Surgical Experience of the Remnant Thoracoabdominal Aortic Replacement after Aortic Surgery / 대한흉부외과학회지

BACKGROUND: Aortic diseases tend to involve the entire aorta. Hence, there is the constant possibility of the need for a secondary operation at the remnant aorta. This study analyzed our cases of secondary aortic surgery in order to determine its characteristics and problems. MATERIAL AND METHOD: Between April 2003 and June 2007, 12 patients (6 male and 6 female) underwent thoracoabdominal aortic replacement as a secondary aortic operation. Their clinical courses were analyzed. Four of the patients underwent lower thoracobadominal aortic replacement under the normothermic femorofemoral bypass, and the others underwent an entire thoracobdominal aortic replacement under deep hypothermic circulatory arrest. RESULT: There was no death or paraplegia. As local complications, there were 3 cases of wound infection and 2 cases of an immediate reoperation caused by bleeding and one case of delayed wound revision for a contaminated perigraft hematoma. As a systemic complication, there was one case of renal insufficiency, which required hemodialysis and one case of respiratory insufficiency that needed prolonged ventilator care. The mean admission period was 30+/-21 days. All the patients were followed up for 626+/-542 days without reoperation or other problems. CONCLUSION: Using properly selected patients and a careful approach, thoracoabdominal aortic replacement can be performed safely as a secondary aortic surgery.

Comparison of the Mid-term Changes at the Remnant Distal Aorta after Aortic Arch Replacement or Ascending Aortic Replacement for Treating Type A Aortic Dissection / 대한흉부외과학회지

BACKGROUND: Replacing the ascending aorta is a standard surgical option for treating acute type A aortic dissection. But replacing the aortic arch has recently been reported as an acceptable procedure for this disease. We compared the effects of aortic arch replacement for treating acute type A aortic dissection with the effects of ascending aortic replacement. MATERIAL AND METHOD: From 2002 to 2006, 25 patients underwent surgical treatment for acute type A aortic dissection. 12 patients underwent ascending aortic replacement and 13 patients underwent aortic arch replacement. Among the aortic arch group, an additional distal stent-graft was inserted during the operation in 5 patients. 19 patients (11 arch replaced patients and 8 ascending aortic replaced patients) were followed up at the out patient clinic for an average of 756+/-373 days. All the patients underwent CT scanning and we analyzed their distal aortic segments. RESULT: 4 patients who underwent ascending aortic replacement died, so the overall mortality rate was 16%. Among the 11 long term followed-up arch replacement patients, 2 patients (18.1%) developed distal aortic dilatation and one of them underwent thoracoabdominal aortic replacement later on. However, among the 8 the ascending aortic replaced patients, 5 patients (62.5%) developed distal aortic dilatation. CONCLUSION: Aortic arch replacement is one of the safe options for treating acute type A aortic dissection. Aortic arch replacement for treating acute type A aortic dissection could contribute to a reduced distal aortic dilatation rate and fewer secondary aortic procedures.

Surgical Treatment of Anastomotic Pseudoaneurysm after the Aortic Replacement / 대한흉부외과학회지

An anastomotic pseudoaneurysm after the aortic replacement surgery is a rare complication which could be lethal when it ruptures. So it should be corrected whenever it is found after the aortic surgery. The authors performed three surgical corrections in 2 cases. The first case is type B chronic aortic dissection with abdominal aortic aneurysm. After an abdominal aortic replacement, the patient developed an anastomotic pseudoaneurysm. We treated him with a thoracoabdominal aortic replacement. The second case is ruputred throacoabdominal aortic aneurysm. After a thoracoabdominal aortic replacement, the patient developed an anastomotic pseudoaneurysm in the proximal anastomosis. We treated her with aortic arch replacement. But She developed another pseudoaneurysm in the aortic root anastomotic site. So we performed secondary operation to reinforce the anastomosis. They all recovered from the operations without any complication and are being followed up.

The Thracoabdominal Aortic Replacement Using Deep Hypothermic Circulatory Arrest Technique / 대한흉부외과학회지

BACKGROUND: Thoracoabdominal aortic replacement is an extensive operation that opens both the pleural cavity and abdominal cavity, which has high mortality and morbidity rate. The authors have reported 9 cases of the thoracoabdominal aortic replacement in 2001. Since 2003 we have applied the deep hypothermic circulatory arrest to the Crawford type I and II thoracoabdominal aortic replacement. Therefore, we analysed the effect of the changes in operative techniques. MATERIAL AND METHOD: Between 1996 and 2005, we have performed 20 cases of thoracoabdominal aortic replacement. The underlying diseases were 8 cases of atherosclerotic aneurysm with 4 cases of ruptured aneurysm and 12 cases of aortic dissection with 10 cases of a previous operations. According to Crawford classification, there were 2 cases of type I, 7 cases of type II, 1 case of type III, 7 cases of type IV, and 3 cases of type V. We compaired the results of the patients who underwent thoracoabdmoninal replacement before 2001 which already has been reported and after then. RESULT: Before 2001 we have performed 9 cases of thoracoabdominal replacement and 5 patients were died of the operation. All three patients with type I and II were died. There was no case of thoracoabdominal replacement between 2001 and 2002, but after 2003 we have performed 11 cases of thoracoabdominal replacement which involved 1 case of type I, 5 cases of type II, 1 case of type III, 2 cases of type IV and 2 cases of type V. There was no mortality and no fetal complications. CONCLUSION: The deep hypothermic circulatory arrest is a safe method of extended thoracoabdominal aortic replacement.

The Clinical Effect of Administration of Magnesium Sulfate in Cardiac Surgery / 대한흉부외과학회지

BACKGROUND: Hypomagnesemia is a common complication after cardiac surgery with cardiopulmonary bypass. The purpose of this study was to assess the clinical beneficial effect of administration of magnesium sulfate in cardiac surgery. MATERIAL AND METHOD: Thirty five patients scheduled for elective cardiac surgery were randomly assigned to magnesium group (n=20) which received magnesium sulfate in priming solution (1 g) and cardioplegic solution (1 g) or control group (n=15) which did not receive it. Arterial blood samples were drawn for measuring Mg++ and electrolytes contents, blood gas analysis, CBC, total protein, albumin, blood urea nitrogen (BUN), creatinine, alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin, tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), interleukin-10 (IL-10), creatine phosphokinase (CpK), creatine kinase-MB (CK-MB), lactate dehydrogenase(LDH), troponin-I (TNI), prothrombin time (PT) and activated pratial thromboplastin time level (aPTT). Venous blood samples were drawn before and after the operation for measuring activated clotting time level (ACT). RESULT: Mg++ levels in magensium group were higher than those of control group at intraoperative and postoperative periods (p<0.05). dysrhythmias were lower in magnesium group (8 cases out of 17 patients, 46.4%) than in control group (10 cases out of 10, 100%, p=0.050). CONCLUSION: These results showed that administration of low dose magnesium sulfate during cardiac surgery prevented hypomagnesemia and lowered incidence of dysrhythmia.

A Case of Total Aortic Arch Replacement with Root Plasty with Right Coronary Artery Bypass and Distal Open Stent-graft Insertion in Acute Type I Aortic Dissection / 대한흉부외과학회지

Since the operative mortality rate of the Acute aortic dissection has been reducing, a more extensive primary repair of the dissected aorta is preferred for acute aortic dissection to reduce the needs of secondary procedures. We performed a total aortic arch replacement with distal stent-grafting in acute type A aortic dissection. The patient was a 50-years old man. He recovered from the operation and was followed up for 7 months. The pseudolumen in the descending aorta was obliterated with the stent.

Gene Expression Profile of Volume-Overloaded Human Ventricular Myocardium Prior to Developing Heart Failure

BACKGROUND AND OBJECTIVES: Left ventricle burdened by longstanding volume-overload, undergoes various structural and functional alterations. Accordingly, the expressions of multiple classes of genes are likely to be altered. However, the profile of gene expressions, specifically in a volume-overloaded left ventricle in humans, has not been explored. SUBJECTS AND METHODS: The pattern of gene expression was studied, using a cDNA microarray, in myocardium from 4 normal subjects and 5 patients with chronic regurgitant valvular heart disease whose end-diastolic left ventricular dimension measures 65 mm or more, but whose systolic function remained preserved. RESULTS: We identified 58 differentially expressed genes that were functionally classifiable in the volume-overloaded myocardium. Those genes involved in cell cycle/growth (up/down-regulation: 9/1), signal transduction (4/1) were mostly overexpressed in the volume-overloaded myocardium. The distributions of the gene expressions were variable for those involved in transcription/translation (up/down-regulation: 6/7) and apoptosis (2/2). The genes related to the myocyte structure (troponin T3, tropomyosin, etc)(up/down-regulation: 1/10), as well as those related to metabolism (2/5), were underexpressed. The gene expression patterns from RT-PCR and Western blot, with randomly selected genes, were similar to those from the cDNA microarray. CONCLUSION: Altered expression was identified in multiple genes in the volume-overloaded human left ventricle prior to the development of heart failure. The genes related to cell growth and signal transduction were mostly overexpressed, while those related to cellular structure and metabolism appeared to be underexpressed. These results might help in the elucidation of cellular mechanisms for the remodeling process associated with chronic volume-overloading.

Clinical Results of 100 Cases of Coronary Artery Bypass Grafting without Cardiopulmonary Bypass / 대한흉부외과학회지

BACKGROUND: Coronary artery bypass grafting on the beating heart is no longer a new methods for any cardiac surgeon. We evaluated the application of the off-pump coronary artery bypass procedure relative to safety and efficiency as measured by postoperative complication and operative mortality. MATERIAL AND METHOD: We used our retrospective database to compare the patients having off-pump coronary surgery (n=100) with those having on-pump coronary surgery (n=100) between June, 1999 and August, 2002. Patients whom underwent associated valvular or aortic aneurysmal operation were excluded. RESULT: Neither groups showed any differences in the patient's risk factors and extent of coronary disease. Off-pump CABG group did not have significantly less mean operation time (295+/-73 min vs 323+/-83 min, p=ns) and mean hospital day (15.34+/-6.02 day vs 13.80+/-4.95 day, p=ns). However, off-pump CABG group had significantly shorter mean ventilation time (17.3+/-11.27 hour vs 24.98+/-16.1 hour, p<0.05). No patients were converted to on-pump CABG in off-pump CABG. Intraoperative hemodynamic instability in off-pump CABG were 6 cases, of whom 2 cases were in lateral wall approach and 4 cases in right coronary anastomosis. Postoperative mortality was 1 case in off-pump CABG and 2 cases in on-pump CABG. Intra-aortic ballon pump (IABP) was applied in 1 case with off-pump CABG and in 2 cases with on- pump CABG. No patients presented postoperative cerebral infarction & stroke in off-pump CABG but 2 patients in on-pump CABG. Postoperative arrhythmia presented in 4 cases with off-pump CABG and in 6 cases with on-pump CABG. Acute renal failure (ARF) was complicated in 3 cases with off-pump CABG and in 2 cases with on-pump CABG. CONCLUSION: This study documented the immediate safety and efficiency of the off-pump CABG procedure.

The Short Term Results of the Total Aortic Arch Replacement with Arch First Technique / 대한흉부외과학회지

BACKGROUND: The total aortic arch replacement is one of the most difficult operations with high mortality rate. But the arch first technique with subclavian arterial perfusion has been reported to be a safe methods for arch replacement. MATERIAL AND METHOD: Between Feb 2003 and July 2004, 18 patients, 10 men and 8 women, underwent total aortic arch replacement with arch first technique. Their mean age was 59.3+/-12.9 years. The patietns received 11 acute aortic dissections, 3 chronic aortic dissectiong aneurysms, and 4 ruptured aortic arch aneurysms. RESULT: The mean admission period was 20.2+/-7.4 days. There was one early mortality case which died of low cardiac output syndrome and another late mortality case which died of cerebral hemorrhage. The others were discharged without any sequelae and they were followed up for an average period of 180+/-156.3 days. CONCLUSION: The total aortic arch replacement with arch first technique and subclavian arterial perfusion is a good method that will reduce the surgical mortality and the possibility of secondary late reoperation from the remnant distal aortic problems.

The Short Term Results of the Total Aortic Arch Replacement with Arch First Technique / 대한흉부외과학회지

BACKGROUND: The total aortic arch replacement is one of the most difficult operations with high mortality rate. But the arch first technique with subclavian arterial perfusion has been reported to be a safe methods for arch replacement. MATERIAL AND METHOD: Between Feb 2003 and July 2004, 18 patients, 10 men and 8 women, underwent total aortic arch replacement with arch first technique. Their mean age was 59.3+/-12.9 years. The patietns received 11 acute aortic dissections, 3 chronic aortic dissectiong aneurysms, and 4 ruptured aortic arch aneurysms. RESULT: The mean admission period was 20.2+/-7.4 days. There was one early mortality case which died of low cardiac output syndrome and another late mortality case which died of cerebral hemorrhage. The others were discharged without any sequelae and they were followed up for an average period of 180+/-156.3 days. CONCLUSION: The total aortic arch replacement with arch first technique and subclavian arterial perfusion is a good method that will reduce the surgical mortality and the possibility of secondary late reoperation from the remnant distal aortic problems.

A Case of Surgical Treatment of the Abdominal Aortic Graft Infection with Bilateral Superficial Femoral Vein / 대한흉부외과학회지

The graft infection within the abdomen is a notorious condition, which usually develops serious complications of anastomotic rupture or distal embolism that ended in death. There has been many controversies in the treatment of an aortobiiliac graft infection and varying results have been reported. The authors treated a case of aortobiiliac graft infection after abdominal aortic aneurysm surgery. The operation was performed with re-aortobiiliac bypass using bilateral superficial femoral veins. The result was successful.

The Clinical Experience of the Aortic Arch Replacement in Acute Type A Aortic Dissection / 대한흉부외과학회지

BACKGROUND: The aortic arch replacement in an acute aortic dissection is technically demanding procedure that has a lot of postoperative morbidity and high mortality. The authors have applied several techniques of aortic arch replacement to overcome the risks of the procedure. Therefore we analysed the results of these techniques. MATERIAL AND METHOD: From March of 1996 to July of 2002, we performed 31 cases of the aortic arch replacement in the Stanford type A acute aortic dissection. There were 12 male and 19 female patients with 59.6+/-9.4 years of mean age. Among them 18 cases were treated with the hemiarch replacement and 13 cases with the total arch replacement. We approached the aortic arch through median sternotomy in all but 3 cases of Clamshell incision and applied the deep hypothermic circulatory arrest with retrograde cerebral perfusion. The associated procedures were 2 Bentall's procedures, an axillobifemoral bypass, a femorofemoral bypass and a carotid artery bypass. RESULT: The postoperative morbidities were 8 acute renal failures, 3 CNS complications, 2 low cardiac output syndromes, 2 malperfusion syndromes, and 2 deep wound infections. There were 4 cases of early hospital mortality which were from an acute renal failure, a postoperative bleeding, a low cardiac output syndrome, and a reperfusion syndrome. There were 3 cases of late hospital mortality which were from an acute renal failure, and 2 multiorgan failures. So the total mortality rate was 22.5%. There were 4 cases of late mortality after the discharge, which were form 2 cases of distal anastomotic rupture and 2 cases of intracranial hemorrhage. CONCLUSION: The hemiarch replacement has relatively shorter operative time and lower hospital mortality but higher late mortality than the total arch replacement. The total arch replacement needs more technically demanding procedure.

The Clinical Experience of The Descending Thoracic and Thoracoabdominal Aortic Surgery / 대한흉부외과학회지

BACKGROUND: The thoracic and thoracoabdominal aortic surgery is a complicated procedure that has various method of approach and protection. The authors have performed several methods to treat these diseases. Therefore, we attempt to analyze their results and risks. MATERIAL AND METHOD: From June of 1992 to August of 2001, we performed 26 cases of thoracic aortic surgery and 10 cases of thoracoabdominal aortic surgery. There were 17 aortic dissections, 17 aortic aneurysms, one coarctation of aorta and one traumatic aortic aneurysm. The thoracic aortic replacement was performed under a femorofemoral bypass, an LA to femoral bypass, or a deep hypothermic circulatory arrest. The thoracoabdominal aortic replacement was performed under a femorofemoral bypass or a pump assisted rapid infusion. RESULT: There were 7 renal failures, 11 hepatopathies, 7 cerebral vascular accidents, 2 heart failures, 5 respiratory insufficiencies, and 2 sepsis in postoperative period. There were 9 hospital mortalities which were from 2 bleedings, 2 heart failures, 2 renal failures, a sepsis, a respiratory failure, and a cerebral infarction. There were 3 late deaths which were from ruptured distal anastomosis, cerebral infarction, and pneumonia. CONCLUSION: Deep hypothermic circulatory arrest was not good supportive methods for thoracic aortic replacement. Total thoracoabdominal aortic replacement was a high risk operation.

Clinical Experiences of Pedal Bypass

PURPOSE: Bypasses to the infra-inguinal arteries using autologous vein are now routinely used for limb salvage and as this technique has evolved, the distal limits of revascularization have been extended to near the ankle or in the foot. As the prevelances of chronic renal failure, diabetes and Buerger's disease increased, the more infrapopliteal arterial occlusions were detected. But the safety and effect of pedal bypass was not reported so much in our society. So we studied our cases of ankle bypass to find out its effect on preventing from primary amputation in infrapopliteal arterial occlusive diseases. METHOD: From July 2000 to December 2000, 12 cases of ankle bypasses were performed and followed most of them up to May 2001. The underlying diseases included 6 cases of atherosclerosis obliterance and 6 cases of Buerger's disease. Surgical indications were 9 minor toe gangrene, 2 major gangrene and 1 intractable resting pain. The surgical procedures were 3 popliteo-distal bypasses, 3 popliteo-distal bypasses after femoral thrombectomy, 2 above knee popliteo-below knee popliteo-distal sequential bypasses, 2 combined bypasses of femoro-above knee popliteal bypass and below knee popliteo-distal bypass, and 2 femoro-above knee popliteo-below knee popliteo-distal sequential bypasses. The distal bypass sites were 8 posterior tibial artery (PTA) near medial malleolous, 2 dorsalis pedis (DP) and 2 PTA-DP sequentially. RESULT: There were 2 cases of early occlusion from graft thrombosis and 1 case of late occlusion from inflow embolism. These 3 cases were revised and rebypassed. There was one case of amputation due to deep metatarsal infection. One patient with atherosclerosis died of acute myocardial infarction a month after bypass operation. One patient who underwent bilateral bypass was lost to follow up. The others showed patent graft unil may 2001. 3 patients underwent toe amputation but they didn't have any problem in bipedal ambulation. CONCLUSION: Ankle bypass is safe and promising procedure in infrainguinal arterial occlusive disease.

Surgical Therapy of Stanford Type A Acute Aortic Dissection: Dose intimal tear within replaced aortic segment make any differnce in its clinical characteristics / 대한흉부외과학회지

BACKGROUND: Stanford type A aortic dissection is a sur gical disease which has its intimal tear point somewhere in the aorta. The start ing intimal tear point of the type A aortic dissection has not been a common iss ue in the therapy of the aortic dissection. So we analysed our surgical cases of the type A acute aortic dissection subdivided by the location of intimal tear point. MATERIAL AND METHOD: Between M arch 1991 and July 1999, 40 patients with type A acute aortic dissection underwe nt surgical repair. In 27 patients intimal tear was found within the ascending a orta and aortic arch(Group I), but in 13 patients not found(Group II). All clini cal factors were compared between two groups and analized retrospectively. RESULT: The Group I had more s erious preoperative conditions such as shock, aortic regurgetation, cardiac isch emia and renal failure than the Group II. Group I had more aortic valve abnormal ies. Group II had more hematoma in the false lumen but it had no statistical sig nificance. Group II had more frequent postoperative renal dysfunction than Group I, but Group I had more reoperations from bleeding. The surgical mortality rate was 22.2 % in Group I and 0 % in Group II. CONCLUSION: The patients with ascending aortic intimal tear point had poor preoperative conditions and more ao rtic valve abnormalities, which resulted in the poor postoperative prognosis. Be sides the patients without ascending aortic intimal tear point developed intraop erative malperfusion of distal organ more frequently. Conclusively the prognosis of the patient without intimal tear in ascending aorta was better than that of the patient with intimal tear in ascending aorta.

Clinical Review for the Some Patients of Lung Cancer in Pusan - Kyungnam Area / 대한암학회지

PURPOSE: This study was performed to find out the natural history of lung cancer in Pusan-Kyungnam area and changing of that in previous report. MATERIALS AND METHOD: We studied retrospectively 508 patients with pathologically proven lung cancer from January 1991 to December 1995. We analysed age and sex distribution, initial symptoms before diagnosis, first method yielding histologic diagnosis, cell types of lung cancer, initial stage of lung cancer, schema of overall patients, survivial of lung cancer patients, and prognostic factors affecting survival of lung cancer patients.. RESULTS: The overall male to female ratio was 4.5: 1 and the age distribution ranged from 20 to 86 years, and the median age of overall patients was 60 years. Histologic classification revealed that the most prevalent type was squamous cell carcinoma (251 cases, 49.4%), followed by adenocarcinoma (141 cases, 27.8%), small cell carcinoma (91 cases, 17.9%), and large cell carcinoma (3 cases, 0.6%). In non-smali cell lung cancer 56.8% were stage IIIb and IV, therefore curative operation was done in 18.7% of all cases, but in small cell lung cancer 65.6% were extended disease. Meidan survival of overall patients was 11.8 months. There was a quite difference in survival among the stages. In non-small cell lung cancer, median survival was 59.7 months, 27.3 months, 18.5 months, 12.7 months, 5.9 months in stage I, II, IIIa, IIIb, IV in each. In small cell lung cancer, median survival of limited disese was 12.2 months and median survival of extended disease was 6.7 months. The stage and the performance status were independent prognostic factors in both small cell and non-small cell lung cancer. CONCLUSION: The prognosis of patients with lung cancer was still grave, but the survival was better than that of a previous report. This may be accorded to increase in early diagnosis and operation and advance in supportive care.

Surgical treatment of traumatic subglottic stenosis: A case report / 대한흉부외과학회지

No abstract available.

Sclerosing hemangioma of the lung: a case report / 대한흉부외과학회지

No abstract available.

Bronchogenic cyst causing trachea & bronchus obstruction / 대한흉부외과학회지

No abstract available.

Cabrol operation with cabrol trick in annulo-aortic ectasia / 대한흉부외과학회지

No abstract available.