• 제목/요약/키워드: Blood Flow Rate

검색결과 489건 처리시간 0.024초

신장 허혈이 토끼 신기능과 lysine 및 alanine 배설에 미치는 영향 (Effect of renal ischemia on renal function and excretion of lysine, alanine in the rabbit)

  • 남윤정;김용근;김주헌
    • 대한수의학회지
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    • 제35권4호
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    • pp.729-733
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    • 1995
  • This study was carried out to determine the effect of renal ischemia on renal function and excretion of amino acid in rabbit. The animal models of renal ischemia induced experimentally by clamping the renal artery for different lengths of time. These results were summarized as follows: 1. Ischemia for 30 or 60 min produced a polyuria which is accompanied by an increase in $Na^+$ excretion. Glomerular filtration rate (GFR) and p-aminohippurate plasma($C_{PAH}$) were not altered by 30 min of ischemia, indicating that transient ischemia results in a marked tubular dysfuction before a reduction in GFR or renal blood flow. 2. Reabsorption of glucose and amino acids such as alanine and lysine was markedly reduced after 30 min of ischemia, and the effect was more pronounced after 60 min of ischemia.

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위완통(胃脘痛)의 치료에 응용되는 삼합탕(三合湯)의 임상적 고찰 -임상예 11예를 중심으로- (Clinical Study on the Samhabtang for the Treatment of Epigastralgia)

  • 원진희
    • 대한한의학회지
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    • 제17권2호
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    • pp.311-317
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    • 1996
  • To complement and develop the treatment of Oriental medicine, I have observed and analysed 11 persons who have undertaken Samhabtang (三合湯) because of the epigastric pain. Considering and analysing the clinical diagnoses, complaints, ages, and so on, I have obtained the conclusion as follows. 1. The main method of treatment is remove obstruction method (通法), because pathogenesis of epigastric pain is obstruction of the flow of ki occurs pain (不通則痛). 2. Chronic epigastric pain is developed by stagnation of ki (氣滯). stagnation of blood (血瘀), deficiency of vital essence (陰虛), pathogenic cold (寒邪). 3. Samhabtang (三合湯) effects on above symptoms, so it may cure chronic epigastric pain. 4. This clinical study of Samhabtang (三合湯) shows 81.8% of effective rate.

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체외순환중 발생한 대량 공기전색에 대한 상공대정맥을 통한 일시적역관류 -치험 2예-

  • 이재성
    • Journal of Chest Surgery
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    • 제19권4호
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    • pp.543-548
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    • 1986
  • Massive air embolism during cardiopulmonary bypass is uncommon but serious and often lethal complication. Following this catastrophic event, the immediate institution of retrograde arterial blood perfusion via superior vena cava was made to remove air emboli from cerebral circulation. This method was performed by removing the arterial perfusion line from aortic cannula and connecting it to superior vena caval cannula. Then, retrograde perfusion at a flow rate of 2Umin via superior vena cava was carried out for 3 minutes. After air returning from the aortic cannula was identified, each line was connected to the cannulae primarily. In 2 cases who had massive air emboli due to air pumping into arterial line, the postoperative complete recovery resulted from this technique, which was used in conjunction with other therapy postoperatively.

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Tc-99m Galactosylated Serum Albumin (GSA)을 이용한 정량적 간수용체 영상술 (Quantitative Evaluation of Liver Function with Hepatic Receptor Scintigraphy using Tc-99m Galactosylated Serum Albumin (GSA))

  • 이재태
    • 대한핵의학회지
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    • 제32권4호
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    • pp.305-313
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    • 1998
  • The reduction in the amount of asialoglycoprotein (ASGP) receptor, which resides exclusively on the plasma membrane of functioning mammalian hepatocytes, as a consequence of hepato-cellular damage has been demonstrated in various pathologic conditions of the liver. Galac-tosylated human serum albumin (GSA) is a newly developed receptor-binding agent, specific for the ASGP receptor. Tc-99m GSA binds quantitatively to liver ASGP receptors and the rate of accumulation in the liver is dependent on hepatic function represented as the amount of receptor, as well as the amount of ligand injected, its affinity to the receptor and the hepatic blood flow. The findings of Tc-99m GSA scintigraphy were reported to reflect the hepatic function of the patients with large hepatic tumors, obstructive jaundice, acute and chronic liver disease. Tc-99m GSA scintigraphy is an easy and reliable test and has the clinical potentials to evaluate the liver function in the patients with hepatic disorders.

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Mathematical description of drug distribution in the isolated organ

  • Kim, Chong-Kook
    • Archives of Pharmacal Research
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    • 제3권1호
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    • pp.13-16
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    • 1980
  • The model of an isolated organ system has been constructed to simulated the behavior of drug in the circulatory system of an acting organ or site. The model is developed on the following assumptions : The drug in the microcirculatory system cannot permeate the capilary walls. The capilary bed is modeled as a simple ideal plug flow system with and without radial concentration gradient. The mathematical model is developed from basic considerations of drug distribution with hemodynamical and pharmacokinetical meanings. It is considered that a nonmetabolic drug substance is injected into the arterial inflow site of an isolated organ at a constant rate. The concentration of the drug in the outflow site is mathematically expressed as a function of time.

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시메티딘과 리팜피신의 상호작용 (Drug interaction of Cimetidine and Rifampicin in normal Human subjects)

  • 문홍섭;최인;최준식;신용준
    • 한국임상약학회지
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    • 제3권1호
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    • pp.1-13
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    • 1993
  • The intraction between cimetidine and rifampicin was studied pharmacokinetically in normal human subjects. The serum level and the area under the serum concentration curve(AUC) of rifampicin administrated orally were elevated significantly by cimetidine. Volume of distribution, total clearance and elimination rate constant of rifampicin were reduced significanyly by cimetidine. Biological half-life of rifampicin was prolonged significantly by cimetidine. The mechanism of this results is probably related to the inhibition of rifampicin metabolism(deacetyl form) or reduction of blood flow in the liver. It is desirable that dosage regimen of rifampicin shoud be adjusted when combined with cimetidine in clinical pharmacy practice.

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생균제 첨가사료가 조피볼락 Sebastes schlegeli의 성장 및 혈액성분에 미치는 영향 (Effects of Dietary Supplement of Probiotics on Growth and Blood Assay of Rockfish Sebastes schlegeli)

  • 박상현;왕순영;한경남
    • 한국양식학회지
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    • 제21권1호
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    • pp.1-6
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    • 2008
  • 조피볼락 Sebastes schlegeli 치어의 성장률 향상을 도모하고 적용할 만한 생균제로서의 그 가능성을 보고자, 평균 체중 0.7 g의 조피볼락 치어에 2종의 유산균을 사료에 첨가하여 본 실험을 수행하였다. 각각의 첨가구는 Lactobacillus brevis 및 Lactobacillus plantarum을 농도별로 실험사료 1 g 중량당 유산균 첨가수준을 $10^4,\;10^6$$10^8$ cfu 수준으로 처리한 첨가구로 하였다. 성장효과에서 L. plantarum을 농도별로 실험사료 1g 중량당 유산균 첨가수준을 $10^8$ cfu 수준으로 처리한 Lp-8 실험구에서 중량 증가 효과가 있었으며, L. brevis의 경우는 첨가효과가 없었다. 실험종료 후, 혈액분석 결과는 hematocrit 28.5-32.5%, hemoglobin 8.3-8.6 g/dl으로 차이는 없었으나, 혈장 내 총 단백질 함량은 Lp-8 실험구에서 높았다. 혈장 내 총 콜레스테롤 함량은 유산균 2종에서 높은 첨가농도 일수록 그 수치가 낮아지는 경향을 보였다. 상기 실험결과로 미루어 볼 때, 수중환경에 서식하는 어류의 장내 정상적인 균주가 아닌 유산균은 개별적 종에 따라 다른 효과를 얻을 수는 있으나, 조피볼락 치어는 L. plantarum을 $10^8$ cfu/g 수준으로 사료 내 첨가하여 성장효과를 거둘 수 있었다.

The Usability Evaluation of Application that is Developed the Dynamic Kidney Phantom System in Nuclear Medicine

  • Kim, Jae-Hyun;Lee, Juyoung;Park, Hoon-Hee
    • 대한디지털의료영상학회논문지
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    • 제16권2호
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    • pp.15-24
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    • 2014
  • Currently commercially available phantom can reproduce and evaluate only a static situation, the study is incomplete research on phantom and system which is can confirmed functional situation in the kidney by time through dynamic phantom and blood flow velocity, various difference according to the amount of radioactive. Therefore, through this study, it has produced the dynamic kidney phantom to reproduce images through the dynamic flow of the kidney, it desires to evaluate the usefulness of nuclear medicine imaging. The production of the kidney phantom was fabricated based on the normal adult kidney, in order to reproduce the dynamic situation based on the fabricated kidney phantom, in this study it was applied the volume pump that can adjust the speed of blood flow, so it can be integrated continuously radioactive isotopes in the kidney by using 99mTc-pertechnate. Used the radioactive isotope was supplied through the two pump. It was confirmed the changes according to the infusion rate, radioactive isotopes and the different injection speeds on the left and right, analysis of the acquired images was done by drawn five times ROI in order to check the reproducibility of each on the front and rear of the kidney and bladder. Depending on the speed of injection, radioisotope was a lot of integrated and emissions up when adjusting the pressure of the pump as 30 stroke, it was the least integrated and emissions up when adjusting as 40 stroke. The integration of the left & right kidney was not reached in the amount of the highest when adjusting as 10 stroke. In the changes according to the amount of the radioactive isotope, 0.6 mCi(22.2 MBq), 0.8 mCi (29.6 MBq)was showed up similar tendency but, in the result of the injection 0.8 mCi, it was showed up counts close to double of 0.6 mCi. In the result of the differently injection speed of the left & right kidney, as a result of different conditions that injection speed was 20 stroke through left kidney phantom, the injection speed was 30 stroke through right kidney phantom, it was enough difference in the resulting image can be easily distinguished with the naked eye. Through this study, the results showed that the dynamic kidney phantom system is able to similarly reproduce renogram in the actual clinical. Especially, the depicted over time for the flow to be excreted through the kidney into the bladder was adequately reproduce, it is expected to be utilized as basic data to check the quality of the dynamic images. In addition, it is considered to help in the field of functional imaging and quality control.

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관상 동정맥루의 외과적 치험 (Surgical Treatment of 25 Patients with Congenital Coronary Arteriovenous Fistula)

  • 박종호;노준량
    • Journal of Chest Surgery
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    • 제25권12호
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    • pp.1563-1569
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    • 1992
  • From Jan. 1981 to Dec. 1991, we had treated 25 patients with congenital coronary art-eriovenous fistulas [CAVF] in Seoul National University Hospital. A retrospective review was made to delineate the course and the management of CAVF and to clarify the role of surgical treatment. Fifteen patients were male and 10 were female with The mean age of 17.4 years[from 3 months to 58 years]. The most frequent symptom was dyspnea on exertion[56%]. Other symptoms were angina and palpitation. Sixty-eight percent of the patients were symptomatic. Fifty-three percent of patients less than 20 years old were symptomatic and 100% of patients over 20 years old were symptomatic. Three patients had multiple CAVFs. The fistula drained into the right ventricle in 13, pulmonary artery in 9, left ventricle in 4, right atrium in 2, and left atrium in 1. Thirteen patients had other associated cardiac lesions. The mean pulmonary-to-systemic blood flow[Qp /Qs] in the isolate CAVF group was 2.19. All patients were operated on to correct the fistulas and other associated cardiac lesions. All patients were followed from 1 month to 11 years without late death. Postoperative complication rate was 24% -significant arrhythmia [3], recurred CAVF[1], psychosis[1], pneumonia [1]. Symptomatic improvement was evident postoperatively. Below 20 years old, 94% of patients were asymptomatic, but above 20 years old, symptoms persisted in 25%. In summary, early elective repair of CAVF is indicated in all patients because of higher complication rate and frequent persistent symptoms in older patients.

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성인 환자의 산림치유 프로그램에 대한 체계적 문헌 고찰 (Systematic Review of Forest Therapy Program for Adult Patients with Diseases)

  • 채영란;이선희
    • Journal of Korean Biological Nursing Science
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    • 제22권3호
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    • pp.157-171
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    • 2020
  • Purpose: The purpose of this study was to analyze the characteristics and effects of the forest therapy programs for adult patients. Methods: Six databases (PubMed, Cochrane library, CiNii, PsychoInFO, AGRICOL, EMBASE) and six domestic databases were systematically searched with language restrictions of Korean, English, and Japanese. The systematic review was based on the Preferred Reporting Items Systematic Reviews and Meta-Analysis (PRISMA) flow diagram. Results: Twenty five studies met the inclusion criteria. A systematic review identified adult patients classified as 1) disease of the circulatory system, 2) mental and behavioral disorders, 3) malignant neoplasms, 4) etc. (diabetes mellitus, chronic pain). This integrative review showed a positive effect of the forest therapy program for adult patients on physiological indices such as blood pressure, heart rate, heart rate variability, level of stress hormone, and natural killer cells as well as social·psychological indices such as the Profile of Mood States (POMS), anxiety, depression, and quality of life. Conclusion: The results of this study could be useful key principles in developing and applying the forest therapy programs in nursing intervention. Further research should be conducted to develop the forest therapy programs suitable for each patient group and measure its effectiveness.