• Title/Summary/Keyword: Blood pressure

Search Result 3,910, Processing Time 0.118 seconds

Design of U-healthcare System for Real-time Blood Pressure Monitoring (실시간 혈압 모니터링 u-헬스케어 시스템의 설계)

  • Cho, Byung-Ho
    • The Journal of the Institute of Internet, Broadcasting and Communication
    • /
    • v.18 no.4
    • /
    • pp.161-168
    • /
    • 2018
  • High blood pressure is main today's adult disease and existing blood pressure gauge is not possible for real-time blood pressure measurement and remote monitoring. But real-time blood pressure monitoring u-healthcare system makes effect health management. In my paper, for monitoring real-time blood pressure, an architecture of real-time blood pressure monitoring system which consisted of wrist type-blood pressure measurement, smart-phone and u-healthcare server is presented. And the analog circuit architecture which is major core function for pulse wave detection and digital hardware architecture for wrist type-blood pressure measurement is presented. Also for software development to operate this hardware system, UML analysis method and flowcharts and screen design for this software design are showed. Therefore such design method in my paper is expected to be useful for real-time blood pressure monitoring u-healthcare system implementation.

Macronutrient Intake and Blood Pressure of Adolescents in Rural Korea (청소년기의 열량영양소 섭취양상과 혈압)

  • Kim, Young-Ok;Suh, Il;Nam, Chung-Mo;Kim, Suk-Il;Park, Im-Soo;Ahn, Hong-Seok
    • Korean Journal of Community Nutrition
    • /
    • v.1 no.3
    • /
    • pp.366-375
    • /
    • 1996
  • The effect of carbohydrates, fat and protein consumption on the blood pressure of adolescents was investigated from the cross sectional data. The two major areas of inquiry were : 1)measuring the variation of blood pressure at various levels of macronutient intake. 2)measuring the relative importance between the factor of nutrient intake and physical growth. A total of 726 students(341 boys and 385 girls) in the first grade of middle school in Kangwha country were studied for their dietary consumption and physical growth as well as blood pressure. Multiple regression analysis was used as the analytical method to identify the relative importance between the factors. Besides the macronutrient consumption, other nutrients such as vitamin and mineral intakes were included in the regression model. The results showed a variation of blood pressure by macronutrient intake level was in consistant both in blood pressure and by gender. Systolic and diastolic blood pressure decreased with increasing protein intake for girls(p<0.05). However, it was not observed in the case of boys. The systolic blood pressure of boys showed a tendency to decrease with fat intake increase, while their diastolic blood pressure showed the opposite trend. Results of the regression analysis showed that physical growth was a more influential factor than nutrition on blood pressure for both sexes. This could imply that the dietary hypertension factors observed in adults may not be operative generally in a population with normotensive blood pressure during growth.

  • PDF

Toward a More Complete Understanding of the Effects of Korean Ginseng (Panax ginseng) on Blood Pressure (고려인삼의 혈압에 미치는 영향에 대한 이해)

  • Nam, Ki Yeul;Yang, Byung Wook;Shin, Wang Soo;Park, Jong Dae
    • Korean Journal of Pharmacognosy
    • /
    • v.48 no.2
    • /
    • pp.97-107
    • /
    • 2017
  • There is no doubt that the effect of ginseng on blood pressure could be different depending upon the type of ginseng employed for the experiment and methodology, thereby can exert bilateral modulatory activity on blood pressure. It has been reported that ginseng induced no significant change in blood pressure in those subjects with normal blood pressure, but had a normalizing effect on the subjects with abnormal blood pressure. Especially, experimental evidence indicates that ginsenoside Rg3, a major component of red ginseng, has been found to lower blood pressure, which is mediated by release of endothelium-derived NO, enhancing the accumulation of cGMP in the rat aorta. This clinical results further support the beneficial effect of Korean ginseng on blood pressure elucidated by animal experiment. As expected, a multicentric non-controlled clinical study shows that the effect of ginseng consumption has been found to normalize blood pressure in hypertensive or hypotensive individuals as compared to virtually no effect in normotensives. In addition, ginseng has been known to exhibit blood pressure decreased with no significant side effect and deteriorated QOL during the combination therapy of ginseng and anti-hypertensive drugs. This review provides a comprehensive overview on the effects of Korean ginseng on blood pressure.

The Effects of Blood Lead on Blood Pressure Among Non-smokers (혈중 납이 비흡연자들의 혈압에 미치는 영향)

  • Pak, Yun-Suk;Park, Sang-Sin;Kim, Tae-Hun;Lee, Sang-Yoon;Kho, Young-Lim;Lee, Eun-Hee
    • Journal of Environmental Health Sciences
    • /
    • v.38 no.4
    • /
    • pp.311-322
    • /
    • 2012
  • Objective: The effect of lead on blood pressure remains controversial in spite of the numerous studies which have been conducted in the recent years. The aim of this study was to evaluate the effects of exposure to lead on blood pressure among non-smokers. Methods: In this cross sectional study, 1416 male and female non-smokers were enrolled, aged 20 years or older, from the Korean National Health and Nutrition Examination Survey 2008. Blood pressure, blood lead levels (BLLs), height, weight, and cotinine level were measured for all subjects. Results: Geometric mean BLLs of the participants was 2.20 ${\mu}g$/dl. BLLs were higher in the older, male, and lower education groups than the younger, female and higher education groups. After adjusting for age, sex, education and BMI through multiple regression analysis, a significant positive association between systolic blood pressure (p = 0.0357), diastolic blood pressure (p = 0.0111) and BLLs. Also, among the normal BMI group (18.5 kg/$m^2$ < BMI < 25 kg/$m^2$), we also found a significant positive association between diastolic blood pressure and BLLs (p = 0.0370). Conclusion: The present study showed that blood lead serves as a good predictor of blood pressure changes and that there was a statistically significant association between blood lead and blood pressure, especially diastolic blood pressure.

Improvement of the Accuracy of Wrist Noninvasive Blood Pressure Measurement Using Multiple Bio-signals (다중 생체 신호를 통한 손목 혈압 측정의 정확도 향상)

  • Jung, Woon-Mo;Sim, Myeong-Heon;Jung, Sang-O;Kim, Min-Yong;Yoon, Chan-Sol;Jung, In-Chol;Yoon, Hyung-Ro
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.60 no.8
    • /
    • pp.1606-1616
    • /
    • 2011
  • The blood pressure measuring equipment, which is being supplied and used most widely by being recognized convenience and accuracy now generally, is oscillometric blood pressure monitor. However, a change in blood pressure is basically influenced by diverse elements such as each individual's physiological status and physical condition. Thus, the measurement of blood pressure, which used single element called oscillation in blood pressure of being conveyed to cuff, is not considered on physiological elements such as cardiovascular system status and blood vessel stiffness index, and on external elements, thereby being quite in error. Accordingly, this study detected diverse bio-signals and body informations in each individual as the measurement subject such as ECG, PPG, and Korotkoff Sound in order to enhance convenience and accuracy of measuring blood pressure in the complex measurement equipment, thereby having extracted regression method for compensation in error of oscillometric blood pressure measurement on the wrist, and having improved accuracy of measuring blood pressure. To verify a method of improving accuracy, the blood pressure value in each of SBP, DBP, MAP was acquired through 4-stage experimental procedure targeting totally 51 subjects. Prior to experiment, the subjects were divided into two groups such as the experimental group for extracting regression method and the control group for verifying regression method. Its error was analyzed by comparing the reference blood pressure value, which was obtained through the auscultatory method, and the oscillometric blood pressure value on the wrist. To reduce the detected error, the blood pressure compensation regression method was calculated through multiple linear regression analysis on elements of blood pressure, individual body information, PTT, HR, K-Sound PSD change. Verification was carried out on improving significance and accuracy by applying the regression method to the data of control group. In the experimental results, as a result of confirming error on the reference blood pressure value in SBP, DBP, and MAP, which were acquired through applying regression method, the results of $-0.47{\pm}7.45$ mmHg, $-0.23{\pm}7.13$ mmHg, $0.06{\pm}6.39$ mmHg could be obtained. This is not only the numerical value of satisfying the sphygmomanometer reference of AAMI, but also shows the lower result than the numerical value in SBP : $-2.5{\pm}12.2$ mmHg, DBP : $-7.5{\pm}8.4$ mmHg, which is the mean error in the experimental results of Brram's research for verifying accuracy of Omron RX-M, which shows relatively high accuracy among wrist sphygmomanometers. Thus, the blood pressure compensation could be confirmed to be made within significant level.

A Study on Implemetation of Non-invasive Blood Pressure (비침습적 혈압 측정 시스템 구현에 관한 연구)

  • 노영아;이종수;김영길
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2000.10a
    • /
    • pp.451-454
    • /
    • 2000
  • Invasive methode and Non-invasive methode are used in blood pressure measurement. The Invasive methode can Set the correct measured blood pressure but, it has patient feels uncomfortable. So most of cases use Non-invasive methode. The Oscillometric method is commonly apply to modem electric sphygmomanometer and using various algorithm. In this paper describe about a algorithm it control and to determinate the cuff pressure, and filtering that data for measure the blood pressure. The communicating with personal computer can pressure deflation is by Solenoid valve and it uses RS-232 system in packet communication. The main using algorithm for blood pressure measurements are maximum amplitude algorithm and oscillometric algorithm. MAA(maximum amplitude algorithm) has various measured oscillation it depend on patient's age, height, weight and arm circumference size. In this paper, 1 studied the various measured oscillation apply to characteristic ratio and can get the result of systolic blood pressure, diastolic blood pressure, mean blood pressure. It was not used same ratio to measuring oscillation. In the MAA(maximum amplitude algorithm), we hope for reduce the difference with the real blood pressure and the measured blood pressure, when it applied with various specific ratio.

  • PDF

Estimation of Systolic Blood Pressure using PTTL (PTTL을 이용한 수축기 혈압추정)

  • Kil, Se-Kee;Kwan, Jang-Woo;Yoon, Kwang-Sub;Lee, Sang-Min
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.57 no.6
    • /
    • pp.1095-1101
    • /
    • 2008
  • The desirable method to diagnose abnormal blood pressure is to measure and manage blood pressure continuously and regularly. However, the sphygmomanometers that are based on a cuff have faults in that they can not measure the blood pressure continuously and they cause an unpleasant feeling. Therefore, it is essential to develop a new measuring method that causes no pain and that can obtain blood pressure continuously without any unpleasant feeling. Thus, we propose here a regression method to estimate the systolic blood pressure by using the PTTL(pulse transit time on leg) with some body parameters which are chosen from the relational analysis with systolic blood pressure. The data we use to make the regression model were obtained in triplicate from each of 50 males who were from 18 to 35 years. And we made estimation experiments of blood pressure on 10 males who did not take part in the making the regression model. According to the results, the proposed method showed a mean error of 4.00 mmHg and the standard variance was 2.45 mmHg. When we comparing the results of the proposed method with the rule of American National Standards Institute of the Association of the Advancement of Medical Instruments(ANSI/AAMI), the results satisfied the rule of a mean error less than 5 mmHg and a standard variance less than 8 mmHg. Therefore we were able to validate the usefulness of the proposed method.

A Comparative Study of Blood Pressure According to Cuff Size and Measurement Site (커프크기와 측정부위에 따른 혈압측정치 비교 연구)

  • Song, Mi-Ryeong;Kim, Eun-Kyung
    • Journal of Korean Academy of Fundamentals of Nursing
    • /
    • v.16 no.1
    • /
    • pp.6-13
    • /
    • 2009
  • Purpose: The purpose of this study was to identify differences in blood pressure according to cuff size and measurement sites of the participants. Method: The participants consisted of 50 women and 50 men whose upper arm circumference was $26\sim30cm$. They had no chronic illness and gave consent to participate. Blood pressure of the wrist was measured in the sitting position, the upper arm with a standard cuff, large and small cuffs were used for measurement in supine position and the thigh in prone position. The data were analyzed with paired t-test using SPSS 12.0 program. Result: The data for the upper arm showed a difference in systolic and diastolic blood pressure depending on the site of measurement. There was a significant difference between measurements with a standard cuff and measurements with large and small cuffs. The systolic blood pressure of the wrist and the thigh were significantly lower than that of the upper arm. Conclusion: These results suggest that the selection of an appropriate cuff is an essential element in ensuring accuracy when measuring blood pressure and differences in systolic blood pressure for the upper arm, wrist and thigh indicate the need to record the measuring site when measuring blood pressure.

  • PDF

Correlations between Obesity and Blood Pressure, Smoking and Drinking Habits (비만지표와 혈압, 음주, 흡연과의 상관관계)

  • Lee, Byeong-Yee;Jang, Gun
    • Journal of Korean Medicine for Obesity Research
    • /
    • v.6 no.2
    • /
    • pp.85-94
    • /
    • 2006
  • Objectives : To examine the correlation between obesity and blood pressure, smoking and drinking (define drinking: do you mean alcohol?) habit in adolescence. Methods : Data collected on 524 subjects from among Kyungwon University students who had participated in a health screening test were reviewed. With the exception of 20 subjects whose health status was deemed to be abnormal based on current illness or results of the health screening test, 504 healthy cases were analysed. We investigated the correlation between obesity as defined by BMI and blood pressure, smoking and drinking habit. Results : 1. The blood pressure of the obese group was high. 2. blood pressure was higher in smokers, and drinking did not influence blood pressure. 3. Smoking had an effect on obesity and drinking had no significant effect on obesity. Conclusions : Obesity is related to blood pressure and smoking habit. Drinking had no significant effect on obesity and blood pressure in this sample.

  • PDF

Automatic blood pressure measurement device using oscillometric method and Korotkoff sounds

  • Wei, Ran;Lim, Young Chul;Im, Jae Joong
    • International journal of advanced smart convergence
    • /
    • v.1 no.2
    • /
    • pp.20-25
    • /
    • 2012
  • The oscillometric method and Korotkoff sound method are the most common ways to measure the blood pressure. A new automatic blood pressure measurement device, which uses both oscillometric method and Korotkoff method, was developed. A pressure sensor was used to obtain cuff pressure and oscillation signal, and a microphone was used to detect Korotkoff sounds. Forty-five measurements from fifteen subjects were used for analysis. Correlation coefficients between the traditional auscultatory method and Korotkoff sound method were 0.9820 and 0.9721 for the systolic and diastolic blood pressure values, respectively. Standard deviations of differences for the systolic and diastolic blood pressure values were 1.3019 and 1.4495, respectively. Correspondingly, correlation coefficients between the traditional auscultatory method and oscillometric method using newly developed algorithm were 0.9651 and 0.9136 for the systolic and diastolic blood pressure values, with the standard deviations of 1.42 and 1.73, respectively. The results showed that the newly developed algorithm for oscillometirc method provide accurate blood pressure values, moreover, Korotkoff sound method using microphone provides even higher accuracy. Therefore, a new automatic device which utilizes both oscillometric method and Korotkoff sound method would provide the accurate and reliable blood pressure values.