• Title/Summary/Keyword: Pulse pressure

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The Association of Pulse Pressure and Pre-Metabolic Syndrome in Korean Middle Aged Men

  • Shin, Kyung-A
    • Biomedical Science Letters
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    • v.23 no.2
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    • pp.73-79
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    • 2017
  • Pulse pressure is an independent risk factor for cardiovascular disease. The aim of the present study was to assess the association between pulse pressure and metabolic syndrome in Korean men. The study subjects were 8,439 adults aged 40 to 64 years, who underwent health screening examination from January 2012 to December 2014 at the Health Promotion Center of one hospital in Gyeonggi-do for general health check-up. They include the metabolic syndrome absent group (Absent, n=3,078), the pre-metabolic syndrome group (Pre-MetS, n=4,242) and the metabolic syndrome group (MetS, n=1,119). Progressive increase in pulse pressure was demonstrated for increasing components of the metabolic syndrome (P<0.001). The pulse pressure according to the degree of the metabolic syndrome was higher in the pre-MetS and MetS groups compared to the Absent group (P<0.001). Systolic and diastolic blood pressure, total cholesterol, triglyceride, fasting glucose, and abdominal obesity positively correlated with pulse pressure (P<0.001).

Prediction of Pulse Pressure and Pulse Interval of Change in Operation Conditions of a Pulse Air Jet Bag Filter (충격기류식 여과집진장치의 운전조건 변화에 따른 적정 탈진주기 및 탈진압력 설정)

  • Lee, Deok-Gi;Lim, Woo-Taik;Cho, Jae-Hwan;Choi, Kum-Chan;Shin, Hyun-Moo;Jang, Seong-Ho;Suh, Jeong-Min
    • Journal of Environmental Science International
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    • v.27 no.6
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    • pp.349-358
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    • 2018
  • In this study, using coke dust from ironwork, the pulse pressure on a pulse air jet bag filter was investigated considering the influence of the pressure loss due to filtration velocity and pressure intervals. The research on the optimal pulse pressure prediction of a pulse air jet type bag filter using coke dust showed the following results. Pressure loss volatility produced by the pulse pressure under low dust concentration(0.5, $1g/m^3$) and low face velocity(1.25 m/min) was less than $10mmH_2O$. This suggests that the pulse pressure has a low impact on the pressure loss. In contrast, pressure loss volatility under high dust concentration($3g/m^3$) and high face velocity(1.75 m/min) was $25mmH_2O$. Therefore, pulse pressure with high dust concentration and high face velocity has a strong influence on the pressure loss volatility, compared to the condition of low dust concentration and low face velocity. The optimal pulse pressure of inlet dust concentration($0.5g/m^3$) was $6kg/cm^2$ under the same face velocity(1.75 m/min). As concentration increased from 1 to $2g/m^3$, the pulse pressure gradually reached $5kg/cm^2$ thus indicating that the pulse pressure($5kg/cm^2$) is pertinent at a high concentration($3g/m^3$). The pulse intervals: 20, 25 and 30 sec, which are relatively longer than 10 and 15 sec, corresponded to high pressure loss volatility produced by the pulse pressure. Furthermore, low pressure loss volatility was noted at $5kg/cm^2$ of the overall pulse pressure.

The Prediction of Optimal Pulse Pressure Drop by Empirical Static Model in a Pulsejet Bag Filter (경험모델을 이용한 충격기류식 여과집진기의 적정 탈진압력 예측)

  • Suh, Jeong-Min;Park, Jeong-Ho;Lim, Woo-Taik;Kang, Jum-Soon;Cho, Jae-Hwan
    • Journal of Environmental Science International
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    • v.21 no.5
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    • pp.613-622
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    • 2012
  • A pilot-scale pulse-jet bagfilter was designed, built and tested for the effects of four operating conditions (filtration velocity, inlet dust concentration, pulse pressure, and pulse interval time) on the total system pressure drop, using coke dust from a steel mill factory. Two models were used to predict the total pressure drop according to the operating conditions. These model parameters were estimated from the 180 experimental data points. The empirical model (EM) with filtration velocity, areal density, inlet dust concentration, pulse interval time and pulse pressure shows the best correlation coefficient (R=0.971) between experimental data and model predictions. The empirical model was used as it showed higher correlation coefficient (R=0.971) compared to that of the Multivariate linear regression(MLR) (R=0.961). The minimum pulse pressure predicted by empirical model (EM) was 5kg/$cm^2$.

Relationship between sleep duration and pulse pressure in Korean adults: Focusing on the data of the 7th National Health and Nutrition Survey (한국 성인의 수면시간과 맥압과의 관련성: 국민건강영양조사 제7기 자료를 중심으로)

  • Jung, Eun-Young
    • Journal of Digital Convergence
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    • v.20 no.4
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    • pp.411-418
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    • 2022
  • The purpose of this study is to investigate the relationship between sleep time and pulse pressure in Korean adults, and the research method used data from the 7th period (2016-2018) of the National Health and Nutrition Examination Survey. Subjects were 5,707 persons aged 20 years or older, and for frequency and percentage continuous data, mean and standard deviation, cross analysis and independent t-test, and stepwise logistic regression analysis for high pulse pressure were performed. SPSS WIN 18.0 version statistical program was used. was used. As a result of the study, the prevalence of hypertension was higher in the overall population (OR=1.344, 95% CI=1.002-1.803) and in women (OR=1.624, 95% CI=1.112-2.371) when sleeping for more than 9 hours compared to less than 6 hours. high, but not significant in males (OR=1.012, 95% CI=0.631-1.550). Therefore, considering the effects of inappropriate sleep time on health, public health education and management are necessary. Further research on the relationship between sleep time and pulse pressure will be needed.

Pressure Drop Predictions Using Multiple Regression Model in Pulse Jet Type Bag Filter Without Venturi (다중회귀모형을 이용한 벤츄리가 없는 충격기류식 여과집진장치 압력손실 예측)

  • Suh, Jeong-Min;Park, Jeong-Ho;Cho, Jae-Hwan;Jin, Kyung-Ho;Jung, Moon-Sub;Yi, Pyong-In;Hong, Sung-Chul;Sivakumar, S.;Choi, Kum-Chan
    • Journal of Environmental Science International
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    • v.23 no.12
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    • pp.2045-2056
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    • 2014
  • In this study, pressure drop was measured in the pulse jet bag filter without venturi on which 16 numbers of filter bags (Ø$140{\times}850{\ell}$) are installed according to operation condition(filtration velocity, inlet dust concentration, pulse pressure, and pulse interval) using coke dust from steel mill. The obtained 180 pressure drop test data were used to predict pressure drop with multiple regression model so that pressure drop data can be used for effective operation condition and as basic data for economical design. The prediction results showed that when filtration velocity was increased by 1%, pressure drop was increased by 2.2% which indicated that filtration velocity among operation condition was attributed on the pressure drop the most. Pressure was dropped by 1.53% when pulse pressure was increased by 1% which also confirmed that pulse pressure was the major factor affecting on the pressure drop next to filtration velocity. Meanwhile, pressure drops were found increased by 0.3% and 0.37%, respectively when inlet dust concentration and pulse interval were increased by 1% implying that the effects of inlet dust concentration and pulse interval were less as compared with those changes of filtration velocity and pulse pressure. Therefore, the larger effect on the pressure drop the pulse jet bag filter was found in the order of filtration velocity($V_f$), pulse pressure($P_p$), inlet dust concentration($C_i$), pulse interval($P_i$). Also, the prediction result of filtration velocity, inlet dust concentration, pulse pressure, and pulse interval which showed the largest effect on the pressure drop indicated that stable operation can be executed with filtration velocity less than 1.5 m/min and inlet dust concentration less than $4g/m^3$. However, it was regarded that pulse pressure and pulse interval need to be adjusted when inlet dust concentration is higher than $4g/m^3$. When filtration velocity and pulse pressure were examined, operation was possible regardless of changes in pulse pressure if filtration velocity was at 1.5 m/min. If filtration velocity was increased to 2 m/min. operation would be possible only when pulse pressure was set at higher than $5.8kgf/cm^2$. Also, the prediction result of pressure drop with filtration velocity and pulse interval showed that operation with pulse interval less than 50 sec. should be carried out under filtration velocity at 1.5 m/min. While, pulse interval should be set at lower than 11 sec. if filtration velocity was set at 2 m/min. Under the conditions of filtration velocity lower than 1 m/min and high pulse pressure higher than $7kgf/cm^2$, though pressure drop would be less, in this case, economic feasibility would be low due to increased in installation and operation cost since scale of dust collection equipment becomes larger and life of filtration bag becomes shortened due to high pulse pressure.

Effects of Chungpyesagan-tang on arterial stiffness and pulse pressure in acute stroke patients (청폐사간탕(淸肺瀉肝湯)이 급성기 중풍환자의 동맥경직도 및 맥압에 미치는 영향)

  • Park, Young-Min;Hong, Jin-Woo;Shin, Won-Jun;Jeong, Dong-Won;Kim, Seok-Min;Bae, Hyung-Sup;Kim, Young-Suk;Moon, Sang-Kwan;Jung, Woo-Sang;Cho, Ki-Hoo
    • The Journal of Internal Korean Medicine
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    • v.27 no.2
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    • pp.416-428
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    • 2006
  • Objectives : Arterial stiffness and pulse pressure are related to cardiovascular and cerebrovascular survival and longevity. This study is aimed at examining the effects of Chungpyesagan-tang on arterial stiffness and Pulse pressure in acute stroke Patients. Methods: The subject of this study was acute strike Patients within 1 week after ictus, with Cardio-ankle vascular index(CAVI) higher than 9.0. They were divided into two groups: A treatment group (n=44) and a control group(n=46). For two weeks, Chungpyesagan-tang was given to the former, other herbal medicines to the latter. used for stroke patients for the control group for 2 weeks. At the end of first and second week, CAVI, pulse Pressure, National Institute of Health stroke scale(NIHSS), Modified Barthel Index(MBI) were measured. Serum lipid Profile, aspartate transaminase(AST), alanine transaminase(ALT). blood urea nitrogen(BUN), creatinine were also measured at the end of the study. Results : After 2 weeks, CAVI and Pulse Pressure in Chungpyesagan-tane group were significantly tower than those in the control group(P<0.05). NIHSS and MBI were improved in both groups. But there was no significant difference between the treatment group and the control group in terms of the NIHSS and MBI. Conclusions : We suggest Chungpyesagan-tanghas desirable effects on arterial stiffness and Pulse Pressure of acute stroke patients. It can improve morbidity and mortality of patients on the basis of influencing vascular stiffness and increased pulse pressure.

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Fusion Research in the Association of Lung Function with Pulse Pressure and Blood Lipid in Adults (성인의 맥압과 혈청지질 및 폐기능의 관계 융합 연구)

  • Jo, Yoon-Kyung;Sung, Hyun-Ho
    • Journal of the Korea Convergence Society
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    • v.9 no.11
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    • pp.203-208
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    • 2018
  • The purpose of this study was to investigate whether there is a relationship between pulmonary function, serum lipid and pulse pressure, which is a risk factor of cardiovascular disease, in subjects with 109 office workers(51 males and 58 females) be at Seoul, Korea. The mean age of the subjects was $43.44{\pm}7.23$ years old (male $43.44{\pm}7.27$, fenale $49.1{\pm}11.5$). The subjects' height, weight, BMI, systolic and diastolic blood pressures were measured and there was statistical difference between men and women.The mean pulse pressure of the subjects was $47.82{\pm}9.02mmHg$, and the mean of FVC was $84.26{\pm}9.91%$. There was no difference between men and women in both. There was a positive correlation between pulse pressure and systolic blood pressure in males (p<0.01) and females (p<0.01), and FVC and HDL in males were positively correlated (p<0.05). Pulse pressure and %FVC were negatively correlated (r =-0.267, P<0.01). Pulse pressure and %FVC were negatively correlated (r =-0.267, P<0.01). Regression analysis showed that PP was the independent affected %FVC. Therefore, pulse pressure and %FVC may be useful as a predictor of cardiovascular disease in middle-aged subjects with normal, suggest a long-term convergence follow-up is warranted to elucidate the incidence of cardiovascular disease.

The Relationship between the Serum Aspartate Aminotransferase/Alanine Aminotransferase Ratio and Pulse Pressure in Korean Adults with Hypertension (대한민국 고혈압 성인에서 아스파르트산 아미노전이효소/알라닌 아미노전이효소 비율과 맥압의 관련성)

  • Yoon, Hyun
    • Korean Journal of Clinical Laboratory Science
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    • v.53 no.3
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    • pp.241-248
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    • 2021
  • The present study was conducted to assess the relationship between aspartate aminotransferase/alanine aminotransferase (AST/ALT) ratio and pulse pressure in Korean adults with hypertension. Data from 1,515 adults from the sixth Korean National Health and Nutrition Examination Survey (KNHANES VI-3, 2015) were analyzed. There were several key findings in the present study. First, aspartate aminotransferase (odds ratio [OR], 1.018; 95% confidence interval [CI], 1.002 to 1.033), alanine aminotransferase (OR, 0.982; 95% CI, 0.969 to 0.996), and aspartate aminotransferase/alanine aminotransferase ratio (OR, 1.367; 95% CI, 1.027 to 1.819) were the independent factors determining high pulse pressure. Second, after adjusting for related variables [age, gender, smoking, alcohol consumption, regular exercise, total cholesterol (TC), triglycerides (TGs), high-density lipoprotein-cholesterol (HDL-C), fasting plasma glucose (FPG), body mass index (BMI), and waist circumference (WC)], the ORs of high pulse pressure with the 1st quartile as a reference were significantly higher in the 4th quartile of aspartate aminotransferase/alanine aminotransferase ratio [1.632 (95% CI, 1.113~2.393)]. The high pulse pressure was positively associated with aspartate aminotransferase and alanine aminotransferase/alanine aminotransferase ratio in Korean adults with hypertension, but was inversely associated with alanine aminotransferase.

Linking Clinical Events in Elderly to In-home Monitoring Sensor Data: A Brief Review and a Pilot Study on Predicting Pulse Pressure

  • Popescu, Mihail;Florea, Elena
    • Journal of Computing Science and Engineering
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    • v.2 no.2
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    • pp.180-199
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    • 2008
  • Technology has had a tremendous impact on our daily lives. Recently, technology and its impact on aging has become an expanding field of inquiry. A major reason for this interest is that the use of technology can help older people who experience deteriorating health to live independently. In this paper we give a brief review of the in-home monitoring technologies for the elderly. In the pilot study, we analyze the possibility of employing the data generated by a continuous, unobtrusive nursing home monitoring system for predicting elevated(abnormal)pulse pressure(PP) in elderly(PP=systolic blood pressure-diastolic blood pressure). Our sensor data capture external information(behavioral) about the resident that is subsequently reflected in the predicted PP. By continuously predicting the possibility of elevated pulse pressure we may alert the nursing staff when some predefined threshold is exceeded. This approach may provide additional blood pressure monitoring for the elderly persons susceptible to blood pressure variations during the time between two nursing visits. We conducted a retrospective pilot study on two residents of the TigerPlace aging in place facility with age over 70, that had blood pressure measured between 100 and 300 times during a period of two years. The pilot study suggested that abnormal pulse pressure can be reasonably well estimated (an area under ROC curve of about 0.75) using apartment bed and motion sensors.

The Association of Urine Microalbumin and Pulse Pressure in Korean Adults (한국 성인에서 뇨 중 Microalbumin과 맥압의 관련성)

  • Gee, Mee Young;Yoon, Hyun
    • Korean Journal of Clinical Laboratory Science
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    • v.48 no.3
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    • pp.183-187
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    • 2016
  • The aim of this study was to assess the association between microalbumin and pulse pressure (PP) in Korean adults. The study subjects were Korean adults 20 years or older (n=4,948) who participated in the Korea National Health and Nutrition Examination Survey 2012. The urine microalbumin level ($M{\pm}SE$) was significantly higher (p=0.047) in the high PP group (PP>60.0 mmHg) [$33.02{\pm}4.93{\mu}g/mL$ (95% confidence interval (CI), 23.37~42.68)] than the normal PP group ($PP{\leq}60.0mmHg$) [$22.57{\pm}1.63{\mu}g/mL$ (95% CI, 19.36~25.77)], after adjusting for age, gender, smoking, drinking, regular exercising, WM, BMI, TC, TG, HDL-C, FBG, BUN, creatinine, and urine creatinine. In conclusion, pulse pressure was associated with the microalbumin level in Korean adults.