• The Transactions of the Korean Institute of Electrical Engineers D
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• v.54 no.8
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• pp.504-509
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• 2005

This paper presents a new method for obtaining the noninvasive and unrestrained blood pressure readings noninvasively and unrestrainedly using based on reflected wave arrival time(RAT) in the volume of pulse. Since this new method employs only volume pulse, is more rapider and simpler than the method using pulse transit time(PTT) because it only employs the volume of pulse. Blood pressure, PTT and RAT were acquired from 15 healthy subjects. Each subjects were performed forty trials of each measurement. As a result of those trials, the mean error between oscillometric and RAT measurements for systolic blood pressure was $4.55\pm5.64mmHg$. This result showed quite equal with the mean error between oscillometric and PPT measurf:ments, $4.22\pm5.30mmHg$, However, it was not obtained a satisfactory result in the relativity of oscillometric to both RAT and PPT measurements for diastolic blood pressure because of personal difference. To conclude, the method of systolic blood pressure estimation noninvasively and unrestrainedly using by RAT may be used as the method by PTT. Nevertheless, additional studies would be necessary for the RAT/PTT estimation of diastolic blood Pressure measurement.

• Journal of People, Plants, and Environment
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• v.22 no.5
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• pp.445-454
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• 2019

This study was conducted to find out physical changes in the blood pressure and saliva cortisol of patients with high blood pressure and diabetes after participating in agro-healing activities. The saliva cortisol and blood pressure of 14 males and females aged 49.79±10.48 on average were measured after participating in agro-healing activities. The saliva collection system was used, and their satisfaction level for the program was also surveyed. Changes in the values before and after participating in the agro-healing activities were compared and analyzed. The cortisol concentration, a stress hormone, was reduced from 6.76nmol/L before the program to 4.86nmol/L after the program, down by 1.9nmol/L, which was a statistically significant difference (z=-3.170, p<.01). In addition, the cortisol concentration was gradually reduced through the entire program from Session 1 to Session 7. Changes in the blood pressure of subjects before and after participating in agro-healing activities were examined, and the total systolic and diastolic blood pressure continuously decreased after participating in agro-healing activities through the entire program from Session 1 to Session 7. Their systolic blood pressure was reduced statistically significantly (z=-1.947, p<.05). Also, participants' satisfaction was analyzed and it was found that more than 95% of participants answered 'satisfied' and 'very satisfied' with agro-healing activities. Therefore, these results indicate that agro-healing activities performed in the healing-farm had a positive impact on the cortisol concentration and blood pressure of patients with chronic diseases such as diabetes and high blood pressure. In addition, their high satisfaction for this program seemed to improve the psychological and physiological conditions of subjects.

• International journal of advanced smart convergence
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• v.7 no.3
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• pp.44-60
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• 2018

This study is to identify the effects of hypertension management program at a community health center on the disease-related knowledge, self-efficacy, anthropometric measurements and blood pressure of a hypertensive patient in local community. This study is a quasi-experimental study using nonequivalence control group no-synchronized design in order to verify the effects of the hypertension management program at a community health center on the hypertension-related knowledge, self-efficacy, anthropometric measurements and blood pressure of a hypertensive patient in local community. The result indicated a significant difference between the experimental group and control group in the scores of hypertension-related knowledge (t=-4.25, p<.001), self-efficacy (t=-4.20, p<.001), systolic blood pressure (t=7.70, p<.001) and diastolic blood(t=5.91, p<.001), body weight(t=2.32, p=.026) and abdominal circumference(t=2.17, p=.036). The hypertensive patients' knowledge and self-efficacy were improved, and their weight and abdominal circumference as well as systolic blood pressure and diastolic blood pressure were reduced. Therefore, it was confirmed that multilateral approaches in terms of physical and psychosocial aspects only targeting hypertensive patients were required for managing hypertensive patients in local community.

• Clinical and Experimental Pediatrics
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• v.51 no.9
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• pp.998-1006
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• 2008

Purpose : Hypertension is defined as average systolic blood pressure and/or diastolic blood pressure that is ${\geq}95^{th}$ percentile for gender, age, and height on ${\geq}three$ occasions. Knowing that blood pressure values increase in children as they grow older, the purposes of this study were to measure blood pressure by an oscillometric device and to determine normal values and percentile curves for children. Methods : Systolic and diastolic blood pressures were measured twice with an oscillometric device in 3,545 boys and 3,145 girls under six years of age, in Seoul. Using this data, we determined average blood pressure values and percentile curves based on gender and age; we subdivided these values into blood pressures of $50^{th}$, $90^{th}$, $95^{th}$, and $99^{th}$ percentiles, by percentile of height. The regression coefficients and standard deviations of the systolic and diastolic blood pressure values were obtained from linear regression models. Results : Older boys and girls had higher systolic and diastolic blood pressure values. Older boys and girls in the same percentile of height for age had higher systolic and diastolic blood pressure values. Taller boys and girls within the same age group had higher systolic and diastolic blood pressure values. Conclusion : Blood pressure standards based on gender, age, and height were obtained via an oscillometric method. Llimitation of this study is that the study population was not from the whole country, but exclusively from Seoul. Nonetheless, the data from this study will be helpful in diagnosing and managing hypertension in Korean children.

• Journal of Preventive Medicine and Public Health
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• v.21 no.1 s.23
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• pp.99-112
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• 1988

Questionnaires and blood pressure measurements were administered to 279 medical school undergraduates in 1987 to investigate the relationship between psychosocial factors and blood pressure as well as reliability and validity of the Framingham Type A Behavior Scale(FTA). The reliability coefficients of SCL-90-R and nh measured by Spearman-Brown haves split test were $0.57{\sim}0.91$. The factors of FTA extracted by principal component analysis were hard-driving competitiveness factor and impatience factor(2-factor solution) . The total score of nh was positively correlated with relative weight and place raised but the correlations were insignificant, and had significantly positive but weak correlations with depression, anxiety, hostility, paranoid, and psychoticism subscales of SCL-90-R. In the univariate analysis of blood pressures, relative weight and family history were significant in systolic pressure in males and economic status was significant in blood pressures in both sexes. For diastolic pressure, relative weight and frequency of alcohol intake were significant in males and relative weight was in females. After controlling relative weight, the frequency of alcohol intake for diastolic pressure and economic status for systolic pressure were significant in males. The important variables selected by stepwise regression analysis were relative weight and economic status for systolic pressure of males and relative weight and the frequency of alcohol intake for diastolic pressure. At the level of alpha 0.1, depression subscale was added to the model, changing coefficient of determination 0.206 to 0.217. In females, economic status and relative weight were selected for systolic pressure and for diastolic pressure body mass index alone, but the model of blood pressure for females was considered to be unstable due to small sample size(56). FTA was unrelated to the blood pressures in both sexes.

• Journal of Korean Academy of Nursing
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• v.32 no.5
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• pp.633-642
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• 2002

The purpose of this study was to evaluate the effect of a Yoga program on decreasing blood pressure in elderly patients with essential hypertension and to suggest a yoga program effective as a nursing intervention tool to reduced blood pressure with increasing life satisfaction. Method: The subjects of this study were 24 elderly's essential hypertension, who practiced yoga by three times a week for 8 weeks. In order to evaluate the effect of the yoga program, blood pressure, physiological parameters (Total cholesterol, HDL, LDL, triglycerides) and level of life satisfaction were measured before and after the training. Collected date were analyzed by SPSSWIN program. Result: 1) There were significant reduction in systolic and diastolic blood pressure. 2) There were significant reductions in total cholesterol, LDL, triglycerides but no significant increased in HDL. 3) Blood pressure changes were time specific : Both of systolic and diastolic blood pressures were significantly reduced after 2weeks. 4) There was a significant increase in life satisfaction. Conclusion: The results proved that a yoga program was an effective nursing intervention to reduce blood pressure and to increased life satisfaction for elderly patients with essential hypertension.

• Journal of Biomedical Engineering Research
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• v.30 no.6
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• pp.510-515
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• 2009

In this paper, variable characteristic ratio algorithm based on oscillometric method is proposed to enhance the accuracy of blood pressure measurement. We combined the slope-based approach and fuzzy inference technique to change the characteristic ratios of height-based method. The proposed algorithm was assessed on 255 measurements from 85 subjects and compared with the conventional height-based algorithm. The testing results showed that the developed algorithm achieved an overall grade A for both systolic and diastolic blood pressures according to the BHS protocol. And, mean standard deviation between the observers and the developed algorithm were 5.71mmHg and 6.29mmHg for systolic and diastolic pressures respectively, which also fulfilled the AAMI criteria. In conclusion, this algorithm was successfully developed and recommended for further clinical trials with the wider adult population.

• The Korea Journal of Herbology
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• v.30 no.4
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• pp.129-135
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• 2015

Objectives : Clerodendron trichotomumThunberg grows wild fields and mountains in South Korea and China. They have been used for anti-hypertension disease. This study was performed in order to observe the effects ofClerodendron trichotomumThunberg tea on anti-hypertension.Methods : For the study ofClerodendron trichotomumThunberg tea, we had divided male SHR (Spontaneously Hypertensive Rat) to ten groups. Control group is SHR. The treatment group is SHR which is administered tea extract at dose of 200 mg/kg/day and 500 mg/kg/day orally for 8 weeks. We measured systolic blood pressure, diastolic blood pressure, number of pulse, body weight, total cholesterol and triglyceride from blood serum.Results : The level of systolic and diastolic blood pressure were significantly decreased by 12.5% and 44.9% inClerodendron trichotomumThunberg tea groups than control group. Heart rate ofClerodendron trichotomumThunberg tea groups, 24.5%, was significantly lower than control group. We found that treatment with the water extract fromClerodendron trichotomumThunberg leave and flower significantly decreased weight of body, total cholesterol and triglyceride to 20.4% and 27.7% compared to untreated control group, significantly (P< 0.05).Conclusions : These results suggest that leaf and flower tea ofClerodendron trichotomumThunberg tea is effective in prevention and treatment of hypertension and decreasing cholesterol. Long term consumption ofClerodendron trichotomumThunberg leaf and flower tea can be help in lowering high systolic and blood diastolic pressure, heart rate and blood serum in SHR.

• Journal of the Korean Society of Food Science and Nutrition
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• v.24 no.4
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• pp.493-501
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• 1995

To investigate an effect of dietary sodium and potassium on blood pressure, 418 adolescents living in Kangwha area were studied. Two measurements were taken on each blood pressure(diastolic, systolic) and the average of the two readings was used in the analysis. Sodium and potassium intake were estimated by the determination of those electrolytes in 24hr urine. Not only dietary factors but also physical growth factors such as weight, height, arm-circumference and skinfold-thickness were induced in the stepwise multiple regression analysis to indentify the relative importance between the factors. The variation of blood pressure both in systolic and diastolic in both sexes was inconsistent with the levels of sodium and potassium intake. The results of multiple regression analysis showed that the physical growth were more influential than nutrient factor. It suggested that hypertension risk factors observed form the adults, may not be identical with that of the growing aged population. After control of the physical growth, there was no significant variation observed by the level of sodium and potassium intake on blood pressure. In summary, the results indicate that growth has been more influential than dietary factor on blood pressure for growing aged population.

• Journal of Pharmacopuncture
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• v.5 no.1 s.8
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• pp.105-112
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• 2002

Objective: This study was designed to evaluate the possibility of Hypertension by moistening Herbal-acupuncture at Blood Pressure Point(HN136). Methods: We reviewed 14 patients of Hypertension. They were hospitalized at oriental medical hospital of Sang-Ji university for 2002. 1. 2. - 2002. 5. 2. First, we divided into two groups; Group Ⅰ was administrated by moistening Herbal-acupuncture at Blood Pressure Point(HN136), and was not given any western medicine about Hypertension during the period of experiment. Group Ⅱ was administrated by moistening Herbal-acupuncture at Blood Pressure Point(HN136), and given western medicine about Hypertension during the period of experiment. we observed the change of systolic and diastolic for 2 weeks, and compared Group Ⅰ with Group Ⅱ . Results: The results obtained as follows: 1. The figure of systolic in Group Ⅰ was decreased, but there was no signification. There was a significant decrease in Group Ⅱ (p<0.05) 2. The figure of diastolic in Group Ⅰ was decreased, but there was no signification. There was a significant decrease in Group Ⅱ (p<0.05) 3. Group Ⅱ was more effective than Group Ⅰ in the results. Conclusion: The results suggest that moistening Herbal-acupuncture at Blood Pressure Point(HN136) was effective treatment of Hypertension. So further research is needed continuously.