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Heart rate variability in type 2 diabetic subjects randomized to liraglutide or glimepiride treatment, both in combination with metformin: A randomized, open, parallel-group study
Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.
Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.
Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Örebro University, School of Medical Sciences. Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden. (Clinical Epidemiology and Biostatistics)ORCID iD: 0000-0002-3552-9153
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2019 (English)In: Endocrinology, Diabetes & Metabolism, ISSN 2398-9238, Vol. 2, no 2, article id e00058Article in journal (Refereed) Published
Abstract [en]

Aims: Reduced heart rate variability (HRV) and increased heart rate (HR) are associated with cardiovascular (CV) mortality. In the Liraglutide Effect and Action in Diabetes outcome trial, it was demonstrated a lower rate of CV events in type 2 diabetes (T2D) patients treated with liraglutide compared to placebo. We aimed to investigate the effects of liraglutide compared with glimepiride treatment in T2D patients on the CV risk parameters HR and HRV.

Methods: This was a post hoc study whereas sixty-two T2D individuals (45 males) were randomized to once daily 1.8 mg liraglutide or once daily 4 mg glimepiride, both in combination with 1 g metformin. HR and measurement of sympathetic activity, that is standard deviation (SD) of beat-to-beat (NN) intervals (SDNN), was assessed by 24-hour Holter monitoring system. Parasympathetic activity was analysed by root mean square of successive differences (RMSSD) in NN intervals and high-frequency (HF), low-frequency (LF) and very low-frequency power.

Results: Baseline clinical characteristics for liraglutide (n = 33) and glimepiride (n = 29) groups were well matched. There was a persistent increase in diurnal HR followed by a significantly increased HR at daytime 5.4 beats per minute, P = 0.011 in the liraglutide-treated group. There was no treatment change between groups in SDNN and RMSSD, or in HF and LF frequency power analysis.

Conclusions: Liraglutide treatment increased diurnal variation in hourly mean HR followed by an increase in mean daytime HR, independently of changes in sympathetic or parasympathetic activity.

Place, publisher, year, edition, pages
John Wiley & Sons, 2019. Vol. 2, no 2, article id e00058
Keywords [en]
automatic nervous system, cardiac autonomic neuropathy, glimepiride, heart rate variability, liraglutide, type 2 diabetes mellitus
National Category
Medical and Health Sciences Endocrinology and Diabetes
Identifiers
URN: urn:nbn:se:oru:diva-74521DOI: 10.1002/edm2.58PubMedID: 31008366OAI: oai:DiVA.org:oru-74521DiVA, id: diva2:1319131
Note

Funding agencies:

Swedish Heart and Lung foundation

Stockholm County Council and Karolinska Institutet

Novo Nordisk A/S

Available from: 2019-05-29 Created: 2019-05-29 Last updated: 2019-06-10Bibliographically approved

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Cao, YangJendle, Johan

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