• 제목/요약/키워드: external heart

검색결과 185건 처리시간 0.023초

심장기능(心臟機能)에 미치는 Bicarbonate-Buffer의 중요성(重要性) : Buffer 제거(除去)에 의(依)한 유리심방(遊離心房)의 수축성(收縮性), 막전위(膜電位) 및 ATP 함량(含量)의 변동(變動) (THE IMPORTANCE OF BICARBONATE-BUFFER ON CARDIAC FUNCTION: Contractility, Membrane Potentials and ATP Content of Isolated Atria in the Absence of External Buffers)

  • 고계창;한대섭;정지창
    • 대한약리학회지
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    • 제8권2호
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    • pp.63-69
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    • 1972
  • The effects of omission of buffers from Krebs-Ringer medium on contractile activity, membrane potentials and ATP content of electrically stimulated isolated rat atria were investigated. 1) Contractile status: A rapid and marked depression of the contractile activity of atria occurred when buffer-free medium was substituted for the normal Krebs-Ringer medium. 2) Electrical status: The omission of buffers from medium did not alter the resting or action potential magnitudes of atria. However, the action potential duration was on initial increase followed by a decrease in the buffer-free medium. 3) ATP concentration: The omission of buffers from medium resulted in a marked decrease in the ATP levels of atria. It has been also found in the present study that bicarbonate buffer plays an important role for the maintenance of the contractility and ATP levels of the heart. The contractile depression by the omission of buffers was not directly associated with electrical alterations in resting or action potentials of the heart. In the absence of bicarbonate-buffer, glucose no longer plays to maintain the contractile activity and the ATP levels of rat atria.

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히스타민이 혈류역학 및 심전도에 미치는 영향에 관한 연구 (Effects of Histamine on Hemodynamic Parameters and EKG in Dogs)

  • 안승운;김기환;엄융의
    • The Korean Journal of Physiology
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    • 제9권1호
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    • pp.39-43
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    • 1975
  • The effects of histamine on cardiovascular system in 6 dogs were analyzed. Mongrel dogs, 10 to 16 kg in body weight, were anesthetized with Nembutal (30 mg/kg) and arterial blood pressure, heart rate, central venous pressure, electrocardiogram were recorded and measured plasma potassium concentration. Histamine $(100{\mu}g/ml)$ was infused slowly at the rate of 0.25 ml/min through the external jugular vein until BP was 80/60 and maintained restored BP for more than 5 min. The process repeated $4{\sim}5$ times. At each time before and after infusion every items were recorded and measured. 1. Arterial blood pressure was 142/105 (mean 117) mmHg in control and decreased to 90/60 68) after histamine infusion. 2. Heart rate changed from 175 beat/min to 150 and central venous pressure from 6.2 to 5.2 cm $H_2O$. 3. Plasma potassium concentration was 4.3 mEq/L and slightly increased to 4.7 mEq/L but it was not significant statistically. 4. Most characteristic changes revealed in EKG especially in T-waves. Height, Width, Steepness, and Slimness were increased $1.5{\sim}3.7$ times than control level and Pointedness decresed 0.5 times than before.

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섬피(蟾皮)에 대(對)한 고찰(考察) (The Study on Bufobufo gargarizns Cantor)

  • 김재용;조종관
    • 혜화의학회지
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    • 제10권1호
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    • pp.115-120
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    • 2001
  • We came to the conclusion after considering all of information from many kinds of books on the Bufobufo gargarizans Cantor. The result were as follows: 1. Bufobufo gargarizans Cantor is originated from the bufonidae of caudata of amphibia of chordata. 2. The form of Bufobufo gargarizans Cantor is obese, about 12 centimeter long and the color of Bufobufo gargarizans Cantor is dark brown, black. 3. The charateristics and the tastes of Bufobufo gargarizans Cantor is cold and spicy and the Guigyung of Bufobufo gargarizans Cantor is heart and stomach. 4. The significant gredient of Bufobufo gargarizans Cantor is Bufagin, Steroids, Cinobufotoxin, ${\beta}$-sitosterol, Bufothionine, Bufotenidine, Bufo tenine, Bufalin, Butotalidin Hellebrigenin, Bufochrome. 5. The efficacy of Bufobufo gargarizans Cantor is pajinggyunhyul(破懲堅血), salgamjok(殺疳積), taehuyol(退虛熱), etc. 6. In direction of Bufobufo gargarizans Cantor, one time dosage is 2-3 gram in internal medicine, in external medicine dosage depends on the width. 7. Bufobufo gargarizans Cantor should be cautious in use those who is pregnant, have heart disease, gastritis, gastric ulcer. 8. The side effect of Bufobufo gargarizans Cantor is nausea, vomiting, abdomen discomfort, diarrhea, palpitation, headache, lethargy, etc. 9. Bufobufo gargarizans Cantor could be use in hepatoma, esophgeal cancer, stomach cancer, skin cancer, breast cancer and leukemia.

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Anatomical study to determine a new approach to treat benign masses located in the anterior condyle region: a case report

  • Sin Guen Kim;Sung Chul Bok;Suk In Choi;Jun Woo Park;Dong Ju Choi
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • 제50권2호
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    • pp.110-115
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    • 2024
  • A 22-year-old male patient presented to the clinic with severe pain in the preauricular area with an inability to completely occlude the jaw. Facial computed tomography and magnetic resonance imaging revealed a well-defined lesion that was tentatively diagnosed as a benign tumor or cystic mass. Surgical approach of a lesion in the condyle is delicate and problematic as many vulnerable anatomical structures are present. There are several methods for surgery in this area. Typically, an extraoral approach is dangerous because of potential injuries to nerves and arteries. The intraoral approach also presents difficulties due to the lack of visibility and accessibility. On occasion, coronoidectomy may be performed. The goal here was to determine an easier and safer new surgical approach to the condyle. We reached the anterior part of the pterygoid plate in the same method as in Le Fort I surgery. From this point, through the external pterygoid muscle, approaching the anterior aspect of the condyle is relatively easy and safe, with minimal damage to the surrounding tissues. Pus was drained at the site, and the lesion was diagnosed as an abscess. Pain and inability to close the mouth resolved without recurrence.

스마트폰의 CMOS 영상센서를 이용한 광용적맥파 측정방법 개발 (Development of a Photoplethysmographic method using a CMOS image sensor for Smartphone)

  • 김호철;정원식;이권희;남기창
    • 한국산학기술학회논문지
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    • 제16권6호
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    • pp.4021-4030
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    • 2015
  • 맥파는 심전도와 같이 자율신경계를 통해 생리적 반응을 측정하는 신호이지만, 손가락에 센서 하나만 부착시키면 되기 때문에 상대적으로 신호의 측정이 간편하다는 장점을 가지고 있어 u-Healthcare 분야에서의 활용이 용이하다. 따라서 본 연구의 목적은 스마트폰 카메라의 CMOS 영상 센서를 활용하여 맥파를 비침습적으로 측정하는 방법 중의 하나인 광용적맥파를 획득하고 이로부터 스트레스 여부를 판단하는 휴대형 시스템을 개발하여 u-Healthcare 분야에서의 활용 가능성을 확인하는 것이다. 이를 위해 광용적맥파를 별도의 센서에 의한 측정이 아닌 스마트폰 카메라에서 획득되는 영상 데이터를 활용하여 광용적맥파를 획득한 후 분석하였다. 또한 확보된 광용적맥파 영상신호 데이터를 이용하여 심박변이도와 스트레스 지수를 별도의 호스트 장비 없이 스마트폰만을 이용해 사용자에게 제공 하였다. 또한 부가적으로 스마트폰에 부착가능한 별도의 하드웨어 디바이스를 개발함으로써 획득된 데이터의 신뢰도 및 정확성을 향상시켰다. 실험결과를 통해 스마트폰의 카메라 영상을 활용하여 광용적맥파 신호를 통한 심박수 측정과 스트레스의 정도를 분석하기 위한 스트레스 지수 추출이 가능함을 확인할 수 있었다. 본 연구에서는 상용화된 제품 또는 정형화된 센서가 아닌 스마트폰의 카메라를 이용하기 때문에 상용화된 외부 센서에 의한 광용적맥파 신호보다는 해상도가 떨어지는 단점이 있음에도 불구하고 결과 데이터의 신뢰도 향상을 위한 별도의 추가외부 장치 개발 및 여러 가지 최적화 알고리즘을 통해 신뢰성 있는 데이터를 확보할 수 있어 u-Healthcare 장비로써의 활용 가능성을 확인할 수 있었다.

"변증록(辨證錄)" 권지이(卷之二)의 중풍(中風), 비증(痹證), 심통(心痛), 협통(脇痛), 두통(頭痛), 복통(腹痛), 요통(腰痛)에 대(對)한 연구(硏究) (A Study on wind stroke, impediment disease, heart pain, side pain, headache, abdominal pain, lumbago in the "Byun Jeung Rok(辨證錄)" vol.II)

  • 이귀인;박동석;금경수
    • 대한한의정보학회지
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    • 제16권2호
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    • pp.89-161
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    • 2010
  • "Byun Jeung Rok(辨證錄)" is composed of 14 volumes. In relation to the contents, it is organized into 126 gates(門) and 700 remaining syndromes(餘證) where internal medicine, external medicine, pediatrics, gynecology(內科 外科 小兒 婦人), etc. are divided into sub-sections of cold damage, cold stroke, wind stroke(傷寒 中寒 中風), etc. For every syndrome, the symptom, cause of disease, method of treatment, prescription, construction of prescription, instruction of medicine and prognosis.(症狀 病因 治法 處方 處方構成 服用法 預後) were explained thoroughly. This study, as an inquiry of the second volume, deals with wind stroke(中風), impediment disease(痹證), heart pain(心痛), side pain(脇痛), headache(頭痛), abdominal pain(腹痛), lumbago(腰痛) It was written very logically so it is easy to understand. The analysis of the symptoms are brief and appropriate. Also, in the usage of the medicine, the sovereign, minister, assistant and courier(君臣佐使) method was used as the basis for the prescriptions. Therefore, it is considered to have significant clinical value for future generations and is thus being applied by them.

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金元四大家의 眼病治療法에 關한 文獻的 硏究 (A Literature Study on Ophthalmologic Disease Remedies of the four Famous Physicians in JinYuan Period)

  • 김성배;김종한;임규상
    • 한방안이비인후피부과학회지
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    • 제7권1호
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    • pp.15-34
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    • 1994
  • This is a literature Study on ophthalmologic disease remedies of the four famous physicians in Jin Yuan period. The results were as follows: 1. Yu Wan So regarded the cause of ophthalmologic disease as the wind and heat(風熱), the blood deficiency(血少), or the deficiency of vital function and essence ,of the kidney(腎氣虛). For each treatment he used the method to remove wind and heat(除風散熱), the tranquillizing and tonifying method to nourish the heart and to relieve mental strain due to dificiency of vital essence(養血安神). the method to nourish Yin in the kidney(補腎水). The important nature of the these medicines is bitter and cold. 2. Jang Jong Jeung regarded the cause of ophthalmologic disease as the blood excess(血太過). or the blood deficiency(血不及). or the fire and heat(火熱). For each treatment he used the method to extract blood(出血療法). the method to nourish the liver and the kidney(補肝腎療法). or the method of vomiting and diarrhea(吐不法). The medicines are usuallly classified into external treatment medicines(外用藥). medicines to disintegrate mass(破積聚藥). purgating medicines(攻下藥). 3. Lee Dong Won regarded the cause of ophthalmologic disease as the spleen and the stomach weakness(脾胃虛弱), excessive fire in the heart(心火太盛). For each treatment he used the method to tranquillize the spleen and the stomach (調理脾胃). the tranquillizing and tonifying method to nourish the heart and to relieve mental strain due to deficiency of vital essence(養血安神). 4. Ju Dan Gye regarded the cause of ophthalmologic disease as the wind and heat(風熱). the blood deficiency(血少). the mental exhaustion(神勞). the kidney weakness(腎弱). For each treatment he used the method to remove wind and heat(除風散熱), the method to nourish blood and yin water(養血補水), the method to relieve mental strain and to remove spiritual heat(安腎瀉神火). the method to nourish yin water(養陰水). These drugs are usually classified into the medicines to remove endogenous heat(淸熱藥). the medicines to nourish yin(補陰藥).

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An Analysis of Stress Pattern in the Coracoclavicular Ligaments with Scapular Movements: A Cadaveric Study Using Finite Element Model

  • Kim, Yoon Sang;Kim, In-Sung;Yoo, Yon-Sik;Jang, Seong-Wook;Yang, Cheol-Jung
    • Clinics in Shoulder and Elbow
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    • 제18권3호
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    • pp.152-158
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    • 2015
  • Background: Acromioclavicular (AC) stability is maintained through a complex combination of soft-tissue restraints that include coracoclavicular (CC), AC ligament and overlying muscles. Among these structures, the role of the CC ligament has continued to be studied because of its importance on shoulder kinematics, especially after AC injury. This study was designed to determine the geometric change of conoid and trapezoid ligaments and resulting stresses on these ligaments according to various scapular motions. Methods: The scapuloclavicular (SC) complex was isolated from a fresh-frozen cadaver by removing all soft tissues except the AC and CC ligaments. The anatomically aligned SC complex was then scanned with a high-resolution computed tomography scanner into 0.6- mm slices. The Finite element model of the SC complex was obtained and used for calculating the stress on different parts of the CC ligaments with simulated movements of the scapula. Results: Average stress on the conoid ligament during anterior tilt, internal rotation, and scapular protraction was higher, whereas the stress on the trapezoid ligament was more prominent during posterior tilt, external rotation, and retraction. Conclusions: We conclude that CC ligament plays an integral role in regulating horizontal SC motion as well as complex motions indicated by increased stress over the ligament with an incremental scapular position change. The conoid ligament is the key structure restraining scapular protraction that might occur in high-grade AC dislocation. Hence in CC ligament reconstructions involving only single bundle, every attempt must be made to reconstruct conoid part of CC ligament as anatomically as possible.

완전이식 인공심장용 무선정보 전송장치의 개발 (Development of A Biotelemetry System for A Totally Implantable Artificial Heart)

  • 최원우;강동우;박성근;최재순;김희찬;민병구
    • 전자공학회논문지B
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    • 제33B권1호
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    • pp.57-66
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    • 1996
  • 본 연구에서는 체내에 이식되는 인공심장 및 제어시스템과 체외의 환자관리시스템간의 정보교환을 위한 무선 통신시스템(Biotelemetry System)을 개발하였다. 일반적으로 무선 telemetry라고 하면 전파 telemetry를 의미할 정도로 전파를 이용한 방식이 보편화되어 있으나, 늘어나는 전파무선기기에 의한 전파장해 및 간섭현상과 무엇보다 인체에 유해한 단점으로 의료용 장비에의 응용에는 부적합하다, 따라서 본 논문에서는 최근 빛을 이용한 무선telemetry에 대한 연구결과를 응용하여 피부투과성이 좋은 근적외광(Infra Red Light)을 이용한 광통신 방식으로 인공심장용 무선정보 전달장치를 구현하였다. 개발된 시스템의 성능은 인공 심장용 모의순환실험을 통해 평가되었으며 아울러 동물실험에서의 성능평가로 임상에의 응용가능성을 확인하였다.

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점혈기공요법(點穴氣功療法)을 통해 본 수기요법(手氣療法)의 문헌적(文獻的) 연구(硏究) (Observed through the stories of herbal remedies Jeom-hyeol-gigong, philological research of Su-gi therapy)

  • 김인창;서윤희
    • 대한의료기공학회지
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    • 제11권1호
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    • pp.236-261
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    • 2009
  • 'Jeom-hyeol-gigong(點穴氣功)' gives a drill, Gi(氣) as a place to jam. This pathogen(邪氣) is removed. Given the low places and supplement it energy to flow up the well is the cure. This is an internal organ and muscular Gi allows a natural flow. Blood, one that moves and guides Gi is Gi I still feel that it makes any blood, making you feel good in life is flowing with vitality. Gi driving our whole body, while supplying vital energy and blood circulation, helping to defend the body is functioning. 'Jeom-hyeol-gigong' principle of Gi where the blockages to flow naturally energy is to let the flow. Aura of the voluntary and proactive action will be to have healthy bodies. Gi as a whole-body blood circulation leading to the cells in each tissue to supply energy and nutrients to every cell as the original principles of free activities that will maximize your life. Gi to prevent the three causes Internal causes: 5 greed and 7 emotions External causes: climate, food, pathogens, stress, etc. The internal nor the external causes: internal and external factors that cause the complex elements, incorrect position of the bone caused by an imbalance Heart disease will be police officers and raise their resistance to disease than the body, what jung-gi(正氣) have to develop. Beneficial to human body's resistance to raise the jung-gi people young-gi(營氣) and wi-gi(衛氣) should be enhanced. If the form is perfectly possible, Gi cycle itself should not have to breathe. Abdominal diagnosis 'bok-su-ap-an-beop(伏手壓按法)', 'sam-ji-tam-an-beop(三指探按法)' hands are like this, which outlined five viscera in order to understand the problem, the lower side of the clavicle (lung), the pit of stomach (Heart), both the lower ribs (liver), navel below (kidney) can be diagnosed at such areas. In each area of the skin, abdominal muscle tension, aching, or pressing a fuss about, beating the ruling of the state and the problem is a clue. And mo-hyeol(募穴) and certain Acupressure group, the chest, back, belly, so that scattered around each' book 'of the problem can be found. This is also the target of such a diagnosis, such as shape, color of skin, muscle Mostly the scope of the pitch in the cervical spine is broad across the hips. sugi(手氣) method that 'an method(按法) and 'ma method(摩法), bak method(拍法) is.