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| 1 | Effect of metronome rates on the quality of bag-mask ventilation during metronome-guided 30:2 cardiopulmonary resuscitation:A randomized simulation study显示文摘BACKGROUND: Metronome guidance is a feasible and effective feedback technique to improve the quality of cardiopulmonary resuscitation(CPR). The rate of the metronome should be set between 100 to 120 ticks/minute and the speed of ventilation may have crucial effect on the quality of ventilation. We compared three different metronome rates(100, 110, 120 ticks/minute) to investigate its effect on the quality of ventilation during metronome-guided 30:2 CPR.METHODS: This is a prospective, randomized, crossover observational study using a Respi Trainer r. To simulate 30 chest compressions, one investigator counted from 1 to 30 in cadence with the metronome rate(1 count for every 1 tick), and the participant performed 2 consecutive ventilations immediately following the counting of 30. Thirty physicians performed 5 sets of 2 consecutive(total 10) bag-mask ventilations for each metronome rate. Participants were instructed to squeeze the bag over 2 ticks(1.0 to 1.2 seconds depending on the rate of metronome) and defl ate the bag over 2 ticks. The sequence of three different metronome rates was randomized.RESULTS: Mean tidal volume significantly decreased as the metronome rate was increased from 110 ticks/minute to 120 ticks/minute(343±84 m L vs. 294±90 m L, P=0.004). Peak airway pressure significantly increased as metronome rate increased from 100 ticks/minute to 110 ticks/minute(18.7 vs. 21.6 mm Hg, P=0.006).CONCLUSION: In metronome-guided 30:2 CPR, a higher metronome rate may adversely affect the quality of bag-mask ventilations. In cases of cardiac arrest where adequate ventilation support is necessary, 100 ticks/minute may be better than 110 or 120 ticks/minute to deliver adequate tidal volume during audio tone guided 30:2 CPR. | Ji Ung Na Sang Kuk Han Pil Cho Choi Dong Hyuk Shin | 2017 | World Journal of Emergency Medicine2017，8，2： | 12 |
| 2 | Effect of gadolinium incorporation on optical characteristics of YNbO_4:Eu^(3+) phosphors for lamp applications显示文摘Eu3+-doped (Y,Gd)NbO4 phosphor was synthesized by solid-state reaction for possible application in cold cathode fluorescent lamps. A broad absorption band with peak maximum at 272 nm was observed which was due to the charge transfer between Eu3+ ions and neighboring oxygen anions. A deep red emission at the peak wavelength of 612 nm was observed which could be attributed to the 5D0→7F2 transition in Eu3+ ions. The highest luminance for Y1-x-yGdyNbO4:Eux3+ under 254 nm excitation was achieved at Eu3+ concentration of 18 mol.% (x=0.18) and Gd3+ concentration of 8.2 mol.% (y=0.082). The luminance of Y0.738Gd0.082NbO4:Eu3+0.18 was higher than that of a typical commercial phosphor Y2O3:Eu3+ and the CIE chromaticity coordinate was (0.6490, 0.3506), which was deeper than that of Y2O3:Eu3+. The particle size of the synthesized phosphors was controlled by the NaCl flux and particle size as high as 8 μm with uniform size distribution of particles was obtained. | Sung Hwan Choi G. Anoop Dong Wook Suh Kyung Pil Kim Hyun Ju Lee Jae Soo Yoo | 2012 | Journal of Rare Earths2012，30，3： | 7 |
| 3 | Gastric inverted hyperplastic polyp: A rare cause of iron deficiency anemia显示文摘Gastric inverted hyperplastic polyp(IHP) is a rare gastric polyp characterized by the downward growth of hyperplastic mucosal components into the submucosal layer. Macroscopically, a gastric IHP resembles a subepithelial tumor(SET); as a result, accurately diagnosing gastric IHP is difficult. This issue has clinical significance because gastric IHP can be misdiagnosed as SET or as malignant neoplasm In addition, adenocarcinoma can accompany benign gastric IHP. Although in most cases, gastric IHPs are asymptomatic and are found incidentally, these polyps may cause anemia secondary to chronic bleeding. Here, we report one case involving gastric IHP accompanied by chronic iron deficiency anemia that was successfully managed using endoscopic submucosal dissection. | Jin Tak Yun Seung Woo Lee Dong Pil Kim Seung Hwa Choi Seok-Hwan Kim Jun Kyu Park Sun Hee Jang Yun Jung Park Ye Gyu Sung Hae Jung Sul | 2016 | World Journal of Gastroenterology2016，22，15： | 5 |
| 4 | Differential diagnoses of magnetic resonance imaging for suspected acute appendicitis in pregnant patients显示文摘BACKGROUND: Accurate and timely diagnosis of acute surgical disease in pregnant patient is chal enging. Although magnetic resonance imaging(MRI) is the most accurate modality to diagnose acute appendicitis in pregnant patients, it is often used as a last resort because of high cost and long scan time. We performed this study to analyze differential diagnoses of appendix MRI and to investigate if there are any blood tests that can predict surgical condition in pregnant patients.METHODS: A retrospective, cross-sectional study was conducted on 46 pregnant patients who underwent non-enhanced appendix MRI in suspicion of acute appendicitis from 2010 to 2016. Differential diagnoses of appendix MRI were analyzed and blood tests were compared between those who had surgical and non-surgical disease.RESULTS: Appendix MRI differentiated two surgical disease; acute appendicitis and ovarian torsion; and various non-surgical conditions such as uterine myoma, hydronephrosis, ureterolithiasis and diverticulitis among clinically suspected acute appendicitis in pregnancy. The diagnostic accuracy of MRI for acute appendicitis in this study was 93.5%. Patients who had surgical disease showed significantly higher WBC count(≥11,000/mm^3), proportion of neutrophils in the WBC(≥79.9%), neutrophil-to-lymphocyte ratio(NLR≥6.4), levels of C-reactive protein(CRP≥1.82 mg/dL) and bilirubin(≥0.66 mg/dL) than those who had non-surgical disease.CONCLUSION: MRI can reliably differentiate surgical conditions and several blood tests(WBC, proportion of neutrophils in the WBC, NLR, CRP, bilirubin) can help anticipate acute surgical condition among pregnant patients suspected to have acute appendicitis. | Ji Yong Jung Ji Ung Na Sang Kuk Han Pil Cho Choi Jang Hee LEE Dong Hyuk Shin | 2018 | World Journal of Emergency Medicine2018，9，1： | 4 |
| 5 | Efficacy, safety, and predictors of response to infliximab therapy for ulcerative colitis: A K orean multicenter retrospective study显示文摘 | Kang‐Moon Lee Yoon Tae Jeen Ju Yeon Cho Chang Kyun Lee Ja‐Seol Koo Dong Il Park Jong Pil Im Soo Jung Park You Sun Kim Tae Oh Kim Suck‐Ho Lee Byung Ik Jang Ji Won Kim Young Sook Park Eun‐Soo Kim Chang Hwan Choi Hyo Jong Kim | 2013 | J Gastroenterol Hepatol2013，，12： | 1 |
| 6 | Efficacy, safety, and predictors of response to infliximab therapy for ulcerative colitis: A K orean multicenter retrospective study显示文摘 | Kang‐Moon Lee Yoon Tae Jeen Ju Yeon Cho Chang Kyun Lee Ja‐Seol Koo Dong Il Park Jong Pil Im Soo Jung Park You Sun Kim Tae Oh Kim Suck‐Ho Lee Byung Ik Jang Ji Won Kim Young Sook Park Eun‐Soo Kim Chang Hwan Choi Hyo Jong Kim | 2013 | J Gastroenterol Hepatol2013，，12： | 1 |
| 7 | Relationship of Vitamin D Binding Protein Polymorphisms and Lung Function in Korean Chronic Obstructive Pulmonary Disease显示文摘 | Ji Ye Jung Dong Pil Choi Sungho Won | 2014 | Yonsei Med J2014，55，5： | 1 |
| 8 | Long-term oncologic outcomes of endoscopic stenting as a bridge to surgery for malignant colonic obstruction: comparison with emergency surgery显示文摘 | Ji Min Choi Changhyun Lee Yoo Min Han Minjong Lee Young Hoon Choi Dong Kee Jang Jong Pil Im Sang Gyun Kim Joo Sung Kim Hyun Chae Jung | 2014 | Surgical Endoscopy2014，，9： | 1 |
| 9 | Efficacy, safety, and predictors of response to infliximab therapy for ulcerative colitis: A K orean multicenter retrospective study显示文摘 | Kang‐Moon Lee Yoon Tae Jeen Ju Yeon Cho Chang Kyun Lee Ja‐Seol Koo Dong Il Park Jong Pil Im Soo Jung Park You Sun Kim Tae Oh Kim Suck‐Ho Lee Byung Ik Jang Ji Won Kim Young Sook Park Eun‐Soo Kim Chang Hwan Choi Hyo Jong Kim | 2013 | J Gastroenterol Hepatol2013，，12： | 1 |
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