Final answer:
The practice of inserting access needles into the same confined area repeatedly is known as needle cannulation, which is crucial in procedures like hemodialysis. Medical professionals use techniques to prevent complications associated with this practice.
Step-by-step explanation:
Placing the access needles into the same confined area time after time is also known as needle cannulation. This technique is often used in procedures like hemodialysis, where repeated access to the blood vessels is necessary. Proper needle cannulation is crucial to avoid complications such as hematoma, aneurysm formation, or damage to the blood vessels. To mitigate the risks, medical professionals are trained to rotate the sites of needle insertion or use a technique called the rope-ladder technique where the needle insertion sites are alternated along the access vein to prevent the complications associated with repeated punctures in the same location.