Hypoglycemia begets hypoglycemia : the order effect in the ASPIRE in-clinic study
BACKGROUND: The ASPIRE in-clinic study established that automatic suspension of insulin with the threshold suspend (TS) feature reduces the duration of induced hypoglycemia. The study's crossover design allowed the effects of antecedent hypoglycemia to be studied.
SUBJECTS AND METHODS: The study enrolled 50 subjects who exercised until plasma glucose (YSI glucose and lactate analyzer; YSI, Inc., Yellow Springs, OH) reached ≤85 mg/dL. Hypoglycemia was evaluated after the YSI value reached <70 mg/dL. In TS experiments, insulin was stopped for 2 h once a sensor glucose (SG) value of ≤70 mg/dL was detected; in control experiments, basal insulin delivery continued. Subjects were randomly assigned to Group A (TS in Period 1; control in Period 2) or Group B (control in Period 1; TS in Period 2). Experiments were separated by 3-10 days.
RESULTS: Hypoglycemia was 63.7 min shorter in Period 1 TS experiments (no preceding control experiment) than in Period 2 TS experiments (one or more preceding control experiment(s)) (P<0.01). The number of experiments prior to a successful TS experiment was lower for Period 1 than for Period 2 (0.36 ± 0.64 vs. 1.57 ± 0.84; P<0.001), as was the cumulative duration of antecedent hypoglycemia (16.6 min vs. 204.6 min; P<0.001). The between-groups difference in hypoglycemia duration was not attributable to differences in SG rates of change, the duration of exercise, or area under the curve of <70 mg/dL × min in the 2 days before the successful experiment (all P>0.3).
CONCLUSIONS: The TS feature's ability to mitigate hypoglycemia was decreased by an episode or episodes of prolonged antecedent hypoglycemia, suggesting hypoglycemia begets hypoglycemia. The effect of antecedent hypoglycemia should be taken into consideration in the design of future experiments assessing strategies to reduce hypoglycemia.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2014 |
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| Erschienen: |
2014 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:16 |
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| Enthalten in: |
Diabetes technology & therapeutics - 16(2014), 3 vom: 30. März, Seite 125-30 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Garg, Satish K [VerfasserIn] |
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| Links: |
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| Themen: |
Blood Glucose |
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| Anmerkungen: |
Date Completed 28.11.2014 Date Revised 07.12.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1089/dia.2013.0219 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 100 | 1 | |a Garg, Satish K |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Hypoglycemia begets hypoglycemia |b the order effect in the ASPIRE in-clinic study |
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| 500 | |a published: Print-Electronic | ||
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| 520 | |a BACKGROUND: The ASPIRE in-clinic study established that automatic suspension of insulin with the threshold suspend (TS) feature reduces the duration of induced hypoglycemia. The study's crossover design allowed the effects of antecedent hypoglycemia to be studied | ||
| 520 | |a SUBJECTS AND METHODS: The study enrolled 50 subjects who exercised until plasma glucose (YSI glucose and lactate analyzer; YSI, Inc., Yellow Springs, OH) reached ≤85 mg/dL. Hypoglycemia was evaluated after the YSI value reached <70 mg/dL. In TS experiments, insulin was stopped for 2 h once a sensor glucose (SG) value of ≤70 mg/dL was detected; in control experiments, basal insulin delivery continued. Subjects were randomly assigned to Group A (TS in Period 1; control in Period 2) or Group B (control in Period 1; TS in Period 2). Experiments were separated by 3-10 days | ||
| 520 | |a RESULTS: Hypoglycemia was 63.7 min shorter in Period 1 TS experiments (no preceding control experiment) than in Period 2 TS experiments (one or more preceding control experiment(s)) (P<0.01). The number of experiments prior to a successful TS experiment was lower for Period 1 than for Period 2 (0.36 ± 0.64 vs. 1.57 ± 0.84; P<0.001), as was the cumulative duration of antecedent hypoglycemia (16.6 min vs. 204.6 min; P<0.001). The between-groups difference in hypoglycemia duration was not attributable to differences in SG rates of change, the duration of exercise, or area under the curve of <70 mg/dL × min in the 2 days before the successful experiment (all P>0.3) | ||
| 520 | |a CONCLUSIONS: The TS feature's ability to mitigate hypoglycemia was decreased by an episode or episodes of prolonged antecedent hypoglycemia, suggesting hypoglycemia begets hypoglycemia. The effect of antecedent hypoglycemia should be taken into consideration in the design of future experiments assessing strategies to reduce hypoglycemia | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Randomized Controlled Trial | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a Blood Glucose |2 NLM | |
| 650 | 7 | |a Glycated Hemoglobin A |2 NLM | |
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| 650 | 7 | |a Insulin |2 NLM | |
| 650 | 7 | |a hemoglobin A1c protein, human |2 NLM | |
| 700 | 1 | |a Brazg, Ronald L |e verfasserin |4 aut | |
| 700 | 1 | |a Bailey, Timothy S |e verfasserin |4 aut | |
| 700 | 1 | |a Buckingham, Bruce A |e verfasserin |4 aut | |
| 700 | 1 | |a Slover, Robert H |e verfasserin |4 aut | |
| 700 | 1 | |a Klonoff, David C |e verfasserin |4 aut | |
| 700 | 1 | |a Shin, John |e verfasserin |4 aut | |
| 700 | 1 | |a Welsh, John B |e verfasserin |4 aut | |
| 700 | 1 | |a Kaufman, Francine R |e verfasserin |4 aut | |
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