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BMC Endocrine Disorders

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Open Access 01-12-2021 | Tachyarrythmia | Research article

Significant abnormal glycemic variability increased the risk for arrhythmias in elderly type 2 diabetic patients

Authors: Jianbo Zhang, Jianmin Yang, Liwei Liu, Liyan Li, Jiangyin Cui, Shuo Wu, Kuanxiao Tang

Published in: BMC Endocrine Disorders | Issue 1/2021

Abstract

Background

Little is known about whether the influence of glycemic variability on arrhythmia is related to age in type 2 diabetes mellitus (T2DM). Therefore, we aimed to compare the association between glycemic variability and arrhythmia in middle-aged and elderly T2DM patients.

Methods

A total of 107 patients were divided into two groups: elderly diabetes mellitus group (EDM, n = 73) and middle-aged diabetes mellitus group (MDM, n = 34). The main clinical data, continuous glucose monitoring (CGM) and dynamic ECG reports were collected. The parameters including standard deviation of blood glucose (SDBG), largest amplitude of glycemic excursions (LAGE), mean amplitude of glycemic excursions (MAGE), absolute means of daily differences (MODD), time in range (TIR), time below range (TBR), time above range (TAR), coefficient of variation (CV) were tested for glycemic variability evaluation.

Results

In terms of blood glucose fluctuations, MAGE (5.77 ± 2.16 mmol/L vs 4.63 ± 1.89 mmol/L, P = 0.026), SDBG (2.39 ± 1.00 mmol/L vs 2.00 ± 0.82 mmol/L, P = 0.048), LAGE (9.53 ± 3.37 mmol/L vs 7.84 ± 2.64 mmol/L, P = 0.011) was significantly higher in EDM group than those of MDM group. The incidences of atrial premature beat, couplets of atrial premature beat, atrial tachycardia and ventricular premature beat were significantly higher in EDM group compared with the MDM group (all P < 0.05). Among patients with hypoglycemia events, the incidences of atrial premature beat, couplets of atrial premature beat, atrial tachycardia and ventricular premature beat (all P < 0.05) were significantly higher in the EDM group than those in the MDM group. In EDM group, TIR was negatively correlated with atrial tachycardia in the MAGE1 layer and with atrial tachycardia and ventricular premature beat in the MAGE2 layer, TBR was significantly positively correlated with atrial tachycardia in the MAGE2 layer (all P < 0.05). In MDM group, TAR was positively correlated with ventricular premature beat and atrial tachycardia in the MAGE2 layer (all P < 0.05).

Conclusions

The study demonstrated the elderly patients had greater glycemic variability and were more prone to arrhythmias. Therefore, active control of blood glucose fluctuation in elderly patients will help to reduce the risk of severe arrhythmia.

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Title: Significant abnormal glycemic variability increased the risk for arrhythmias in elderly type 2 diabetic patients
Authors: Jianbo Zhang
Jianmin Yang
Liwei Liu
Liyan Li
Jiangyin Cui
Shuo Wu
Kuanxiao Tang
Publication date: 01-12-2021
Publisher: BioMed Central
Keywords: Tachyarrythmia
Ventricular Tachycardia
Hypoglycemia
Type 2 Diabetes
Published in: BMC Endocrine Disorders / Issue 1/2021
Electronic ISSN: 1472-6823
DOI: https://doi.org/10.1186/s12902-021-00753-2

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