• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.8 no.2
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• pp.137-142
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• 2005

Purpose: To evaluate the safety, efficacy and technical problems of the endoscopic balloon dilatation of esophageal anomalies in children. Methods: The medical records of 8 children treated by endoscopic balloon dilatation for esophageal anomalies over a 10-year period at Pusan National University Hospital were reviewed retrospectively. The balloon catheter (Maxforce TTS or CRE, Boston Scientific Co., USA) was positioned across the area of narrowing by direct visualization. The balloon was slowly inflated with normal saline to specified pressures for each balloon and maintained for 60 seconds and then deflated. After 60 seconds pause, the procedure was repeated with a larger sized balloon (increments of 1 mm for each subsequent dilation) till effective dilatation was confirmed by direct visualization without complications. Results: Three male and five female were included and their mean age was 4.2 years. A total of 27 (average of 3.2 per patient) dilatation were performed. Underlying diseases of patients are postoperative stricture of esophageal atresia in 3 cases, esophageal ring in 2 cases, achalasia, corrosive esophagitis and hypertensive LES in one case respectively. The size of initial dilating balloon was chosen on the basis of the diameter of the narrowing determined by endoscopy. The first dilation in patients with severe esophageal stricture was made with a 6 mm sized balloon. Complications observed were esophageal perforation and respiratory holding during the procedure in one case respectively. Successful outcome was seen in 6 patients (75%). Conclusion: Endoscopic balloon dilatation can provide a safe and effective mean of treating esophageal anomalies in children and should be considered the treatment of choice in the initial management of those cases.

• Proceedings of the Korean Society of Radiological Science
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• 1994.10a
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• pp.110.2-111
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• 1994

• Journal of Veterinary Clinics
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• v.26 no.2
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• pp.160-165
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• 2009

A 4-month-old intact male Boxer dog(9 kg of body weight) was presented with the primary complaints of heart murmur and exercise intolerance. Diagnostic studies revealed severe subaortic stenosis. Since the pressure gradient(PG) in stenotic aortic valve area was higher than ${\sim}120mmHg$(5.4 m/s of peak velocity), the dog was underwent balloon valvuloplasty. With this procedure, the peak aortic velocity was reduced to 3.9 m/s(${\sim}60mmHg$ of PG) and the clinical condition of dog was markedly improved. Periodic re-evaluations performed at monthly interval revealed no further deterioration. This is the first case report of subaortic stenosis treated by non-surgical palliative balloon valvuloplasty in Korea.

• Journal of the Korean Society of Radiology
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• v.14 no.2
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• pp.179-191
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• 2020

The aim of this study was to investigate the predictors of major adverse cardiac events (MACE) in patients with drug-eluting balloon (DEB) for in-stent restenosis (ISR) lesion. Total of 257 patients who developed ISR on follow-up coronary angiography (66.1 ± 10.1years, 172 males) in Chonnam National University Hospital between October 2012 and January 2017 were enrolled. We divided the patients into two groups; group I (MACE group; n= 35) and group II (No MACE group; n= 222). A multivariate logistic regression analysis revealed that type IV ISR (HR=4.179, 95% C.I.=1.851-9.437 p= 0.001), lesion length > 25 mm (HR=8.773, 95% C.I.=1.898-40.546 p=0.005), number of ISR recurrence > 2 (HR=4.693, 95% C.I.=1.259-17.490 p= 0.021) were independent factors for MACE after DEB in ISR lesions.

• The Korean Chronic Disease News
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• no.125
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• pp.6-7
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• 1991

• Journal of Chest Surgery
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• v.36 no.1
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• pp.55-58
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• 2003

Although postanastomosis of esophageal reconstruction is rare but it is a very unwelcome complication. Previously, the problem was solved by balloon dilatation, reoperation, and feeding jejunostomy. However, balloon dilatation is not effective because of high recurrence rate, reoperation is difficult due to its operative approachableness and also jejunostomy is inconvenient for patients. Therefore, we inserted esophageal stent as a method of relieving postanastomosis stenosis, From Jan, 2001 to Dec, 2001, there were three patients with postanastomosis stenosis, who received esophageal stent insertion, one had case is benign esophageal stenosis, two had esophageal carcinoma. We followed up them over 12 months after inserting the stent, Dysphagia was improved, so we report that the clinical performance was satisfactory

• Journal of Chest Surgery
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• v.31 no.4
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• pp.402-408
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• 1998

A 56-year old female underwent total aortic arch replacement March 1995, because of an expanding chronic Debakey type I aortic dissection. This aortic dissection had an intimal tear at the origin of the right carotid artery. Retrograde and antegrade propagation of dissection resulted in aortic arch blood flow separation and expanding pseudolumen to the abdominal aorta. Sudden anuria(ARF) developed 3 hours later postoperatively and renal doppler ultrasonography and aortography showed diminished blood flow of renal arteries. We performed balloon aortic dilatation but failed. She could be restored good renal flow after intimal flap fenestration resection and thrombectomy of the abdominal aorta. This patient could be discharged in a state of mild CRF after 2 months of ICU care for respiratory and renal failure.

• Journal of Chest Surgery
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• v.36 no.4
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• pp.255-260
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• 2003

Background: Stenosis of the left pulmonary artery (LPA) after repair of tetralogy of Fallot (TOF) is troublesome. A new technique of LPA angioplasty using an autologous MPA flap was performed in patients with TOF Material and Method: From October 1998 to January 2001, 24 patients (median age; 10 months, range; 4 to 145 months) underwent total correction of TOF with LPA angioplasty using the autologous MPA flap. Five patients underwent pulmonary angioplasty without any patch over the MPA and LPA. The patches were required to enlarge only the MPA in 4 patients, and transannular RVOT widening was performed in 15. Result: There were no operative or late deaths. During follow-up (range: 6~42 months), reoperation for LPA stenosis was not required in any patients, but balloon angioplasty for branch pulmonary artery stenosis was performed in 3 patients. Echocardiography and CT angiography at the recent follow-up showed an obtuse angle between the MPA and LPA. Conclusion: Although further follow-up is needed, the angioplasty using the autologous MPA flap can be easily performed, avoiding patch-related complications, and allowing growth of the MPA flap. This angioplasty technique creates a more natural and obtuse angle between the MPA and LPA, which can minimize kinking of the LPA, especially in the patients who underwent transannular patch widening.

• Journal of Chest Surgery
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• v.35 no.2
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• pp.157-160
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• 2002

Recently, video-assisted surgical approaches for achalasia have been adopted by many surgeons. Many reports showed that the minimal invasive video-assisted operations for Ihe achalasia revealed such good results as the conventional operations via thoracotomy. In some studies, among the minimal invasive video assisted surgeries for achalasia, the laparascopic assisted operations have some advantages mainly in respect to patient satisfaction over the thoracoscopic assisted surgeries. In this case, the patient had not responded to repeated balloon dilatation, and we made 5 small incisions over the abdominal wall and performed an esophageal myotomy and partial anterior fundoplication by laparascopic guide. The patient's symptoms were almost relieved, and the postoperative radiologic findings were satisfactory.

• Progress in Medical Physics
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• v.13 no.2
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• pp.98-103
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• 2002

The purpose of this study was to evaluate the absorbed dose to the coronary artery segment from various sized balloon angio catheters. The liquid form of Ho-166 was produced at the KAERI by (n, ${\gamma}$ ) reaction. We used GafChromic film for the estimation of the absorbed dose by beta particles. The exposed films were read using a videodensitometer. Several film exposures were made with varying irradiation times and activities. A modified micrometer was used for the measurement of the absorbed dose distribution near the balloon surface. Four balloons of coronary catheters evaluated were 30 m long and 2.5, 3.0, 3.5 and 4.0 mm in diameter. All doses are plotted in units of Gy/min/GBq/ml as a function of radial distance in mm from the surface of balloon. The absorbed dose rate was 0.86, 1.01, 1.11 and 1.24 Gy/min/GBq/ml at a balloon surface for various balloon diameter 2.5, 3.0, 3.5 and 4.0 mm respectively. Using a vacuum pump, the air in the balloon was evacuated prior to instillation of the Ho-166 source. By removing air bubbles in the balloon, the absorbed dose distribution was more uniform.