The Korea National Health and Nutrition Examination Survey (KNHANES) is a national program designed to assess the health and nutritional status of the noninstitutionalized population of South Korea. The KNHANES was initiated in 1998 and has been conducted annually since 2007. Starting in the latter half of 2008, ophthalmologic examinations were included in the survey in order to investigate the prevalence and risk factors of common eye diseases such as visual impairment, refractive errors, strabismus, blepharoptosis, cataract, pterygium, diabetic retinopathy, age-related macular degeneration, glaucoma, dry eye disease, and color vision deficiency. The measurements included in the ophthalmic questionnaire and examination methods were modified in the KNHANES IV, V, and VI. In this article, we provide detailed information about the methodology of the ophthalmic examinations in KNHANES in order to aid in further investigations related to major eye diseases in South Korea.
*Epidemiologic Methods ; Eye Diseases/*epidemiology ; Humans ; Nutrition Surveys/*statistics & numerical data ; Ophthalmology/*methods ; Prevalence ; Republic of Korea/epidemiology ; Risk Factors ; *Surveys and Questionnaires

PURPOSE: This study was conducted in order to determine the current status of duty hours of emergency resident physicians in Korea. METHODS: The training committee of the Korean Society of Emergency Medicine surveyed using a questionnaire on resident training status, which contained the total number of duty hours during four weeks of July (first to 28th day) according to the grades of the resident physician. The proportions of both irregular working hours and independent working hours without supervision of a board certified physician were also evaluated. RESULTS: Responses from 80 hospitals out of 97 training hospitals were analyzed. The average number of duty hours of emergency resident physicians was 63.7+/-10.7 hours/week. The proportion of hospitals for which the average number of duty hours exceeded 80 hours/week was 16.1%. Irregular working hours consisted of 63.9%. Residents in 15(18.7%) hospitals worked 3.7~73.5% of their duty hours without supervision of a board certified physician. The higher grade resident had fewer working hours (p<0.001). No statistical difference was observed in the rate of both irregular work and unsupervised work according to the grade. CONCLUSION: Results of this study showed that nine(11.3%) hospitals had average duty hours above 80 hours/week. In Korea, training hospitals should prepare to minimize the impact of duty hour restriction in the near future, as well as to improve training quality.
Cross-Sectional Studies* ; Emergencies* ; Emergency Medicine ; Emergency Service, Hospital ; Korea ; Organization and Administration ; Surveys and Questionnaires

Tracheoesophageal fistula (TEF) is a rare disease which develops as a result of congenital or acquired causes. We report on two TEF female stroke patients with associated endotracheal intubation. Endotracheal intubation was kept for 13-14 days because of decreased mentality by intracranial hemorrhage. Recurrent pneumonia was a predominant symptom. Computed tomography and bronchoscopy were used to diagnose TEF. Both patients expired by sepsis and recurrent pneumonia before definite TEF treatment. The excessive dilatation of the cuff balloon of the endotracheal tube was considered one of the main causes of TEF. Prevention is most important and early treatment is required in this fatal disease.
Bronchoscopy ; Dilatation ; Female ; Humans ; Intracranial Hemorrhages ; Intubation, Intratracheal* ; Pneumonia ; Rare Diseases ; Sepsis ; Stroke ; Tracheoesophageal Fistula*

Tracheoesophageal fistula (TEF) is a rare disease which develops as a result of congenital or acquired causes. We report on two TEF female stroke patients with associated endotracheal intubation. Endotracheal intubation was kept for 13-14 days because of decreased mentality by intracranial hemorrhage. Recurrent pneumonia was a predominant symptom. Computed tomography and bronchoscopy were used to diagnose TEF. Both patients expired by sepsis and recurrent pneumonia before definite TEF treatment. The excessive dilatation of the cuff balloon of the endotracheal tube was considered one of the main causes of TEF. Prevention is most important and early treatment is required in this fatal disease.
Bronchoscopy ; Dilatation ; Female ; Humans ; Intracranial Hemorrhages ; Intubation, Intratracheal* ; Pneumonia ; Rare Diseases ; Sepsis ; Stroke ; Tracheoesophageal Fistula*

BACKGROUND: Porous beta-calcium pyrophosphate (beta-CPP) was developed to improve the fusion success of posterolateral lumbar fusion (PLF). The possibility of accomplishing PLF using a mixture of porous beta-CPP and iliac bone was studied. This paper reports the radiologic results of PLF using the beta-CPP plus autograft for lumbar degenerative disease as a bone graft extender. METHODS: A prospective, case-matched, radiographic study evaluating the results of short segment lumbar fusion using a beta-CPP plus autograft was performed to compare the efficacy of beta-CPP plus autograft with that of an autograft alone for short segment lumbar fusion. Thirty one consecutive patients (46 levels) underwent posterolateral fusion with pedicle screw fixation and additional posterior lumbar interbody fusion. In all patients, 3 mL of beta-CPP plus 3 mL of autogenous bone graft was placed randomly in one side of a posterolateral gutter, and 6 mL of autogenous iliac bone graft was placed on the other. The fusion rates, volumes of fusion masses, and bone absorption percentage were evaluated postoperatively using simple radiographs and 3 dimensional computed tomography (3D-CT) scans. RESULTS: The control sides treated with an autograft showed significantly better Lenke scores than the study sides treated with beta-CPP at 3 and 6 months postoperatively, but there was no difference between the two sides at 12 months. The fusion rates (confirmed by 3D-CT) were 87.0% in the beta-CPP group and 89.1% in the autograft group, which were not significantly different. The fusion mass volumes and bone absorption percentage at 12 months postoperatively were 2.49 mL (58.4%) and 1.89 mL (69.5%) for the beta-CPP and autograft groups, respectively, and mean fusion mass volume was significantly higher in the beta-CPP group. CONCLUSIONS: beta-CPP combined with an autograft is as effective as autologous bone for grafting during instrumented posterolateral spinal fusion. These findings suggest that beta-CPP bone chips can be used as a novel bone graft extender for short-segment posterolateral spinal fusion.
Adult ; Aged ; *Bone Substitutes ; *Bone Transplantation ; Calcium Pyrophosphate/*administration & dosage ; Female ; Humans ; Ilium ; Imaging, Three-Dimensional ; Lumbar Vertebrae/radiography/*surgery ; Male ; Middle Aged ; Spinal Fusion/*methods ; Tomography, X-Ray Computed

Postoperative infections following spine surgery are usually attributable to bacterial organisms. Staphylococcus aureus is known to be the most common single pathogen leading to this infection, and the number of infections caused by methicillin-resistant Staphylococcus aureus is increasing. However, there is a paucity of literature addressing postoperative infection with Mycobacterium tuberculosis. We encountered a case of tuberculous spondylitis after spine surgery. A man had fever with low back pain three weeks after posterior interbody fusion with instrumentation for a herniated intervertebral disc at the L4-L5 level. He had been treated with antibiotics for an extended period of time under the impression that he had a bacterial infection, but his symptoms and laboratory data had not improved. Polymerase chain reaction for Mycobacterium tuberculosis turned out to be positive. The patient's symptoms finally improved when he was treated with antituberculosis medication.
Adult ; Humans ; Low Back Pain/etiology ; Lumbar Vertebrae/surgery ; Male ; Postoperative Complications/*microbiology ; Spondylitis/etiology/*microbiology ; Thoracic Vertebrae/*microbiology/pathology ; Tuberculosis/drug therapy/*microbiology ; Tuberculosis, Spinal/complications/drug therapy/*microbiology

PURPOSE: To evaluate the outcomes of distal tibial open fractures treated by two-staged delayed minimally invasive percutaneous plate osteosynthesis (MIPPO) technique. MATERIALS AND METHODS: 25 cases of distal tibial open fractures were treated with temporary ring fixation and two-staged delayed MIPPO. A mean age was 46 years old, follow-up was 23 months. The type of fracture was evaluated using the AO/OTA classification. The type of open fracture was evaluated using the Gustilo-Anderson classification that revealed 6 cases of type I, 9 cases of type II, 8 cases of type IIIA and 2 cases of type IIIB. We analyzed the radiologic results and postoperative complications. The clinical and functional result were evaluated by using Teeny and Wiss scores. RESULTS: The average time of bone union was 18 weeks in 24 cases. There were three delayed union that achieved union twenty weeks after second operation, and 1 case underwent bone graft with additional plate fixation. 6 cases of skin necrosis were treated with skin graft, 2 cases were treated with flap. The clinical and functional assessment showed that 6 cases were excellent, 16 cases were good, 2 cases were fair, and 1 case were poor results. CONCLUSION: Two-staged MIPPO technique for distal tibia open fractures seems to be a good procedure to obtain bone union.
Follow-Up Studies ; Fractures, Open ; Necrosis ; Postoperative Complications ; Skin ; Tibia ; Transplants

Synovial chondromatosis is an uncommon lesion, which is characterized by cartilaginous and osseous metaplasia of the joint synovium. Synovial chondromatosis usually involves a large joint and rarely occurs in the hand. Intra-articular synovial chondromatosis during the hand should be considered in the differential diagnosis of swollen, stiff or painful joints. Other possible diagnoses include osteoarthritis, rheumatoid arthritis, gout, trauma and chronic infection. Moreover, if enchondral ossification of loose bodies is not seen a diagnosis of synovial chondromatosis can not be made preoperatively. Intra-articular synovial chondromatosis is a benign condition and surgical synovectomy remains the most effective treatment. The authors report a case of synovial chondromatosis of the fifth metacarpophalangeal joint.
Arthritis, Rheumatoid ; Chondromatosis ; Chondromatosis, Synovial ; Diagnosis, Differential ; Gout ; Hand ; Joints ; Metaplasia ; Osteoarthritis ; Synovial Membrane

PURPOSE: This study evaluated the operability for disease of lumbar intervertebral disc (LID) of practitioners and pay doctors of orthopedic surgeons and neurosurgeons by examining their websites. MATERIALS AND METHODS: From March 2006 to April 2006, we searched the internet using the key words orthopedic surgery and neurosurgery, with NAVER as the portal site. There were 68 homepages of orthopedic hospitals and physician's offices (OHP) and 27 homepages of neurosurgical hospitals and physician's offices (NHP). Each homepage was visited in order to survey the operability for disease of an intervertebral disc and the number of board of orthopedists and neurosurgeons. Statistical analysis was carried out using a chi-square test. RESULTS: In 45.6% (31/68) of OHP and 85.2% (23/27) of NHP, the operation for LID was performed and there was significant difference (p<0.001). In 16.2% (11/68) of OHP, neurosurgeons employed by OHP performed the operation for spinal disorders. In 29.4% of OHP, the orthopedic surgeon performed the operation for LID. Orthopedists were employed in 51.9% of NHP. NHP were significantly higher than OHP in the cases in whom the orthopedists and neurosurgeons worked together in a single hospital (p<0.001). CONCLUSION: In 70% of OHP, surgery for LID was not performed. A survey about reasons for not performing operation for LID and improvement of that reasons should be carried out by the medical association.
Internet ; Intervertebral Disc ; Neurosurgery ; Orthopedics ; Physicians' Offices

Posthypoxic myoclonus is poorly controlled with current treatments. Based on clinical experience, valproate and benzodiazepines have been used to treat myoclonic seizures. Rarely, some antiepileptic drugs may exacerbate myoclonic seizures. Although lamotrigine is controversial for treatment in myoclonic seizures, we experience a case of posthypoxic myoclonus improved with lamotrigine add-on therapy.
Anticonvulsants ; Benzodiazepines ; Myoclonus* ; Seizures ; Valproic Acid