9mm infusion set vs. 6mm infusion set/medtronic 522 pump

I have been on the 522 pump for approximately 7 mths. I like the pump but I have to be very dilligent in changing the infusion set, almost on a daily basis. If I dont do this my numbers will climb. I have the 9mm catheter (excuse my spelling). Medtronic reccomends using a 6mm cathether for all lean individuals, and a 9mm for everyone else. I dont think the 9mm size is cutting it for me. I put the infusion set in my back area, which is a very lean area, but i think it is getting clogged, hence having to change the infusion set after I day. Has anyone else experienced this. I like the pump but I never know if I am getting my insulin because of this. Would switching to a 6mm solve this problem. Any suggestions would be helpful.

Which insulin do you use? Apidra is supposedly causes less clogging compare to other insulins (Humalog or Novolog).
Marina

Is it getting kinked or clogged? Where are you putting the set? I thought the 6mm sets were for little kids

I started with the 9mm quicksets but found that the cannula would kink but not completely close the flow of insulin. Becuse of this I would get highs. I switched to the 6mm quicksets and ahve not had any issues. Give them a try.

I use the 6 mm quick-sets and the inserter tool. I ALWAYS change sets just before eating so I “quickly” pump a bolus thru the new set. I have never (3 years) had a problem with non-delivery. I DID have non-delivery issues when I changed the set without bolusing shortly thereafter.

By way of explanation, the 522 requires a non-delivery of 3 units before it alarms. So if your basal rate is low (mine averages 0.5 units per hour), it takes quite awhile for the pump to detect the non-delivery that may have been the result of a crimp or kink during set change.

Thank You all for your suggestions. Will have to give the 6mm sets a try and maybe try some sillouttes.