1. He tino waiariki a PTFE guidewire kia taea ai te whakaiti i te waku o te waea arahi.
2. He ahua J te pito o te waea arataki, he uaua te tango mai i te whatukuhu i muri i te koiora renal.
3. He tino uaua ki te pito o muri, no reira he pai mo nga taakuta ki te whakahaere i te pokanga koiora renal ki a ia ano.
4. pani PTFE hanga te pokanga maeneene.