• Journal of Korean Society of Industrial and Systems Engineering
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• v.35 no.4
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• pp.33-40
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• 2012

Dentists are known to be highly exposed to the musculoskeletal disorders (MSD). The present study investigated the prevalence of MSD among Korean dentists and association between their MSD and physical workload. In addition, detailed causes related to the physical workloads were identified in dental operation, and needs for improvement of dental instrument and environment were collected from Korean dentists. The standardized Nordic questionnaire was used to survey body troubles and three types of questionnaires were made to investigate the physical workloads, causes of the physical workloads and improvement priority of dental equipments, respectively. A total of 104 Korean dentists were participated in the survey. Neck trouble (82%) was the most prevalent in Korean dentists, and shoulder (68%) and low back trouble (56%) followed, while low back trouble was reported to be most frequent in previous studies. The body troubles were related to the physical workload of the corresponding body parts, although they were not associated with personal characteristics. Most Korean dentists selected 'to keep direct view inside patient's mouth' and 'no support of the hand with dental instruments' as the causes of awkward and strenuous work postures. They wanted design improvement for some equipment in their operating room such as operating light and arrangement of workplace.

• Korean Journal of Bronchoesophagology
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• v.19 no.1
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• pp.15-18
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• 2013

Esophageal foreign body is common condition for visit emergency room, and most of them were successfully removed with endoscopy. However, in case of esophageal foreign body impaction, it can be difficult to localize the foreign body. We report a 29-year old man with esophageal foreign body impaction. We successfully localized and removed the esophageal submucosal foreign body using rigid endoscopy under C-arm guidance, avoiding more invasive procedure. The patient was followed up without any complication.

• Research in Community and Public Health Nursing
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• v.23 no.4
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• pp.438-445
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• 2012

Purpose: Medical Aid Beneficiaries were surveyed to identify differences in health behaviors, adherence to drug regimen, and quality of life between those people in the Designated Doctor System and those who are not. Methods: A total of 1,327 study subjects were separated into three groups: those in the Designated Doctor System for 2 years, those in for 1 year, and those not in the system. Results: After the introduction of the Designated Doctor System, 55.8% and 67.9%, respectively, of the subjects in the Designated Doctor System complained of inconvenience in relation to hospital use and the patient referral process. Also, the rate of emergency room use or hospitalization guided by the Designated Doctor System was only 8.7% and 6.5%, respectively. There were no significant differences in health behaviors and adherence to drug regimens between those in the Designated Doctor System and those who are not. Conclusion: This study was carried out early in the introduction of the system. Therefore, it is necessary to monitor the positive and negative effects of the Designated Doctor System for a full reflection of its impact.

• Journal of Communications and Networks
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• v.13 no.2
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• pp.132-141
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• 2011

IEEE 802.15.4 networks are a feasible platform candidate for connecting all health-care-related equipment dispersed across a hospital room to collect critical time-sensitive data about patient health state, such as the heart rate and blood pressure. To meet the quality of service requirements of health-care systems, this paper proposes a multi-priority queue system that differentiates between various types of frames. The effect of the proposed system on the average delay and throughput is explored herein. By employing different contention window parameters, as in IEEE 802.11e, this multi-queue system prioritizes frames on the basis of priority classes. Performance under both saturated and unsaturated traffic conditions was evaluated using a novel analytical model that comprehensively integrates two legacy models for 802.15.4 and 802.11e. To improve the accuracy, our model also accommodates the transmission retries and deferment algorithms that significantly affect the performance of IEEE 802.15.4. The multi-queue scheme is predicted to separate the average delay and throughput of two different classes by up to 48.4% and 46%, respectively, without wasting bandwidth. These outcomes imply that the multi-queue system should be employed in health-care systems for prompt allocation of synchronous channels and faster delivery of urgent information. The simulation results validate these model's predictions with a maximum deviation of 7.6%.

• Tuberculosis and Respiratory Diseases
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• v.38 no.1
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• pp.70-73
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• 1991

We have experienced a case of lung injury caused by accidental inhalation of ammonia gas in a 34 year-old-man. By the explosion of ammonia tank in a refrigerator boat he inhaled ammonia gas. Several minutes later, he suffered from severe dyspnea and visual loss. On arrival at emergency room, analysis of arterial blood gas revealed severe hypoxemia and his chest film showed bilateral pulmonary infiltrates. Under the impression of adult respiratory distress syndrome, mechanical ventilator was applied to the patient. After recovery from ARDS and tracheal edema, he complained of some hemoptysis and productive sputum during the admission. So we checked bronchoscopy and bronchograpy which showed tracheal bullae just above carina and tubular bronchiectatic change in the right lower lobe. We report a case of lung injuries-ARDS, tracheal bullae, and bronchiectasis-caused by inhalation of ammonia gas with the review of the relevant literatures.

• Child Health Nursing Research
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• v.3 no.2
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• pp.131-141
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• 1997

The purpose of this study was to propose for protection of childhood injury or accident and to provide safety measures. Data was collected from 2,052 who visited emergency room of E University Hospital during 1 year period from January to December, 1996. The results were as follows : 1. The most common type of accident was fall down (53.4%). 2. Male patients outnumbered female by the ratio of 1.68 : 1. 3. The highest incidence rate of accidents were observed in children between 1-3 years age group(34.9%). 4. Accidents were seasonally more frequent in spring(28.2%). 5. Accidents mainly took place at home (63%). 6. The time of accidental occurrence appeared to be predominantly high during a day 8 : 00 PM to 0 : 00 AM (35.l%). 7. The most frequent involved part of body was head and face (74%). 8. Most patients discharged from the hospital in good condition(85.4%). Through clinical analysis, in the relation to accident, there were statistically significant difference in sex, age, season, injury place(all p=0.000).

• Development and Reproduction
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• v.22 no.1
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• pp.105-109
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• 2018

A 40-year-old G1 P0 L0 A1 woman was referred to our clinic with 6-year history of infertility. Before visiting the clinic, she had 3 cycles of In-Vitro Fertilization (IVF) procedures (2 cycles of Controlled Ovarian Stimulation-IVF and 1 cycle of frozen-thawed Embryo Transfer (ET)) at other clinic. She had medical history of abortion at early gestation following FET (frozen-thawed-ET). The patient had complete type of septate uterus, double cervix and longitudinal vaginal septum. Vaginal septotomy was done first and 1 month later, hysteroscopic septoplasty was followed using ballooning filled with dye. After septoplasty, we inserted ballooning and left for several days to compress septal endometrium on the septectomy area. All procedures were done in the ambulatory operating room without laparoscopy or admission. 3 months later, she had in vitro fertilization-embryo transfer (IVF-ET) and FET procedures in our clinic. She had successful pregnancy and now is at 22 weeks of gestation. New ambulatory septoplasty using dye-filled ballooning is easy, safe and minimally invasive surgery for treatment of complete septate uterus.

• Journal of Chest Surgery
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• v.37 no.5
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• pp.456-459
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• 2004

A 16 month old male infant was found with slip down state in a bath room without evidence of trauma to whole body. The infant was treated with several thoracentesis and closed drainage due to persistent right pleural effusion at other hospital and transferred to our hospital for further evaluation and treatment at July 2003. The pleural effusion was confirmed as chylothorax by chemical analysis. He was treated with parenteral feeding for 21 days. Because the amount of chest tube drainage was about 110∼210 cc/day, and could not be decreased with conservative treatment. patients underwent ligation of thoracic duct. Post-operative course was uneventful except post-op. empyema thoracis, The open drainage tube was removed at post operative 30 days, The patient was in very good condition with complete cure until post-operative 3 months.

• Journal of Chest Surgery
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• v.29 no.11
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• pp.1263-1266
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• 1996

We have experienced a case of coronary artery bypass surgery without extracorporeal circulation through limited anterior thoracotomy. The lesion was a single vessel disease involving the take off of the left anterior descending artery(LAD) which showed tubular lesion with irregular contour and eccentric stenosis of more than 95% luminal narrowing. Percutaneous transluminal coronary angioplasty(PTCA) seemed to have moderate success rate and moderate complication rate. A segment of left internal mammary artery(LIMA) from the second rib down to the sixth rib was harvested through the bed of resected fourth costal cartilage. Anastomosis between LIMA and LAD was performed under beating condition. The patient was extubated in the operation room and showed excellent postoperative course without complications. The coronary angiography on the postoperative 7th day revealed good patency at the anastomosis site.

• Journal of Chest Surgery
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• v.53 no.4
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• pp.184-190
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• 2020

Radiation therapy (RT) has improved patient outcomes, but treatment-related complication rates remain high. In the conventional 2-dimensional and 3-dimensional conformal RT (3D-CRT) era, there was little room for toxicity reduction because of the need to balance the estimated toxicity to organs at risk (OARs), derived from dose-volume histogram data for organs including the lung, heart, spinal cord, and liver, with the planning target volume (PTV) dose. Intensity-modulated RT (IMRT) is an advanced form of conformal RT that utilizes computer-controlled linear accelerators to deliver precise radiation doses to the PTV. The dosimetric advantages of IMRT enable better sparing of normal tissues and OARs than is possible with 3D-CRT. A major breakthrough in the treatment of esophageal cancer (EC), whether early or locally advanced, is the use of proton beam therapy (PBT). Protons deposit their highest dose of radiation at the tumor, while leaving none behind; the resulting effective dose reduction to healthy tissues and OARs considerably reduces acute and delayed RT-related toxicity. In recent studies, PBT has been found to alleviate severe lymphopenia resulting from combined chemo-radiation, opening up the possibility of reducing immune suppression, which might be associated with a poor prognosis in cases of locally advanced EC.