1
|
Kwon HJ, Trawley S, Vogrin S, Alipoor AM, Colman PG, Fourlanos S, Grills CA, Lee MH, MacIsaac RJ, O'Neal DN, O'Regan NA, Sundararajan V, Ward GM, McAuley SA. Driving-Related Glucose Patterns Among Older Adults with Type 1 Diabetes. Diabetes Technol Ther 2024; 26:335-340. [PMID: 38315502 DOI: 10.1089/dia.2023.0416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Older adults with type 1 diabetes may face challenges driving safely. Glucose "above-5-to-drive" is often recommended for insulin-treated diabetes to minimize hypoglycemia while driving. However, the effectiveness of this recommendation among older adults has not been evaluated. Older drivers with type 1 diabetes were assessed while using sensor-augmented insulin pumps during a 2-week clinical trial run-in. Twenty-three drivers (median age 69 years [interquartile range; IQR 65-72]; diabetes duration 37 years [20-45]) undertook 618 trips (duration 10 min [5-21]). Most trips (n = 535; 87%) were <30 min duration; 9 trips (1.5%) exceeded 90 min and 3 trips (0.5%) exceeded 120 min. Pre-trip continuous glucose monitoring (CGM) was >5.0 mmol/L for 577 trips (93%) and none of these had CGM <3.9 mmol/L during driving (including 8 trips >90 min and 3 trips >120 min). During 41 trips with pre-trip CGM ≤5.0 mmol/L, 11 trips had CGM <3.9 mmol/L. Seventy-one CGM alerts occurred during 60 trips (10%), of which 54 of 71 alerts (76%) were unrelated to hypoglycemia. Our findings support a glucose "above-5-to-drive" recommendation to avoid CGM-detected hypoglycemia among older drivers, including for prolonged drives, and highlight the importance of active CGM low-glucose alerts to prevent hypoglycemia during driving. Driving-related CGM usability and alert functionality warrant investigation. Clinical trial ACTRN1261900515190.
Collapse
Affiliation(s)
- Hye Jin Kwon
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Steven Trawley
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Psychology, The Cairnmillar Institute, Melbourne, Australia
| | - Sara Vogrin
- Department of Medicine, The University of Melbourne, Melbourne, Australia
| | - Andisheh Mohammad Alipoor
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Peter G Colman
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, Australia
| | - Spiros Fourlanos
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, Australia
- Australian Centre for Accelerating Diabetes Innovations, The University of Melbourne, Melbourne, Australia
| | - Charlotte A Grills
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Melissa H Lee
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Richard J MacIsaac
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
- Australian Centre for Accelerating Diabetes Innovations, The University of Melbourne, Melbourne, Australia
| | - David N O'Neal
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
- Australian Centre for Accelerating Diabetes Innovations, The University of Melbourne, Melbourne, Australia
| | - Niamh A O'Regan
- Department of Geriatric Medicine, Waterford Integrated Care for Older People, University Hospital Waterford, Waterford, Ireland
| | - Vijaya Sundararajan
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Public Health, La Trobe University, Melbourne, Australia
| | - Glenn M Ward
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Sybil A McAuley
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
- Department of Psychology, The Cairnmillar Institute, Melbourne, Australia
- Department of Endocrinology and Diabetes, The Alfred, Melbourne, Australia
| |
Collapse
|
2
|
Trawley S, Ward GM, Vogrin S, Colman PG, Fourlanos S, Grills CA, Lee MH, MacIsaac RJ, Alipoor AM, O'Neal DN, O'Regan NA, Sundararajan V, McAuley SA. Glucose profiles of older adults with type 1 diabetes using sensor-augmented pump therapy in Australia: pre-randomisation results from the ORACL study. Lancet Healthy Longev 2022; 3:e839-e848. [PMID: 36410370 DOI: 10.1016/s2666-7568(22)00266-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/27/2022] [Accepted: 10/27/2022] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Older adults with type 1 diabetes are recommended modified glucose targets. However, data on the effects of diabetes technology in older age are scarce. We assessed older adults established on sensor-augmented insulin pump therapy during clinical trial run-in and compared their continuous glucose monitoring (CGM) profiles with consensus recommendations. We aimed to provide insight into the applicability of currently recommended CGM-based targets while accounting for current Diabetes UK guidelines. METHODS In this analysis, adults aged 60 years or older with type 1 diabetes with a duration of at least 10 years and entering the Older Adult Closed Loop (ORACL) trial were studied. The trial was done at two tertiary hospitals in Australia. Individuals who were independent with diabetes self-management, as well as those receiving caregiver assistance for their diabetes management, were eligible for inclusion. Participants underwent baseline clinical assessment, which included medical history and examination, testing for frailty, functional ability, cognitive functioning, psychosocial wellbeing, and subjective sleep quality; fasting venous blood samples were collected for C-peptide, glucose, and glycated haemoglobin A1c measurement. Sensor-augmented pumps, carbohydrate-counting education, and diabetes education were provided to participants by diabetes nurse educators, dietitians, and endocrinologists experienced in type 1 diabetes clinical care. CGM data were subsequently collected for 2 weeks during sensor-augmented pump therapy. The ORACL trial is registered with the Australian New Zealand Clinical Trial Registry, ACTRN12619000515190. FINDINGS Our analysis included all 30 participants who completed the ORACL trial run-in-19 (63%) women and 11 (37%) men (mean age 67 years [SD 5], median diabetes duration 38 years [IQR 20-47], and insulin total daily dose 0·55 units [0·41-0·66] per kg bodyweight). Ten (33%) of 30 participants had impaired hypoglycaemia awareness and six (20%) were pre-frail; none were frail. The median CGM time in range 3·9-10·0 mmol/L was 71% (IQR 64-79). The time spent with glucose above 10·0 mmol/L was 27% (18-35) and above 13·9 mmol/L was 3·9% (2·4-10·2). The time with glucose below 3·9 mmol/L was 2·0% (1·2-3·1) and the time below 3·0 mmol/L was 0·2% (0·1-0·4). Only two (7%) of 30 participants met all CGM-based consensus recommendations modified for older adults. Time in hypoglycaemia was lower among the 16 participants with predictive low-glucose alerts enabled than among the 14 participants not using predictive low-glucose alerts (median difference -1·1 percentage points [95% CI -2·0 to -0·1]; p=0·038). This difference was even greater overnight (-2·3 percentage points [-3·2 to -1·0]; p=0·0018). One serious adverse event occurred (elective cardiac stent). INTERPRETATION Using sensor-augmented pumps after multidisciplinary education, this group of older adults without frailty achieved a time in range far exceeding minimum consensus recommendations. However, the current stringent hypoglycaemia recommendations for all older adults were not met. Predictive low alerts could reduce hypoglycaemia, particularly overnight. Investigation into the effectiveness of CGM-based targets that consider frailty, functional status, and diabetes therapies for older adults is warranted. FUNDING JDRF and Diabetes Australia.
Collapse
Affiliation(s)
- Steven Trawley
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Psychology, The Cairnmillar Institute, Melbourne, VIC Australia
| | - Glenn M Ward
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, VIC, Australia
| | - Sara Vogrin
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia
| | - Peter G Colman
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Spiros Fourlanos
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, VIC, Australia; Australian Centre for Accelerating Diabetes Innovations, Melbourne, VIC, Australia
| | - Charlotte A Grills
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, VIC, Australia
| | - Melissa H Lee
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, VIC, Australia
| | - Richard J MacIsaac
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, VIC, Australia; Australian Centre for Accelerating Diabetes Innovations, Melbourne, VIC, Australia
| | - Andisheh Mohammad Alipoor
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, VIC, Australia
| | - David N O'Neal
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, VIC, Australia
| | - Niamh A O'Regan
- Department of Geriatric Medicine, Waterford Integrated Care for Older People, University Hospital Waterford, Waterford, Ireland
| | - Vijaya Sundararajan
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Public Health, La Trobe University, Melbourne, VIC Australia
| | - Sybil A McAuley
- Department of Medicine, The University of Melbourne, Melbourne, VIC, Australia; Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, VIC, Australia; Department of Psychology, The Cairnmillar Institute, Melbourne, VIC Australia.
| |
Collapse
|
3
|
Chakrabarti A, Trawley S, Kubilay E, Mohammad Alipoor A, Vogrin S, Fourlanos S, Lee MH, O'Neal DN, O'Regan NA, Sundararajan V, Ward GM, MacIsaac RJ, Colman PG, McAuley SA. Closed-Loop Insulin Delivery Effects on Glycemia During Sleep and Sleep Quality in Older Adults with Type 1 Diabetes: Results from the ORACL Trial. Diabetes Technol Ther 2022; 24:666-671. [PMID: 35575751 DOI: 10.1089/dia.2022.0110] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Sleep-related effects of closed-loop therapy among older adults with type 1 diabetes have not been well established. In the OldeR Adult Closed-Loop (ORACL) randomized, crossover trial of first-generation closed-loop therapy (MiniMed 670G), participants wore actigraphy and completed sleep diaries for 14-day periods at stage end. During objectively measured sleep (actigraphy) with closed-loop versus sensor-augmented pump therapy, glucose time-in-range 70-180 mg/dL (3.9-10.0 mmol/L) was greater (90.3% vs. 78.7%, respectively; difference 8.2 percentage points [95% confidence interval {CI} 1.5 to 13.0]; P = 0.008), and there were fewer sensor hypoglycemia episodes (18 vs. 43, respectively; incident rate ratio 0.40 [95% CI 0.20 to 0.55]; P = 0.007). Sleep quality recorded daily was worse with closed-loop therapy (P = 0.006); Pittsburgh Sleep Quality Index did not differ. There were 30% more system alarms during monitored sleep with closed-loop therapy (P < 0.001). First-generation closed-loop therapy has important glycemic benefits during sleep for older adults, with deterioration in some sleep quality measures. Sleep quality warrants prioritization and investigation during advancement of closed-loop technology.
Collapse
Affiliation(s)
- Anindita Chakrabarti
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Steven Trawley
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Psychology, The Cairnmillar Institute, Melbourne, Victoria, Australia
| | - Erin Kubilay
- Department of Psychology, The Cairnmillar Institute, Melbourne, Victoria, Australia
| | - Andisheh Mohammad Alipoor
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Sara Vogrin
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
| | - Spiros Fourlanos
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Australian Centre for Accelerating Diabetes Innovations, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Melissa H Lee
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - David N O'Neal
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Niamh A O'Regan
- Department of Geriatric Medicine, Waterford Integrated Care for Older People, University Hospital Waterford, Waterford, Ireland
| | - Vijaya Sundararajan
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Public Health, La Trobe University, Melbourne, Victoria, Australia
| | - Glenn M Ward
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Richard J MacIsaac
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
- Australian Centre for Accelerating Diabetes Innovations, The University of Melbourne, Melbourne, Victoria, Australia
| | - Peter G Colman
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Sybil A McAuley
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Victoria, Australia
| |
Collapse
|
4
|
Chakrabarti A, Mohammad Alipoor A, Sandra Segaran TR, Fourlanos S, MacIsaac RJ, Colman PG, McAuley SA. Exercise habits and glucose management among older adults with type 1 diabetes using insulin pumps. Acta Diabetol 2022; 59:865-868. [PMID: 35233639 PMCID: PMC9085699 DOI: 10.1007/s00592-022-01858-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/21/2022] [Indexed: 11/23/2022]
Affiliation(s)
- Anindita Chakrabarti
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | | | | | - Spiros Fourlanos
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, Australia
| | - Richard J MacIsaac
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Peter G Colman
- Department of Medicine, The University of Melbourne, Melbourne, Australia
- Department of Diabetes and Endocrinology, Royal Melbourne Hospital, Melbourne, Australia
| | - Sybil A McAuley
- Department of Medicine, The University of Melbourne, Melbourne, Australia.
- Department of Endocrinology and Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia.
| |
Collapse
|
5
|
McAuley SA, Trawley S, Vogrin S, Ward GM, Fourlanos S, Grills CA, Lee MH, Alipoor AM, O'Neal DN, O'Regan NA, Sundararajan V, Colman PG, MacIsaac RJ. Closed-Loop Insulin Delivery Versus Sensor-Augmented Pump Therapy in Older Adults With Type 1 Diabetes (ORACL): A Randomized, Crossover Trial. Diabetes Care 2022; 45:381-390. [PMID: 34844995 DOI: 10.2337/dc21-1667] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/01/2021] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To assess the efficacy and safety of closed-loop insulin delivery compared with sensor-augmented pump therapy among older adults with type 1 diabetes. RESEARCH DESIGN AND METHODS This open-label, randomized (1:1), crossover trial compared 4 months of closed-loop versus sensor-augmented pump therapy. Eligible adults were aged ≥60 years, with type 1 diabetes (duration ≥10 years), using an insulin pump. The primary outcome was continuous glucose monitoring (CGM) time in range (TIR; 3.9-10.0 mmol/L). RESULTS There were 30 participants (mean age 67 [SD 5] years), with median type 1 diabetes duration of 38 years (interquartile range [IQR] 20-47), randomized (n = 15 to each sequence); all completed the trial. The mean TIR was 75.2% (SD 6.3) during the closed-loop stage and 69.0% (9.1) during the sensor-augmented pump stage (difference of 6.2 percentage points [95% CI 4.4 to 8.0]; P < 0.0001). All prespecified CGM metrics favored closed loop over the sensor-augmented pump; benefits were greatest overnight. Closed loop reduced CGM time <3.9 mmol/L during 24 h/day by 0.5 percentage points (95% CI 0.3 to 1.1; P = 0.0005) and overnight by 0.8 percentage points (0.4 to 1.1; P < 0.0001) compared with sensor-augmented pump. There was no significant difference in HbA1c between closed-loop versus sensor-augmented pump stages (7.3% [IQR, 7.1-7.5] (56 mmol/mol [54-59]) vs. 7.5% [7.1-7.9] (59 mmol/mol [54-62]), respectively; P = 0.13). Three severe hypoglycemia events occurred during the closed-loop stage and two occurred during the sensor-augmented pump stage; no hypoglycemic events required hospitalization. One episode of diabetic ketoacidosis occurred during the sensor-augmented pump stage; no serious adverse events occurred during the closed-loop stage. CONCLUSIONS Closed-loop therapy is an effective treatment option for older adults with long-duration type 1 diabetes, and no safety issues were identified. These older adults had higher TIR accompanied by less time below range during closed loop than during sensor-augmented pump therapy. Of particular clinical importance, closed loop reduced the time spent in hypoglycemic range overnight.
Collapse
Affiliation(s)
- Sybil A McAuley
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Endocrinology & Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Steven Trawley
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Psychology, Cairnmillar Institute, Melbourne, Australia
| | - Sara Vogrin
- Department of Medicine, The University of Melbourne, Melbourne, Australia
| | - Glenn M Ward
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Endocrinology & Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Spiros Fourlanos
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Diabetes and Endocrinology, The Royal Melbourne Hospital, Melbourne, Australia
| | - Charlotte A Grills
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Endocrinology & Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Melissa H Lee
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Endocrinology & Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Andisheh Mohammad Alipoor
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Endocrinology & Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - David N O'Neal
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Endocrinology & Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| | - Niamh A O'Regan
- Department of Geriatric Medicine, Waterford Integrated Care for Older People, University Hospital Waterford, Waterford, Ireland
| | - Vijaya Sundararajan
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Public Health, La Trobe University, Melbourne, Australia
| | - Peter G Colman
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Diabetes and Endocrinology, The Royal Melbourne Hospital, Melbourne, Australia
| | - Richard J MacIsaac
- Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Endocrinology & Diabetes, St Vincent's Hospital Melbourne, Melbourne, Australia
| |
Collapse
|