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Putting Pump Policies Into Practice- Case Study Conference Call. Elizabeth Blair, ANP-BC,CDE Joyce Lekarcyk, RN, CDE. Objectives:. Able to assess probable causes of hypoglycemia and hyperglycemia Able to interpret data to make changes in pump settings
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Putting Pump Policies Into Practice- Case Study Conference Call Elizabeth Blair, ANP-BC,CDE Joyce Lekarcyk, RN, CDE
Objectives: • Able to assess probable causes of hypoglycemia and hyperglycemia • Able to interpret data to make changes in pump settings • Able to identify other technologies available to determine insulin adjustment
Assessment Tools • Assessment should include evaluating the following: • Total daily dose- % of basal vs. bolus • Evaluating I:C ratio and sensitivity factor • Evaluating basals rates • Trouble shooting, insertion sites, insulin usage, technique • Glucose records can be used to determine whether the cause of hyperglycemia or hypoglycemia is related to basal vs. bolus
Probable causes of hypoglycemia: Bolus Timing of bolus Stacking Carb counting vs. estimating Food choices Alcohol Activity New sites Basal rate Probable causes of hyperglycemia: Bolus Timing of bolus Grazing Carb counting vs. estimating Food choices Alcohol Activity Set change Basal rate Technique vs. compliance Basal vs. Bolus- Tips to decide When and why does it happen?
Case Study John O • John has had Type 1 diabetes for 30 years • The last 5 years he has been using a Medtronic insulin Pump 522 • Three vessel CABG 9 years ago Hypoglycemic unawareness • TDD: Basal: 14.6 Bolus: 27 to 36 units • A1c 7.3%
Pump Settings • Pump settings: 1:5 ratio SF: 30 Target glucose: 95 • Basal 12a - 0.1 3a - 0.6 5a – 1.0 6a - 0.8 12p - 0.45 8p - 1.0 10p - 0.4
Your answers Why?
Your answers • Which pump settings should you question? • IC ratio and SF • Target glucose • Basal rates • all of the above
Your answers • What pump setting would you change first? • Recalculate basal rate based on TDD • Recalculate IC ratio and SF • Wait for more trends • Change glucose target • All except for c
Tools to use Recalculating IC ratios and SF • IC ratio- TDD divided by 450 • Sensitivity factor: TDD divided by 1500 Any other way to change ratios?
Adjusting Bolus Rates per Policy PC-142 • If BG is > than target for 2 days at the same time: increase the IC ratio: • Example: Change 1:15 to 1:12 • If BS is < than for les than target for 2 days at the same time: decrease the IC ratio: • Example: Change 1:15 to 1:18
Possible basal: Average TDD=49 X .50 = 24.5 divided by 24=1.0 per hour 1500 divided by 49 =SF of 30 450 divided by 49 =IC ratio of 9 Compared to current basal: 14.7 units per day IC ratio of 1:5 Sensitivity factor of 30 Recalculate basal based on TDD
Initial changes: I:C Ratio 10-10-9 SF: 40 Target:120 Basal: 12- 0.4 3- 0.6 5- 1.0 6- 0.75 11-0.8 6p-1.0 10p-0.4 Current rates: 1:5 ratio SF: 30 Target glucose: 95 Basal 12a - 0.1 3a - 0.6 5a – 1.0 6a - 0.8 12p - 0.45 8p - 1.0 10p - 0.4 First priority - Prevent the low’s
BG records can only tell you so much! Is there a better way?
Basal rate change After reviewing overnight Basal results would you: • Increase the basal rate by 0.1 at 5am • Make no change • Consider changing supper IC ratio • Increase basal from 10 to 2 by 0.1
Morning basal evaluation • What changes would you make after reviewing the morning basal evaluations results? • Make no changes and repeat the fast • Increase the basal by 0.1 at 8am • Ask about activity • A and C
Lunch basal evaluation • What changes would you make after reviewing the lunch basal evaluation results? • Make no changes • Increase the basal rate by 0.1 at noon • Increase the basal rate by 0.1 at 2pm • Increase the basal rate by 0.2 at 2pm
Your intervention • In order to prevent the glucose spike after lunch what would you do first? • Ask if his meals have change • Nothing-wait for more trends • Suggest doing a lunch bolus evaluation • a and c
“I had a cortisone shot and my sugars are high” John gave his glucose by phone • 24 hours glucose readings ranged from 200 to 350 mg/dl • Infusion set and insulin were changed • Ketones-small
Your intervention • What Sick Day Management Guidelines would you give? • 50% increase in basal rate for 4 hours • 10% of total daily dose via pump • 20% of total daily dose via syringe • Either a or b
Lunch bolus evaluation John ate 30 gms of carbohydrates: • Glucose before lunch was 100 • Glucose 3 hours later was 200
Your intervention • What pump setting change would you make? • Change I:C to 9 from 10 • Inquire about activity and what he ate • a and b • Increase basal 0.1 at 1 pm
Pumping is less challenging to patients when there is a team approach and plenty of follow-up! Any questions? Patient Stay tuned to submit a final evaluation of this presentation !