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will be at or within 20 mg/dL above her low limit within 30 minutes and suspends
her insulin. Sarah has her Alert before low set to off so that she is not alerted
when this occurs.
Low Limit
20 mg/dL above Low Limit
70 mg/dL above Low Limit
30 min
STOP
An hour later, her SG values are 21 mg/dL above her low limit. Her pump
estimates her SG values will be 45 mg/dL above her low limit within 30 minutes.
Her pump automatically resumes her basal insulin delivery.
When the concert ends, Sarah sees that her pump automatically suspended and
resumed her insulin delivery and a potential low was avoided. She clears the
messages by selecting OK.
Example 2: Suspend before low, responsive, manually resume basal
Kate decides to meet her friends at the mall. While shopping, she gets a Suspend
before low alert. This indicates that her SG values are approaching the low limit
she has set. She clears the alert and sees that her insulin has been suspended. Kate
checks her BG to confirm. Based on her healthcare professional's recommendation,
Kate stops for a snack to help avoid hypoglycemia. Knowing the carbohydrate will
make her glucose rise, Kate manually resumes her basal insulin delivery by
selecting Suspended before low from the Home screen and choosing Resume
basal.
Kate knows that after she has manually resumed her basal insulin delivery, the
suspend functions will be unavailable for 30 minutes. However, she will be alerted
if she reaches her low limit.
190 Chapter 10