Woo Sub Shim

Chungbuk National University, Chinsen, North Chungcheong, South Korea

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Publications (33)34.1 Total impact

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    ABSTRACT: Objectives/HypothesisTo evaluate the effect of oral prednisolone on recovery from tonsillectomy.Study DesignProspective, randomized, controlled trial of 198 consecutive patients, aged 4 years and older, with no previous or known contraindications to steroid therapy.Methods All 198 patients scheduled for elective tonsillectomy with or without adenoidectomy from April 2013 to April 2014 were included. The participants were then randomly assigned to receive a postoperative course of prednisolone 0.25 mg/kg/d or no prednisolone over 7 days. During the first postoperative day, pain, type of diet (none, fluid, soft, normal), type of activity (none, bed rest, quiet, restricted, normal), presence of nausea and vomiting, postoperative bleeding rate, and sleep disturbance were assessed using questionnaires. All patients were followed up on days 7 and 14 by endoscopic photographic examination of both tonsillar fossa and by completion of questionnaires.ResultsNo statistically significant differences in pain, diet, activity, rate of minor bleeding, nausea/vomiting, fever, or sleep disturbance were observed between the groups on day 1. On day 7, however, in pediatric patients, differences in pain (P = .001), diet (P = .001), activity (P = .004), mean area of re-epithelialization (P = .000), fever (P = .04), and sleep disturbance (P = .04) were observed. On day 14, differences in the mean area of re-epithelialization (P = .000, .001) remained in both pediatric and adult patients.Conclusions Oral prednisolone may be beneficial during recovery from tonsillectomy without causing any serious complications.Level of Evidence1b. Laryngoscope, 2014
    The Laryngoscope 10/2014; · 1.98 Impact Factor
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    ABSTRACT: Allergic rhinitis (AR) is often accompanied by multiple ocular symptoms. This study aimed to evaluate the prevalence of ocular symptoms and the impact of ocular symptoms on the quality of life in patients with AR. One thousand one hundred seventy-four patients with AR were enrolled from 24 centers in Korea. They were classified into four groups according to the Allergic Rhinitis and Its Impact on Asthma (ARIA) guideline and also classified into perennial AR (PAR) and seasonal AR groups. All patients were asked to complete the questionnaire regarding the presence of ocular symptoms, such as eye itching, watery eyes, and red eyes. The correlation between ocular symptoms and the rest of the quality-of-life areas in the Mini-Rhinoconjunctivitis Quality of Life Questionnaire (Mini-RQLQ) was also asked. Seven hundred nineteen (61.2%) of 1174 patients had ocular symptoms. In detail, the numbers of patients with eye itching, watery eyes, red eyes, and other ocular symptoms were 605 (51.5%), 313 (26.7%), 207 (17.6%), and 66 (5.6%), respectively. Female patients (72.5%) complained of ocular symptoms more commonly than male patients (55.1%). The patients with moderate-severe persistent AR showed the highest prevalence of ocular symptoms. The correlation coefficients between ocular symptoms and the rest of the quality-of-life areas in the Mini-RQLQ were statistically significant (p < 0.05). Sixty-one percent of Korean AR patients experienced ocular symptoms. The patients who were women and had PAR and more severe AR showed higher prevalence of ocular symptoms. The ocular symptoms might have a significant impact on the quality of life in patients with AR.
    American Journal of Rhinology and Allergy 09/2013; 27(5):135-139.
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    ABSTRACT: During nasotracheal intubation it is important to have proper pretreatment for nasal mucosa constriction and nasal cavity expanding. Nasal packing of epinephrine gauze is widely used as well as xylometazoline. The aim of this study was to compare and evaluate the efficacy of prophylactic intranasal spray of xylometazoline against epinephrine gauze packing in expanding the nasal cavity. Volunteers (n = 32) in their twenties without nasal disease such as septal deviation or rhinitis were enrolled in the study. The more patent nostril in each subject was measured by acoustic rhinometry as the base value. After intranasal spray of xylometazoline, the same nostril was remeasured by same method. Twenty four hours later, intranasal packing of epinephrine gauze was done and the same treatment was done. Subject preferences about the procedures were asked. THERE WERE SIGNIFICANT DIFFERENCE AMONG TREATMENTS (BASE VALUE: 0.582 ± 0.164 cm(2), xylometazoline spray: 0.793 ± 0.165 cm(2), epinephrine gauze packing: 0.990 ± 0.290 cm(2)) in acoustic rhinometry. While the epinephrine gauze packing showed more efficient mucosa constriction, subjects preferred xylometazoline spray. Even though xylometazoline spray was less effective than epinephrine gauze packing, the simplicity and convenience compensated. In patients undergoing nasotracheal intubation, xylometazoline spray can be an alternative to epinephrine gauze packing.
    Korean journal of anesthesiology 08/2013; 65(2):132-5.
  • Dong Wook Kim, Mi-Young Choi, Woo Sub Shim
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    ABSTRACT: To evaluate the surgical outcomes of endoscopic dacryocystorhinostomy with canalicular marsupialization (EDCR CM) in common canalicular obstruction. Retrospective review of medical records. Thirty-six patients (38 eyes) who had undergone EDCR CM for chronic epiphora caused by common canalicular obstruction. Surgical outcomes were evaluated postoperatively by improvement of subjective symptoms and patency of the neo-ostium of DCR on nasal endoscopy. Subjective symptoms improved in 81.6% (31/38) after primary EDCR CM and 94.7% (36/38) after revision surgery. In cases of silicone stent intubation, the surgical results were relatively superior compared with patients without silicon stent insertion (83.3% and 75.0%, respectively; p = 0.624). On postoperative nasal examination after primary surgery, the patency of dacryocystorhinostomy site was lower in patients with silicone stent insertion than those without (86.70% and 100%, respectively; p = 0.560), and the patency rate of the canalicular neo-ostium was higher in patients with silicone stent insertion than those without (90.0% and 75.0%, respectively; p = 0.279). There were no serious intraoperative complications except mild punctual erosion (4 patients, 10.5%). EDCR CM showed favourable surgical outcomes and few surgical complications. This surgical treatment could be the first-line treatment for patients with distal common canalicular obstruction.
    Canadian Journal of Ophthalmology 08/2013; 48(4):335-9. · 1.15 Impact Factor
  • Je Yeob Yeon, Woo Sub Shim
    Acta oto-laryngologica 01/2013; · 0.98 Impact Factor
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    ABSTRACT: Routine use of intraoperative transesophageal echocardiography (TEE) is a safe monitoring and diagnostic method during pediatric congenital cardiac surgery. However, the question of whether intraoperative TEE is accurate and cost effective for patients with tetralogy of Fallot (TOF) has not been raised. This study aimed to analyze the cost-benefit of routine TEE during the repair of TOF. The medical records, including TEE results, for patients who underwent correction of TOF between January 1997 and June 2007 were reviewed and retrospectively analyzed. Intraoperative TEE was performed for 340 patients (85 %). Residual problems were detected in 17.9 % (61/340), and a return to bypass was needed for 10 % (34/340) of the patients. The degree of agreement between the intraoperative TEE and early postoperative transthoracic echocardiography (TTE) was relatively high. Surgeons with less surgical experience more frequently used intraoperative TEE (p = 0.007) and performed repeat bypass surgery at a higher rate (p = 0.00). Even relatively unskilled surgeons might be able to achieve surgical outcomes similar to those of experienced surgeons using intraoperative TEE. By avoiding late surgical revision, the possible cost savings were estimated to be 1,726,000 Korean won (US$1,489) per TEE examination. Intraoperative TEE can be used as a tool for surgeons in making decisions in the operating room. In addition, intraoperative TEE decreased the frequency of reoperations and postoperative interventions. The results of this study demonstrate that routine intraoperative TEE during repair of TOF was both clinically beneficial and cost effective.
    Pediatric Cardiology 07/2012; · 1.20 Impact Factor
  • Je Yeob Yeon, Woo Sub Shim
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    ABSTRACT: In nasolacrimal duct (NLD) obstruction patients that undergo endoscopic dacryocystorhinostomy (DCR), creation of a patent rhinostomy with adequate epithelialization can be accomplished without a stent. However, in common canalicular obstruction patients, a silicone stent seems to have a beneficial role and to bear more favorable results. The aim of this study was to evaluate the surgical outcome of endoscopic DCR without the use of a silicone stent. In all, 36 patients (41 eyes) who underwent endoscopic DCR were enrolled in this study. The patients were classified into a DCR with silicone stent group and a DCR without silicone stent group. Then each of the groups was subdivided into common canalicular obstruction group and NLD obstruction group. Surgical outcomes were evaluated by postoperative symptom improvement and patency of the rhinostomy under nasal endoscopic exam. The epiphora was improved in 84.2% of the silicone stent group and 81.8% of the non-silicone stent group. Categorized by the level of obstruction, in common canalicular obstruction, the success rate was 84.5% (11/13) in the silicone stent group and 57.1% (4/7) in the no stent group. In NLD obstruction, the success rate was 83.0% (5/6) in the silicone stent group and 93.3% (14/15) in the no stent group.
    Acta oto-laryngologica 03/2012; 132 Suppl 1:S77-81. · 0.98 Impact Factor
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    ABSTRACT: The study group for sinonasal tumors at the Korean Rhinologic Society analyzed the results of the Korean multicenter experience for sinonasal inverted papilloma (IP) surgeries. Multicenter cohort study and retrospective analysis. In total, 939 patients diagnosed with sinonasal IP treated between 1998 and 2007 at 17 university hospitals were enrolled. Demographic data and information about previous surgeries, the origin and involved site of the tumor, the surgical approach, follow-up duration, recurrence, and the presence of malignancy were collected. There were 361 patients whose follow-up was <12 months who were excluded, and 578 patients were included for recurrence analysis. The mean follow-up duration for recurrence analysis was 41.0 months, and 15.7% (91/578) had recurrences, with a mean time to recurrence of 32.6 months. However, the group whose follow-up was longer than 3 years had a higher chance of tumor recurrence. Patients whose IPs involved the frontal sinus or the medial wall of the maxillary sinus had higher recurrence rates. There was no significant difference in recurrence rates according to stage or surgical approach. In the T3 stage of Krouse, the T3-A stage of Furuta, and group B of the Citardi staging system, the endoscopic approach alone resulted in higher recurrence rates. Generally, there were no significant differences in recurrence rates according to clinical stage or surgical approach. Given the rate of delayed recurrence, follow-up of >3 years is required. Moreover, surgeons should always consider combined approaches to reduce the chances of recurrence.
    The Laryngoscope 03/2012; 122(3):487-94. · 1.98 Impact Factor
  • Renzo Shamey, Woo Sub Shim
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    ABSTRACT: In a previous publication we reviewed some of the most critical issues that affect the coloration and properties of cotton-based textiles [R. Shamey and T. Hussain, Textile Progress 37(1/2) (2005) pp. 1–84]. Today, polyester is still widely regarded as an inexpensive and uncomfortable fiber, but this image is slowly beginning to fade with the emergence of polyester luxury fibers. Polyester fibers currently comprise a commanding 77% share of the total worldwide production of the major synthetic fibers [F. Ayfi, 2003–2004 Handbook of Statistics on Man-Made/Synthetic Fibre/Yarn Industry. Part One, Fibre for Better Living, Association of Synthetic Fibre Industry, Mumbai, India, 2004, p. 177]. More than 95% of all polyester fibers manufactured today is based on polyethylene terephthalate. The dyeing properties of polyester fibers are strongly influenced by many of the processing conditions to which each fiber may be subjected during its manufacturing or in subsequent handling. Significant differences in properties of fibers can therefore arise due to their different processing history. Often, the root cause(s) of a problem in the dyed synthetic material can be traced as far back as the manufacturing process. In order to resolve many of the outstanding issues that commonly occur in the dyeing of this important fiber, a comprehensive review of the issues dealing with the manufacturing history as well as fiber processing conditions, including preparation, dyeing, and finishing is warranted. Although some of the underlying problems are related to common causes such as water quality and imperfections in machinery employed, others are specific to the treatment conditions of the fiber. Such conditions include preparation of ingredients, polymerization, fiber and filament processing conditions, as well as heat setting that can cause problems in the coloration of fiber. This summary analysis complements the rich pool of knowledge in this domain and addresses problems in the dyeing of polyester textile materials in various forms. An overview of various textile operations for polyester is given in the beginning. Then, various key steps and critical factors involved in the production of dyed polyester textile materials are described in detail and problems originating at each stage are summarized.
    Textile Progress 06/2011; 43(2):97-153.
  • The Open Textile Journal 01/2010; 2(1):53-58.
  • Shu Zhang, Woo Sub Shim, Jooyoun Kim
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    ABSTRACT: Electrospinning and its application in filtration area are worthwhile to look into as the large surface-to-volume ratio of nanoweb may affect the filtration efficiency by possibly giving more particle-capture sites. In this study, Nylon 6 is electrospun to produce ultra-fine nonwovens, and its characteristics as filter media are investigated. Electrospinning parameters including solution concentration, tip-to-collector distance, and the feed rate are changed in producing nonwovens in different fibre size distribution ranging from 50 to 150 nm in diameters. The solution concentration of 10 and 12 wt% produced the fibres with the average diameter of around 85 nm, where 15 wt% solution produced larger fibres with the average diameter of 121 nm. Finer fibres were able to process at longer tip-to-collector distance and at slower feed rate. The electrospun media that are processed at different spinning conditions are evaluated for its filtration efficiency and pressure drop. The electrospun nanofibre media shows the potential in application as HEPA and ULPA grade filter media, by comparing the filtering performance of nanoweb with the conventional melt-blown nonwoven media.
    Materials and Design 10/2009; · 2.91 Impact Factor
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    ABSTRACT: Many factors influence the outcome of endoscopic dacryocystorhinostomy (DCR). One of the most important prognostic factors is the level of obstruction in the lacrimal drainage system. The main objective of this report is to evaluate both the frequency of obstruction by anatomical region of the lacrimal drainage system on dacryocystography (DCG) and the surgical outcome of endoscopic DCR according to the obstruction level. A retrospective series of 48 patients (60 eyes) who had undergone endoscopic DCR from January 2005 to November 2007 were enrolled. Preoperative evaluation consisted of a standard examination which included lacrimal irrigation, probing, DCG and osteomeatal unit (OMU) computed tomography. Patients were classified into four groups according to the obstruction level on DCG. Surgical outcome was evaluated postoperatively by subjective improvement of epiphora and patent rhinostomy opening on nasal endoscopic exam. Of 60 eyes, the levels of obstruction were the common canaliculus in 14 eyes (23.3%), the lacrimal sac in 13 eyes (21.7%), the duct-sac junction in 13 eyes (21.7%) and the nasolacrimal duct (NLD) in 20 eyes (33.3%). The ductsac junction obstruction was treated most successfully (100%), followed by NLD obstruction (90%), common canaliculus obstruction (78.6%) and saccal obstruction (69.2%). In patients with lacrimal drainage system obstruction, preoperative evaluation of obstruction level using DCG may be helpful for predicting the surgical outcome of endoscopic DCR. The saccal obstruction may have a worse prognosis than the other obstruction levels.
    Clinical and Experimental Otorhinolaryngology 09/2009; 2(3):141-4. · 0.88 Impact Factor
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    ABSTRACT: Streptococcus salivarius meningitis is very uncommon, and most cases are iatrogenic, occurring after in-vasive procedures such as spinal anesthesia or lum-bar puncture etc.. Post-traumatic occurrence of this infection is especially rare. A 20-year-old man with a previous history of skull base fracture was seen at the emergency department with signs of acute bacte-rial meningitis. The CSF had a few gram positive coc-ci with neutrophilic pleocytosis, which were identified as S. salivarius by the Vitek system (bioMerioux, Inc., Hazelwood, MO, USA), rapid ID 32 Strep (bioMerieux, Marcy-l'Etoile, France) and 16S rRNA sequencing. The microorganism showed intermediate resistance to penicillin (MIC=0.25μg/mL) but was susceptible to cefotaxime (MIC=0.25μg/mL) and vancomycin (MIC= 0.75μg/mL). The patient was treated with ceftriaxone and vancomycin. He also had his CSF leakage re-paired by an endoscopic approach. To our knowl-edge, this is the first case of S. salivarius meningitis reported in Korea.
    Korean J Clin Microbiol. 07/2009; 12.
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    The Open Biomaterials Journal. 01/2009; 1(1):10-20.
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    ABSTRACT: Recombinant activated coagulation factor VII (rFVIIa) is known to be effective in the management of acquired deficiencies of factor VII and platelet function defects. But recently, rFVIIa has been successfully used to treat ongoing bleeding in disseminated intravascular coagulopathy (DIC) condition. The patient reported here was suspected to be suffering from toxic hepatitis on admission. After percutaneous liver biopsy, bleeding occurred and did not stop even after right hepatic artery embolization. The patient developed a severe hemorrhage that resulted in hypovolemic shock, hemoperitoneum, and a massive subcapsular hematoma. The patient then developed DIC due to massive transfusion, as well as acute liver necrosis. The patient was given 400 mug/kg of rFVIIa. Recombinant factor VIIa was administered in an attempt to control the bleeding. This stabilized the hemoglobin levels of the patient. The patient gradually recovered in 4 months. In conclusion, this case suggests that rFVIIa can be successfully used for the hemostasis of uncontrolled bleeding in DIC.
    Case Reports in Gastroenterology 01/2009; 3(1):10-15.
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    ABSTRACT: Novel regenerated cellulose material which was prepared from cellulose acetate fiber through the hydrolysis of acetyl groups have been developed by an environmentally friendly process without emitting toxic substances in addition to be at low production cost. They have composite crystalline structure constituted of cellulose II and cellulose IV. Also, they show a lamellar morphology with an increased amorphous region, as compared to conventional regenerated cellulose such as viscose rayon and cupra rayon. Our data obtained by several independent methods demonstrated that the adsorption properties of cellulose fibers depend predominantly on the amorphous region.
    Fibers and Polymers 11/2008; 9(6):691-697. · 1.11 Impact Factor
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    ABSTRACT: Parathyroid adenoma usually manifests with symptoms related to hypercalcemia, such as urinary stone and bone fracture. It may also present with asymptomatic hypercalcemia. However, spontaneous cervical hematoma may occur very rarely as a result of extracapsular hemorrhage of a cervical parathyroid adenoma causing acute painful cervical swelling, bruising, dyspnea, hoarseness and dysphagia. We report a 44-year-old woman who manifested as a spontaneous cervical hematoma without any clinical evidence of hyperparathyroidism.
    Clinical and Experimental Otorhinolaryngology 04/2008; 1(1):46-8. · 0.88 Impact Factor
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    ABSTRACT: Three commercial dyes-direct, reactive, and vat dye-were applied to the new regenerated cellulose fiber which was prepared from cellulose acetate fiber through the hydrolysis of acetyl groups with an environmentally friendly manufacturing process. The effect of salt, alkali, liquor ratio, temperature, and leveling agent on the dyeing behavior and fastness were evaluated and compared with regular viscose rayon. From the results, we found that new regenerated cellulose fiber exhibited better dyeability and fastness than regular viscose rayon.
    Fibers and Polymers 03/2008; 9(2):152-159. · 1.11 Impact Factor
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    ABSTRACT: Although many studies regarding airway remodeling in asthma have been reported, only a few studies have investigated airway remodeling in allergic rhinitis. To determine whether repetitive allergen challenge could induce airway remodeling in the nose and evaluate the effect of steroids using a murine model of allergic rhinitis. To develop a mouse model of airway remodeling, ovalbumin-sensitized mice were repeatedly exposed to inhaled ovalbumin administration twice a week for 1 month and 3 months. Matched control mice were challenged with phosphate-buffered saline, and the treatment group received intraperitoneal dexamethasone injection. Trichrome, periodic acid-Schiff, hematoxylin-eosin, and immunohistochemical staining against matrix metalloproteinase 9 and tissue inhibitors of metalloproteinase 1 were performed to nasal and lung tissues, and the level of transforming growth factor beta in the nasal lavage fluid was analyzed. Repetitive ovalbumin challenge for 3 months induced circumferential peribronchial fibrosis in the lung. In the nose, subepithelial fibrosis, increased matrix metalloproteinase 9 and tissue inhibitors of metalloproteinase 1 expression, goblet cell hyperplasia, and submucous gland hypertrophy were observed compared with the control group. Features of airway remodeling were more prominent in the lung tissue. Administration of dexamethasone significantly inhibited these histologic changes. Airway remodeling associated with long-term allergen challenge can occur in the nasal mucosa and the lung. Steroid treatment prevents airway inflammation in response to acute allergen challenge, as well as airway remodeling by long-term allergen challenge.
    Annals of allergy, asthma & immunology: official publication of the American College of Allergy, Asthma, & Immunology 02/2007; 98(1):22-31. · 3.45 Impact Factor
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    ABSTRACT: In this study, we aimed to investigate the release and response of interleukin (IL)-18 to steroid treatment in a mouse model of allergic rhinitis. BALB/c mice were sensitized systemically by intraperitoneal injection of ovalbumin and locally by ovalbumin inhalation. Dexamethasone sodium phosphate was given by intraperitoneal injection in the steroid treatment group. Symptom scores, eosinophil counts, and IL-18 concentrations in the nasal and lung lavage fluids were analyzed. The symptom scores and eosinophil counts of the negative control and steroid treatment groups were significantly lower than those of the positive control group (p < .01). The mean IL-18 concentrations in the nasal lavage fluid were not significantly different among the three groups (56.68 +/- 9.57,63.39 +/- 8.93, and 64.47 +/- 6.83 pg/mL, respectively). The IL-18 concentrations in the lung lavage fluid were significantly different between the positive control group and the steroid treatment group (430.75 +/- 154.54 and 69.94 +/- 14.26 pg/mL, respectively, p = .028). The IL-18 concentration was found to be increased in the lung lavage fluid, but not in the nasal lavage fluid, in a mouse model of allergic rhinitis. Increased IL-18 concentrations returned toward the previous concentrations after steroid treatment. These results suggest that the roles of IL-18 may be different in the pathogenesis of allergic rhinitis and the pathogenesis of asthma.
    The Annals of otology, rhinology, and laryngology 01/2007; 116(1):76-80. · 1.21 Impact Factor

Publication Stats

126 Citations
34.10 Total Impact Points

Institutions

  • 2008–2014
    • Chungbuk National University
      • College of Medicine
      Chinsen, North Chungcheong, South Korea
    • Konkuk University
      Sŏul, Seoul, South Korea
  • 2012
    • Sejong General Hospital
      Bucheon, Gyeonggi Province, South Korea
  • 2011
    • North Carolina State University
      • Department of Textile Engineering, Chemistry and Science
      Raleigh, NC, United States
  • 2005–2006
    • Dankook University
      • Department of Polymer System Engineering
      Eidō, North Chungcheong, South Korea
    • Seoul National University
      • Department of Materials Science and Engineering
      Sŏul, Seoul, South Korea