Development of a cost-effective ecg monitor for cardiac arrhythmia detection using heart rate variability

2016 ◽  
Author(s):  
Apiwat Lek-uthai ◽  
Pakpum Somboon ◽  
Arporn Teeramongkonrasmee
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Cardiac Arrhythmia ◽  
Cost Effective ◽  
Arrhythmia Detection

scholarly journals Effect of Warm Foot Bath on Heart Rate Variability in Hypertension

2021 ◽  
pp. 22-28
Author(s):  
Abhay Kumar ◽  
Sujatha K. J. ◽  
Prashanth Shetty
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Cost Effective ◽  
Public Health Issue ◽  
P Value ◽  
Global Public Health ◽  
Clinical Trial Registry ◽  
Efficient Treatment ◽  
Change In Mean

Aims: Warm foot bath is a simple, cost-effective, efficient treatment modality used in Naturopathy in the management of hypertension, a preventable and treatable global public health issue. This study was done to assess the effect of warm foot bath on heart rate variability and blood pressure and thereby to substantiate the clinical understanding of its effect in hypertensive individuals. Methodology: From the inpatient department of Shri Dharmasthala Yoga and Nature cure hospital Shantivana, hundred subjects diagnosed with hypertension belonging to the age group of 30 to 60 years were recruited for the study and warm foot bath was given to all the patients. Subjects were assessed for Blood Pressure (BP) and Heart Rate Variability (HRV) before and after the intervention of 15 minutes. Results: The data analysis shows a significant reduction in SBP (p<0.001) and DBP (P<0.001). Result showed there is significant reduction seen in MEAN RR, RMSSD, NN50, PN50, VLF and significant increase in LF, HR, LF/HF ratio p value of (p<0.001). There is no significant change in MEAN HF (p>0.005). Conclusion: The result of the study shows that warm foot bath reduces the sympathetic tone and shifts the Sympatho-vagal balance in favour of parasympathetic dominance and hence, it can be concluded that warm foot bath can be effectively used in the management of hypertension. Trial Registration: Clinical Trial Registry - India (CTRI), CTRI Reg. No.- CTRI/2020/01/022640.

RESEARCH ON CARDIAC ARRHYTHMIA AND HEART RATE VARIABILITY BASED ON 24- HOUR HOLTER ECG IN ELDERLY PATIENTS WITH DILATED CARDIOMYOPATHY

2014 ◽  
pp. 40-47
Author(s):  
Vu Xuan Tho Doan ◽  
Thi Bich Thuan Le
Keyword(s):  
Heart Failure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Elderly Patients ◽  
Dilated Cardiomyopathy ◽  
Cardiac Arrhythmia ◽  
Sinus Bradycardia ◽  
Control Group ◽  
Case Group ◽  
Holter Ecg

Objectives: Study several parameters of cardiac arrhythmia and heart rate variability in elderly patients with dilated cardiomyopathy (DCM), investigate the relationship and correlation between these parameters with NYHA functional heart failure class, EF, LVDd in elderly patients with DCM. Subjects and methods: 30 patients with DCM undergone treatment in Cardiovascular Department. Their ages were ≥ 60. These patients were diagnosed heart failure according to Framingham criteria and DCM according to WHO/ISFC criteria. 24-hour Holter ECG was the method used to analyse cardiac arrhythmia as well as heart rate variability (HRV). These parameters were compared with those considered normal of 81 people. Results: Sinus bradycardia accounted for 6.7%, sinus tachycardia 96.7%, sinus pause 13.3%, premature ventricular contraction 76.7%, supraventricular tachycardia 6.7%, ventricular tachycardia 40%. Lown’s classification: Lown’s class I undertook 46.7%, Lown’s class II 53.3%, Lown’s class III 23.3%, Lown’s class IVA 63.3%, Lown’s class IVB 36.7%, V 6.7%, p < 0.01. HRV indices: SDNN: 57.93 ± 16.99 ms, SDANN: 47.33 ± 16.69 ms, SDNNidx: 31.83 ± 11.00 ms, rMSSD: 19.87 ± 4.39 ms, pNN50: 3.67 ± 2.88%, the parameters acquired from case group were lower than those of control group with statistical difference (p < 0.0001). HRV decreased in proportion to NYHA functional heart failure class and LVEF. There was proportional correlation between LVEF with SDNN (r=0.77, p < 0.01), SDANN (r=0.76, p<0.01), SDNNidx (r=0.66, p<0.01), rMSSD (r=0.58, p<0.01), and pNN50 (r=0.69, p<0.01). Conclusion: 24-hour Holter ECG was valuable in detecting cardiac arrhythmia and HRV in elderly patients with DCM. This method also contributed to the following up, treatment and prognosis of this disease. Keywords: Arrhythmia, heart rate variability, dilated cardiomyopathy, elderly

scholarly journals Deceleration capacity of heart rate variability as a predictor of sedation related hypotension

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Feng-Fang Tsai ◽  
Chih-Min Liu ◽  
Hsiu-Po Wang ◽  
Jia-Rong Yeh ◽  
Shou-Zen Fan
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Cardiac Contractility ◽  
Cost Effective ◽  
Haemodynamic Monitoring ◽  
Deceleration Capacity ◽  
Endoscopic Procedures ◽  
Total Data ◽  
Age Range

AbstractHigh risk and geriatric patients are supposed to suffer higher risks of hypotension underwent painless endoscopic procedures. This study evaluated different biomarkers associated with hypotension in off-site patients and aimed to determine the most relevant risk factors in space and monitoring limited environment. The inclusions of this observational cohort study underwent complex endoscopic procedures were sedated with age-adjusted doses of target-controlled infusion of propofol. The following pre-sedative parameters were analysed: time domain, frequency domain, and Deceleration capacity (DC) of heart rate variability, estimated cardiac output data and the index of cardiac contractility from the cardiometer. Patients were divided into hypotension group (blood pressure < 90 mmHg or a > 35% decrease) and non-hypotension group according to peri-sedative blood pressure, regression analysis is used to examine the association between factors and hypotension. Total data from 178 patients (age range: 33–94 years) were analysed. Age was not significantly different between the hypotension and non-hypotension groups (p = 0.978). Among all the factors, DC was most associated with hypotension (p = 0.05), better than cardiometer, age, and ASA status. In conclusion, DC, which can be interpreted as the indicator of parasympathetic activity and was significantly and negatively correlated with sedation-related hypotension. Pre-sedative measuring DC from routine ECG monitoring is simple and cost-effective and should be added to haemodynamic monitoring in the endoscopic room.

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