PMID- 36147784 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220924 IS - 2160-200X (Print) IS - 2160-200X (Electronic) IS - 2160-200X (Linking) VI - 12 IP - 4 DP - 2022 TI - Cardiac autonomic dysfunctions in type 2 diabetes mellitus: an investigative study with heart rate variability measures. PG - 224-232 AB - Cardiac autonomic neuropathy (CAN) is a common yet underdiagnosed complication of Type 2 diabetes mellitus (T2DM). Heart rate variability (HRV), a sensitive diagnostic marker of cardiovascular risk, could help detect CAN at its earliest stage. However, the progression of CAN based on age and disease duration in T2DM is lacking. In this study, we propose to explore the occurrence of CAN in patients with varying stages and duration of T2DM. This cross-sectional study involves participants with T2DM (n = 160) and healthy volunteers (n = 40) with an age range of 30-60 years of both genders. Patients in the T2DM group were further subdivided into four subgroups based on their disease duration [Prediabetes, disease duration <5 yrs (D1), 5-10 yrs (D2), and >10 yrs (D3)]. All participants underwent short-term HRV recording for 20 minutes and analyzed for both time and frequency domain measures. The study results showed a significant increase in Heart Rate (HR) in D1 (P = 0.031) and D3 (P = 0.001) groups compared to healthy controls. The time-domain measures of HRV were significantly reduced in the T2DM group compared to the healthy controls. Furthermore, this reduction is more intense in the D3 group than in D2 and D1. Correspondingly, in frequency domain parameters: total power, high-frequency power, and low-frequency power were significantly reduced in all the T2DM groups compared to healthy controls. The study concludes that the overall HRV (as determined by total power), sympathetic activity (low frequency power) and parasympathetic activity (time domain measures and high frequency power) were significantly reduced in all the diabetic subgroups except prediabetes as compared to the healthy controls, implying that both sympathetic and parasympathetic limbs are symmetrically affected in T2DM patients even in the earliest stages (<5 yrs) implying subclinical cardiac autonomic dysfunction in the earliest stages. CI - AJCD Copyright (c) 2022. FAU - John, Anu Panackal Purackal AU - John APP AD - Department of Neurophysiology, National Institute of Mental Health and Neurosciences Bangalore, India. FAU - Udupa, Kaviraja AU - Udupa K AD - Department of Neurophysiology, National Institute of Mental Health and Neurosciences Bangalore, India. FAU - Avangapur, Santhosh AU - Avangapur S AD - Department of Neurophysiology, National Institute of Mental Health and Neurosciences Bangalore, India. FAU - Sujan, Magadi Umeshchandra AU - Sujan MU AD - Department of Neurophysiology, National Institute of Mental Health and Neurosciences Bangalore, India. AD - Current affiliations: Department of Yoga, JSS Academy of Higher Education & Research, Mysuru (Deemed to be University) India. FAU - Inbaraj, Ganagarajan AU - Inbaraj G AD - Department of Neurophysiology, National Institute of Mental Health and Neurosciences Bangalore, India. FAU - Vasuki, Prathyusha Parthipulli AU - Vasuki PP AD - Department of Biostatistics, National Institute of Mental Health and Neurosciences Bangalore, India. FAU - Mahadevan, Anita AU - Mahadevan A AD - Department of Neuropathology, National Institute of Mental Health and Neurosciences Bangalore, India. FAU - Anilkumar, Rudramunisetty AU - Anilkumar R AD - Karnataka Institute of Endocrinology and Research (KIER), Diabetology Bangalore, India. FAU - Shekar, Mysore AnkeGowda AU - Shekar MA AD - Karnataka Institute of Endocrinology and Research (KIER), Diabetology Bangalore, India. FAU - Sathyaprabha, Talakad Narasappa AU - Sathyaprabha TN AD - Department of Neurophysiology, National Institute of Mental Health and Neurosciences Bangalore, India. LA - eng PT - Journal Article DEP - 20220815 PL - United States TA - Am J Cardiovasc Dis JT - American journal of cardiovascular disease JID - 101569582 PMC - PMC9490161 OTO - NOTNLM OT - Autonomic nervous system OT - cardiac autonomic neuropathy OT - heart rate OT - heart rate variability OT - sympathetic and parasympathetic activity OT - type 2 diabetes mellitus COIS- None. EDAT- 2022/09/24 06:00 MHDA- 2022/09/24 06:01 PMCR- 2022/08/15 CRDT- 2022/09/23 02:47 PHST- 2022/04/11 00:00 [received] PHST- 2022/06/27 00:00 [accepted] PHST- 2022/09/23 02:47 [entrez] PHST- 2022/09/24 06:00 [pubmed] PHST- 2022/09/24 06:01 [medline] PHST- 2022/08/15 00:00 [pmc-release] PST - epublish SO - Am J Cardiovasc Dis. 2022 Aug 15;12(4):224-232. eCollection 2022.