Cardiovascular autonomic neuropathy is associated with increased glycemic variability driven by hyperglycemia rather than hypoglycemia in patients with diabetes

Cardiovascular autonomic neuropathy is associated with increased glycemic variability driven by hyperglycemia rather than hypoglycemia in patients with diabetes

AimCardiac autonomic neuropathy (CAN) has been suggested to be associated with hypoglycemia and impaired hypoglycemia unawareness. We have assessed the relationship between CAN and extensive measures of glucose variability (GV) in patients with type 1 and type 2 diabetes. MethodsParticipants with di...

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Main Author: Hoda, Gad (author)
Other Authors: Elgassim, Einas (author), Mohammed, Ibrahim (author), Alhaddad, Ahmad Yaser (author), Aly, Hussein Ahmed Hussein Zaky (author), Cabibihan, John-John (author), Al-Ali, Abdulaziz (author), Sadasivuni, Kishor Kumar (author), Petropoulos, Ioannis N. (author), Ponirakis, Georgios (author), Abuhelaiqa, Wajeeha (author), Jayyousi, Amin (author), AlMohanadi, Dabia (author), Baagar, Khaled (author), Malik, Rayaz A. (author)
Format: article
Published: 2023
Subjects:
Diabetes
Cardiac autonomic neuropathy (CAN)
Continuous glucose monitoring (CGM)
Hyperglycemia
Hypoglycemia
Online Access:http://dx.doi.org/10.1016/j.diabres.2023.110670
https://www.sciencedirect.com/science/article/pii/S016882272300431X
http://hdl.handle.net/10576/49565
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Summary:AimCardiac autonomic neuropathy (CAN) has been suggested to be associated with hypoglycemia and impaired hypoglycemia unawareness. We have assessed the relationship between CAN and extensive measures of glucose variability (GV) in patients with type 1 and type 2 diabetes. MethodsParticipants with diabetes underwent continuous glucose monitoring (CGM) to obtain measures of GV and the extent of hyperglycemia and hypoglycemia and cardiovascular autonomic reflex testing. ResultsOf the 40 participants (20 T1DM and 20 T2DM) (aged 40.70 ± 13.73 years, diabetes duration 14.43 ± 7.35 years, HbA1c 8.85 ± 1.70%), 23 (57.5%) had CAN. Despite a lower coefficient of variation (CV) (31.26 ± 11.87 vs. 40.33 ± 11.03, P = 0.018), they had a higher CONGA (8.42 ± 2.58 vs. 6.68 ± 1.88, P = 0.024) with a lower median LBGI (1.60 (range: 0.20–3.50) vs. 4.90 (range: 3.20–7.40), P = 0.010) and percentage median time spent in hypoglycemia (4 (range:4–13) vs. 1 (range:0–5), P = 0.008), compared to those without CAN. The percentage GRADEEuglycemia (3.30 ± 2.78 vs. 5.69 ± 3.09, P = 0.017) and GRADEHypoglycemia (0.3 (range: 0 – 3.80) vs. 1.8 (range: 0.9–6.5), P = 0.036) were significantly lower, while the percentage median GRADEHyperglycemia (95.45 (range:93–98) vs. 91.6 (82.8–95.1), P = 0.013) was significantly higher in participants with CAN compared to those without CAN. ConclusionCAN was associated with increased glycemic variability with less time in euglycemia attributed to a greater time in hyperglycemia but not hypoglycemia.

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