance is good cardiovascular efficiency.
The type of indwelling catheter that is most commonly used in the peripheral veins of dogs is the PERIPHERAL INDWELLING INTRAVENOUS CATHETER. They are usually placed in the cephalic vein in the fore limbs of dogs. These types of catheter can be left in place for days.
An advantage of the syringe method is that blood appears in the hub when the vein has been entered.