• Maxillofacial Plastic and Reconstructive Surgery
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• 제11권1호
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• pp.249-254
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• 1989

Transverse mandibular deficiency is rare maxillomandibular malrelationship. Most of this malrelationship is considered to be caused by loss of bone substances. This can be corrected by subapical osteotomy, midsagittal vertical osteotomy, midline horizontal L sliding osteotomy, etc., case by case. In these cases, malrelationship after malunion of mandibular fracture, combination of vertical osteotomy and sliding autogenous cortical bone graft was used and favorable results were obtained. Advantages over previous traditional surgical methods were as follows : 1. This method provided easy access and good visibility. 2. It provided broad bone contact area, thus no other operation to obtain bone graft was needed. 3. There were little circumstances to extract teeth. 4. There were no difficulty in tongue movement after operation.

• Journal of Chest Surgery
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• 제23권1호
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• pp.169-173
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• 1990

An aberrant right subclavian artery is a rare congenital anomaly that usually does not produce symptoms. Symptomatic patients require surgical intervention. Ligation of the aberrant artery through a left thoracotomy has been advocated as the operation of choice. If development of vertebrobasilar insufficiency is anticipated, division and ligation of he aberrant artery and its anastomosis to the right common carotid artery or aortic arch are performed at a second operation. Experience with successful surgical treatment of a patient with an aberrant subclavian artery is described. A right thoracotomy incision was utilized for division of the subclavian artery and for reestablishment of arterial continuity with Dacron graft. Postoperative arteriography demonstrated a good reconstruction and normal blood flow was established to the right upper extremity.

• Journal of Chest Surgery
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• 제17권4호
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• pp.747-752
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• 1984

Bronchopleural fistula is the communication between a bronchus or bronchiole and the pleural space, clinically bronchopleural fistula is usually combined with infection. But pneumothorax is the communication between a peripheral air space such as a ruptured bleb, and the pleural space. The author studies on the 62 bronchopleural fistula patients who were admitted to P.N.U.H. from 1974 to October, 1984 according to causative mechanism which was postresectional origin, non resectional surgical origin and spontaneous origin, and its underlying diseases. The following results were obtained. 1.The causes of BPF: 5.16% was spontaneous origin, 30.6% was postresectional origin, 17.7% was other surgical origin. 2.The causes of BPF after resectional operation: 42.1% was tuberculosis, 21.1% was tumor resectional case. 3.The proper operational method for BPF was thoracoplasty with myoplasty. 4.The average operation for BPF was 2.7 times.

• 대한의용생체공학회:의공학회지
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• 제26권5호
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• pp.309-317
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• 2005

It is expected that fully-implantable middle-ear hearing devices (FIMEHDs) will soon be available with the advantages of complete concealment, easy surgical implantation, and low power operation to resolve the problems of semi-implantable middle-ear hearing devices (SIMEHDs) such as discomfort of wearing an external device and replacement of battery. Over the last 3 years, a Korean research team at Kyungpook National University has developed an FIMEHD called ACRHS-1 based on a differential floating mass transducer (DFMT). The main research focus was functional improvement, the establishment of easy surgical procedures for implantation, miniaturization, and a low-power operation. Accordingly, this paper reviews the overall system architecture, functions, and experimental results for ACRHS-1 and its related accessories, including a wireless battery charger and remote controller.

• Journal of Chest Surgery
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• 제20권2호
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• pp.317-322
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• 1987

Records of 15 patients who underwent operation for constrictive pericarditis at this department from 1976 through 1984 were reviewed. All had hemodynamically significant pericardial constriction preoperatively, and pericardial disease was confirmed at operation. There were 12 males and 3 females in this series. Range of age varied from 7 years to 51 years. Clinical and histological study revealed granulomatous pericarditis compatible with the diagnosis of tuberculosis in 5 patients, non-specific chronic inflammatory changes in 6 patients and pyogenic pericarditis in 2 patients. Pericardiectomy was performed through a median sternotomy [11 cases] or bilateral anterior thoracotomy [4 cases]. The postoperative complications were observed in 4 patients. Low cardiac output was the most common complication [2 patients]. In 13 cases, excluding 2 operative deaths, preoperatively all were in New York Heart Association Class III or IV. At the time of discharge II [85%] were in Class I or II. 4 Cases were reoperated after original pericardiostomy and all resulted in marked improvement. Early surgical intervention is advisable in all patients in whom cardiac constriction is caused by either a thickened pericardium or a pericardial effusion before myocardial dysfunction occurs.

• Journal of Chest Surgery
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• 제27권7호
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• pp.617-620
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• 1994

Approximately 10% of patients who have undergone atrial repair for transposition of the great arteries display easily identifiable RV dysfunction with or without TV incompetence by 10years. Treatment is difficult & the surgical options for this complication are limited. We experienced two cases of the reversal of atrial repair and conversion to an arterial switch after initial pulmonary artery banding. This surgical program is a realistic modality treating late failure of systemic right ventricle after atrial switch operation.

• Journal of Chest Surgery
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• 제33권10호
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• pp.843-846
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• 2000

Primary hemangiopericytoma of chest wall is very rate and only a few cases have ever been reported. The tumor aries from the capillary pericyte of Zimmerman. It is a highly vascular slow growing tumor which can be calssified as both malignant and benign varieties. We report a case of a 66 year-old man in whom recurrent hemangiopericytoma was treated by complete surgical excision. In October 1993 he had received surgical excision of hemangiopericytoma on posterior chest wall. For more than 6 years after the operation he was in good condition until a recurrent mass was found on the chest X-ray. The patient was discharged 9 days after the operation and is receiving radiotherapy.

• Journal of Chest Surgery
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• 제14권2호
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• pp.153-160
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• 1981

Within the group of congenital cardiac anomalies manifesting dextrocardia and double-outlet right ventricle, ventricular non-inversion [S.D.L] is extremely rare. Recently, a 5 year-old boy underwent a successful surgical correction of dextrocardia associated with double-outlet right ventricle, ventricular non-inversion [S.D], ventricular septal defect, pulmonary stenosis, and patent foramen ovale. The operation consisted of construction of an internal baffle connecting the left ventricle to the aorta through the large ventricular septal defect [subaortic]. The pulmonary stenosis was managed by infundibulectomy and patch enlargement of the right ventricular wall. The patient`s postoperative recovery has been uneventful, and 2 months after the operation, he is doing well.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 춘계학술대회
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• pp.366-369
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• 1997

In this study, we measured upper right, lower right, upper left region to find the optimal region which represent liver function. We found that the upper right region is optimal because of high accuracy and low standard deviation. For normal subjects all the calculated HEFs were greater than 100% and all those of abnormal ones were less than 80%. Thus HEF can be assumed to discriminate abnormal livers from normal ones. It was found that the patients with surgical operation would survive if both the pre-and the post-operative HEFs are greater than 50%. Therefore HEF method can be a good estimator for surgeon to determine the surgical operation and to evaluate remaining hepatic function after surgery as well as it is reliable and simple.

• Journal of Chest Surgery
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• 제27권1호
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• pp.31-35
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• 1994

Dissecting aortic aneurysm is a life threatening condition which necessitates prompt diagnosis and management. Between January 1987 and September 1993,58 patients was admitted to our department. Mean age at admission was 53 years.[range 25-82]. Clinical findings included chest pain in 48 cases[83%],renal failure in 12[20%],aortic insufficiency in 11[19%] and stroke in 9[15%]. Predisposing factors were hypertension in 50 cases[86%],Marfan`s syndrome in 6[10%] and diabetes melitus in 1 [2%]. 23 patients[ type A 13,type B 10 ] underwent surgical treatment. Surgical technique for type A included graft replacement of ascending aorta in 7 cases,graft replacement and aortic valve resuspension in 3,and Bentall`s operation in 3 cases. Type B patients were operated when specific indications applied. There were three [Two in type A and 1 in type B] deaths in the operation group and nine [ 5 in type A and 4 in type B] deaths in the medical group. These results support our current policy in the treatment of dissecting aortic aneurysm.