BACKGROUND: Mounting evidence implicates an association between ambient air pollution and impaired reproductive potential of human. Our study aimed to assess the association between air pollution and ovarian reserve in young, infertile women. METHODS: Our study included 2276 Korean women who attended a single fertility center in 2016-2018. Women's exposure to air pollution was assessed using concentrations of particulate matter (PM RESULTS: The mean age was 36.6 ± 4.2 years and AMH level was 3.3 ± 3.1 ng/mL in the study population. Average AMH ratio was 0.8 ± 0.7 and low AMH was observed in 10.3% of women (n=235). The average concentration of six air pollutants was not different between the normal ovarian reserve and low AMH groups for all averaging periods. In multivariable models, an interquartile range (IQR)-increase in 1 month-average PM CONCLUSIONS In a cohort of infertile Korean women, there was a suggestive evidence of the negative association between ambient PM concentration and ovarian reserve, highlighting the potential adverse impact of air pollution on women's fertility.
Adult ; Air Pollutants/adverse effects* ; Air Pollution/adverse effects* ; Environmental Exposure/adverse effects* ; Female ; Humans ; Infertility, Female/etiology* ; Ovarian Reserve/physiology* ; Republic of Korea

OBJECTIVE: The aim of our study is to compare the overall survival (OS), progression-free survival (PFS), and treatment-related morbidities between primary concurrent chemoradiation therapy (CCRT) vs. radical hysterectomy (RH) with or without tailored adjuvant therapy in patients with stages IB2 and IIA cervical cancer. METHODS: This was a retrospective study of 113 patients with IB2 or IIA cervical cancer treated with either primary CCRT (n=49) or RH (n=64) with or without tailored adjuvant therapy between 2002 and 2011 at Keimyung University Dongsan Medical Center. Patients in RH group was divided into those undergoing surgery alone (n=26) and those undergoing surgery with adjuvant therapy (n=38). RESULTS: The median follow up period was 66 months. The 5-year OS by treatment modality was 88.7% for the 64 patients in the RH group and 72.8% for 49 patients in the CCRT group (P=0.044). The 5-year PFS was 82.3% and 65.6% after RH group and CCRT group (P=0.048), respectively. Grade 3–4 complication was less frequent after RH alone (7.7%) than RH with adjuvant therapy (34.2%) or CCRT group (28.6%) (P=0.047). CONCLUSION: The RH group seems to be superior to the CCRT group in oncologic outcomes. However, considering the selection bias including tumor size, lymph node meta, and parametrial invasion in pretreatment magnetic resonance imaging, both treatment modalities are reasonable and feasible in cervical cancer IB2 and IIA. It is important to choose the appropriate treatment modality considering the age and general condition of the patient. Randomized controlled study is needed to confirm the result of our study and determine the optimal treatment.
Chemoradiotherapy ; Disease-Free Survival ; Follow-Up Studies ; Humans ; Hysterectomy* ; Lymph Nodes ; Magnetic Resonance Imaging ; Retrospective Studies* ; Selection Bias ; Uterine Cervical Neoplasms*

BACKGROUND: In support of safe and appropriate utilization of blood products, the Korean Ministry of Health and Welfare and the Korean Society of Blood Transfusion developed transfusion guidelines in 2009. We evaluated the appropriateness of blood transfusions on the basis of these proposed guidelines. METHODS: We investigated the awareness of the 2009 proposed guidelines and the transfusion guidelines currently in use through a questionnaire administered to the physicians of a tertiary care hospital. We provided the 2009 proposed transfusion guidelines through summarized pop-ups for each blood product that appeared in the hospital information system whenever a physician ordered blood products, and promoted the guidelines by posting it on the bulletin board and the hospital information system for one month. Evaluation of the appropriateness of blood transfusion was conducted by reviewing the medical records of patients who were transfused within one month before and one month after the promotion. Further, we also examined the rates of blood wastage and return. RESULTS: Rates of appropriately transfused blood products changed from 29.4% to 33.1% for red blood cells, from 16.9% to 68.9% for platelets, and from 54.8% to 33.3% for fresh frozen plasma. The decreased appropriate transfusion rate of fresh frozen plasma might be due to the small number of transfusions performed during the short study period. The rates of blood wastage and return decreased from 1.77% to 1.21% and from 3.91% to 3.00%, respectively. CONCLUSIONS: Promotion of the new transfusion guidelines lowered the incidence of inappropriate transfusions. Continuous promotion and establishment of these guidelines after adjustments according to the status of each hospital are necessary.
Blood Platelets ; Blood Transfusion ; Erythrocytes ; Hospital Information Systems ; Humans ; Incidence ; Medical Records ; Plasma ; Surveys and Questionnaires ; Tertiary Healthcare

BACKGROUND: The detection of total anti-hepatitis A virus (anti-HAV) immunoglobulin (Ig) and IgM is important for diagnosing acute hepatitis A. Our laboratory introduced new commercial automated chemiluminescence immunoassays (CLIAs) for use in addition to pre-existing automated CLIA. We evaluated the rate of agreement in the detection of total anti-HAV Ig and IgM in serum samples between two automated CLIAs. METHODS: We analyzed 181 samples those were submitted for testing at Kangbuk Samsung Medical Center. We analyzed the rate of agreement between the ADVIA Centaur XP (Siemens, Germany) and the MODULAR ANALYTICS E170 (Roche, Switzerland) analyzers. We performed reverse transcription (RT)-PCR when there was a discrepancy between the results from the two analyzers. RESULTS: The agreement rates between the ADVIA Centaur XP and the MODULAR ANALYTICS E170 for total anti-HAV Ig and IgM were 97.2% and 98.9%, respectively. Discrepant results were obtained in seven cases; all were found to be HAV-negative based on RT-PCR analysis. CONCLUSIONS: The total anti-HAV Ig and IgM results obtained using the two automated analyzers were comparable. However, in cases of equivocal results tested by the ADVIA Centaur XP for anti-HAV IgM, retesting and follow-up testing of samples are recommended.
Hepatitis A ; Hepatitis A Antibodies ; Hepatitis A virus ; Immunoassay ; Immunoglobulin M ; Immunoglobulins ; Luminescence ; Reverse Transcription ; Viruses