• Tuberculosis and Respiratory Diseases
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• 제57권6호
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• pp.594-598
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• 2004

원발성 반지세포 폐암종은 점액을 분비하는 독특한 선암의 일종으로 매우 드물게 발생한다. 예후가 불량하므로 타 원발성 및 전이성 폐암종과 감별이 필요하고 임상적인 검사로 원발병소를 찾기가 어려울 경우 조직면역학적 방법이 감별에 도움이 된다. 본 저자들은 다발전 골전이를 동반한 진행된 원발성 반지세포 폐암종의 증례를 문헌고찰과 함께 보고하는 바이다.

• 한국운동역학회지
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• 제26권1호
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• pp.11-20
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• 2016

Objective: This study aimed to compare biomechanical data between elite and beginner cyclists during cycle pedaling by performing a comparative analysis and to provide quantitative data for both pedaling performance enhancement and injury prevention. Methods: The subjects of this study included 5 elite cyclists (age: $18{\pm}0years$, body mass: $64.8{\pm}9.52kg$, height: $173.0{\pm}4.80cm$) and 5 amateur cyclists (age: $20{\pm}0years$, mass: $66.6{\pm}2.36kg$, height: $175.6{\pm}1.95cm$). The subjects pedaled on a stationary bicycle mounted on rollers of the same gear (front: 50 T and rear: 17 T = 2.94) and cadence of 90. The saddle height was adjusted to fit the body of each subject, and all the subjects wore shoes with cleats. In order to obtain kinematic data, 4 cameras (GR-HD1KR, JVC, Japan) were installed and set at 60 frames/sec. An electromyography (EMG) system (Telemyo 2400T, Noraxon, USA) was used to measure muscle activation. Eight sets of data from both the left and right lower extremities were obtained from 4 muscles (vastus medialis oblique [VMO], vastus lateralis oblique [VLO], and semitendinosus [Semitend], and lateral gastrocnemius [Gastro]) bilaterally by using a sampling frequency of 1,500 Hz. Five sets of events ($0^{\circ}$, $90^{\circ}$, $180^{\circ}$, $270^{\circ}$, and $360^{\circ}$) and 4 phases (P1, P2, P3, and P4) were set up for the data analysis. Imaging data were analyzed for kinematic factors by using the Kwon3D XP computer software (Visol, Korea). MyoResearch XP Master Edition (Noraxon) was used for filtering and processing EMG signals. Results: The angular velocity at $360^{\circ}$ from the feet was higher in the amateur cyclists, but accelerations at $90^{\circ}$ and $180^{\circ}$ were higher in the elite cyclists. The amateur cyclists had greater joint angles at $270^{\circ}$ from the ankle and wider knee joint distance at $0^{\circ}$, $180^{\circ}$, and $360^{\circ}$ than the elite cyclists. The EMG measurements showed significant differences between P2 and P4 from both the right VLO and Semitend. Conclusion: This study showed that lower body movements appeared to be different according to the level of cycle pedaling experience. This finding may be used to improve pedaling performance and prevent injuries among cyclists.

• The Korean Journal of Pain
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• 제1권2호
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• pp.192-198
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• 1988

Sixty patients, of ASA physical status class I for elective operations in the lower abdomen, perineum, or lower extremities, were studied in a comparative prospective trial to evaluate the efficacy of epidural morphine and ketamine for postoperative analgesia. They were divided into two groups: an epidural morphine sulfate group (EMS group; 30 patients), and an epidural ketamine hydrochloride group (EKH group; 30 patients). Indwelling epidural catheters were placed in the patients' lumber areas (L3-4) and then all patients were anesthetized with thiopental, nitrous oxide, and halothane. After the patients had fully recovered from the anesthesia, the analgesic agents were administered epidurally via the catheter when the patients complained of pain in the postoperative period. The groups were given either 0.1 mg/kg of morphine sulfate or 0.5 mg/kg of ketamine hydrochloride administered in a volume of 10 ml of normal saline. Patients were observed for the onset and duration of postoperative analgesia and for other effects. Total doses were $5.7{\pm}0.6\;mg$ of morphine sulfate in the EMS group and $27.9{\pm}3.3\;mg$ of ketamine hydrochloride in the EKH group. The onset of analgesia was detectable within 35 min.($23.5{\pm}6.3$ min) in 86.7% (26 cases) of the EMS group and within 10 min. ($7.8{\pm}3.7$ min.) in 76.7% (23 cases) of the EKH group. Mean duration of postoperative analgesia was $22.3{\pm}2.1\;hr$. in the EMS group. In the EKH group, the duration of analgesia was shorter and variable, the range of duration was from 2 hr. to 24 hr., Cardiopulmonary changes were statistically insignificant ih both groups. Side effects such as nausea, vomiting, urinary retention, pruritus, dizziness, and headache were observed in EMS group. In the EKH group, there was no discomfort except dizziness (3 cases) and headache (1 case). Epidural ketamine was a safe technique for postoperative analgesia, but because of the variability and relative shortness in the duration of analgesia the use of this technique will require further clinical trials.

• 지역사회간호학회지
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• 제6권2호
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• pp.319-334
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• 1995

To investigate the risk factors of low back pain, an epidemiological study was carried out among male workers aged 20-55 employed in an automobile industry in Korea during the time period from February 1993 to October 1995. Workers participated to this study were divided into low back pain group(LBP) and control group, according to the self-reports by written questionnaires. General characteristics, medical history, work related factors, fatigue, and MMPI were compared between two groups. To clarify the relationship between job related low back pain and radiologic features of lumbar spine, radiographic study was carried out. The resultant data were processed for $x^2-test$, t-test, and stepwise logistic regression to confirm the adjusted odds ratios. The results were as follows: 1. History of back disease, lifting and carrying work, excessive physical fatigue, and weakend back strength of individual workers were directly associated with low back pain. Odd ratios of these 4 risk factors of low back pain were 5.07, 3.34, 1.49, and 1.22 respectively. 2. The frequency of low back pain history was significantly higher in LBP group. 3. Back muscle strength of lumbar spine of LBP group were significantly lower than control group. 4. The workers in LBP group revealed high fatigue symptoms. 5. In MMPI test LBP group showed higher scales in hypochondriasis, depression, hysteria, psychopathic deviate, paranoia, psychasthenia, schizophrenia, and hypomania. 6. LBP group were more frequently involved in lifting and carrying, working in awkward position, bending, twisting and using lower extremities. 7. LBP group were exposed more to vibration during working. 8. In the Analysis of radiographs of lumbar spine, Jacob's line not crossing fourth lumhar disc space, transitional vertebrae and lumbar displacement more than 4.4mm in standing lateral view were more frequently observed in LBP group than control group. Through these results, it is concluded that identification of previous history of back problem, change of work or working environment for workers with previous back problem and measures to relieve both physical and psychological fatigue of the workers are required for optimal management of work-related back problems among workers. In the present study, several results were different from the previous reports: Jacob's line not corssing fourth lumbar disc space, lumbarization, and vertebral slipping (spondylolisthesis) more than 4.4mm are related to backache. Meticulous studies are required to elucidate the difference.

• Archives of Plastic Surgery
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• 제36권5호
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• pp.605-610
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• 2009

Purpose: Substantial tissue necrosis after snake bites requiring coverage with flap surgery is extremely rare. In this article, we report 7 cases of soft tissue defects in the upper and the lower extremities caused by snake bites, which needed to be covered with flaps. Among the vast mass of publications on snake bites there has been no report that focuses on flap coverage of soft tissue defects due to snake bite sequelae. Methods: Seven cases of soft tissue defects with tendon, ligament, or bone exposure after snake bites were included. All patients were males without comorbidities, the average age was 35 years. All of them required coverage with a flap. In 6 cases, the defect was localized on the upper extremity, in one case the lesion was on the lower extremity. Local flaps were used in 6 cases, one case was covered with a free flap. The surgical procedures included one kite flap, one cross finger flap and digital nerve reconstruction with a sural nerve graft, one reverse proximal phalanx island flap, one groin flap, one adipofascial flap, one neurovascular island flap, and one anterolateral thigh free flap. The average interval from injury to flap surgery was 23.7 days. Results: All flaps survived without complication. All patients regained a good range of motion in the affected extremity. Donor site morbidities were not observed. The case with digital nerve reconstruction recovered a static two point discrimination of 7 mm. The patient with foot reconstruction can wear normal shoes without a debulking procedure. Conclusion: The majority of soft tissue affection after snake bites can be treated conservatively. Some severe cases, however, may require the coverage with flap surgery after radical debridement, especially, if there is exposure of tendon, bone or neurovascular structures. There is no doubt that definite coverage should be performed as soon as possible. But we also want to point out that this principle must not lead to a premature coverage. If the surgeon is not certain that the wound is free of necrotic tissue or remnants of venom, it is better to take enough time to get a proper wound before flap surgery in order to obtain a good functional and cosmetic result.

• Journal of Chest Surgery
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• 제40권6호
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• pp.455-458
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• 2007

4개월 전 요추 4, 5번 추궁절제술을 시행받은 40세 남자환자가 호흡곤란과 하지부종을 주소로 내원하였다. 우측하복부에서 박동성 종괴가 촉진되었고 기계잡음이 청진되었다. 흉부단순촬영에서 심비대소견이 관찰되었고, 복부 전산화 단층촬영에서 제5요추 위치의 총장골동맥과 정맥간에 가성동맥류를 동반한 동정맥루가 존재하였다. 복부정중절개를 하여 동맥류를 통한 동정맥 누공의 일차봉합을 시도하여 상,하부 대동맥과 대정맥 감자결찰 후 동맥류를 절개하였으나 대량출혈이 발생하여 누공봉합에 실패한 후 동맥류를 봉합하였다. 동맥치환술로 수술계획을 변경한 후 동맥류에 연해있는 대동맥과 양측 총장골동맥을 절단봉합한 후, 인공도관을 이용하여 동맥을 재건하였고, 동맥류는 총장골정맥에 붙어있는 상태에서 축소성형술을 시행하였다. 환자는 수술 후 별다른 합병증 없이 8일째 퇴원하였고, 이후 별다른 문제없이 24개월간 추적관찰 중이다. 일반적으로 요추궁절제술 후 발생한 동정맥루에서는 누공봉합술을 시행하나 본 증례에서는 동맥치환술과 동맥류 축소성형술을 시행하였기에 문헌고찰과 함께 보고하는 바이다.

• 대한방사선기술학회지:방사선기술과학
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• 제44권6호
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• pp.607-613
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• 2021

Long-bone examination is mainly used for inspection of the lower extremities. Recently, a long length detector (FXRD-1751S, VIEWORKS, Korea) with three digital detectors attached has been developed. High energy X-rays are used because pelvic areas require high image quality. In this case, X-rays are transmitted a lot in thin areas such as an ankle, and it is not suitable for diagnosing an image. Therefore, this study use copper filters made with 3D printers to increase image quality in the Long-bone inspection. A copper filter was manufactured in consideration of the overall thickness of the lower part. The experiment was conducted in anterior-posterior (AP) and lateral (LAT) positions, depending on the presence or absence of the filter. 5x5 pixels of region of interest (ROI) were selected from the pelvis, knee, and ankle areas. X-rays were irradiated under the conditions of 70 kVp and 40 mAs for AP, 80 kVp, and 63 mAs for lat when without filters, 90 kVp and 80 mAs for AP, 90 kVp and 100 mAs for lat when with filters. signal to noise ratio(SNR) ratio and contrast to noise (CNR) values were measured 1106.38, 14.34 before applying the filter and 1189.32, 70.43 after the filter. For the knee area, 650.44, 97.61 before applying the filter, and 1013.17, 444.24 after applying the filter. For the ankle area, 206.65, 23.68 before applying the filter and 993.50, 136.11 after applying the filter. In the Long-bone examination, SNR and CNR were greatly measured when the filter was applied, confirmed the availability of using the copper additional filter.

• 동의생리병리학회지
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• 제35권6호
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• pp.242-248
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• 2021

This study aims to compare nail-fold capillary blood velocity (CBV) according to the presence or absence of cold hypersensitivity in the hands (CHH) using nail-fold capillaroscopy under cold stress conditions. Eleven participants were taken from the cohort study for observing long-term health status of the faculty of Semyung university. Seven of the participants displayed CHH while four showed signs of non-CHH. CBV between 0 and 60 seconds (S1) and between 240 and 300 seconds (S2) was measured under cold stress for 5 minutes, respectively, and the average value was used to compare non-CHH group and CHH group. Body mass index, Nogung (PC8) temperature and temperature difference between Nogung (PC8) and Hyeopbaek (LU4) were significantly lower in CHH group compared to non-CHH group. The S2-S1 CBV difference was negatively correlated with PC8 temperature and PC8-LU4 temperature, and positively correlated with cold pattern score and cold hypersensitivity visual analog scale. The CHH group had a lower CBV overall than non-CHH group, and the S2-S1 CBV difference was significantly higher in the CHH group than in non-CHH group. This study suggests that CBV measured by nail-fold capillarosopy might be a useful indicator of cold hypersensitivity properties.

• 대한정형외과학회지
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• 제55권4호
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• pp.343-347
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• 2020

메이-터너 증후군(May-Thurner syndrome)은 장골 정맥 압박 증후군으로 알려져 있고 좌하지의 총 정맥 유출로가 압박되어 부종, 통증 또는 혈전(심부정맥 혈전증)을 유발할 수 있는 상태이다. 특히 우측 총 장골 동맥과의 교차 지점에서 좌측 총 장골 정맥이 압박되는 형태가 전형적이다. 저자들은 우측 인공 슬관절 전치환술을 시행한 75세 여자 환자에서 메이-터너 증후군이 합병된 증례를 치료하였고 이를 보고하고자 한다. 수술을 시행한 후 좌측 하지의 부종과 통증에 대해 혈관 조영술 및 컴퓨터 단층촬영을 이용해 메이-터너 증후군을 진단하였다. 혈전용해제와 혈전제거술를 사용하여 혈전을 제거한 후 혈관 성형술 및 정맥 내 스텐트를 삽입하였다. 한국에서 인공 슬관절 전치환술 후 메이-터너 증후군이 합병된 증례는 보고된 바가 없다. 이에 저자들은 문헌고찰과 함께 보고하고자 한다.

• 대한정형외과학회지
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• 제55권3호
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• pp.253-260
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• 2020

목적: 하지, 특히 정강이 앞 부분이나 발, 발목에서의 연부조직 결손은 피복에 어려움이 있다. 저자들은 하지의 개방성 골절 또는 폐쇄적 골절 후 수상부위에 발생한 다양한 연부조직 결손에 대하여 역행성 표재 비복동맥 피판술을 사용하여 피복을 시행한 예들을 수집, 분석하여 그 임상적 결과를 보고하고자 한다. 대상 및 방법: 2003년 8월부터 2018년 4월까지 하지의 골절 후 수상 부위에 발생한 연부조직 결손에 대하여 역행성 비복동맥 피판술을 시행받은 환자를 대상으로 하였다. 수술 후 최소 6개월 추시가 가능했던 16명의 환자를 대상으로 하였으며, 평균 추시기간은 18개월이었다. 8예는 개방성, 다른 8예는 폐쇄적 골절 후 발생한 합병증으로 연부조직 결손이 발생했다. 피판의 평균크기는 51.9 cm²였으며, 가장 큰 피판의 크기는 10×15 cm²였다. 결과 분석을 위해 수술 후 피판의 생존 여부와 추가 술식, 합병증 등을 조사하였다. 결과: 최종 추시 시 이식 피판은 모두 생존하였으며, 공여부에 별다른 합병증도 발생하지 않았다. 수술 후 단기 추시 당시 1예에서 경계부의 부분 괴사 소견이 발견되었으나 변연절제술과 1차 봉합을 통해 회복되었다. 다른 1예에서는 혈종이 발생하여 추가로 혈종제거술을 시행하였으며, 추시기간 내 피판은 성공적으로 생존하였다. 이식부의 미용적 목적으로 피판 축소수술이 3예에서 시행되었고, 피판부를 절개하고 접근하여 내고정물을 제거하거나 추가적 내고정술을 시행한 건이 3예였었다. 결론: 역행성 표재 비복동맥 피판술은 하지 골절과 동반된 연부조직 결손의 치료에 있어 적극적 적용을 고려할 만한 유용한 술기의 하나가 될 수 있을 것으로 생각된다.