• Journal of Trauma and Injury
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• 제28권2호
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• pp.79-82
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• 2015

Simple rib fracture is one of most common injury after blunt thoracic trauma found in approximately 7% to 40% of cases. Delayed traumatic diaphragmatic injury with massive hemothorax after rib fracture is rare but a potentially life-threatening condition. We present a rare case of a 79-year-old male with delayed diaphragmatic injury with massive hemothorax due to fracture of the lower ribs. Under thoracoscopy, hemothorax was evacuated, diaphragmatic rupture was identified and repaired, and the lower ribs were fixed with metal plate (s). Although simple lower rib fractures may be the only clinical finding, close observation and monitoring are required because of the possibility of diaphragmatic and/or intraabdominal organ injury.

• 한국임상수의학회지
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• 제13권1호
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• pp.87-92
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• 1996

A hemangiosarcoma in a 30 kg, 6-year-old German Shepherd dog showing signs of abdominal distension, anorexia and depression was diagnosed with clinicopathologic examination, abdominal radiographs and ultrasonographic assessmint. In abdominal radiographs, overall abdominal distension was seen. Stomach and some parts of small intestines were deviated caudo-ventrally by enlarged liver. The splenomegaly was also identified and descending colon was dislocated laterally by splenic mass. In ultrasonographic findings, abdominal fluid was identified. Hepatomegaly was seen and it was consisted of multiple, anechoic cysts. The spleen was enlarged and a large round mass with mixed echo pattern at the mid to tail portion of spleen was identified. Grossly, at necropsy, multi-sized cysts in which contained blood and fibrpus materials and some blood were seen in the cross section and it showed hard consistency. Also, lots of small red tumor nodules were dispersed on the serosal surface of the bladder, omentum, mesentery, diaphragm and peritoneum. In abdominal paracentesis, fluid having almost the same properties as circulating blood was identified. The hemoperitoneum was thought to be resulted from the bleeding into peritoneum owing to the rupture of cystic lesions located on the superficial liver area.

• 소음진동
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• 제9권2호
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• pp.285-294
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• 1999

Transient analysis for compressible fluid flow has been performed experimentally and analytically to study the dynamic characteristics of the end volume transmission lines following a sudden pressure change a its entrance. The numerical method was developed based on the method of characteristics. The sudden pressure at its entrance was generated by rupture of diaphragm in a shock tube. The sudden pressure was used to obtain the response, as input signal for the numerical analysis. The response to the sudden pressure at the end volume was measured using a pressure transducer. The experimental result shows good agreements with the numerical result. The effects of tube length, its diameter and end volume magnitude are evaluated on the responses of the pressure and on the damping factor. It is found that the viscous damping effects on the response through the transmission pipeline becomes larger with increasing pi;eline length and decreasing diameter of the pipe and the fluid-elastic stiffness decreases with increasing the terminal volume. The numerical approach presented in this paper can be very useful in designing the instrument and control system.

• Journal of Chest Surgery
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• 제6권2호
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• pp.237-242
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• 1973

Two cases of traumatic diaphragmatic hernia are reported, who were operated on in this department during the last 12 months` period. The first case, a 34 year old male, fell from 6 meters` height while he was working on electric pole. He sustained rib fractures, left 8th, 9th and 10th rib, left diaphragmatic rupture and ileal perforation. In the pleural cavity, there were stomach, omentum, left lobe of liver, transverse colon and ileum, which were reduced into the peritoneal cavity, and the diaphragmatic aperture was closed through anterolateral thoracotomy. After closure of the thoracic incision, median abdominal incision was made and closed the ileal perforation by primary suture. The second case was a 19 year old tyre repairman, who felt abrupt severe abdominal pain during lifting a heavy lyre. A barium study revealed a marked displacement of the stomach into the left pleural cavity. Immediately, thoracotomy was performed and closed the ruptured diaphragm after reduction of the herniated stomach, omentum, transverse colon, spleen and small intestine. The size of the diaphragmatic aperture were measured 17cm. in first case and 12cm. in the other respectively. Both cases discharged after uneventful recovery.

• Journal of Trauma and Injury
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• 제19권2호
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• pp.201-205
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• 2006

Tension viscerothorax (gastrothorax) is rare life-threatening disease which is caused by air trapped in viscera. A distended viscera in the hemi-thorax shifts the mediastinal structures and causes extra-cardiac obstructive shock. A defective diaphragm is caused by abdominal trauma or a congenital anomaly. Traumatic diaphragmatic injury can be missed until herniation develops several years after blunt trauma. In our case, a 10-year old boy developed hemodynamic compromise in the emergency department. Three years earlier, he had suffered blunt abdominal trauma during a pedestrian traffic accident, but there was no evidence of diaphragmatic injury at that time. He was successfully resuscitated by gastric decompression and an emergent thoracic operation. The operation finding revealed a traumatic diaphragmatic injury. Tension viscerothorax is a rare, but catastrophic, condition, so we suggest that addition of tension viscerothorax to the Advanced Trauma and Life Support (ATLS) guidelines may be helpful.

• 한국추진공학회지
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• 제17권5호
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• pp.54-59
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• 2013

현재 Micro Shock Tube는 다양한 공학응용분야에 적용되고 있으며, 특히 우주항공 및 연소기술 그리고 약물전달 등의 분야에서 광범위한 잠재력을 가진 장치 중 하나이다. 그러나 Micro Shock Tube에서의 유동 특성은 작은 직경으로 인해 형성되는 매우 낮은 Reynolds Number와 높은 Knudsen Number의 영향으로 일반적으로 잘 알려진 Macro Shock Tube의 유동 특성과 상이하게 나타난다. 본 연구에서는 이러한 Micro Shock Tube의 유동 특성을 상세히 연구하기 위해 직경이 다른 두 가지 Micro Shock Tube의 실험을 수행하였다. 충격파 전파를 측정하기 위해 고압관의 파막압력 그리고 저압관의 세 지점에 센서를 설치하여 압력을 측정하고 분석하였다. 본 연구로부터, 동일한 파막압력에서 Micro Shock Tube 직경의 증가에 따라 충격파 전파속도가 증가하였고, 반사파의 영향도 더 크게 받았다.

• 한국추진공학회지
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• 제14권4호
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• pp.10-15
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• 2010

Two-stage light-gas gun은 짧은 시간동안 초고압을 발생시키기 용이하므로, 현재까지 고속충격역학, 발사체 공기역학, 재료역학 등 다양한 공학 분야에서 활용되어 왔다. 일반적으로 2단식 경가스총은 고압실, 압축실 그리고 발사관으로 비교적 간단한 구조로 구성되며, 각 부분은 격막에 의해 구분되어있다. 본 연구는 2단식 경가스총을 초고압 액체 제트 분사에 적용하기 위한 기초적 연구로서, 고압실 하류에 설치된 제1격막의 파막 압력의 변화에 따른 발사체의 속도 변화 및 관내 압력 거동을 조사하였다. 그 결과, 제1격막이 파막 되는 압력은 피스톤의 가속에 큰 영향을 미치며, 피스톤이 가속될수록 고압을 생성하는데 용이하였다.

• Tuberculosis and Respiratory Diseases
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• 제66권3호
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• pp.241-245
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• 2009

외상성 횡격막 손상은 대부분 교통사고와 관련되어 있다. 특히, 횡격막 파열은 그 진단이 지연되는 경우가 많다. 왜냐하면, 임상적 증상 및 징후가 특이적이지 않기 때문이다. 또한, 가슴 X-선 사진에서도 특징적 소견을 보이지 않으며, 더구나 동반된 다른 외상으로 인해 진단이 은폐될 수 있다. 그래서 다발성 외상 환자를 접근할 때는 횡격막 손상을 의심하고 적절한 검사를 택하는 것이 중요하다. 저자들은 교통사고로 인한 다발성 둔기외상으로 내원한 54세 남자 환자에서 입원 12 병일에 수술적 치료를 요하는 횡격막 파열을 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• Journal of Chest Surgery
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• 제15권4호
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• pp.422-427
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• 1982

A clinical analysis of 82 cases who were sustained the penetrating gun-shot wound in the chest by 8 bullets was done during 4~ year-period from January 1978 to August 1982 in the department of thoracic surgery, CA FGH. Among 82 cases, 61 cases [74.4%] of them were brought to the Hospital by ambulance, 21 cases [25.6%] were by Helicopter and 76 cases [92.7%] of them were admitted within 4 hours after wounding. Thirty eight [46.3%] patients were treated by closed thoracotomy only, 19 cases [23.2%]by open thoracotomy, 18 cases [22.0%] by primary closure with debridement, and 7 cases [8.5%] by vascular surgery. Causes of open thoracotomy were due to massive intrapleural bleeding in 16 cases, rupture of diaphragm in 2 Gases, and heart injury in one case. Among 25 cases of surgical complications, wound infection was most common in 16 cases [53.5%] and recurrent pneumothorax in 3 cases [10%], empyema in 3 cases [10%], and BPF in one case [3.3%]. Hospital mortality was seen in 6 cases due to hypovolemic shock and respiratory insufficiency in 4 cases, spinal shock in 2 cases due to spinal injury.

• Journal of Chest Surgery
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• 제38권7호
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• pp.518-521
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• 2005

흉부 자궁내막증에 의한 기흉은 드문 질환으로 일반적으로 월경과 연관되어 재발하여 발생하는 경우 월경성 기흉(Catamenial pneumothorax)으로 명명된다. 발생 기전은 아직 명확히 밝혀지지 않았으나, 단순 폐기포의 파열, 장측 늑막에 형성된 자궁내막조직에 의하여 발생된 경우, 횡격막에 형성된 자궁내막조직에 의한 횡격막결손부위를 통한 공기의 이동 등으로 설명되고 있다. 전형적인 월경성 기흉은 주로 30-40대 여성에서 월경 후 48-72시간 안에 발생하며 편측성으로 우측에 호발하는 것으로 알려지고 있다. 본 저자들은 양측 성으로 발생한 자발성 기흉 환자에서 시행한 개흉술로 절제된 폐의 병리조직검사 소견상 '자궁내막증(endometriosis)'으로 확진된 1예를 경험하였기에 보고한다.