Chan Woong Kim
Chung-Ang University
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Resuscitation | 2008
Je Hyeok Oh; Sang Jin Lee; Sung Eun Kim; Kwang Jung Lee; Ju Won Choe; Chan Woong Kim
THE AIM OF THE STUDY Despite the emphasis of cardiopulmonary resuscitation (CPR) quality, the performance of on-site CPR is reported to be frequently unsuccessful. In order to improve CPR quality, various feedback systems have been developed, but they have not yet been widely used on site due to low economic efficiency. The present study was attempted to determine whether CPR quality can be improved using audio tone guidance. THE METHODS A total of 80 seniors at our medical school and college of nursing participated in the study. After they were trained in CPR according to the 2005 guidelines, they performed CPR using a cardiac arrest model with an advanced airway. The participants were organized into 40 groups. After they took Test 1 without any feedback for 2 min, they were randomly assigned to the feedback and control groups and took Test 2 for 2 min. In the feedback group, a low-pitched sound was delivered every 0.6 s for the guidance of chest compression and a high-pitched sound was simultaneously delivered every 10 deliveries of a low-pitched sound for the guidance of ventilation at 6s intervals. THE RESULTS In the feedback group the mean compression rate significantly improved in accuracy from 111.5+/-13.7/min to 100.1+/-3.2/min (P<0.01), and ventilation counts significantly improved in accuracy from 7.4+/-1.8/min to 9.9+/-0.3/min (P<0.01). However, the mean compression depth significantly decreased from 39.3+/-9.5 mm to 35.8+/-8.2 mm (P<0.01). THE CONCLUSION Audio tone guidance ensures better chest compression rate and ventilation rate but this does not necessarily result in a better CPR quality.
Journal of Emergency Medicine | 2012
Tae Ung Park; Je Hyeok Oh; In Taek Chang; Sang Jin Lee; Sung Eun Kim; Chan Woong Kim; Ju Won Choe; Kwang Jung Lee
BACKGROUND Omental infarction is a rare disease entity that can cause acute or subacute abdominal pain. In the past, it was thought that omental infarction mainly occurred on the right side because it was detected when surgery was performed on patients who complained of abdominal pain on the right side. OBJECTIVE We present this case to demonstrate that omental infarction can occur at any site, including the epigastric area and the lower abdomen, and even on the left side where the greater omentum is located. CASE REPORT Four patients with omental infarction presented to the Emergency Department with various clinical symptoms. All of them were diagnosed by computed tomography scan. Omental infarction occurred on the right side in 2 patients, at the epigastric area in 1 patient, and on the left side in 1 patient. Three were improved with supportive care. Laparoscopy was performed in 1 patient because his abdominal pain persisted despite conservative treatment. CONCLUSION Omental infarction should be included in the differential diagnosis list of acute abdominal pain because it can occur at any site. In addition, because this disease runs a self-limited course, conservative care is recommended. Thus, unnecessary operations can be avoided in cases where omental infarction is diagnosed by imaging studies.
International Journal of Dermatology | 2012
In Su Kim; Kui Young Park; Beom Joon Kim; Myeung Nam Kim; Chan Woong Kim; Sung Eun Kim
Background Different types of laser have recently been reported as effective tools of treatment in striae distensae. Although fractional photothermolysis is effective for striae distensae, post‐inflammatory hyperpigmentation is a major concern and common complication. There are no reports of the effects of using an intradermal radiofrequency (RF) device in striae distensae. Autologous platelet‐rich plasma (PRP) is an effective treatment known for its wound‐healing effects.
Annals of Dermatology | 2011
Yang Won Lee; Hee Jin Byun; Beom Joon Kim; Dong Ha Kim; Yun Young Lim; Jin Woong Lee; Myeung Nam Kim; Donghak Kim; Young-Jin Chun; Seog Kyun Mun; Chan Woong Kim; Sung Eun Kim; Jae Sung Hwang
BACKGROUND Malassezia species play an important role in the pathogenesis of seborrheic dermatitis. In particular, M. restricta and M. globosa are considered to be the predominant organisms in seborrheic dermatitis of Western countries. However, species distribution of Malassezia in seborrheic dermatitis has not been clearly determined yet in Asia. OBJECTIVE To identify the distribution of Malassezia species on the scalp of seborrheic dermatitis patients in Korea using 26S rDNA PCR-RFLP analysis. METHODS A total of 40 seborrheic dermatitis patients and 100 normal healthy volunteers were included in this study. For the identification of Malassezia species, the scalp scales of the subjects were analyzed by 26S rDNA PCR-RFLP analysis. RESULTS The most commonly identified Malassezia species were M. restricta in the seborrheic dermatitis patients, and M. globosa in the normal controls. In the seborrheic dermatitis group, M. restricta was identified in 47.5%, M. globosa in 27.5%, M. furfur in 7.5%, and M. sympodialis in 2.5% of patients. In the healthy control group, M. globosa was identified in 32.0%, M. restricta in 25.0%, M. furfur in 8.0%, M. obtusa in 6.0%, M. slooffiae in 6.0%, and M. sympodialis in 4.0% of subjects. CONCLUSION M. restricta is considered to be the most important Malassezia species in Korean seborrheic dermatitis patients.
International Journal of Dermatology | 2009
Kwang Ho Yoo; Myeung Nam Kim; Beom Joon Kim; Chan Woong Kim
Many studies have documented an abnormal cell-mediated immune reaction in alopecia areata (AA) 1 . The key histopatho logic feature of AA is a lymphocytic infiltrate around the lower hair follicle, which may appear in a characteristic “swarm of bees” pattern. The affected hair follicles terminate their anagen phase prematurely and regress via the induction of massive apoptosis of the lower portion of the follicle (the catagen phase), which results in a resting hair follicle (the telogen phase). The hair follicles may then reenter the anagen phase, but in the presence of a lymphocytic infiltrate, the anagen is terminated prematurely, which results in miniaturized hair follicles. AA represents a disorder of hair follicle cycling in a dual sense: it almost exclusively attacks anagen hair follicles and then greatly disturbs hair follicle cycling by “catapulting” anagen follicles into the catagen phase 2 . The treatment of AA depends on the severity and extent of the disease. The medications include a topical irritant, and in mild cases, topical and intralesional steroids. More aggressive therapy is used for severe cases, however, such as systemic corticosteroids, immunosuppressive drugs, and immune modulators 3 . These treatments frequently show side effects and a relatively high relapse rate, though. Recently, laser treatment of different wavelengths has been used to manage this roblem 1,3-
Respiration | 2010
Hye-Min Lee; Jong Wook Shin; Jae Yeol Kim; In Won Park; Byoung Whui Choi; Jae Chol Choi; Jae Seung Seo; Chan Woong Kim
Background: Early diagnosis of active pulmonary tuberculosis (PTB) is critical for TB control, and difficult in patients with smear-negative sputum. Objective: We wanted to evaluate the usefulness of clinical findings, high-resolution computed tomography (HRCT), interferon-γ-releasing assay (IGRA) and polymerase chain reaction (PCR) of sputum in the diagnosis of smear-negative PTB. Methods: From June 2006 to September 2008, 178 patients with suspected PTB on the basis of clinical and radiological findings visited our institute. After excluding smear-positive cases (n = 77) and cases with an inconclusive diagnosis (n = 17), we studied 84 patients. Their clinical records, HRCT, sputum TB-PCR assay and IGRA results were retrospectively evaluated. A QuantiFeron-TB Gold (QFT-G; Cellestis Ltd., Carnegie, Vic., Australia) assay was used for the IGRA. Results: Active PTB was diagnosed in 40 (48%) of 84 patients; lack of sputum and young age were significantly associated with an increased risk of PTB. The sensitivities of sputum PCR assay, IGRA, and HRCT were 43.2, 84.4 and 80.0%, respectively, and the specificities were 97.7, 82.9 and 70.5%, respectively. Among the 38 patients suspected of having PTB based on HRCT, 24 patients showed positive results on the IGRA, and 23 of these were diagnosed with active PTB. Among the 35 patients suggested not to have TB based on HRCT, 25 showed negative results on the IGRA, and 23 (92%) of these were diagnosed as not to have TB. Conclusion: The combined results of HRCT and the IGRA could help decision-making for early initiation of treatment in smear-negative patients.
Journal of Dermatology | 2008
Chong Won Choi; Sung Eun Chang; Hana Bak; Jee Ho Choi; Hyun Sun Park; Chang Hun Huh; Chan Woong Kim; Sung Eun Kim; Seog Kyun Mun; Beom Joon Kim; Myeung Nam Kim
Vitiligo is a common, acquired, depigmenting disease of the skin. Although the pathogenesis of vitiligo is still unclear, it is postulated that topical immunomodulators exert therapeutic effects on treatment of vitiligo. We reviewed the treatment of vitiligo with topical immunomodulators and topical steroids to evaluate the efficacy of immunomodulators in treatment of vitiligo. We reviewed 52 patients treated with topical immunomodulators and 27 patients with topical steroids. To evaluate the efficacy, repigmentation of vitiligo was reviewed. Between the two treatments, the duration from the start of treatment to onset of repigmentation was significantly shorter in the topical immunomodulator group (P = 0.002). However, no statistically significant differences were found in sex, age, mean disease duration, sites of vitiligo lesion and ratio of patients who showed response. We may suggest topical immunomodulator as an alternative to topical steroids for treatment of vitiligo.
Annals of Dermatology | 2013
Kui Young Park; Woo Sun Jang; Yun Young Lim; Joo Hee Ahn; Sang Jin Lee; Chan Woong Kim; Sung Eun Kim; Beom Joon Kim; Myeung Nam Kim
Background Microneedles provide a minimally invasive means to transport molecules into the skin. A number of specific strategies have been employed to use microneedles for transdermal delivery. Objective The purpose of this study was to investigate the safety of two new digital microneedle devices (Digital Hand® and Digital Pro®; Bomtech Electronics Co., Ltd., Seoul, Korea) for the perforation of skin in skin-hairless-1 mice. This device replaces conventional needles and is designed specifically for intradermal delivery. Methods We used two newly developed digital microneedle devices to perforate the skin of skin-hairless-1 mice. We conducted a comparative study of the two digital microneedle devices and DTS® (Disk type-microneedle Therapy System; DTS lab., Seoul, Korea). To evaluate skin stability, we performed visual and dermatoscopic inspections, measurements of transepidermal water loss, and biopsies. Results The two novel digital microneedle devices did not induce significant abnormalities of the skin on visual or dermatoscopic inspection, regardless of needle size (0.25~2.0 mm). No significant histopathological changes, such as inflammatory cell infiltration, desquamation of the stratum corneum, or disruption of the basal layer, were observed. The digital microneedle devices and microneedle therapy system produced similar results on measures of skin stability. Conclusion These two novel digital microneedle devices are safe transdermal drug delivery systems.
Emergency Medicine Australasia | 2012
Dong Hoon Lee; Chan Woong Kim; Sung Eun Kim; Sang Jin Lee
Objectives: Resuscitation on a medical bed is difficult because of the need to match the height of the bed to the height of the rescuer, which is impossible on a fixed‐height medical bed. This study investigated the effect of using a step stool on chest compressions performed on a manikin in a fixed‐height medical bed.
Emergency Medicine Journal | 2010
Sang Jin Lee; Chan Woong Kim; Kwang Jung Lee; Ju Won Choe; Sung Eun Kim; Je Hyeok Oh; Yong Soon Park
Background S100B is a biomarker that reflects injury to the central nervous system. As the spine is an integral part of the spinal cord, a study was undertaken to investigate whether serum S100B levels are associated with acute spinal fracture without head injury. Methods The study population consisted of 32 consecutive patients aged ≥18 years in whom the emergency physicians suspected spinal fractures. All the patients underwent CT scans to establish the diagnosis of spinal fracture. MRI was then performed on all the patients to determine the presence of spinal cord injury. Results Serum S100B levels were higher in the spinal fracture group than in the non-spinal fracture group, and 19 of the 20 patients in the spinal fracture group (95%) had an S100B level >0.12 μg/l, whereas all 12 of the non-spinal fracture group had an S100B level ≤0.12 μg/l. The S100B level in patients with epidural encroachment of the spinal cord was significantly higher (0.22–4.58 μg/l; mean 2.45 μg/l; 95% CI 0.95 to 3.94) than in those without epidural encroachment (0.114–2.87 μg/l; mean 0.80 μg/l; 95% CI 0.24 to 1.37) (p=0.037). Plain radiography revealed no definite abnormal findings in half of the patients with spinal fracture. Conclusions Serum S100B levels are raised in all patients with acute spinal fracture without head injury. Spinal fracture may therefore be one of the extracerebral sources of S100B. Serum S100B levels may be an effective tool for excluding subtle spinal fractures with no clear radiographic findings.