Publications by authors named "Chan Ik Park"

Background: Since the Trauma and Injury Severity Score (TRISS) was first developed in 1987, it has been widely used to predict trauma outcomes. However, numerous attempts have been made to adjust coefficients or develop new prediction models, as TRISS may not align with the local conditions. This study aimed to develop a Korean-TRISS (K-TRISS) model suitable for the Korean population.

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Although venovenous (VV) extracorporeal membrane oxygenation (ECMO) is a life-saving intervention for trauma patients with severe respiratory failure, its mortality rate is 27%, and optimal metabolic markers for its initiation remain uncertain. We investigate the prognostic value of pre-cannulation lactate in trauma patients receiving early VV ECMO. This retrospective cohort study (2015-2024) included trauma patients undergoing VV ECMO.

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  • This study analyzes the clinical characteristics and treatment results of patients with traumatic sternal fractures over a 10-year period at a regional trauma center, highlighting the lack of previous reports on this topic.* -
  • Out of 266 patients with sternal fractures, 98 underwent surgical treatment due to severe complications, while 162 were managed conservatively, with both groups showing similar lengths of hospital stays.* -
  • The study concludes that surgical interventions for sternal fractures resulted in successful outcomes with minimal complications, emphasizing the importance of factors like flail motion and rib fracture in deciding the treatment approach.*
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Background: Transcatheter arterial embolization (TAE) is an established approach for controlling hemorrhage in adults with acute abdominal and pelvic trauma. However, its application in pediatric trauma is not well established. This study aimed to evaluate the safety and effectiveness of TAE in a population of pediatric patients with blunt trauma.

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  • Surgical stabilization of rib fractures (SSRF) is effective for flail chest patients, but hardware failure (HF) of implanted plates may occur, prompting this study to explore its clinical characteristics and factors involved.
  • Among 728 patients who underwent SSRF, 10.9% experienced HF, primarily screw loosening, with a mean age of 56.5 years; the majority of these patients were men.
  • Reoperations for plate removal happened in 26.3% of HF cases, primarily in younger patients, indicating a need for more research to identify risk factors associated with SSRF failure.
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  • - Pulmonary contusion is linked to respiratory complications in trauma patients, prompting a study to explore how the ratio of contusion volume to total lung volume affects patient outcomes.
  • - Out of 73 analyzed patients, 38 were identified at severe risk due to high contusion ratios, with many developing pneumonia or acute respiratory distress syndrome.
  • - The study found that measuring the contusion ratio using chest CT can reliably predict the risk for complications, with a threshold of about 70.4% indicating a higher likelihood of pneumonia.
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Background: Splenic artery embolization (SAE) is commonly employed as a non-operative management technique for splenic injury. Nonetheless, information on follow-up duration and methods, and the natural course of splenic infarction after SAE is limited. Thus, this study is aimed to analyze the patterns of complications and recovery of splenic infarction after SAE and to determine the appropriate follow-up duration and method.

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Gastric artery bleeding after blunt trauma is rare. In such cases, if vital signs are stable, angiographic embolization may be performed. Although gastric artery embolization is known to be safe due to its anatomical properties, complications may occur.

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Although South Korea is a high-income country, its trauma system is comparable to low- and middle-income countries with high preventable trauma death rates of more than 30%. Since 2012, South Korea has established a national trauma system based on the implementation of regional trauma centers and improvement of the transfer system; this study aimed to evaluate its effectiveness. We compared the national preventable trauma death rates, transfer patterns, and outcomes between 2015 and 2017.

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  • Transarterial embolisation (TAE) is a procedure used to control bleeding from pelvic fractures, but its impact on patient survival and outcomes was unclear before this study.
  • The researchers analyzed data from trauma patients treated between November 2015 and December 2019 and created a propensity score to compare survival rates at 28 days between those who received TAE and those who did not.
  • Results showed that TAE significantly improved 28-day survival rates, with 93.9% of patients treated with TAE surviving compared to 86.2% of those without it, indicating that TAE should be considered for severely injured patients with pelvic fractures.
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Acute mediastinitis after gastric rupture due to blunt trauma is very rare. In such cases, the esophageal hiatus widens due to elevated intra-abdominal pressure, and spillage of gastric contents causes acute posterior mediastinitis. The present report describes the case of a 30-year-old man who injured his left flank, which resulted in gastric rupture.

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  • In acute ischemic stroke, blood pressure initially rises but typically returns to baseline within 24-48 hours, with variability in outcomes based on when BP is measured post-stroke.
  • A study of 446 patients showed that those with favorable outcomes (mRS score 0-2 at discharge) had lower systolic blood pressure at 12 and 24 hours after admission, along with better initial neurological assessments.
  • Key predictors of favorable outcomes included lower initial NIH Stroke Scale scores, fewer neurological deficits, and lower SBP at 24 hours, regardless of whether patients received tPA treatment.
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Blunt abdominal aortic injury (BAAI) is extremely rare. Three known treatments of BAAI exist: medical treatment, conventional surgical treatment, and endovascular treatment. Outcomes of medical and conventional surgical treatments, such as bypass graft, thrombectomy, and intimal suture, were not satisfactory.

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Hereditary hearing loss (HHL) is a common genetically heterogeneous disorder, which follows Mendelian inheritance in humans. Because of this heterogeneity, the identification of the causative gene of HHL by linkage analysis or Sanger sequencing have shown economic and temporal limitations. With recent advances in next-generation sequencing (NGS) techniques, rapid identification of a causative gene via massively parallel sequencing is now possible.

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Hair cells in the cochlea display highly regulated actin polymerization, which is mediated by the human diaphanous-related formin 1 gene (DIAPH1; also called DFNA1, DIA1). DFNA1, the first type of autosomal dominant nonsyndromic hearing loss (ADNSHL), is known to be associated with mutations in DIAPH1. However, no genetic study of DFNA1 in Koreans with hearing loss has yet been reported.

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Objective: When managing patients with acute meningitis in an emergency department (ED), early diagnosis of the type of infection (bacterial or viral) considerably affects the clinical course and treatment because of the high mortality and morbidity associated with bacterial meningitis (BM). The serum delta neutrophil index (DNI), a new inflammatory marker, reflects the fraction of circulating immature granulocytes and is elevated in cases of bacterial infection. The objective of this study was to evaluate whether serum DNI can be used to differentiate between BM and viral meningitis (VM) in the ED.

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Laminaria japonica has been frequently used as food supplements in many of the Asian countries and as a drug in traditional oriental medicine. This research investigated the effects of Laminaria japonica extract (LJE) on acute phase inflammation in a carrageenan-induced paw edema model, as assessed by histomorphometric and immunohistochemical analyses. The effect of LJE was also evaluated in Raw264.

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Ultraviolet (UV) radiation has been reported to induce cutaneous inflammation such as erythema and edema via induction of proinflammatory enzymes and mediators. Sargassum fulvellum is a brown alga of Sargassaceae family which has been demonstrated to exhibit antipyretic, analgesic, antiedema, antioxidant, antitumor, fibrinolytic, and hepatoprotective activities. The purpose of this study is to investigate anti-inflammatory effects of ethylacetate fraction of ethanol extract of Sargassum fulvellum (SFE-EtOAc) in HaCaT keratinocytes and BALB/c mice.

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Background: Posterior circulation (PC) stroke, which was previously less well known than anterior circulation (AC) stroke, has become more identified due to the development of imaging equipment. Recently, the initial stroke severity assessed by the NIH Stroke Scale (NIHSS) was reported as a useful measure for predicting the outcome of PC as well as AC stroke. The aim of our study was to investigate the factors related to the stroke severity of PC ischemic stroke as assessed by the baseline NIHSS and the predictors of progressive neurological deficit and 3-month outcome.

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Acute exposure to ultraviolet (UV) radiation causes pro-inflammatory responses via diverse mechanisms including oxidative stress. Codium fragile is a green alga of Codiales family and has been reported to exhibit anti-edema, anti-allergic, anti-protozoal and anti-mycobacterial activities. In this study, we have investigated a novel anti-inflammatory potential of C.

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Background: Self-expandable metal stents are effective palliation for malignant gastric outlet obstruction. The aims of study were to evaluate efficacy and safety of double-layered Comvi, uncovered and covered stent to find out protocols which enhance stent patency.

Methods: We retrospectively analysed data from 224 patients who underwent endoscopic stent placement for malignant gastric outlet obstruction caused by stomach cancer from 2006 to 2011.

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Background And Purpose: Charcot-Marie-Tooth disease (CMT) type 1A (CMT1A) is the demyelinating form of CMT that is significantly associated with PMP22 duplication. Some studies have found that the disease-related disabilities of these patients are correlated with their compound muscle action potentials (CMAPs), while others have suggested that they are related to the nerve conduction velocities. In the present study, we investigated the correlations between the disease-related disabilities and the electrophysiological values in a large cohort of Korean CMT1A patients.

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Ultraviolet (UV) radiation has been shown to generate reactive oxygen species (ROS), such as singlet oxygen, superoxide radicals, hydroxyl radicals and hydrogen peroxide in a variety of cells. These ROS have the potential to damage critical cellular components such as DNA, proteins, and lipids and eventually result in physical and chemical damage to tissues that may lead to cell death. The steamed root of Rehmannia glutinosa (Saeng Jihuang, SJH) is reported to have an antioxidant activity.

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A 18-year-old girl visited the hospital due to hematochezia. Colonoscopy revealed a 6-mm Yamada type II polyp with stigmata of bleeding, and a shallow ulcer on top was found at the cecum base. The polyp was removed by snare polypectomy, and hematochezia stopped thereafter.

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A high concentration of glucose has been implicated as a causal factor in initiation and progression of diabetic complications, and there is evidence to suggest that hyperglycemia increases the production of free radicals and oxidative stress. Therefore, compounds that scavenge reactive oxygen species may confer regulatory effects on high glucose-induced apoptosis. Epigallocatechin gallate (EGCG), the major polyphenolic of green tea, is reported to have an antioxidant activity.

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