Short Term Results of Endovenous Laser Treatment with Ultrasound Guided Ligation of the Sapheno-femoral Junction or Sapheno-popliteal Junction in Patients with Varicose Vein

PURPOSE: The main cause of recurrence of varicosity after endovenous laser treatment (EVLT) is incomplete occlusion of the sapheno-femoral junction (SFJ) or the sapheno-popliteal junction (SPJ). To reduce the recurrence and complications of EVLT, we have tried to ligate the SFJ or SPJ under ultrasonic guidance. METHOD: Two separate parallel punctures were made under ultrasonic guidance 1 cm inferior to and alongside the SFJ or SPJ with using a 16 gauge needle. A hook was passed through beneath the saphenous vein and it was pulled out through the puncture holes. A black silk thread was passed through backward with the hook and then the thread was tied. Low energy EVLT was then performed in a continuous fashion with using a 980 nm multidiode laser. RESULT: Between December, 2007 and February, 2008, 21 patients (males: 14, females: 7, 28 legs, mean age: 45 years old) with including 20 great saphenous veins (GSV) and 8 small saphenous veins (SSV) were managed using our protocol. The mean energy density (ED) was 9.8J/cm for the GSV and 9.5J/cm for the SSV. The pullback speed on the fiber was 69.5 sec at the GSV and 28sec at the SSV. No recurrence was noted. The complications were bruise (7 limbs/24%), fibrotic cord (4 limbs/14%), pain (8 limbs/31%), inguinal pain and paresthesia (1 limb/3%) and hematoma (4 limbs/14%). These complications were well controlled without any further problems. CONCLUSION: During EVLT, ultrasound (US) guided ligation of the SFJ is cosmetically satisfactory and effective in reducing the amount of required endovenous laser energy. The complication rate and severity were not reduced, but they under control.

Surgical Resection of Renal Cell Carcinoma Extended to the Inferior Vena Cava Using Pump Driven Veno-venous Bypass / 대한흉부외과학회지

In a 46 year-old man who has complained of epigastric pain and dyspnea for 10 days including melena for 1 month, abdominal ultrasonography and computerized tomography revealed a large, solid mass in the right kidney and thrombus of inferior vena cava (IVC) that extended to the cavoatrial junction. Renal cell carcinoma was performed by percutaneous needle biopsy. IVC thromboembolectomy was performed using centrifugal pump driven veno-venous bypass without cardiac arrest and cardiopulmonary bypass (CPB).

An Unusual Case of Todd's Paralysis Mimicking Large Cerebral Infarction after Open Heart Surgery / 대한흉부외과학회지

Improved operative, anesthetic, and cardiopulmonary bypass (CPB) techniques have significantly reduced postoperative complications; however, neurologic disorders remain a serious complication after open heart surgery. Possible explanations for neurologic complications are microembolism from CPB, decreased cerebral perfusion pressure due to intraoperative hypotension and unexpected metabolic changes. Amomg these, seizure has low incidence and Todd`s paralysis after open heart surgery is extremely rare. Todd's paralysis is a complication of a seizure due to neuronal exhaustion mimicking large cerebral infarction after open heart surgery.

Analysis of Complications Associated with the Nuss Procedure: Risk Factors and Preventive Measures / 대한흉부외과학회지

BACKGROUND: Since the Nuss procedure for the correction of pectus excavatum is in its early stage, there have been problems that need to be solved. We examined complications in a single-institute experience of the Nuss technique in order to develop possible solutions to prevent them. MATERIAL AND METHOD: 335 consecutive patients, who underwent the modified Nuss procedure between August 1999 and October 2002, were studied retrospectively. Median age was 8 years (range 1 to 46). 264 patients (78.8%) were in pediatric group (age15). 193 patients (57.6%) had symmetric and 142 patients (42.4%) had asymmetric pectus configurations. Risk factors predicting postoperative complications were analyzed using multivariate logistic regression. RESULT: Postoperative complication rates were 18.9% (61/335) in total patients. Frequent complications were pneumothorax 24 (7.5%), bar displacement 11 (3.4%), and wound seroma 10 (3.1%) in order. Early complications (within a month, 49 cases, 15.2%) were pneumothorax (n=23, 6.9%), wound seroma (n=12, 3.6%), and bar displacement (n=8, 2.4%). Late complications (after a month, 12 cases, 3.7%) were pericarditis and pericardial effusion (n=5, 1.5%), bar displacement (n=4, 1.2%), and hemothorax (n=3, 0.9%). Techniques were modified to prevent complications especially in bar shaping and fixation, which led to decrease complication rate in later experience (Operation Date 1: 15/51 (29.4%) vs Operation Date 2: 34/284 (12.0%), p=0.004). Grand Canyon type (eccentric long canal type) showed higher complication rate than other types (GC type: 12/30(40%) vs Others: 37/305 (12.1%), p<0.001). Major risk factors are severity of pectus (OR=2.88, p=0.038), Grand Canyon type (OR= 2.82, p=0.044), and Op. Date 1 (OR=4.05, p=0.001). CONCLUSION: Major complications were related to severe eccentric type of pectus configuration (Grand Canyon type) and lack of surgeon's experience (Op. Date 1). Complication rate was reduced with accumulation of experience and advancement of surgical techniques. The Nuss procedure can be performed at a low risk of complications with our current technique.

Minimally Invasive Repair of Pectus Excavatum Based on the Nuss Principle: An Evolution of Techniques and Early Results on 322 Patients / 대한흉부외과학회지

BACKGROUND: The Nuss procedure is a recently developed technique for minimally invasive repair of pectus excavatum using a metal bar. Although its technical simplicity and cosmetic advantages are remarkable, applications have been limited to children with standard pectus excavatum. We report a single center experience of the technique that has been evolving in order to correct asymmetric pectus configurations and adult patients. MATERIAL AND METHOD: Between August 1999 and June 2002, 322 consecutive patients underwent repair by the Nuss technique and its modifications. Among them, 71 (22%) were adults. For the precise correction, morphology of the pectus was classified as symmetric and asymmetric types. Asymmetric type was subdivided into eccentric and unbalanced types. In repair, differently shaped bars were applied to individual types of pectus to achieve symmetric correction. RESULT: Symmetric type was 57.5% (185/322) and asymmetric type was 42.5% (137/322). Eccentric, unbalanced, and combined types were 71, 47 and 19, respectively. Major modifications were bar shaping and fixation. In asymmetric group, different shapes of asymmetric bars were applied (n=125, 38.8%). For adult patients, double bar or compound bar technique was used (n=51, 15.8%). To prevent bar rotation, multipoint wire fixations to ribs were used. Major postoperative complications were pneumothorax (n=24, 7.5%) and bar displacement (n=11, 3.4%). 42 patient had bar removal 2 years after the initial procedure. CONCLUSION: The Nuss procedure is safe and effective.Modifications of the techniques in accordance with precise morphological classification enabled the correction of all variety of pectus excavatum including asymmetric types and adult patients.

Analysis of Risk Factors in Poststernotomy Sternal Wound Infection and Mediastinitis after Open-heart Surgery / 대한흉부외과학회지

BACKGROUND: With the purpose of identifying significant risk factors in poststernotomy sternal wound infection and mediastinitis, we underwent a retrospective analysis of the whole patients operated on at the our department of cardiovascular surgery for the two years. MATERIAL AND METHOD: From March 2001 to March 2003 at the department of cardiovascular surgery, medical school of Soonchunhyang University, major sternal wound infections had been developed in 12 (9.76%) of 123 consecutive patients. These patients underwent open-heart procedure through a midline sternotomy and survived long enough for infection to appear. For this group of patients, we evaluated possible risk factors such as age, sex, diabetes mellitus, chronic obstructive pulmonary disease, obesity, interval between hospital admission and operation, type of surgical procedure, elective or emergency surgical procedure, reoperation, duration of surgical procedures, duration of cardiopulmonary bypass, amount of blood transfused, postoperative blood loss, chest reexploration, rewiring of a sterile sternal dehiscence, duration of mechanical ventilation, and days of stay in the intensive care unit and analyzed these factors. RESULT: Analysis represented that age, sex, diabetes mellitus, type and mode of surgical procedure, reoperation, duration of operation, duration of cardiopulmonary bypass, and interval between hospital admission and operation were not significantly associated with wound infection. For all other predisposing factors, p-values of less than .05 were demonstrated. Eight emerged as significant: early chest reexploration (p=0.001), sternal rewiring (p<0.0001), chronic obstructive pulmonary disease (p<0.0001), blood transfusions (p<0.05), postoperative bleeding (p=0.008), days of stay in the intensive care unit (p<0.0001), duration of mechanical ventilation (p=0.001), and obesity (p=.003). CONCLUSION: Contamination of patients may occur before, during, and after the operation, and any kind of reintervention may predispose the patient to wound infection.