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1.
Journal of the Korean Society of Laryngology Phoniatrics and Logopedics ; : 11-15, 2023.
Article in Korean | WPRIM | ID: wpr-1001884

ABSTRACT

Background and Objectives@#The global coronavirus disease 2019 (COVID-19) pandemic has had a major impact on healthcare, especially in the area of critical care due to the longer period of mechanical ventilation. Ultrasound-guided percutaneous tracheostomy (US-PDT) is considered a safe alternative method.Materials and Method Patients with severe COVID-19 hospitalized in the intensive care unit (ICU) who were on mechanical ventilation for 5 days or longer were evaluated for percutaneous dilational tracheostomy. The procedure was performed with personal protective equipment with powered air purifying respirator (PAPR) in the ICU isolated by negative pressure. Parameters such as mortality, incidence of infection to medical staff, major and minor complications were observed. @*Results@#The average time taken for US-PDT was 6.4 minutes. Five patients (27.8%) showed oxygen saturation of less than 90% due to apnea during tracheotomy, but there was no case of severe hypoxemia that required discontinuation or re-intubation. There was no COVID-19 infection of medical staff related to the procedure. A total of 9 patients (50%) died from COVID-19 pneumonia, and 1 patient (5.6%) was decannulated. There was no death due to US-PDT and no serious complications such as pneumothorax or accidental decannulation were observed. @*Conclusion@#As patients eligible for tracheostomy increased significantly due to the COVID-19 epidemic, US-PDT can be considered to be a useful technique for COVID-19 patients who require long-term mechanical ventilation. This technique can lower the risk of transmission to medical staffs who are at the forefront of being exposed to the risk of infection when an epidemic breaks out.

2.
Korean Journal of Otolaryngology - Head and Neck Surgery ; : 813-817, 2022.
Article in Korean | WPRIM | ID: wpr-969053

ABSTRACT

The traditional approach to diagnosis and management of Zenker’s diverticulum is open surgical treatment. More recently, however, endoscopic technique is also frequently used for Zenker’s diverticulum because it has advantages of shortening operation time, postoperative hospitalization and reducing the complication such as recurrent laryngeal nerve injury. A 75-year-old male, who was diagnosed with Zenker’s diverticulum, underwent a secondary open diverticulectomy after failed attempt at rigid transoral endoscopic diverticulotomy. Here we report this case with a review of literature.

3.
Journal of the Korean Society of Laryngology Phoniatrics and Logopedics ; : 94-97, 2021.
Article in Korean | WPRIM | ID: wpr-893529

ABSTRACT

Muscle tension dysphonia (MTD) is a voice disorder characterized by excessive tension of the laryngeal muscles during phonation. Voice therapy is the gold standard of treatment for MTD. However, patients with MTD do not always respond to voice therapy. Multidisciplinary approaches have been attempted to treat intractable MTD such as lidocaine instillation, lidocaine injection to recurrent laryngeal nerve, botox injection and excision of false ventricle using CO2 laser. Recently, injection laryngoplasty is suggested that assists in more efficient phonation and voice therapy to MTD patients. A patient with intractable MTD underwent lidocaine injection and injection laryngoplasty showed improved voice quality and remained stable until postoperative 3 months without any complications.

4.
Journal of the Korean Society of Laryngology Phoniatrics and Logopedics ; : 94-97, 2021.
Article in Korean | WPRIM | ID: wpr-901233

ABSTRACT

Muscle tension dysphonia (MTD) is a voice disorder characterized by excessive tension of the laryngeal muscles during phonation. Voice therapy is the gold standard of treatment for MTD. However, patients with MTD do not always respond to voice therapy. Multidisciplinary approaches have been attempted to treat intractable MTD such as lidocaine instillation, lidocaine injection to recurrent laryngeal nerve, botox injection and excision of false ventricle using CO2 laser. Recently, injection laryngoplasty is suggested that assists in more efficient phonation and voice therapy to MTD patients. A patient with intractable MTD underwent lidocaine injection and injection laryngoplasty showed improved voice quality and remained stable until postoperative 3 months without any complications.

5.
The Korean Journal of Physiology and Pharmacology ; : 469-477, 2013.
Article in English | WPRIM | ID: wpr-727494

ABSTRACT

This study investigated effect of extract containing quercetin-3-O-beta-D-glucuronopyranoside from Rumex Aquaticus Herba (ECQ) against chronic gastritis in rats. To produce chronic gastritis, the animals received a daily intra-gastric administration of 0.1 ml of 0.15% iodoacetamide (IA) solution for 7 days. Daily exposure of the gastric mucosa to IA induced both gastric lesions and significant reductions of body weight and food and water intake. These reductions recovered with treatment with ECQ for 7 days. ECQ significantly inhibited the elevation of the malondialdehyde levels and myeloperoxidase activity, which were used as indices of lipid peroxidation and neutrophil infiltration. ECQ recovered the level of glutathione, activity of superoxide dismutase (SOD), and expression of SOD-2. The increased levels of total NO concentration and iNOS expression in the IA-induced chronic gastritis were significantly reduced by treatment with ECQ. These results suggest that the ECQ has a therapeutic effect on chronic gastritis in rats by inhibitory actions on neutrophil infiltration, lipid peroxidation and various steps of reactive oxygen species (ROS) generation.


Subject(s)
Animals , Rats , Body Weight , Drinking , Gastric Mucosa , Gastritis , Glutathione , Iodoacetamide , Lipid Peroxidation , Malondialdehyde , Neutrophil Infiltration , Peroxidase , Quercetin , Reactive Oxygen Species , Rumex , Superoxide Dismutase
6.
The Korean Journal of Physiology and Pharmacology ; : 81-87, 2013.
Article in English | WPRIM | ID: wpr-727485

ABSTRACT

Quercetin-3-O-beta-D-glucuronopyranoside (QGC) is a flavonoid glucoside extracted from Rumex Aquaticus Herba. In the present study, anti-oxidative and anti-inflammatory effects of QGC were tested in vitro. Epithelial cells obtained from cat esophagus were cultured. When the cells were exposed to acid for 2 h, cell viability was decreased to 36%. Pretreatment with 50 microM QGC for 2 h prevented the reduction in cell viability. QGC also inhibited the productions of intracellular ROS by inflammatory inducers such as acid, lipopolysaccharide, indomethacin and ethanol. QGC significantly increased the activities of superoxide dismutase (SOD) and catalase, and also induced the expression of SOD2, while it restored the decrease of catalase expression in cells exposed to acid. QGC inhibited NF-kappaB translocation, cyclooxygenase-2 expression and PGE2 secretion in cells exposed to acid, which plays an important role in the pathogenesis of esophagitis. The data suggest that QGC may well be one of the promising substances to attenuate oxidative epithelial cell injury and inflammatory signaling in esophagus inflammation.


Subject(s)
Animals , Cats , Catalase , Cell Survival , Cyclooxygenase 2 , Dinoprostone , Epithelial Cells , Esophagitis , Esophagus , Ethanol , Indomethacin , Inflammation , NF-kappa B , Quercetin , Rumex , Superoxide Dismutase
7.
The Korean Journal of Physiology and Pharmacology ; : 455-462, 2012.
Article in English | WPRIM | ID: wpr-728182

ABSTRACT

This study was designed to determine the protective effect of Rumex Aquaticus Herba extracts containing quercetin-3-beta-D-glucuronopyranoside (ECQ) on experimental reflux esophagitis. Reflux esophagitis was induced by surgical procedure. The rats were divided into seven groups, namely normal group, control group, ECQ (1, 3, 10, 30 mg/kg) group and omeprazole (30 mg/kg) group. ECQ and omeprazole groups received intraduodenal administration. The Rats were starved for 24 hours before the experiments, but were freely allowed to drink water. ECQ group attenuated the gross esophagitis significantly compared to that treated with omeprazole in a dose-dependent manner. ECQ decreased the volume of gastric juice and increased the gastric pH, which are similar to those of omeprazole group. In addition, ECQ inhibited the acid output effectively in reflux esophagitis. Significantly increased amounts of malondialdehyde (MDA), myeloperoxidase (MPO) activity and the mucosal depletion of reduced glutathione (GSH) were observed in the reflux esophagitis. ECQ administration attenuated the decrement of the GSH levels and affected the MDA levels and MPO activity. These results suggest that the ECQ has a protective effect which may be attributed to its multiple effects including anti-secretory, anti-oxidative and anti-inflammatory actions on reflux esophagitis in rats.


Subject(s)
Animals , Rats , Control Groups , Esophagitis , Esophagitis, Peptic , Gastric Juice , Glutathione , Hydrogen-Ion Concentration , Malondialdehyde , Omeprazole , Peroxidase , Rumex , Water
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