Publications by authors named "Sungwoo Han"

This study develops a predictive model for video laryngoscopic views using advanced machine learning techniques, aiming to enhance airway management's efficiency and safety. A total of 212 participants were involved, with 169 in the training set and 43 in the test set. We assessed outcomes using the percentage of glottic opening (POGO) score and considered factors like the modified Mallampati classification, thyromental height and distance, sternomental distance, mouth opening distance, and neck circumference.

View Article and Find Full Text PDF

Post-craniotomy headache (PCH) is a common postoperative complication, and some of these patients progress to chronic PCH (CPCH). We aimed to identify clinical variables associated with PCH and its progression to CPCH, especially possible associations between age and sex differences. Therefore, we examined clinical information on PCH using the Clinical Data Warehouse over 10 years.

View Article and Find Full Text PDF

Background: To resolve nasal obstruction in rhinoplasty, inferior turbinate outfracture is performed widely alone or combined with other procedures. There are conflicting reports on the effect of inferior turbinate outfracture. This study evaluated the persistence of morphologic changes after inferior turbinate outfracture.

View Article and Find Full Text PDF

Background: A study was performed on the accidental chlorine gas leakage that occurred in a factory of printed circuit boards manufactured without chlorine. Health examination was performed for all 52 workers suspected of exposure to chlorine gas, and their evacuation-related behaviors were observed in addition to analyzing the factors that affected the duration of their acute respiratory symptoms.

Methods: Behavioral characteristics during the incidence of the accidental chlorine gas leakage, the estimated time of exposure, and the duration of subjective acute respiratory symptoms were investigated.

View Article and Find Full Text PDF

Background: There are few reports about work-related factors associated with Sjögren's syndrome. We report a case of overlap syndrome with Sjögren's syndrome and systemic sclerosis.

Case Presentation: A 54-year-old man was admitted due to dyspnea on exertion.

View Article and Find Full Text PDF

Objective: We evaluated postoperative changes in nasal cavity volume and their effects on nasal function and symptoms after endoscopic endonasal transsphenoidal approach for antero-central skull base surgery.

Study Design: Retrospective chart review at a tertiary referral center.

Methods: We studied 92 patients who underwent binostril, four-hand, endoscopic endonasal transsphenoidal approach surgery using the bilateral modified nasoseptal rescue flap technique.

View Article and Find Full Text PDF

Objective: We evaluated postoperative changes in nasal cavity dimensions and their effects on nasal functions and symptoms.

Study Design: Case series with chart review.

Setting: Tertiary referral center.

View Article and Find Full Text PDF

Objectives: The aim of this study was to examine the association between shift work and hyperuricemia among steel company workers.

Methods: We examined 1,029 male workers at a Korean steel company between June 6 and June 28, 2013. We conducted anthropometric measurements, questionnaire surveys, and blood tests.

View Article and Find Full Text PDF

Background: The glomerular filtration rate (GFR) decreases with age, while parathyroid hormone (PTH) increases. There are a few reports only on the relationship between GFR and PTH under the category of serum 25-hydroxyvitamin D (25[OH]D) concentration.

Methods: Using the Korea National Health and Nutrition Examination Survey (KNHANES) data, a cross-sectional study was conducted on the association between serum 25(OH)D concentration, GFR and PTH in Korean adults aged 50 years or older.

View Article and Find Full Text PDF

Background: Abnormal serum gamma-glutamyltransferase (γ-GT) may be an early and sensitive marker for oxidative stress. This study was performed to evaluate the association between serum heavy metals and γ-GT concentration.

Methods: This study is a cross-sectional analysis based on data from Korean National Health and Nutrition Examination Survey (V-1, 2, 2010, 2011) regarding serum heavy metal concentrations (lead, mercury, and cadmium) as well as serum γ-GT.

View Article and Find Full Text PDF

Objectives: Uric acid concentration is known to increase the prevalence of metabolic syndrome by affecting its components, resulting in increased risk of cerebrovascular and cardiovascular diseases, and long-term lead exposure is known to affect this serum uric acid level. In this study, we aimed to examine the association between the causes of hyperuricemia and metabolic syndrome, and to determine whether an increased blood lead level affects hyperuricemia.

Method: Anthropometric measurements, surveys, and blood tests were conducted between May and June 2012 in 759 men working in the steelmaking process at a domestic steel company.

View Article and Find Full Text PDF

Objectives: We sought to test whether the mechanical dyssynchrony assessed by tissue Doppler imaging (TDI) is a predictor of cardiac events in patients with congestive heart failure (CHF) and QRS duration < or =120 ms.

Background: The prevalence and prognostic value of mechanical dyssynchrony in patients with CHF and normal QRS duration have not been well clarified.

Methods: A total of 106 patients (age 63 +/- 11 years) with CHF and ejection fraction (EF) <35% were followed serially; TDI was performed using four basal and four mid-left ventricular segments to assess the time to peak systolic point from R-wave on electrocardiogram (Ts).

View Article and Find Full Text PDF

Background: Statins are believed to reduce coronary heart disease by mechanisms in addition to their well-known cholesterol lowering effect.

Hypothesis: We studied the effect of statins on expression of C-reactive protein (CRP), interleukin-6 (IL-6), adhesion molecules, and antioxidized low-density lipoprotein antibody (anti-oxLDL Ab) in patients with unstable angina (Braunwald class IIb or IIIb) undergoing coronary stenting.

Methods: Consecutive 50 patients with unstable angina were included in the study.

View Article and Find Full Text PDF

Background: The recovery of left ventricular ejection fraction (LVEF) appears to be prognostic of survival in congestive heart failure (CHF). The aim of our study was to evaluate which parameters appear to predict LVEF improvement in CHF.

Methods: In all, 85 patients (age 64 +/- 12 years) with CHF and LVEF <35% were enrolled.

View Article and Find Full Text PDF