Background: Atrioventricular valve regurgitation in pediatric patients with a functional single ventricles (FSV) - has been known as one of the important risk factors for death and unfavorable long-term results after a Fontan operation. We evaluated early and mid-term results of bivalvation valvuloplasty in FSV patients. Material and Method: We retrospectively evaluated 11 patients with a functional single ventricle who underwent bivalvationvalvuloplasty between 1999 and 2007. The degree of common atrioventricular valve regurgitation (CAVVR) was determined by color Doppler echocardiography (regurgitation grade scoring, trivial; 1, mild; 2, moderate; 3, severe; 4). Mean age at valve surgery was $6.9{\pm}7.0$ months (median 4 months, 24 days$\sim$21 months)and mean body weight was $6.2{\pm}2.8\;kg$ ($3.1{\sim}11.3\;kg$). Nine patients had isomerism heart and two of them had TAPVC. The concomitant procedures were performed in all but one patient. Additional commissural closure was performed in 3 patients and commissural annuloplasty in another 3 patients. Result: There was one hospital death after. surgery. A 32-day old patient who had been preoperatively dependent on a ventilator died of air way and lung problems 4.3 months after pulmonary artery banding and bivalvation valvuloplasty. Mean follow-up duration was 40 months ($4.3{\sim}114$ months). Mean preoperative CAVVR score was $3.3{\pm}0.6$, which decreased to $1.9{\pm}0.7$ postoperatively (p<0.0001). This residual regurgitation slightly increased to $2.2{\pm}0.4$ (no statistical significance) after a mean follow-up of 1.4.3 months. Six patients (60%) required re-operations for residual regurgitation at a subsequent bidirectionalcavopulmonary shunt or Fontan operation. One patient with Ebsteinoid malformation of the right sided atrioventricular valve required valve replacement due to stenoinsufficiency. Another patient required edge-to-edge repair at the right sided AV valve (between the right mural leaflet and the bridging leaflets). The remaining 4 patients required additional suture placements between bridging leaflets with or without commissural annuloplasty. All survivor had trivial or mild CAVVR at the latest follow-up. Conclusion: Bivalvation valvuloplasty for CAVVR in FSV patients is. an effective and safe procedure. However, significant numbers of the patients have small residual regurgitation and require additional valve procedures at subsequent operations. Long-term observations to monitor progression of the CAVVR is mandatory.
Background: There have been several reports using animal experiments that CD1-restricted T-cells have a key role in tumor immunity. To address this issue, we studied the expression of markers for CD1c+ myeloid dendritic cells (DCs) isolated from peripheral blood in the clinical setting. Material and Method: A total of 24 patients with radiologically suspected or histologically confirmed lung cancer who underwent pulmonary resection were enrolled in this study. The patients were divided according to histology findings into three groups: primary adenocarcinoma of lung (PACL), primary squamous cell carcinoma of lung (PSqCL) and benign lung disease (BLD). We obtained 20 mL of peripheral venous blood from patients using heparin-coated syringes. Using flow-cytometry after labeling with monoclonal antibodies, data acquisition and analysis were done. Result: The ratio of CD1c+CD19- dendritic cells to CD1c+ dendritic cells were not significantly different between the three groups. CD40 (p=0.171), CD86 (p=0.037) and HLA-DR (p=0.036) were less expressed in the PACL than the BLD group. Expression of CD40 (p=0.319), CD86 (p=0.036) and HLA-DR (p=0.085) were less expressed in the PACL than the PSqCL group, but the differences were only significant for CD86. Expression of co-stimulatory markers was not different between the PSqCL and BLD groups. Expression of markers for activated DCs were dramatically lower in the PACL group than in groups with other histology (CD40 (p=0.005), CD86 (p=0.013) HLA-DR (p=0.004). Conclusion: These results suggest the possibility that CD1c+ myeloid DCs participate in control of the tumor immunity system and that low expression of markers results in lack of an immune response triggered by dendritic cells in adenocarcinoma of the lung.
Song, Gi Seon;Lee, You-Rim;Kim, Sungmin;Kim, Wontae;Choi, Jungwon;Yoo, Dahyeon;Yoo, Jungyoung;Jang, Kyung-Tae;Lee, Jaewang;Jun, Jin Hyun
Korean Journal of Clinical Laboratory Science
/
v.52
no.3
/
pp.284-295
/
2020
In December 2019, the first coronavirus disease- 2019 (COVID-19) patient was reported in Wuhan, Hubei Province, China. Since then, the number of patients who suffered severe acute respiratory syndrome caused by the novel Coronavirus (SARS-CoV-2 or 2019-nCoV) has increased dramatically in Korea. This new variant virus induces pulmonary diseases, including cough, sore throat, rhinorrhea, dyspnea, and pneumonia. Because SARS-CoV-2 is an RNA virus, real-time reverse-transcriptase PCR has been used widely to diagnose COVID-19. As the Korea Centers for Disease Prevention and Control (KCDC) and Ministry of Food & Drug Safety (MFDS) approved emergency use authorization, clinical specimens collected from COVID-19 patients and even healthy people have been clinically diagnosed by laboratory medicine. Based on a literature search, this paper reviews the epidemiology, symptoms, molecular diagnostics approved by KCDC, a current diagnosis of COVID-19 in the laboratories, the difference between molecular and serological diagnosis, and guidelines for clinical specimens. In addition, the Korean guidelines of biosafety for clinical laboratory scientists are evaluated to prevent healthcare-associated infection. The author's experience and lessons as clinical laboratory scientists will provide valuable insights to protect the domestic and international health community in this COVID-19 pandemic around the world.
Objectives : Since Mountain proposed the new staging system of non-small cell lung cancer in 1986, the indications for operation of NSCLC have been extended. However, operative mortality is from 3 to 6%. Therefore it is important to reduce unnecessary operation and to evaluate unresectability of tumor correctly, preoperatively. The purpose of this study is to find out the causes of unresectability in patients who were initially thought to be resectable preoperatively. Methods : By retrospective analysis, 64 patients out of 291 NSCLC patients who were undergone operation for curative resection in Seoul National University Hospital from Jan. of 1987 to Dec. of 1991, were found to be unresectable at operating room, were selected for this study. Out of 64 patients, 42 were evaluable. The analysis was focused on the change of pre- & post-operative staging and the causes of unresectability of tumors. Results : Among 42 patients with unresectable tumor who could be evaluated, preoperative CT finding showed resectable tumors in 55%(23 patients) and suspicious for unresectable tumors in 45%(19 patients). The causes of unresectability were technically unresectable T3 lesions in 7%(3 patients), T4 lesions in 62%(26 patients), N2 lesions in 17%(7 patients) and N3 lesions in 14%(6 patients). Conclusion : The major causes of unresectability of NSCLC were pulmonary artery invasions. It is suggested that careful evaluation of mediastinal structure, especially great vessels by additional imaging technique other than CT(like MRI) is indicated in selected NSCLC cases.
Park, Moon-Hwan;Yun, Sang-Won;Kim, Kung-Ho;Lee, Mung-Sun;Cho, Dong-Ill;Rhu, Nam-Soo
Tuberculosis and Respiratory Diseases
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v.41
no.4
/
pp.405-412
/
1994
Background: In Korea, the prevalence of tuberculosis and hepatitis is high, and combined therapy with rifampicin and pyrazinamide is used in tuberculosis, so drug induced hepatitis is not only problem of tuberculosis therapy but also cause of treatment failure. However most of recent reports on drug induced hepatitis during antituberculosis medication have dealt with its pathogenesis and have stressed the biochemical, and histopathological aspects of the disorder, whereas this study was designed primarily to provide information on the clinical features. Method: The subjects of study were 1414 patients treated with antituberculosis drugs on the department of chest medicine at National Medical Center during the 5-year 6-month period from January 1, 1988, to June 30, 1993. Retrospective analysis of clinical features for the 29 patients who developed drug induced hepatitis was done. Results: 1) The incidence of antituberculosis drug induced hepatitis was 2.1%. 2) Male to fema1e ratio of antituberculosis drug induced hepatitis was 2:1, but case rates among males and females were not significantly different. 3) Rates of drug induced hepatitis according to age distribution shows the most common incidence between 35 to 49 year old age group, but rates among groups of age were not significant1y different. 4) Drug induced hepatitis was most common in the case of moderate advanced pulmonary tuberculosis(rate is 2.78%), but rates among types of tuberculosis were not significant1y different. 5) 18 cases(62%) of antituberculosis drug induced hepatitis patients had no signs or symptoms. In remaining cases, they were nausea, vomiting, jaundice, hepatomegaly, icteric sclera, right upper quadrant tenderness in order. 6) 22 cases(76%) of antituberculosis drug induced hepatitis cases had occured within the first month. 7) The duration of abnormal liver function was $28{\pm}5$(Mean${\pm}$SD), ranged from 5 days to 180 days. 8) One case of antituberculosis drug induced hepatitis died. 9) The levels of abnormal GOT ranged from 64 to 1055U/L and GPT from 68 to 931U/L. Conclusion: There are no dicided predisposing factors of antituberculosis drug induced hepatitis, so it should be done biochemical monitoring as well as close monitoring for overt signs or symptoms of hepatitis to avoid the development of irreversible hepatic reaction, especially at the treatment of the first month.
Background: Bronchioloalveolar cell carcinoma today needs further studies as an early diagnosis will drastically improve the chances of cure. Methods: Twenty-four cases of bronchioloalveolar cell carcinoma for the period of 5 years were studied in terms of incidence, age, sex, underlying diseases, symptoms, radiographic findings, methods of diagnosis, clinical and pathologic staging, methods of treatment, and survival retrospectively. Results: No correlation was found between patients' age, sex and underlying diseases. Most common symptoms were cough(62.5%), chest pain(29.2%), and sputum(29.2%). Of the 24 cases, 13 patients(54.2%) had solitary nodule, 6 patients(25%) had multiple nodules. At the time of diagnosis, 3 patients(12.5%) had the stage I diseases, 3 patients(12.5%) had the stage II diseases, 4 patients(16.7%) had the stage IIIa diseases, 3 patients(12.5%) had the stage IIIb diseases, and 11 patients(45.8%) had the stage IV diseases. 14 cases(58.3%) were found inoperable at the time of admission; they all died within 17 months. In 7 cases with stage I, II, IIIa diseases curative resection were attempted, in 1 case with stage IV disease wedge resection for palliative management was performed, and in 4 cases patients were still alive at the time of conclusion of this study. Conclusion: We conclude that early diagnosis of disease will increase operability and improve chances of survival and that aggressive diagnostic workup for suspicious pulmonary infiltrate is essential as early operation offers the best chances of cure.
Background: Physician's estimates of patient survival often influence clinical decisions, especially those near the end of life. In addition. clinical decisions frequently reflect trade-offs between morbidity and length of survival. As a result, accurate estimates of survival can be extremely useful in clinical decision. When the episode of acute respiratory failure in chronic obstructive lung disease, evaluation of the severity of the condition and short term prognosis is difficulit based on the available clinical or paraclinical data at the time of admission. Method: In this study, we performed a retrospective study in Chung Ang University Hospital, 74 patients (51 males, 23 females), who were hospitalized with chronic obstructive lung disease with acute respiratory failure from 1980 to 1992. We evaluated these patients to determine lung prognostic factors at time of admission in the Intensive Care Unit (ICU) that predict short term survival, and to determine the possible application of the Simplified Acute Phsiology Score (SAPS) to this population, All patients were treated with similar regimen during the hospitalization. Results: The results were as follows: 1) Hospital mortality was 34%(25/74 patients) and surival rate was 66%(49/74 patients) in COPD with acute respiratory failure. The prognosis of the older age was much poorer than those of the young age. 2) There was no difference in mortality according to the results of basal pulmonary test and arterial blood gas analysis. 3) The SAPS at admission was higher in those patients who expired(10.8) than the survived(6.5), and there was positive correlation between SAPS and mortality (r=0.91, p<0.05). 4) Prognostic factors in acute respiratory failure complicating COPD which were identifiable at time of admission to the ICU were as follows: cachexia, encephalopathy, serum creatinine and phosphate. Conclusion: In conclusion, the SAPS might have a good prognostic value for determination of short term survival among chronic obstructive lung disease with acute respiratory failure.
Background: Lymphangioleiomyomatosis(LAM) is a very rare disease occurring in women of reproductive age and leading to progressive respiratory failure despite therapy. But the natural history of this disease is uncertain and although anti-estrogenic agents have been used for more than twenty years, it's efficacy is still in debate. This study was performed to enhance understanding of this fatal disease in Korea by examining clinical, radiological, and pathologic findings of all the previously reported cases of LAM on Korea along with four new cases of LAM whom we report in this paper. Method: Out of twlve cases of LAM previously unpublished and published in domestic papers, two cases whose diagnoses were considered doubtful after review of clinical, radiological, and pathologic findings at "Asian Congress on Lymphangioleiomyomatosis" at Kyoto, Japan in feburary of 1993 were excluded from this study. Six cases which were reported previously and four new cases of LAM whom we report in this paper were analysed for the clinical, radiological, and pathologic characteristics. Results: All ten patients were women with mean age of $33{\pm}7$. The most common symptom was exertional dyspnea and most patients had history of pneumothoraces. Pulmonary function tests showed decreased diffusing capacity. on high resolution computed tomography(HRCT), all the cases had characteristic cysts. Most of the patients did not respond to hormonal therapy. Conclusion: In women of reproductive age, presenting with dyspnea who has a history of pneumothorax, LAM should always be considered as one of the diagnostic possibilities. If suspected, HRCT should be done to look for characteristic cysts and if needed, open lung biopsy should be done to confirm the diagnosis.
Background : Sustained-release theophylline, which is generally prescribed as a twice-daily equal-dose regimen, is one of the more common asthma treatments. The development of a sustained-release drug delivery technology that enables improved control of the theophylline blood levels represents a significant advancement in both the efficacy and safety of dosing. Method : A crossover study was conducted with 25 adult chronic asthmatic patients requiring daily bronchodilator therapy. The study group included thirteen males and twelve females with ages ranging from 19 to 71 years. The overall approach was to place the patients first on the twice-daily preparation($Etheophyl^{(R)}$) for 28 days at 8 AM and 8 PM, and measure the pulmonary function and theophylline level on the 28th day. The patients were subsequently switched to the once-daily preparation($Uniphyl^{(R)}$) in the same daily dose at 8 PM on the 29th day and the same parameters were measured on the 56th day. Results : The mean serum levels of theophylline were $8.18{\pm}1.66\;{\mu}g/ml$ in the $Etheophyl^{(R)}$-treated period and $8.00{\pm}1.75\;{\mu}g/ml$ in the $Uniphyl^{(R)}$-treated period. ln addition, the $FEV_1$ showed $71.40{\pm}7.48$ percent in the $Etheophyl^{(R)}$-treated and $69.18{\pm}9.00$ percent in the $Uniphyl^{(R)}$-treated period. Thus there were no significant differences between the once-daily and twice-daily preparation. Conclusion : The results indicated little clinical differences between the two medications. The two drugs are equally effective in controlling asthma over the four weeks of treatment.
Bak, Ji Young;Kim, Kwang Sil;Park, I-Nae;Yum, Ho-Kee;Lee, Seung Heon;Lee, Hyun-Kyung;Lee, Young Min;Jung, Hoon;Hur, Jin-Won;Lee, Seong Soon;Lee, Hyuk Pyo;Choi, Soo Jeon;Shin, Eun Ah;Choi, Sang Bong
Tuberculosis and Respiratory Diseases
/
v.66
no.1
/
pp.37-41
/
2009
Hot tub lung has been described as a pulmonary illness associated with exposure to nontuberculous mycobacteria,mainly hot bathtub water contaminated with Mycobacterium avium complex (MAC) and hence the name. Although not entirely clear, its etiology has been thought to involve either an infection or a hypersensitivity pneumonitis secondary to MAC. Herein, we describe 2 female patients (60 and 53 years old) admitted to our hospital with hot tub lung, and both of whom worked in a public bath. Both women were initially admitted following several months of exertional dyspnea and cough. The patients had been working as body-scrubbers in a public bath for several years. Their chest CT scans showed bilateral diffuse ground-glass opacities with multifocal air-trappings and poorly defined centrilobular nodules in both lungs. Pathological findings from lung specimens revealed small non-necrotizing granuloma in the lung parenchyme with relatively normal-looking adjacent alveoli. Discontinuation of working in the public bath led to an improvement in symptoms and radiographic abnormalities, without antimycobacterial therapy.
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