No abstract available.
Humans

Background: Breaking the chain of disease transmission from overseas is necessary to control new infectious diseases such as coronavirus disease 2019 effectively. In this study, we developed a mobile app called Self-Symptom Checker (SSC) to monitor the health of inbound travelers. Methods: SSC was developed for general users and administrators. The functions of SSC include non-repudiation using QR (quick response) codes, monitoring fever and respiratory symptoms, and requiring persons showing symptoms to undergo polymerase chain reaction tests at nearby screening stations following a review of reported symptoms by the Korea Disease Control and Prevention Agency, as well as making phone calls, via artificial intelligence or public health personnel, to individuals who have not entered symptoms to provide the necessary information. Results: From February 12 to March 27, 2020, 165,000 people who were subjected to the special entry procedure installed SSC. The expected number of public health officers and related resources needed per day would be 800 if only the phone was used to perform symptom monitoring during the above period. Conclusion By applying SSC, more effective symptom monitoring was possible. The daily average number of health officers decreased to 100, or 13% of the initial estimate. SSC reduces the work burden on public healthcare personnel. SSC is an electronic solution conceived in response to health questionnaires completed by inbound travelers specified in the World Health Organization International Health Regulations as a requirement in the event of a pandemic.

BACKGROUND: OSCE was conducted to measure the immediate outcome of ICM. The measurement focused on basic clinical skills. METHODS: The subject of study was 115 third year medical students who took ICM course. The examination consisted of ten 5-minute stations with nine cases that represented commonly encountered problems in primary care. OSCE stations were duplicated into two sites. Therefore, same OSCE was performed six times in each sites. We evaluated the reliability of OSCE scores and compared the mean scores according to the examination sites and time sequences. Also, we got feedback from all participants by questionnaires. RESULTS: Mean of total OSCE score was 52.1. Cronbach alpha of total station was 0.559. For blood pressure check, lung physical examination, and neck mass physical examination station, there was a significant difference in mean scores as the time sequences(p<0.05). Both students and examiners evaluated the OSCE positively, and felt that OSCE was meaningful experience to prepare clinical skills. CONCLUSION: We can confirm that OSCE is a reasonable evaluation tool for ICM. However, further trials to develop the more reliable and valid examinations will be warranted.
Blood Pressure ; Clinical Competence ; Clinical Medicine* ; Humans ; Lung ; Neck ; Physical Examination ; Primary Health Care ; Students, Medical ; Surveys and Questionnaires

BACKGROUND: Transforming growth factor (TGF)- has a large variety of biological functions, including the modulation of inflammation and the immune system, and is presumed to play important roles in repairing wounds and reducing scarring. The objective of this study is to examine the effects of TGF-1 on healing wounds and reducing scarring. We have also analysed the ability of the hemagglutinating virus of Japan (HVJ) liposome mediated antisense oligodeoxynucleotides (ODNs) to specifically inhibit wound-induced expressions of TGF-1 proteins and mRNA in the rat skin. METHODS: Skin wounds were created on the backs of 80 anesthetized rats. The first group of wounds, as the controls, was unmanipulated. The second group of wounds, as positive controls or an excessive scarring model, was injected with TGF-1 subcutaneously. The third group of wounds was injected with anti-TGF-1 antibody subcutaneously. The fourth group of wounds was injected with HVJ liposome mediated antisense ODNs for TGF-1 subcutaneously. The wounds of all groups were bisected and analysed histologically 5, 10, 15, 30, and 50 days after the wounds were made. RESULTS: All control wounds (TGF-1 or no injection) healed with scarring, whereas the wounds treated with the antibody or antisense ODNs healed with less scar formation compared to the control group. The wounds treated with the antibody or antisense ODNs had fewer macrophages, less collagen and fibronectin contents than the other wounds. Northern blotting and in situ hybridization analysis showed that wound sites treated with HVJ liposome mediated antisense ODNs for TGF-1 exhibited decreased levels of TGF-1 mRNA after injury. CONCLUSIONS: These findings suggest an important new approach to controlling scarring in normal wound healing, complementing the practice of adding exogenous growth factors to chronic wounds in the attempt to inhibit collagen deposition.
Animals ; Blotting, Northern ; Cicatrix* ; Collagen ; Complement System Proteins ; Fibronectins ; Genetic Therapy* ; Immune System ; In Situ Hybridization ; Inflammation ; Intercellular Signaling Peptides and Proteins ; Liposomes ; Macrophages ; Oligodeoxyribonucleotides ; Oligoribonucleotides ; Rats ; RNA, Messenger ; Sendai virus ; Skin ; Transforming Growth Factor beta ; Transforming Growth Factors ; Wound Healing ; Wounds and Injuries

With the class of 2000, the College of Medicine at Korea University instituted a revised curriculum. The new revision combined the traditional, and discipline-oriented, curriculums into a newly integrated curriculum. The purpose of this study is to identify the problems of the newly introduced integrated lectures, and how to find ways to improve this curriculum. Overloaded lecture hours and content, insufficient functional integration between disciplines, unstructured handout, deficiency in reference material and lack of motivation were identified as problems for students. Most of the participants urged a more effective collaboration between the faculty members of individual disciplines. Basic and clinical disciplines must be integrated as thoroughly as possible to improve and stabilize the new curriculum. Also, overall lecture time should be diminished, thereby allowing students to actively pursue their own learning.
Cooperative Behavior ; Curriculum ; Humans ; Korea* ; Learning ; Lectures* ; Motivation

BACKGROUND: Preemptive analgesia may prevent nociceptive inputs generated during surgery from sensitizing central neurons and, therefore, may reduce post-operative pain. But, preemptive analgesia has been shown to decrease postinjury pain in animals, studies in human have provided controversial results. We studied whether intravenous morphine infusion before induction could affect post-operative pain and analgesic demands, when compared with intravenous morphine infusion after the closure of the peritoneum. METHODS: Female patients scheduled for total abdominal hysterectomy were randomly assigned to one of two groups of prospectively studied in a double-blind manner. Group I (n=23) and II (n=20) received intravenous morphine (0.1 mg/kg) before induction of anesthesia and after the closure of the peritoneum, respectively. Either group had continuous infusion of morphine (1.5 mg/hr) immediately after i.v. bolus morphine. Postoperative pain relief was provided with i.v. morphine from a PCA system (Medex Walkmed). Postoperative visual analogue pain scores (VAS), analgesics requirements and side effects were examined and compared between groups for 2 postoperative days. RESULTS: VAS were significantly less in group I (3.3+/-0.4) than in group II (5.3+/-0.5) 2hrs after surgery (p<0.01). Patient-cantrolled morphine cumulative consumption in group I was significantly less than in group II for 24hours (21.9 mg vs 35.3 mg) and 48hours (37.4 mg vs 55.0 mg) after operation (p<0.01). CONCLUSIONS: Preemptive analgesia with intravenous morphine reduces postoperative pain and analgesic requirements. Lower postoperative analgesic requirements in preemptive analgesic group indicate that intravenous morphine prevents development of injury-induced peripheral or central sensitization.
Analgesia* ; Analgesics ; Anesthesia ; Animals ; Central Nervous System Sensitization ; Female ; Humans ; Hysterectomy ; Morphine ; Neurons ; Pain, Postoperative ; Passive Cutaneous Anaphylaxis ; Peritoneum ; Prospective Studies

OBJECTIVE: The negative symptoms of schizophrenia usually are not responsive to drug therapy to persist and make schizophrenics more difficult in their rehabilitation. The authors investigated the therapeutic effect of token economy(TET) for negative symptoms of schizophrenic patients, and attempted to develop a TET program f3r psychiatric wards in general hospital. METHODS: Negative subscale of PANSS was rated for 35 schizophrenics with negative symptoms as their main problems before and after short-term TET(less than 3 months). Therapeutic factors were identified by comparing patient and program variables between the achieved and the non-achieved group of each level of target behaviors. RESULTS: 1) Subtotal of negative subscale of PANSS was decreased from 31.57+/-4.32 at baseline to 20.66+/-4.63 artier treatment. With TET, symptoms of difficulty in abstract thinking' and 'stereotypic thinking' were less responsive than the other 5 items of the scale Also the dose of antipsychotics prescribed was reduced to 291.21+/-287.74mg/day from 487.58+/-372.79mg/day. 2) The achievement rate of level I (self-help) was 75%, level II (ward-activity) 78%, and level III (social activity/occupation) 68%, resulting in average 74% for all target behaviors. 3) On level II, dose of antipsychotics was lower, and on level III, number of admission was lower and female sex was more frequent in achieving patient group than nonachieving group. The rate of achievement was higher in case of special flood, reception, and outing with family applied as a reinforcer on level I, and reception on level II . CONCLUSION: These results showed that TET was effective for schizophrenic patients with negative symptoms in psychiatric ward. Further investigations to refine the individual program of TET will be needed far enhancement of it s therapeutic efficacy and smart application of it.
Antipsychotic Agents ; Drug Therapy ; Female ; Hospitals, General ; Humans ; Rehabilitation ; Schizophrenia ; Token Economy*

Two cases of tension pneumocephalus follwing surgery are reported. Tension pneumocephalus appears to be another potential complication of the operation and should be considered whenever a patient fail to recover as expected following surgery. Peaking of frontal lobe, mountain appearance of frontal lobe, and air densities at the cisterns are characteristic findings of tension pneumocephalus. Its diagnosis and treatment are easy and simple.
Diagnosis ; Frontal Lobe ; Humans ; Pneumocephalus*

BACKGROUND: The shortage of donor organs is the main problem that needs to be solved in Korea as well as in other countries. To expand the donor pool, we retrospectively reviewed the brain-dead patients who expired without organ donation in the neurosurgical intensive care units (NICU) and evaluated the potential deceased donors (PDDs). METHODS: Between January 2008 and December 2008, PDDs who expired without organ donation in the NICU were recruited from 52 secondary or tertiary referral hospitals in Korea. The data of a total 2,288 PDD cases were collected from the questionnaire. Of these, 1,980 cases were eligible for analysis. RESULTS: There were 1,166 males (58.9%) and 793 females (40.1%) with a mean age of 57.6+/-18.0 years (21.2% in the 5th decade; 21.0% in the 6th decade). The most common cause of death of PDDs was cerebrovascular accident (n=1,034; 52.2%). Glasgow Coma scale was 3 in 23.1% and 4 in 12.1% of the PDDs. Craniotomy was performed in 996 patients (50.3%). Sepsis developed in 276 patients (14.0%) among the total PPDs. Diagnostic procedure for assessment of brain death was performed in 194 patients (9.8%). The seroprevalence of HBsAg and HCVAb was 1.7% and 0.6%, respectively. The mean AST/ALT level on admission and after brain death were 80.9+/-344.9/49.0+/-162.19 and 308.6+/-1,485.2/142.5+/-596.27 IU/L, respectively. Uriney protein level was normal in 1,221 patients (61.7%) after brain death. Of the 1980 PDDs, 19 patients (1%) donated their organs for transplantation. CONCLUSION: Only a small percentage (1%) of PDDs in the NICU donated their organs in Korea. We suggest that continuous and active donor action is needed to increase organ donation from the potential deceased donors.
Brain Death ; Cause of Death ; Craniotomy ; Critical Care ; Female ; Glasgow Coma Scale ; Hepatitis B Surface Antigens ; Humans ; Intensive Care Units ; Korea ; Male ; Neurosurgery ; Surveys and Questionnaires ; Retrospective Studies ; Sepsis ; Seroepidemiologic Studies ; Stroke ; Tertiary Care Centers ; Tissue and Organ Procurement ; Tissue Donors ; Tuberculin

BACKGROUND: Currently, the incidence of chronic pancreatitis is increasing due to the change of diet and high alcohol consumption in our country. Regarding more effective treatment of chronic pancreatitis, surgical intervention is favored for the control of intractable pain, various complications from the pancreatitis, suspected malignancy, and amelioration of progressively deterioratory exocrine and endocrine pancreas functions. We attempted to evaluate the various indications for an operation, various surgical treatments, and their results. METHODS: We retrospectively reviewed the clinical records of 50 patients with chronic pancreatitis who were managed surgically between July 1989 and Feb. 1998. RESULTS: The indications for operation were intractable pain in 25 cases, suspected malignancy in 12 cases, biliary obstruction in 4 cases, pancreatic pseudocyst in 7 cases, and treatment of Diabetes Mellitus in 2 cases. We performed 11 drainage procedures, 8 Peustow-Gillesby operations and 3, DuVal operations 2 combined denervations, 28 pancreatic resections 12 pancreaticoduodenectomies, duodenum-preserving resection of the pancreas head 12, distal pancreatectomies, 3 total pancreatectomies and a combined denervation, 9 bypass procedures and 2 pancreas transplantations in 2 cases. The follow-up period were from 1 month to 9 years and 7 months with a mean of 2 years and 11 months. The results were good in 23 cases (51 .1%), fair in 16 cases (35.6%) and poor (no change or aggravation) in 6 cases (13.3%). Postoperative mortality developed in 1 case due to postoperative aspiration pneumonia and sepsis after the bypass procedures. Late mortality occurred in 2 cases, one due to sepsis from uncontrolled DM and the other is rupture of the pseudoaneurysm of the anastomotic vessel after transplantation. CONCLUSIONS: Surgical procedures are the mainstays of definite treatment modality in chronic pancreatitis. Operations should be selected properly for each case. Pancreas or islet transplantation is another treatment option for the control of irreversible exocrine and endocrine pancreatic dysfunction.
Alcohol Drinking ; Aneurysm, False ; Denervation ; Diabetes Mellitus ; Diet ; Drainage ; Follow-Up Studies ; Head ; Humans ; Incidence ; Islets of Langerhans ; Islets of Langerhans Transplantation ; Mortality ; Pain, Intractable ; Pancreas ; Pancreas Transplantation ; Pancreatectomy ; Pancreatic Pseudocyst ; Pancreaticoduodenectomy ; Pancreatitis ; Pancreatitis, Chronic* ; Pneumonia, Aspiration ; Retrospective Studies ; Rupture ; Sepsis