Towards development of a mobile RF Doppler sensor for continuous heart rate variability and blood pressure monitoring

2016 ◽  
Author(s):  
Insoo Kim ◽  
Yusuf A. Bhagat
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Blood Pressure Monitoring ◽  
Pressure Monitoring

scholarly journals Increase of Short-Term Heart Rate Variability Induced by Blood Pressure Measurements during Ambulatory Blood Pressure Monitoring

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Attila Frigy ◽  
Annamária Magdás ◽  
Victor-Dan Moga ◽  
Ioana Georgiana Coteț ◽  
Miklós Kozlovszky ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Ambulatory Blood Pressure ◽  
Pressure Measurement ◽  
Blood Pressure Monitoring ◽  
Blood Pressure Measurement ◽  
Pressure Measurements ◽  
Pressure Monitoring ◽  
Short Term

Objective.The possible effect of blood pressure measurements per se on heart rate variability (HRV) was studied in the setting of concomitant ambulatory blood pressure monitoring (ABPM) and Holter ECG monitoring (HM).Methods.In 25 hypertensive patients (14 women and 11 men, mean age: 58.1 years), 24-hour combined ABPM and HM were performed. For every blood pressure measurement, 2-minute ECG segments (before, during, and after measurement) were analyzed to obtain time domain parameters of HRV: SDNN and rMSSD. Mean of normal RR intervals (MNN), SDNN/MNN, and rMSSD/MNN were calculated, too. Parameter variations related to blood pressure measurements were analyzed using one-way ANOVA with multiple comparisons.Results.2281 measurements (1518 during the day and 763 during the night) were included in the analysis. Both SDNN and SDNN/MNN had a constant (the same for 24-hour, daytime, and nighttime values) and significant change related to blood pressure measurements: an increase during measurements and a decrease after them (p<0.01for any variation).Conclusion.In the setting of combined ABPM and HM, the blood pressure measurement itself produces an increase in short-term heart rate variability. Clarifying the physiological basis and the possible clinical value of this phenomenon needs further studies.

Abstract P125: Performance of Ambulatory Blood Pressure Monitoring in Predicting Autonomic Dysfunction

Hypertension ◽  
2016 ◽  
Vol 68 (suppl_1) ◽  
Author(s):  
Abhilash Koratala ◽  
Kawther F Alquadan ◽  
Abutaleb A Ejaz
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Ambulatory Blood Pressure Monitoring ◽  
Autonomic Dysfunction ◽  
Ambulatory Blood Pressure ◽  
Blood Pressure Monitoring ◽  
Pressure Monitoring ◽  
Postprandial Hypotension ◽  
Increased Risk

Background: We investigated the predictive performance of orthostatic hypotension (OH) and ambulatory blood pressure monitoring (ABP) to predict autonomic dysfunction. Methods: In this retrospective analysis, statistical associations among the candidate variables were investigated and comparisons of predictive performances were performed using Receiver Operating Characteristics (ROC) curves. Results: Ninety-four patients were included for analysis. No significant correlations could be demonstrated between OH and components of ABP (reversal of circadian pattern, postprandial hypotension and heart rate variability), nor between OH and autonomic reflex screen. Reversal of circadian pattern did not demonstrate significant correlation (r= 0.12, p=0.237) with autonomic reflex screen, but postprandial hypotension (r=0.39, p=0.003) and heart rate variability (r=0.27, p=0.009) demonstrated significant correlations. Postprandial hypotension was associated with a five-fold (OR 4.83, CI95% 1.6 - 14.4, p=0.005) increased risk and heart rate variability with a four-fold (OR 3.75, CI95% 1.3-10.6, p=0.013) increased risk for autonomic dysfunction. Per ROC curves, heart rate variability (0.671, CI 95% 0.53-0.81, p=0.025) and postprandial hypotension (0.668, CI 95% 0.52-0.72, p=0.027) were among the best predictors of autonomic dysfunction in routine clinical practice. Conclusions: Postprandial hypotension and heart rate variability on ambulatory blood pressure monitoring are strong predictors of autonomic dysfunction in routine clinical practice.

Ambulatory Blood Pressure Recordings in Children and Adolescents

PEDIATRICS ◽  
1994 ◽  
Vol 94 (2) ◽  
pp. 180-184
Author(s):  
Gregory A. Harshfield ◽  
Bruce S. Alpert ◽  
Derrick A. Pulliam ◽  
Grant W. Somes ◽  
Dawn K. Wilson
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Systolic Blood Pressure ◽  
Ambulatory Blood Pressure ◽  
Reference Data ◽  
Blood Pressure Monitoring ◽  
Age Groups ◽  
Specific Reference ◽  
Pressure Monitoring ◽  
Black And White

Objective. To provide reference data for ambulatory blood pressure monitoring (ABPM) and to determine the influence of age, sex, and race on these values. Methods. ABPM was performed on 300 healthy, normotensive boys and girls between the ages of 10 and 18 years, including 160 boys and 140 girls, of whom 149 were white and 151 were black. Mean systolic blood pressure (SBP), diastolic blood pressure (DBP), and heart rate (HR) while awake and during sleep were calculated for black and white boys and girls aged 10 to 12 years, 13 to 15 years, and 16 to 18 years. Results. Boys compared with girls 10 to 12 years of age had higher mean (±SD) SBP (115 ± 9 vs 112 ± 9 mm Hg; P &lt; .01) and DBP (67 ± 7 vs 65 ± 5 mm Hg; P &lt; .01) while awake. Boys compared to girls 13 to 15 years of age had higher SBP while awake (116 ± 11 vs 112 ± 8 mm Hg; P &lt; .01). Boys compared with girls 16 to 18 years of age had higher SBP while awake (125 ± 12 vs 111 ± 9 mm Hg; P &lt; .01) and during sleep (116 ± 11 vs 106 ± 9 mm Hg). Comparisons within sex showed similar changes with age for boys and girls. Blacks compared with whites 13 to 15 years of age had higher SBP during sleep (109 ± 11 vs 105 ± 10 mm Hg; P &lt; .01), and blacks compared with whites 16 to 18 years of age had higher DBP during sleep (66 ± 7 vs 58 ± 6 mm Hg; P &lt; .01). Comparisons across age groups within race showed that blacks 16 to 18 years of age had higher SBP during sleep than blacks 10 to 12 years of age (109 ± 11 vs 104 ± 10 mm Hg), and higher DBP during sleep (66 ± 7 mm Hg; P &lt; .01) than blacks 10 to 12 years of age (61 ± 7 mm Hg; P &lt; .01) and 13 to 15 years of age (61 ± 8; P &lt; .01 mm Hg). The changes with age were not significant for white subjects. Conclusion. These results provide age-specific reference data for ABPM in youths. These values differ by sex (boys more than girls) and race (Blacks more than Whites).

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