• Proceedings of the Korean Society of Life Science Conference
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• 2008.10a
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• pp.35-35
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• 2008

• Journal of Korean Biological Nursing Science
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• v.14 no.1
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• pp.41-48
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• 2012

Purpose: This experimental research explored the effects of aroma inhalation on blood pressure, pulse, sleep, stress, and anxiety in patients with essential hypertension who are taking antihypertensive medication. Methods: A pilot survey, pre-test and post-test were conducted. The data were collected from August to October, 2009. The participants were 44 patients randomly assigned to an experimental group (22 people) and a control group (22 people). The experimental group received individual instruction for aroma inhalation, which lasted for 3 minutes. They inhaled blended oils of Lavender, Majoram and Ylang Ylang (The mixed ratio was 4:3:3), three times a day, for two weeks. Data from 36 patients were used for the final analysis (20 from the experimental group, 16 from the control group). Data were analyzed using SPSS version 13.0. Results: Sleep disturbance decreased in the experimental group (t=-2.258, $p$=.030). Blood pressure, pulse, stress, and anxiety were not significantly different between the two groups ($p$ >.05). Additional analysis of the experimental group showed that physical stress and psychological stress were significantly lowered. Conclusion: Aroma inhalation is an effective paramedical intervention for patients with essential hypertension.

• Journal of Korean Biological Nursing Science
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• v.13 no.2
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• pp.149-155
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• 2011

Purpose: The purpose of this research is to examine types of music (relax music or preferred music that patients have chosen) can effects on anxiety, blood pressure and pulse, and whether there are differences depending on the kinds of music in order to reduce anxiety of surgical patients using spinal anesthesia. Methods: This research's design is quasi-experimental design and non-equivalent control group pretest-posttest experimental design conducted on 60 surgical patients(experimental group 1=relax music therapy group, experimental group 2=preferred music therapy group, and group 3=control group) using spinal anesthesia. The Variables were trait anxiety, state anxiety, blood pressure, and pulse. Results: 1) In the state anxiety, there was a significant difference among the experimental groups 1, group 2 and the control group. 2) There was a significant difference in systolic blood pressure among the experimental group 1, group 2, and the control group. 3) In pulse, no significant difference among the experimental group 1, group 2 and the control group was detected. Conclusion: Regardless of the types of music, music therapy is thought to be effective nursing mediation to mitigate the state anxiety of surgical patients undergoing spinal anesthesia.

• Women's Health Nursing
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• v.6 no.4
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• pp.579-593
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• 2000

The purpose of this study was to examine the effects of foot massage on anxiety response in preoperative patients undergoing total hysterectomy. Among the fifty patients, twenty-five were the experimental group receiving foot massage for 10-minutes and twenty-five were the control group. Subjects were admitted to a hospital in Inchon city for total hysterectomy. This study was carried out from July 10th, to September 18th, 2000. The levels of anxiety were measured by the Visual Aanalogue Scale(VAS). State Anxiety Scale, blood pressure, pulse rate and respiration rate. Data were analyzed using $x^2$-test, t-test, paired t-test, unpaired t-test and ANCOVA with SPSS/pc program. The results were summarized as followings: 1. After foot massage, VAS anxiety level, state anxiety level, systolic blood pressure, pulse rate and respiration rate of the experimental group were decreased significantly than those measurements before the foot massage. 2. After foot massage, significant differences in the VAS anxiety level, state anxiety level, systolic blood pressure, pulse and respiration rate between the experimental and control groups were found. In conclusion, foot massage for 10 minutes is a useful nursing intervention that decreases anxiety in preoperative patients undergoing total hysterectomy.

• Korean Journal of Clinical Laboratory Science
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• v.46 no.4
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• pp.143-149
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• 2014

Pulse wave velocity (PWV) is used to non-invasively estimate the severity of arteriosclerosis by measuring the patient's arterial stiffness comparing with each normal reference range according to their ages. Increased arterial stiffness is closely related to both atherosclerosis and arteriosclerosis, which have been known for causes of cardiovascular disease and stroke, also negatively affects the prognosis and the re-occurrence in patients with stroke. The study is focused on how brachial-ankle pulse wave velocity (baPWV) is related to cardiovascular disease risk factors in patients with acute stroke. There were 114 subjects, 69 males and 45 females, all in their 60's and had PWV test for acute stroke. The results are as follows: the group with increased arterial stiffness showed significant increase in HbAlc, total cholesterol, RSBP (resting systolic blood pressure), CSBP (central systolic blood pressure) and CDBP (central diastolic blood pressure). Cross tabulation test showed that there was a significant relationship only between the group with increased arterial stiffness and diabetes mellitus (DM). Therefore, it might be useful for preventing re-occurrence and making a favorable prognosis to promptly adjust DM and hypertension-related risk factors in patients with acute stroke.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.25 no.4
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• pp.250-258
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• 2018

Purpose: This study was done to assess the influence of application time of Lidocaine patch on pain intensity following venipuncture in hospital. Methods: The participants were 31 adult patients admitted to J hospital in G city. Patients' anxiety, blood pressure and pulse were measured when no patch was applied and when a patch was applied. To evaluate the pain intensity and physiological index caused by venipuncture, blood pressure, pulse and pain intensity were checked for patients in the no patch group, and for a 5 minutes of application and 30 minutes application patch. Pain was evaluated using a visual analogue scale, anxiety using the Profile of Mood states developed McNair et al. and modified by Lee. Data were analyzed using one-way repeated measures ANOVA with the SPSS 21.0 program. Results: Anxiety and pain were significantly reduced when a lidocaine patch was applied following venipuncture. There was no significant difference in pain intensity whether the lidocaine patch application is for 30 minutes or application for 5 minutes. Conclusion: Results of this study show that application of lidocaine patch can be used as a nursing intervention for pain reduction by showing that there is no need to wait a long time for pain to be reduced.

• Advances in materials Research
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• v.13 no.1
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• pp.1-18
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• 2024

The present experimental investigation focuses on finding optimal parametric data-set of laser micro-drilling operation with minimum taper and Heat-affected zone during laser micro-drilling of Carbon Nanotube/Epoxy-based composite materials. Experiments have been conducted as per Box-Behnken design (BBD) techniques considering cutting speed, lamp current, pulse frequency and air pressure as input process parameters. Then, the relationship between control parameters and output responses is developed using second-order nonlinear regression models. The analysis of variance test has also been performed to check the adequacy of the developed mathematical model. Using the Response Surface Methodology (RSM) and an Accelerated particle swarm optimization (APSO) technique, optimum process parameters are evaluated and compared. Moreover, confirmation tests are conducted with the optimal parameter settings obtained from RSM and APSO and improvement in performance parameter is noticed in each case. The optimal process parameter setting obtained from predictive RSM based APSO techniques are speed=150 (m/s), current=22 (amp), pulse frequency (3 kHz), Air pressure (1 kg/cm²) for Taper and speed=150 (m/s), current=22 (amp), pulse frequency (3 kHz), air pressure (3 kg/cm²) for HAZ. From the confirmatory experimental result, it is observed that the APSO metaheuristic algorithm performs efficiently for optimizing the responses during laser micro-drilling process of nanocomposites both in individual and multi-objective optimization.

• Proceedings of the KIEE Conference
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• 1989.07a
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• pp.625-628
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• 1989

광섬유와 micro변형기를 이용하여 다점 압력 계측 system을 구성하여 실험을 행하였다. 그 결과 pulse generator와 analog switch를 이용함으로써 100ns의 광 pulse를 쉽게 얻을 수 있었으며, 또한 3개의 광 pulse를 analog switch를 이용하여 쉽게 분리할 수 있었다. 한편 변형기에 가한 힘과 광 손실간의 상관관계를 이론치와 비교하여 조사한 결과 힘과 광손실간의 상관관계는 이론치와 실험치가 유사한 경향을 나타내는 것을 알 수 있었다.

• The Transactions of the Korean Institute of Electrical Engineers C
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• v.52 no.12
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• pp.568-572
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• 2003

A longitudinal discharge heated copper vapor laser with internal diameter 28 mm and discharge length 1.3 m has been constructed and tested. At the discharging voltage 15.2 kV, pulse repetition rate 10 kHz, buffer gas pressure 40 mbar, and internal temperature of the laser plasma tube $1520^{\circ}C$, it delivers more than 30 W average laser outputs.

• 한국노년학
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• v.32 no.3
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• pp.689-701
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• 2012

The purposes of this study were to identify the changes of postprandial blood pressure and pulse rates of elderly living in nursing homes by time and position after a meal. Blood pressure and pulse rates of 141 elderly aged over 65 years were measured at before the meal to 90 minutes after the meal by 15 min. interval. Data were analyzed by descriptive statistics, repeated measures of ANOVA, ANCOVA, and t-test using the SPSS program. There were no significant differences in change of systolic blood pressure and pulse rates by time between sitting group and lying group after meal. The biggest drops in systolic pressure in sitting and lying position were occurred at 30 min and 45min respectively after the meal. There were no significant change in pulse rates except for the immediately after meal in lying position. To prevent complications of postprandial blood pressure reduction, nurses should carefully monitor blood pressure of elderly in lying position at least from 30 min. till to 90 min. after the meal.