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"`In the past we..."
  • `In the past we had a light that flickered, in the present, a light that flames, and in the future we will have a light that shines over all the land and the sea’
  • Winston Churchill
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Pump Gasoline?
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Pump Iron?
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Pump Breast Milk?
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BANTING-1891-1941 & BEST-1899-1978
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First commercial insulin
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Prevalence of Diabetes in the US
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Good Glycemic Control (Lower HbA1c)
Reduces Incidence of Complications
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HbA1c and Microvascular Complications
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Every 1% HbA1c Increase Above Goal Elevates the Risk of Diabetic Complications
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Physiology of Insulin and blood glucose
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Insulin Preparations
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NPH and  regular insulin - 2 injections
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Disadvantages of NPH/ Regular regimen
  • No flexibility:
  • Required certain amount of calories a day
  • Skipped meal - hypoglycemia (peak of NPH)
  • Exercise - hypoglycemia (excessive glucose use)
  • At night - hypoglycemia (peak of NPH)
  • Overeating- hyperglycemia (not enough)
  • Oversleeping- hyperglycemia (skipped dose)


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Results of conventional therapy
  • Poor control - HbA1C 10% and higher
  • Fear of hypoglycemia - worsening of control
  • Inability to exercise - poor fitness
  • Early development of complications
  • “OUT OF CONTROL”-Negative reinforcement
  • “Don’t Do This, Don’t Do That”
  • Mauriac syndrome - chronic insulin deficiency - stunted growth, hepatomegaly



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"Some causes of hypoglycemia in..."
  • Some causes of hypoglycemia in toddlers and preschoolers:
    • Unpredictable food intake and physical activity.
    • Imprecise administration of low doses of insulin.
    • Frequent viral infections.
    • Inability to convey the symptoms of low blood sugar.
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"IN SEARCH OF THE HOLY..."
  • IN SEARCH OF THE HOLY GRAIL
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Humalog/Novolog versus Regular
  • Rapid acting insulins:               Start in 10min           Peak in 1-2h          Gone in 3.5-4h
  • Regular insulin:    Starts in 30min     Peaks in 3-4h       Gone in 6-8h
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Benefits of rapid acting insulins
  • May be given just prior to the meal or after meal in babies
  • Time of action match rise in sugar caused by most meals
  • No action left at the time of next meal - no boluses buildups
  • Less activity at bedtime - less night “low’s” and no need for bedtime snack
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New Long Acting Insulin (Glargine Insulin)
  • Lantus is a new type of long acting insulin that has no peaks
  • Mimics physiological insulin (basal)
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INSULIN TACTICS
The Basal/Bolus Insulin Concept
  • Basal Insulin
    • Insulin requirement to suppress hepatic glucose production between meals
  • Bolus Insulin (prandial)
    • Insulin requirement to maintain normal glucose disposal after eating
    • Insulin:CHO Ratio = 500/(total starting dose)
    • Correction Factor = 1500/(total starting dose)
    • Correction factor in young children = 1800/(total starting dose)


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LANTUS AND NOVOLOG-”POOR MANS PUMP”
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Nine Preschool Patients Meticulously Cared For With MDI Switched To CSII:
  • Mean A1c 9.5% reduced to 7.9%.
    • Severe hypoglycemic events 0.52 per month reduced to 0.09 per month.
    • Increased parental confidence and independence.
    • All refused to relinquish pump at completion of study.
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Better Control and Less Hypoglycemia in Young Children
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Glycemic Memory: Sustained Beneficial Effect Of Prior Intensive Therapy

  • 195 patients between the ages of 13 and 17 in DCCT:
    • Decreased worsening of retinopathy by 74% (p < 0.001).
    • Decreased progression to proliferative or severe
      non-proliferative retinopathy by 78% (p < 0.007).
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Glycemic Memory: Sustained Beneficial Effect Of Prior Intensive Therapy
  • 195 patients between the ages of 13 and 17 in DCCT:
    • Relative risk of hypoglycemia < 1 among prior intensive group.
    • Prevalence of microalbuminuria 48% less.

  • It is vital to achieve the best glycemic control early in the course in diabetes during adolescence and childhood.
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"“ Less than optimal glycemic..."
  • “ Less than optimal glycemic control during the early years of diabetes has a lasting detrimental effect on the development and progression of complications, even after better glycemic control is established later in the course of the disease.”
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From Preschool to Prom
  • 161 patients with type 1 diabetes:
    • 26 ages 1 to 6
    • 76 ages 7 to 11
    • 59 ages 12 to 18
  •      98% remained on CSII
  • Reduced hypoglycemia (events/year)
    • Age 1 to 6:  0.42 to 0.19
    • Age 7 to 11:  0.33 to 0.22
    • Age 12 to 18:  0.33 to 0.27

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World youngest pumper in 1999: 5mo old
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World youngest pumper 2003: 10 d old
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I WAS A NON-BELEIVER
  • TOO HARD/TIME CONSUMING
  • I WAS UNINFORMED ON HOW TO USE THEM
  • NOT FOR THE VERY YOUNG OR THE UNMOTIVATED
  • ONLY AFTER HONEYMOON
  • YOU HAVE TO TEST FOR ME TO PUT YOU ON PUMP
  • YOU WILL SUFFER PSYCHOLOGICALLY
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Introduction
  • Test the feasibility and efficacy of insulin pump therapy initiated within the first month of diagnosis
  • N=28 consecutive. mean age 12.1+ 6.2 years
  • Range of start 1-30 days
  • None discontinued after up to three year follow-up
  • 2 sites Cornell Medical Center and Maimonides Medical Center
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Hypothesis
  • Our hypothesis are:
    • Patients on pump have better control of their blood glucose level
    • Better control allows extension of the “honey moon” period
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Rationale and Hypothesis
  • Earlier aggressive glucose control leads to lower incidence of long-term complications
  • Insulin pump therapy resembles physiology more closely than multiple daily injections
  • Lower incidence of occult and overt serious and moderate hypoglycemia
  • Would there be benefit to introducing pump therapy earlier rather than waiting until further insulinopenia sets in?
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Demographics
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Mean HbA1c Levels Pre and Post Initiation
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HbA1c
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Insulin Burden (U/kg)
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C Peptide AUC-In response to MMTT (Boost)
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Other Significant Findings
  • BMI-No significant gains or losses in BMI SD over study time
  • All patients were “self-sufficient” within 3 months
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Conclusions
  • Starting patients on insulin pump therapy is a viable option at or soon after diagnosis
  • Further studies need to be performed to see if quality of life and long term complications are affected
  • Despite the labor intensivity of this approach the benefits were clear and patients opted to remain on pump therapy after treatment
  • Apparent prolongation of the honeymoon
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Candidates for pump therapy
  • Typical Criteria
  • Only motivated patients
  • only patients who showed good compliance on previous regimen
  • Adults and children > 6y old
  • My Criteria
  • Any patient who is willing to start and has abilities to learn
  • May improve compliance
  • Any age adults and children of any age (independent users 7-80 y old)
  • Particularly “non-compliant” patients
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ADVERSE EVENTS
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PSYCHOSOCIAL OUTCOMES
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The Yale Experience
  • > 200 children started on pumps over last 5 yrs







  • No difference in severe hypoglycemia
  • Parents report less mild hypoglycemia
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Additional Evidence From Yale
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CSII vs. MDI With Glargine in Children
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Pump Group Achieved Better Control Overall
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More Pump Wearers Achieved HbA1c    6.9%
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Sweden’s Experience
  • 89 children 3-21 y.o
  • Diabetes duration 6.1 years
  • 30% using CSII
  • HbA1c decreased from 9.2% to 8.4% after CSII start
  • Severe hypos
    • Pump: 11.1/100 pt years
    • MDI: 40.3/100 pt years
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Patient Characteristics of Successful Pediatric Pumpers
  • Able to maintain follow up appointments with health care provider
  • Willing to record blood glucose values
  • Able to count carbohydrates
  • Good family/social support system
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Pump therapy benefits
  • Improved control - more physiological basal rates (“dawn phenomenon” match), different boluses for food, less absorption variability
  • Less hypoglycemia
  • More flexible lifestyle and possibility to exercise
  • Precise dosing -  0.1u - 0.025u increments for basal rate and boluses
  • Less injections - improved quality of life
  • Less possibility of overdose
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Pump Use in Children Is Increasing
  • 200,000 users (adults and kids in the US). 10,000 are adults with type 2 diabetes
  • ~ 20,000 children using pump therapy
    • 10% of all children with diabetes
  • Penetration as high as 90% in some pediatric clinics (ours)
  • Increasing use in younger children (as young as 10 months)
  • Current outcomes indicate CSII is safe and effective in children
  • Increasing acceptance likely due to DCCT findings as well as the introduction of smaller, safer insulin pumps
  • There are approximately 400,000 insulin pump users worldwide
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Avoiding DKA
  • Give a pen with the pump
  • Instruct that any time the patient feels nauseated or has abdominal pain -- change the site
  • Blood sugar is greater than 250 mg/dl
    • Take correction dose
    • Check for ketones
    • Recheck in 60 minutes
      • If coming down, leave alone
      • If not, take a shot and change the site
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Summary
  • Pump therapy is an intensive process for pediatric patients and their families and the diabetes education team.
  • Successful pumpers are motivated and willing to maintain follow-up, carbohydrate count, and check blood glucose frequently.
  • Benefits of pump therapy for pediatric patients include:  improved lifestyle, decrease in hypoglycemia, accurate dosing , ability to review history to see if doses were actually given.


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Summary
  • Children with diabetes should be intensively treated to avoid short and long term complications
  • Insulin pumps can provide better control and less hypoglycemia than MDI
  • With good support and a standardized process, insulin pump therapy can help to improve diabetes management in children
  • Insulin pump therapy should be the only form of therapy offered to children with diabetes
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When meditating over a disease, I never think of finding a remedy for it, but rather, a means of preventing it.

Louis Pasteur, 1884
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