Black spot of sweet persimmon, caused by Alternaria alternata, occurred in an orchard in Gyeongnam province, Korea in 2012. The symptom was appearance of 0.5 to 4 cm black spots on the surface of fruit. The pathogen was isolated from flesh of disease lesions. The causal agent was identified as A. alternata by morphological characteristics and sequencers of the internal transcribed spacer (ITS) 1 and ITS4 regions of rRNA. Artificial inoculation of the pathogen resulted in development of disease symptoms and the re-isolated pathogen showed characteristics of A. alternata.
Alternaria* ; Diospyros* ; Fruit* ; Korea

Restoring lost teeth is very important in terms of both function and aesthetics. If tooth loss occurs in the posterior region and the loss of support is persistent, it may cause a gradual shift in the position of the mandible and a change in occlusion. This clinical case attempted to restore support for the posterior teeth with a fixed prosthesis using implants in a patient whose opposing teeth were erupted and the occlusal plane collapsed due to long-term loss of the maxillary left posterior teeth and mandibular right first molars. To correct the occlusal plane of remaining dentition, wax-up of maxillary left posterior teeth was duplicated with acrylic resin and placed on maxilla. Surgical template for implant placement were fabricated using digital technology. After the support of the posterior teeth was restored with the placement of the implant, stable occlusion with temporary restorations was observed for a sufficient time. Afterwards, monolithic zirconia prosthesis was placed on the patient to ensure functional and aesthetic improvement.

BACKGROUND: Acute respiratory distress syndrome (ARDS) remains a life-threatening disease. Many patients with ARDS do not recover fully, and progress to terminal lung fibrosis. Angiotensin-converting enzyme (ACE) inhibitor is known to modulate the neurohormonal system to reduce inflammation and to prevent tissue fibrosis. However, the role of ACE inhibitor in the lungs is not well understood. We therefore conducted this study to elucidate the effect of renin-angiotensin system (RAS) blockage on the prognosis of patients with ARDS. METHODS: We analyzed medical records of patients who were admitted to the medical intensive care unit (ICU) at a tertiary care hospital from January 2005 to December 2010. ARDS was determined using the Berlin definition. The primary outcome was the mortality rate of ICU. Survival analysis was performed after adjustment using propensity score matching. RESULTS: A total of 182 patients were included in the study. Thirty-seven patients (20.3%) took ACE inhibitor or angiotensin receptor blocker (ARB) during ICU admission, and 145 (79.7%) did not; both groups showed similar severity scores. In the ICU, mortality was 45.9% in the RAS inhibitor group and 58.6% in the non-RAS inhibitor group (P = 0.166). The RAS inhibitor group required a longer duration of mechanical ventilation (29.5 vs. 19.5, P = 0.013) and longer ICU stay (32.1 vs. 20.2 days, P < 0.001). In survival analysis, the RAS inhibitor group showed better survival rates than the non-RAS group (P < 0.001). CONCLUSIONS: ACE inhibitor or ARB may have beneficial effect on ARDS patients.
Angiotensin Receptor Antagonists ; Angiotensin-Converting Enzyme Inhibitors ; Angiotensins ; Berlin ; Case-Control Studies* ; Fibrosis ; Humans ; Inflammation ; Intensive Care Units ; Lung ; Medical Records ; Mortality ; Prognosis ; Propensity Score ; Renin-Angiotensin System* ; Respiration, Artificial ; Respiratory Distress Syndrome, Adult* ; Retrospective Studies* ; Survival Rate ; Tertiary Healthcare

Early removal of a percutaneous transhepatic biliary drainage (PTBD) tube commonly causes pneumoperitoneum. However, we encountered a patient who developed pneumoperitoneum even with an indwelling PTBD tube. An 84-year-old man was admitted with type III combined duodenal and biliary obstruction secondary to metastatic bladder cancer. A biliary stent was placed using a percutaneous approach, and a duodenal stent was placed endoscopically. A large amount of subphrenic free air was detected after the procedures. Laboratory tests indicated intestinal perforation; however, peritoneal signs were absent. The patient was treated conservatively using an indwelling Levin tube. Seven days later, the massive amount of subphrenic free air disappeared. Follow-up tubography revealed unrestricted bile flow into the small intestine, and the PTBD tube was removed. Prolonged endoscopic procedures in patients with a PTBD tract communicating with the gastrointestinal tract can precipitate pneumoperitoneum. Clinicians should be careful to avoid misdiagnosing this condition as intestinal perforation.
Aged, 80 and over ; Bile ; Drainage ; Follow-Up Studies ; Gastrointestinal Tract ; Humans ; Intestinal Perforation ; Intestine, Small ; Pneumoperitoneum ; Stents ; Urinary Bladder Neoplasms

Objective: This study investigates the characteristics of patients who were re-transferred from other hospitals to regional or local emergency medical centers. Methods: Data from 2016 to 2017 was obtained from the National Emergency Department Information System (NEDIS). The study population was classified as ‘transferred group’ and ‘direct visit group.’ The transferred group was further subdivided into the ‘re-transfer group’ (patients transferred out to another hospital) and ‘single transfer group’ (patients not transferred out). Multiple logistic regression analysis was performed to identify factors associated with re-transfer. Results: The re-transfer rate (3.7%) of the ‘transferred group’ was higher than the transfer rate (1.3%) of the ‘direct visit group’. Multiple regression analysis revealed that older age, male (adjusted odds ratio [aOR], 1.082; 95% confidence interval [CI], 1.606-1.105), medical aid (aOR, 1.231; 95% CI, 1.191-1.105), injury origin (aOR, 1.063; 95% CI, 1.006-1.122), and Korean Triage and Acuity Scale level 1 or 2 (aOR, 1.214; 95% CI, 1.182-1.247), are associated with re-transfer. The Korean Standard Classification of Diseases group having the highest re-transfer rate was determined to be the neoplasm disease group. Conclusion Data from the current study reveals that factors associated with an increased likelihood of re-transfer were high severity, old age, medical aid, and neoplasm diagnosis. Considering these characteristics of re-transferred patients, it is necessary to improve the transfer system to reduce re-transfers. However, further research is required, including the reasons for the transfer.

Objective: The purpose of this study was to analyze the effects of emergency department length of stay (ED LOS) on the prognosis of patients classified in 28 severe illness diagnosis code groups. Methods: We used data from the National Emergency Department Information System (NEDIS) from 2016 to 2017. Patients with severe illness diagnosis codes as per the discharge diagnosis reports of the emergency department were included and classified into 28 diagnosis code groups. We used multiple logistic regression analysis on the various diagnosis groups to determine whether 6 hours of ED LOS was a factor influencing mortality. Results: Of the 18,217,034 patients in the NEDIS data, 553,918 patients were hospitalized with a severe illness code at regional or local emergency medical centers. The average ED LOS was 389 minutes in the non-survivor group and 420 minutes in the survivor group. After adjusting for confounders, ED LOS >6 hours was associated with lower mortality (odds ratio, 0.737; 95% confidence interval, 0.715-0.759). The association of ED LOS >6 hours with lower mortality was found in the diagnosis groups for acute myocardial infarction, intracranial hemorrhage, major trauma, aortic dissection, gastrointestinal bleeding/foreign bodies, intoxication, acute kidney injury, and post-resuscitation status. Conclusion In the analysis for the 28 severe disease illness code groups, ED LOS of more than 6 hours was not a factor that adversely affects the in-hospital mortality.

Discharge against medical advice remains a problematic issue worldwide because it may not only lead to adverse medical outcomes for the patients but also medicolegal problems for emergency physicians. Recently, there have been cases in Korea in which a patient in the emergency room, who had been discharged from hospital without following medical instructions, filed a lawsuit against the hospital and emergency medical staff for their responsibility for their worsening disease since discharge. The court acknowledged the responsibility of the medical staff. To minimize the legal risk and reach the optimal ethical standard for these patients, this paper suggests the best practice guideline for the emergency physicians for patients who request discharge against medical advice from the emergency department in Korea.

In Korea, the national evaluation program for emergency medical centers (EMCs) was introduced in 2003. EMCs in Korea have three levels of emergency centers including regional emergency centers, local emergency centers, and local emergency rooms. The evaluation system assesses the performance of EMCs at all three levels. The role of both regional emergency centers and local emergency centers administer the final treatment for severe emergency patients, although the definition of severe emergency patients is unclear. These factors may aggravate crowding at the emergency department. The national evaluation system aims to reduce the length of stay in the emergency department. However, reduction of the length of stay at emergency department may cause a conflict with the administration of final treatment for critically ill emergency patients owing to a lack of in-hospital beds. Crowding of the emergency department is not a problem of EMCs but that of the health system. In 2019, the Korean Society of Emergency Medicine performed a study to improve the national evaluation program for EMC and the performance of EMC. Here, we have summarized the results.

BACKGROUND: The number of elderly patients admitted to intensive care units (ICUs) is growing with the increasing proportion of elderly persons in the Korean general population. It is often difficult to make decisions about ICU care for elderly patients, especially when they are in their 90s. Data regarding the proportion of elderly patients in their 90s along with their clinical characteristics in ICU are scarce. METHODS: The records of Korean patients > or = 90 years old who were admitted to the medical ICU in a tertiary referral hospital between January 2005 and December 2014 were retrospectively reviewed. We compared the trend in ICU use and characteristics of these elderly patients between 2005-2009 and 2010-2014. RESULTS: Among 6,186 referred patients, 55 aged > or = 90 years were admitted to the medical ICU from 2005 to 2014. About 58.2% of these patients were male, and their mean age was 92.7 years. Their median Charlson comorbidity index score was 2 (IQR 1-3) and their mean APACHE II score was 25.0 (IQR 19.0-34.0). The most common reason for ICU care was acute respiratory failure. There were no differences in the survival rates between the earlier and more recent cohorts. However, after excluding patients who had specified "do not resuscitate" (DNR), the more recent group showed a significantly higher survival rate (53.8% mortality for the earlier group and 0% mortality for the recent group). Among the survivors, over half were discharged to their homes. More patients in the recent cohort (n=26 [78.8%]) specified DNR than in the earlier cohort (n=7 [35.0%], p=0.004). The number and proportion of patients > or = 90 years old among patients using ICU during the 2005-2014 study period did not differ. CONCLUSIONS: The use of ICU care by elderly patients > or = 90 years old was consistent from 2005-2014. The overall mortality rate tended to decrease, but this was not statistically significant. However, the proportion of patients specifying DNR was higher among more recent patients, and the recent group showed an even better survivorship after sensitivity analysis excluded patients specifying DNR.
Aged* ; APACHE ; Cohort Studies ; Comorbidity ; Humans ; Intensive Care Units ; Critical Care* ; Korea* ; Male ; Mortality ; Respiratory Insufficiency ; Retrospective Studies ; Survival Rate ; Survivors ; Tertiary Care Centers*

PURPOSE: The purpose of this study is to evaluate the usefulness and necessity of an emergency medical service director program for board certified emergency physicians. METHODS: A retrospective analysis of records of direct medical advice provided by board certified emergency physicians in the Busan area from April 1, 2011 to July 11, 2011 was conducted. The medical and legal validity of the medical direction was evaluated by two independent emergency physicians with experience and certification in the field of medical control. RESULTS: Fifteen emergency physicians provided direct medical control during the study period. Five of them were certified as an emergency medical service (EMS) director by the Korean council of EMS physicians (KCEMSP), and the other 10 were not. An analysis of 992 cases of direct medical direction was performed. No differences in the diagnostic appropriateness and medical validity of medical advice were observed between the two groups. A significant difference was observed in legal validity (p=0.048). However, in multivariate analysis, experience as a certified emergency physician was a significant factor determining legal validity (p=0.02), while certification by the KCEMSP was not significant. CONCLUSION: The current EMS director certification program did not have a significant influence on the appropriateness of direct medical direction. EMS director courses and emergency medicine residency programs are in need of improvement in the legal aspect of prehospital emergency service.
Certification ; Emergencies ; Emergency Medical Service Communication Systems ; Emergency Medical Services ; Emergency Medicine ; Humans ; Internship and Residency ; Jurisprudence ; Multivariate Analysis ; Physician Executives ; Retrospective Studies