Dee, have you read the other threads on this site? They contain useful information for you. For example, this was posted this morning:
The link below helped me very much.
My email friend gave me the tips listed below. Some of them are also in the thread posted above.
1.) Enter BG’s only when less than 10 points from meter reading.
2.) Wait at least 6 hours after putting new sensor and transmitter in place before starting up.
3.) Start up when the meter BG’s are good and near the center of your range. Also start when you are not stressed or going to experience a lot of physical activity.
4,) Place sensors in the center region of your abdomen, but not too close to your navel. Do not place a sensor where you might sleep on it .
5.) Keep the receiver out of the bath room when there is a lot of dampness present.
6.) The transmitter may have popped out of place when the numbers are crazy. If so, pop it back into place.
We have been advised not to place sensors on body parts where there is scar tissue present. I have permanent scar tissue on my upper ab from 61 years of injections. I use my lower ab for sensors.
My email friend also says not to use tape over the sensor tape to hold it in place. She thinks moisture will collect if you do that. (I am not sure about this one. The manual shows four strips of tape being used. I use two.)
She says to not push the sensor beyond seven days. (I am not sure about that one either. Several members here are getting good results after 7 days.)
I had my second sensor fail after only two days. I noticed that I had placed the sensor at a level where my belt was pressing tight against one edge of it. That may have bothered the sensor or transmitter, or both of them and the failure occurred. My infusion set is not bothered by pressure like that but the transmitter/sensor combo certainly seems to be.
I have been advised to not enter BG’s except when the Dexcom calls for them. I do occasionally enter an extra one when I am 15-20 points above/below my meter reading. I think this helps more than it hurts, at least in my case. I try not to enter an extra number more than once each 24 hours.
I am using my fourth sensor since I started in the first few days of January. I have been within 10 poiints of my meter at least 80% of the time. That is very satisfactory, in my opinion.