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Acute respiratory distress syndrome caused by gadolinium: a case report
( Sung Jun Chung ),( Ho Joo Yoon ),( Yoomi Yeo ),( Hyun Lee ),( Tai Sun Park ),( Dong Won Park ),( Ji-yong Moon ),( Sang-heon Kim ),( Tae-hyung Kim ),( Jang Won Sohn ) 대한결핵 및 호흡기학회 2019 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.127 No.0
Acute respiratory distress syndrome (ARDS) is a serious parenchymal lung disease characterized by acute respiratory failure. While various factors can lead to the development of ARDS, many drugs are also suggested to cause ARDS. Gadolinium is a chemical agent, which is used as contrast agents for magnetic resonance imaging (MRI). Here we report a case of gadolinium induced ARDS in a young male adult. A 25-year-old male patient presented to the emergency department of a tertiary university hospital with acute onset dyspnea. On the day of dyspnea onset, he underwent a brain MRI for evaluation of his headache which lasted for three months. Previously, he was healthy and had not taken any medications. Twenty minutes after administration of gadobutrol, a gadolinium- based contrast agent during MRI, he felt short of breath. As dyspnea aggravated over hours, he visited the emergency department of a tertiary university hospital. On physical examination, the respiratory rate was thirty per minute and the breath sound was decreased over the chest. Chest radiographs and CT scan showed bilateral diffuse infiltration of both lungs without cardiomegaly or pleural effusion. Arterial partial pressure of oxygen (PaO<sub>2</sub>) was decreased below 60/ mmHg and the ratio of PaO<sub>2</sub> over the fraction of inspired oxygen was 220 mmHg. He was admitted to the intensive care unit for the treatment of ARDS. As initial therapy, oxygen was administered with a highflow nasal cannula and systemic corticosteroids were given. Over a week of hospitalization and treatment, chest infiltration was recovered and acute respiratory failure was resolved.
Effects of Early Operation in Patients Who Diagnosed Complicated Parapneumonic Effusion
( Sung Jun Chung ),( Hyo Jun Jang ),( Jee Yea Choi ),( Joonkyung Kim ),( Jun Ho Lee ),( Hyun Lee ),( Dong Won Park ),( Sang-heon Kim ),( Jang Won Sohn ),( Hyuck Kim ),( Ho Joo Yoon ),( Won Sang Chung 대한결핵 및 호흡기학회 2020 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.128 No.-
Purpose Thoracic empyema is defined as active suppuration within the pleural space and its treatment is controversial. Recently treatment of empyema is changing observation of empyema formation to early invasive treatment with the operation. This study compared the outcomes of early surgery and delayed surgery Method We retrospectively reviewed 40 patients who underwent surgery for complicated parapneumonic effusion from January of 2013 to May of 2020. The early group was defined as operation with empyema diagnosed within 1 week. Results Among 40 patients, 22 patients received early surgery, and 18 patients received delayed surgery. Stage III empyema was prevalent in the delayed group (27.3% vs 76.9%, p=0.004). Operative time was longer in the delayed group (87.5 vs 132.5 min, p=0.004). Intraoperative blood loss was more in the delayed group (200ml vs 750ml, p=0.009). The hospital stay was longer in the delayed group (18.5 days vs 30.0 days, p<0.001). The complication rate was not different between groups (31.8% vs 33.3%, p=0.919). The mortality rate was no significance between the two groups (4.5% vs 5.6%, p=0.884). Conclusion Delayed surgical treatment make operation difficult. Although inactive infected phase, early surgical treatment did not increase postoperative morbidity and mortality.
Yoon-Young Kim,Sang Heon Oh,Wenxing Pang,Xiaonan Li,Seong-Jin Ji,Eunho Son,Saehee Han,Suhyoung Park,Eeunhe Soh,Hoil Kim,Yong Pyo Lim 한국원예학회 2017 원예과학기술지 Vol.35 No.2
We organized the scientific names of Chinese cabbage according to the International Code of Nomenclature for algae, fungi, and plants (ICN) and the International Code of Nomenclature for Cultivated Plants (ICNCP). We found that the subspecies name ‘Brassica rapa subsp. pekinensis (Lour.) Rupr.’ was suitable as the scientific name for Chinese cabbage, and we classified B. rapa var. glabra Regel. as its synonym. In addition, B. petsai Bailey is an ‘unrecorded name’ not found in the original description, and therefore is not suitable for use. We conclude that all names based on this name are ‘invalid names’, and should not be used.
Totally Laparoscopic Right Hepatectomy in HCC Patients with Portal Vein Anomaly
( Heon Tak Ha ),( Young Seok Han ),( Young Yeon Choi ),( Dae Young Jeon ),( Hyung Jun Kwon ),( Jae Min Chun ),( Sang Geol Kim ),( Yoon Jin Hwang ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Purpose: Laparoscopic right hepatectomy was a challenging procedure, but has been gradually changed to standard approach. Glissonian pedicle approach for hepatic inflow control has been mainly used in laparoscopic right hepatectomy because of the difficulty of separate dissection of portal vein, hepatic artery and bile duct. However, the exact glissonian pedicle approach on laparoscopic field is more difficult procedure in patients with portal vein anomaly. Such an inappropriate hepatic inflow control induces unexpected blood loss and inaccurate hepatic parenchymal transection and especially, the complication risk of left portal vein and the injury risk of hepatic duct may be increased in patients with portal vein anomaly. Methods: We performed totally laparoscopic right hepatectomy in 3 patients with type II or III portal vein anomaly by individual hepatic inflow dissection. Results: After ligation of right hepatic artery, the meticulous dissection of right posterior and anterior portal vein was performed and the inflow control can be accomplished by the clipping or ligation along with the confirmation of portal vein anomaly. In order to avoid the injury of hepatic duct, the remnant right anterior and posterior portal pedicles were respectively ligated at the distal site of separate portal vein clamping after the completion of liver parenchymal dissection. Postoperative imaging study illustrated the exact transection of portal tract. Conclusion: In summary, totally laparoscopic right hepatectomy in patients with portal vein anomaly is not feasible and safe procedure without the complete dissection of right portal tract. Therefore, the inflow control by separate portal vein dissection is more useful option than blunt hepatic glissonian pedicle approach for prevention of portal tract injury in our opinion.
( Sang A Choi ),( Seung Geun Lee ),( Sang Heon Song ),( Ji Min Kim ),( Hye Yoon Jang ),( Woo Jin Jung ),( Jong Hyun Choi ),( Young Eun Park ),( Seong Hu Park ),( Joung Wook Lee ),( Jun Hee Lee ),( Seu 대한류마티스학회 2013 대한류마티스학회지 Vol.20 No.6
Treatments for patient with ankylosing spondylitis (AS) include non-steroidal anti-inflammatory drugs (NSAIDs), disease-modifying antirheumatic drugs (DMARDs) and anti-tumor necrosis factor-alpha (TNFα) agents. However, owing to the well-known nephrotoxicity of NSAIDs and some DMARDs, the use of these drugs is limited in AS patients with renal insufficiency. As the pharmacokinetics and metabolism of anti-TNFα agents in patients of end stage renal disease, especially those receiving peritoneal dialysis (PD), have not been investigated well, little is known about treating them with anti-TNFα agents. We described the safety and efficacy of etanercept, a soluble fusion protein comprising the TNF receptor 2 in linkage with the Fc portion of immunoglobulin G, in a 40-year-old male AS patient receiving PD.
Yoon, Ji-Yong,Woo, Sung-Il,Kim, Heon,Sun, Yong-Han,Hahn, Youn-Soo The Korean Pediatric Society 2012 Clinical and Experimental Pediatrics (CEP) Vol.55 No.9
Purpose: Fractional exhaled nitric oxide (FeNO) and forced expiratory flow between 25% and 75% of vital capacity ($FEF_{25-75}$) are not included in routine monitoring of asthma control. We observed changes in FeNO level and $FEF_{25-75}$ after FeNO-based treatment with inhaled corticosteroid (ICS) in children with controlled asthma (CA). Methods: We recruited 148 children with asthma (age, 8 to 16 years) who had maintained asthma control and normal forced expiratory volume in the first second ($FEV_1$) without control medication for ${\geq}3$ months. Patients with FeNO levels >25 ppb were allocated to the ICS-treated (FeNO-based management) or untreated group (guideline-based management). Changes in spirometric values and FeNO levels from baseline were evaluated after 6 weeks. Results: Ninety-three patients had FeNO levels >25 ppb. These patients had lower $FEF_{25-75}$ % predicted values than those with FeNO levels ${\leq}25$ ppb (P<0.01). After 6 weeks, the geometric mean (GM) FeNO level in the ICS-treated group was 45% lower than the baseline value, and the mean percent increase in $FEF_{25-75}$ was 18.7% which was greater than that in other spirometric values. There was a negative correlation between percent changes in $FEF_{25-75}$ and FeNO (r=-0.368, P=0.001). In contrast, the GM FeNO and spirometric values were not significantly different from the baseline values in the untreated group. Conclusion: The anti-inflammatory treatment simultaneously improved the FeNO levels and $FEF_{25-75}$ in CA patients when their FeNO levels were >25 ppb.
COVID-19 Vaccine Induced Systemic Inflammatory Response Syndrome
( Sang-heon Kim ),( Soo Jin Lee ),( Sung Jun Chung ),( Yoomi Yeo ),( Hyun Lee ),( Tai Sun Park ),( Dong Won Park ),( Ji-Yong Moon ),( Tae-hyung Kim ),( Jang Won Sohn ),( Ho Joo Yoon ) 대한결핵 및 호흡기학회 2021 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.129 No.-
To protect people from coronavirus disease 2019 (COVID-19), various types of vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have been developed and administered. Adverse reactions to COVID-19 vaccines include various local and systemic adverse reactions which may occur immediately or weeks later. Here we report a case of systemic inflammatory response syndrome induced by COVID-19 vaccine. A 65-year-old man with a history of hypertension presented with 5 days of fever. On admission, he was febrile to 38.3℃ with mild dyspnea when experiencing febrile sensation. Six days ago, he was vaccinated with the BNT162b2 mRNA COVID-19 vaccine. Fever with chill developed one day after vaccination and persisted. Chest radiography and a CT scan showed bilateral pleural effusion. Abdomen CT showed interstitial edematous pancreatitis at pancreas tail and perinephric infiltration. PET/CT revealed diffuse hypermetabolic infiltration or activity in mediastinal fat tissue, pericardial and peritoneal thickening. Laboratory Results documented leukocytosis, elevated levels of aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, and C-reactive protein. There was no evidence of possible infectious diseases or rheumatic diseases after a full examination and consultation with the specialists. With the administration of high-dose oral corticosteroids, fever and pleural effusion disappeared gradually. These findings suggest systemic inflammatory response syndrome induced by COVID-19 mRNA vaccine.
Magnetically Suspended Contact-Free Linear Actuator for Precision Stage
Sang Heon Lee,Yoon Su Baek 대한기계학회 2003 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.17 No.5
With the development of precision manufacturing technologies, the importance of precision positioning devices is increasing. Conventional actuators, dual stage or mechanically contacting type, have limitation in coping with performance demands. As a possible solution, magnetic suspension technology was studied. Such a contact-free system has advantages in terms of high accuracy, low production cost and easy adaptability to high precision manufacturing processes. This paper deals with magnetically suspended multi-degrees of freedom actuator which can realize large linear motion. In this paper, the operating principle is explained with the magnetic force analysis, and the equations of motion are derived. Experimental results of the implemented system are also given.