scholarly journals Autonomic Nerve Activation Observed for Hemodialysis Patients While Squeezing a Soft Ball

2020 ◽  
Vol 12 (22) ◽  
pp. 9646
Author(s):  
Jian-Chiun Liou ◽  
Chih-Wei Peng ◽  
Philippe Basset ◽  
Zhen-Xi Chen
Keyword(s):  
Sleep Apnea ◽  
Pulse Rate ◽  
Respiratory Arrest ◽  
Hemodialysis Patients ◽  
Autonomic Nerve ◽  
Rate Measurement ◽  
Kidney Dialysis ◽  
Electrocardiogram Ecg ◽  
Continuous Pulse ◽  
Analyze Data

In this study, a medical grade pulse rate (PR) instrument was used to monitor hemodialysis patients, and the wearable product was applied for the 4 h observation. Electrocardiogram (ECG) and photoplethysmography (PPG) data were simultaneously collected to observe physiological phenomena in patients undergoing hemodialysis. The analyzed results of 38 patients undergoing the treatment (as sympathetic/parasympathetic balance indicators before-hemodialysis (HD), and after-HD) and autonomic nerve activation for the pulse rate (PR) measurement accompanied by squeezing a soft ball were also observed. The results prove the pulse rate measurement while squeezing the soft ball and analyze data, and we show that the analyzed results have a very concentrated normal distribution. This study presents oxygen saturation (SpO2) and continuous pulse rate distribution curves during the 4 h observation of the hemodialysis patients and we show that some patients undergoing kidney dialysis have sleep apnea. They become lethargic during dialysis and experience severe hypoxia due to intermittent respiratory arrest. Studies have confirmed that such monitoring and biofeedback designs can reduce the incidence of hypotension during dialysis.

scholarly journals Differential effects of the blood pressure state on pulse rate variability and heart rate variability in critically ill patients

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Elisa Mejía-Mejía ◽  
James M. May ◽  
Mohamed Elgendi ◽  
Panayiotis A. Kyriacou
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Pulse Rate ◽  
Pulse Transit Time ◽  
Pulse Rate Variability ◽  
Physiological Factors ◽  
Ecg Signals ◽  
Non Invasive ◽  
Electrocardiogram Ecg

AbstractHeart rate variability (HRV) utilizes the electrocardiogram (ECG) and has been widely studied as a non-invasive indicator of cardiac autonomic activity. Pulse rate variability (PRV) utilizes photoplethysmography (PPG) and recently has been used as a surrogate for HRV. Several studies have found that PRV is not entirely valid as an estimation of HRV and that several physiological factors, including the pulse transit time (PTT) and blood pressure (BP) changes, may affect PRV differently than HRV. This study aimed to assess the relationship between PRV and HRV under different BP states: hypotension, normotension, and hypertension. Using the MIMIC III database, 5 min segments of PPG and ECG signals were used to extract PRV and HRV, respectively. Several time-domain, frequency-domain, and nonlinear indices were obtained from these signals. Bland–Altman analysis, correlation analysis, and Friedman rank sum tests were used to compare HRV and PRV in each state, and PRV and HRV indices were compared among BP states using Kruskal–Wallis tests. The findings indicated that there were differences between PRV and HRV, especially in short-term and nonlinear indices, and although PRV and HRV were altered in a similar manner when there was a change in BP, PRV seemed to be more sensitive to these changes.

Beat-to-Beat Cardiac Pulse Rate Measurement From Video

2021 ◽  
Author(s):  
Brian L. Hill ◽  
Xin Liu ◽  
Daniel McDuff
Keyword(s):  
Pulse Rate ◽  
Rate Measurement ◽  
Cardiac Pulse

scholarly journals Pulse rate analysis in case of central sleep apnea: A new algorithm for cardiac rate estimation

2009 ◽  
Author(s):  
Quang-Vinh Nguyen ◽  
R. Le Page ◽  
J.-M. Goujon ◽  
P. Guyader ◽  
M. Billon
Keyword(s):  
Sleep Apnea ◽  
Pulse Rate ◽  
Central Sleep Apnea ◽  
Cardiac Rate ◽  
Rate Estimation ◽  
Rate Analysis
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