1.The impact of the laboratory quality management program on colorectal cancer screening using immunochemical fecal occult blood tests in Korea
Hye Ryun LEE ; Sollip KIM ; Hyeongsu KIM ; Yeo-Min YUN ; Ho Jin JEONG ; Minje HAN ; Myeong Hee KIM ; Tae-Hyun UM ; You Kyoung LEE ; Byung Ryul JEON ; Kunsei LEE ; Sail CHUN
Journal of the Korean Medical Association 2025;68(5):338-347
Purpose:
Immunochemical fecal occult blood tests (iFOBT) have been utilized as the primary method for colorectal cancer screening within Korea's National Cancer Screening Program. This study aimed to evaluate the impact of the accreditation program for clinical laboratories and external quality assessment (EQA) programs on colorectal cancer screening.
Methods:
We analyzed the false-positive rates of iFOBT in colorectal cancer screening from 2016 to 2020 according to participation and performance in the Outstanding Laboratory Accreditation Program (OLAP) conducted by the Laboratory Medicine Foundation, and the External Quality Assessment programs run by the Korean Association of External Quality Assessment Service.
Results:
False-positive rates of iFOBT were lower among institutions accredited by OLAP (2.35%) compared with non-accredited (3.04%) and non-participating institutions (5.60%). Similarly, institutions participating in the EQA program exhibited lower false-positive rates (3.79%) compared to non-participants (7.04%). Within the iFOBT-specific EQA program, institutions that passed demonstrated the lowest false-positive rate (3.37%), while failing institutions showed the highest rate (9.07%), surpassing even non-participating institutions (6.44%).
Conclusion
Participation in quality management programs such as OLAP and EQA was associated with lower false-positive rates in iFOBT for colorectal cancer screening. These findings suggest that quality management initiatives can increase the accuracy of iFOBT, potentially improving the effectiveness of colorectal cancer screening programs, and reducing unnecessary follow-up procedures and associated healthcare costs.
2.The impact of the laboratory quality management program on colorectal cancer screening using immunochemical fecal occult blood tests in Korea
Hye Ryun LEE ; Sollip KIM ; Hyeongsu KIM ; Yeo-Min YUN ; Ho Jin JEONG ; Minje HAN ; Myeong Hee KIM ; Tae-Hyun UM ; You Kyoung LEE ; Byung Ryul JEON ; Kunsei LEE ; Sail CHUN
Journal of the Korean Medical Association 2025;68(5):338-347
Purpose:
Immunochemical fecal occult blood tests (iFOBT) have been utilized as the primary method for colorectal cancer screening within Korea's National Cancer Screening Program. This study aimed to evaluate the impact of the accreditation program for clinical laboratories and external quality assessment (EQA) programs on colorectal cancer screening.
Methods:
We analyzed the false-positive rates of iFOBT in colorectal cancer screening from 2016 to 2020 according to participation and performance in the Outstanding Laboratory Accreditation Program (OLAP) conducted by the Laboratory Medicine Foundation, and the External Quality Assessment programs run by the Korean Association of External Quality Assessment Service.
Results:
False-positive rates of iFOBT were lower among institutions accredited by OLAP (2.35%) compared with non-accredited (3.04%) and non-participating institutions (5.60%). Similarly, institutions participating in the EQA program exhibited lower false-positive rates (3.79%) compared to non-participants (7.04%). Within the iFOBT-specific EQA program, institutions that passed demonstrated the lowest false-positive rate (3.37%), while failing institutions showed the highest rate (9.07%), surpassing even non-participating institutions (6.44%).
Conclusion
Participation in quality management programs such as OLAP and EQA was associated with lower false-positive rates in iFOBT for colorectal cancer screening. These findings suggest that quality management initiatives can increase the accuracy of iFOBT, potentially improving the effectiveness of colorectal cancer screening programs, and reducing unnecessary follow-up procedures and associated healthcare costs.
3.The impact of the laboratory quality management program on colorectal cancer screening using immunochemical fecal occult blood tests in Korea
Hye Ryun LEE ; Sollip KIM ; Hyeongsu KIM ; Yeo-Min YUN ; Ho Jin JEONG ; Minje HAN ; Myeong Hee KIM ; Tae-Hyun UM ; You Kyoung LEE ; Byung Ryul JEON ; Kunsei LEE ; Sail CHUN
Journal of the Korean Medical Association 2025;68(5):338-347
Purpose:
Immunochemical fecal occult blood tests (iFOBT) have been utilized as the primary method for colorectal cancer screening within Korea's National Cancer Screening Program. This study aimed to evaluate the impact of the accreditation program for clinical laboratories and external quality assessment (EQA) programs on colorectal cancer screening.
Methods:
We analyzed the false-positive rates of iFOBT in colorectal cancer screening from 2016 to 2020 according to participation and performance in the Outstanding Laboratory Accreditation Program (OLAP) conducted by the Laboratory Medicine Foundation, and the External Quality Assessment programs run by the Korean Association of External Quality Assessment Service.
Results:
False-positive rates of iFOBT were lower among institutions accredited by OLAP (2.35%) compared with non-accredited (3.04%) and non-participating institutions (5.60%). Similarly, institutions participating in the EQA program exhibited lower false-positive rates (3.79%) compared to non-participants (7.04%). Within the iFOBT-specific EQA program, institutions that passed demonstrated the lowest false-positive rate (3.37%), while failing institutions showed the highest rate (9.07%), surpassing even non-participating institutions (6.44%).
Conclusion
Participation in quality management programs such as OLAP and EQA was associated with lower false-positive rates in iFOBT for colorectal cancer screening. These findings suggest that quality management initiatives can increase the accuracy of iFOBT, potentially improving the effectiveness of colorectal cancer screening programs, and reducing unnecessary follow-up procedures and associated healthcare costs.
4.2021 Clinical Practice Guidelines for Diabetes Mellitus in Korea
Kyu Yeon HUR ; Min Kyong MOON ; Jong Suk PARK ; Soo-Kyung KIM ; Seung-Hwan LEE ; Jae-Seung YUN ; Jong Ha BAEK ; Junghyun NOH ; Byung-Wan LEE ; Tae Jung OH ; Suk CHON ; Ye Seul YANG ; Jang Won SON ; Jong Han CHOI ; Kee Ho SONG ; Nam Hoon KIM ; Sang Yong KIM ; Jin Wha KIM ; Sang Youl RHEE ; You-Bin LEE ; Sang-Man JIN ; Jae Hyeon KIM ; Chong Hwa KIM ; Dae Jung KIM ; SungWan CHUN ; Eun-Jung RHEE ; Hyun Min KIM ; Hyun Jung KIM ; Donghyun JEE ; Jae Hyun KIM ; Won Seok CHOI ; Eun-Young LEE ; Kun-Ho YOON ; Seung-Hyun KO ;
Diabetes & Metabolism Journal 2021;45(4):461-481
The Committee of Clinical Practice Guidelines of the Korean Diabetes Association (KDA) updated the previous clinical practice guidelines for Korean adults with diabetes and prediabetes and published the seventh edition in May 2021. We performed a comprehensive systematic review of recent clinical trials and evidence that could be applicable in real-world practice and suitable for the Korean population. The guideline is provided for all healthcare providers including physicians, diabetes experts, and certified diabetes educators across the country who manage patients with diabetes or the individuals at the risk of developing diabetes mellitus. The recommendations for screening diabetes and glucose-lowering agents have been revised and updated. New sections for continuous glucose monitoring, insulin pump use, and non-alcoholic fatty liver disease in patients with diabetes mellitus have been added. The KDA recommends active vaccination for coronavirus disease 2019 in patients with diabetes during the pandemic. An abridgement that contains practical information for patient education and systematic management in the clinic was published separately.
5.2021 Clinical Practice Guidelines for Diabetes Mellitus in Korea
Kyu Yeon HUR ; Min Kyong MOON ; Jong Suk PARK ; Soo-Kyung KIM ; Seung-Hwan LEE ; Jae-Seung YUN ; Jong Ha BAEK ; Junghyun NOH ; Byung-Wan LEE ; Tae Jung OH ; Suk CHON ; Ye Seul YANG ; Jang Won SON ; Jong Han CHOI ; Kee Ho SONG ; Nam Hoon KIM ; Sang Yong KIM ; Jin Wha KIM ; Sang Youl RHEE ; You-Bin LEE ; Sang-Man JIN ; Jae Hyeon KIM ; Chong Hwa KIM ; Dae Jung KIM ; SungWan CHUN ; Eun-Jung RHEE ; Hyun Min KIM ; Hyun Jung KIM ; Donghyun JEE ; Jae Hyun KIM ; Won Seok CHOI ; Eun-Young LEE ; Kun-Ho YOON ; Seung-Hyun KO ;
Diabetes & Metabolism Journal 2021;45(4):461-481
The Committee of Clinical Practice Guidelines of the Korean Diabetes Association (KDA) updated the previous clinical practice guidelines for Korean adults with diabetes and prediabetes and published the seventh edition in May 2021. We performed a comprehensive systematic review of recent clinical trials and evidence that could be applicable in real-world practice and suitable for the Korean population. The guideline is provided for all healthcare providers including physicians, diabetes experts, and certified diabetes educators across the country who manage patients with diabetes or the individuals at the risk of developing diabetes mellitus. The recommendations for screening diabetes and glucose-lowering agents have been revised and updated. New sections for continuous glucose monitoring, insulin pump use, and non-alcoholic fatty liver disease in patients with diabetes mellitus have been added. The KDA recommends active vaccination for coronavirus disease 2019 in patients with diabetes during the pandemic. An abridgement that contains practical information for patient education and systematic management in the clinic was published separately.
6.Outcome and status of postcardiac arrest care in Korea: results from the Korean Hypothermia Network prospective registry
Soo Hyun KIM ; Kyu Nam PARK ; Chun Song YOUN ; Minjung Kathy CHAE ; Won Young KIM ; Byung Kook LEE ; Dong Hoon LEE ; Tae Chang JANG ; Jae Hoon LEE ; Yoon Hee CHOI ; Je Sung YOU ; In Soo CHO ; Su Jin KIM ; Jong-Seok LEE ; Yong Hwan KIM ; Min Seob SIM ; Jonghwan SHIN ; Yoo Seok PARK ; Young Hwan LEE ; HyungJun MOON ; Won Jung JEONG ; Joo Suk OH ; Seung Pill CHOI ; Kyoung-Chul CHA ;
Clinical and Experimental Emergency Medicine 2020;7(4):250-258
Objective:
High-quality intensive care, including targeted temperature management (TTM) for patients with postcardiac arrest syndrome, is a key element for improving outcomes after out-of-hospital cardiac arrest (OHCA). We aimed to assess the status of postcardiac arrest syndrome care, including TTM and 6-month survival with neurologically favorable outcomes, after adult OHCA patients were treated with TTM, using data from the Korean Hypothermia Network prospective registry.
Methods:
We used the Korean Hypothermia Network prospective registry, a web-based multicenter registry that includes data from 22 participating hospitals throughout the Republic of Korea. Adult comatose OHCA survivors treated with TTM between October 2015 and December 2018 were included. The primary outcome was neurological outcome at 6 months.
Results:
Of the 1,354 registered OHCA survivors treated with TTM, 550 (40.6%) survived 6 months, and 413 (30.5%) had good neurological outcomes. We identified 839 (62.0%) patients with preClinsumed cardiac etiology. A total of 937 (69.2%) collapses were witnessed, shockable rhythms were demonstrated in 482 (35.6%) patients, and 421 (31.1%) patients arrived at the emergency department with prehospital return of spontaneous circulation. The most common target temperature was 33°C, and the most common target duration was 24 hours.
Conclusion
The survival and good neurologic outcome rates of this prospective registry show great improvements compared with those of an earlier registry. While the optimal target temperature and duration are still unknown, the most common target temperature was 33°C, and the most common target duration was 24 hours.
7.Clinical Outcomes of COVID-19 Patients with Type 2 Diabetes: A Population-Based Study in Korea
Ji Hong YOU ; Sang Ah LEE ; Sung-Youn CHUN ; Sun Ok SONG ; Byung-Wan LEE ; Dae Jung KIM ; Edward J. BOYKO
Endocrinology and Metabolism 2020;35(4):901-908
Background:
The aim of this study was to evaluate clinical outcomes in coronavirus disease 2019 (COVID-19) positive patients with type 2 diabetes compared to those without diabetes in Korea.
Methods:
We extracted claims data for patients diagnosed with COVID-19 from the National Health Insurance Service database in Korea from January 20, 2020 to March 31, 2020. We followed up this cohort until death from COVID-19 or discharge from hospital.
Results:
A total of 5,473 patients diagnosed with COVID-19 were analyzed, including 495 with type 2 diabetes and 4,978 without diabetes. Patients with type 2 diabetes were more likely to be treated in the intensive care unit (ICU) (P<0.0001). The incidence of inhospital mortality was higher in patients with type 2 diabetes (P<0.0001). After adjustment for age, sex, insurance status, and comorbidities, odds of ICU admission (adjusted odds ratio [OR], 1.59; 95% confidence interval [CI], 1.02 to 2.49; P=0.0416) and in-hospital mortality (adjusted OR, 1.90; 95% CI, 1.13 to 3.21; P=0.0161) among patients with COVID-19 infection were significantly higher in those with type 2 diabetes. However, there was no significant difference between patients with and without type 2 diabetes in ventilator, oxygen therapy, antibiotics, antiviral drugs, antipyretics, and the incidence of pneumonia after adjustment.
Conclusion
COVID-19 positive patients with type 2 diabetes had poorer clinical outcomes with higher risk of ICU admission and in-hospital mortality than those without diabetes. Therefore, medical providers need to consider this more serious clinical course when planning and delivering care to type 2 diabetes patients with COVID-19 infection.
8.Posterior Sublaminar Wiring and/or Transarticular Screw Fixation for Reducible Atlantoaxial Instability Secondary to Symptomatic Os Odontoideum: A Neglected Technique?
Han CHANG ; Jong Beom PARK ; Byung Wan CHOI ; Jong Won KANG ; You Seung CHUN
Asian Spine Journal 2019;13(2):233-241
STUDY DESIGN: Retrospective case analysis. PURPOSE: We retrospectively evaluated the clinical and radiological outcomes of posterior sublaminar wiring (PSLW) and/or transarticular screw fixation (TASF) for reducible atlantoaxial instability (AAI) secondary to os odontoideum. OVERVIEW OF LITERATURE: Limited information is available about the surgical outcomes of symptomatic os odontoideum with AAI. METHODS: We examined 23 patients (12 women and 11 men) with os odontoideum and reducible AAI. The average age of the patients at the time of the operation was 44.2 years. The average follow-up duration was 4.5 years. Thirteen patients with anterior AAI underwent PSLW alone, while 10 patients with combined (anterior+posterior) AAI underwent PSLW and TASF. An autogenous iliac bone graft was used for all patients. Nine patients complained of neck or suboccipital pain, and 14 complained of myelopathy. RESULTS: Angulational instability (preoperative 18.7°±8.9° vs. postoperative 2.1°±4.6°, p<0.001), translational instability (16.3±4.9 mm vs. 1.8±2.2 mm, p<0.001), and segmental angle of the C1–C2 joint (23.7°±7.2° vs. 28.4°±3.8°, p<0.05) showed significant improvement postoperatively. Neck Visual Analog Scale score (6.2±2.4 vs. 2.5±1.8, p<0.05) and the modified Japanese Orthopedic Association (9.1±3.1 vs. 13.2±2.6, p<0.05) score also improved, with a recovery rate of 51.8%. Among the three patients who developed nonunion and/or wire breakage, one underwent revision surgery with repeat PSLW and was finally able to achieve fusion. The final fusion rate was 91.3%. CONCLUSIONS: PSLW and/or TASF provided satisfactory clinical and radiological outcomes in reducible AAI secondary to os odontoideum without significant neurological complications. Our results suggest that PSLW and/or TASF can be considered a viable surgical option over segmental fixation in highly selected cases of os odontoideum with reducible AAI.
Asian Continental Ancestry Group
;
Female
;
Follow-Up Studies
;
Humans
;
Joints
;
Neck
;
Orthopedics
;
Retrospective Studies
;
Spinal Cord Diseases
;
Transplants
;
Visual Analog Scale
9.Blood Management Protocol without Transfusion in Orthopedic Surgery
You Sung SUH ; Jeong Jae LEE ; Jae Hwi NHO ; Haran CHUNG ; Won Seok LEE ; Byung Woong JANG ; Yong Beom KIM ; Dong Il CHUN ; Sung Woo CHOI ; Jae Chul LEE ; Hyung Suk CHOI
Korean Journal of Blood Transfusion 2019;30(1):15-22
We developed a new blood management protocol that allows patients to not undergo transfusion during major orthopaedic surgery. Here, we report the safety of or our protocol. The preoperative pharmacological protocol consisted of the administration of 40 µg of recombinant erythropoietin subcutaneously and 100 mg of iron supplements intravenously. During the operation, reinfusion of drainage blood using a cell saver and plasma expander was used. The cell saver device passed the collected blood through a filter, which washed the blood, removing the hemolyzed cells and other impurities. Intravenous tranexamic acid 1 g is given just before the operation, except high-risk patients for venous thromboembolism. Postoperatively, recombinant erythropoietin and iron supplements were administered in the same manner with the preoperative protocol and continued until a hemoglobin level reached 10 g/dL.
Drainage
;
Erythropoietin
;
Humans
;
Iron
;
Orthopedics
;
Plasma
;
Tranexamic Acid
;
Venous Thromboembolism
10.Shoulder Disease Patterns of the Wheelchair Athletes of Table-Tennis and Archery: A Pilot Study.
Byung chun YOU ; Won Jae LEE ; Seung Hwa LEE ; Sol JANG ; Hyun Seok LEE
Annals of Rehabilitation Medicine 2016;40(4):702-709
OBJECTIVE: To investigate the shoulder disease patterns for the table-tennis (TT) and archery (AR) wheelchair athletes via ultrasonographic evaluations. METHODS: A total of 35 wheelchair athletes were enrolled, made up of groups of TT (n=19) and AR (n=16) athletes. They were all paraplegic patients and were investigated for their wheelchair usage duration, careers as sports players, weekly training times, the Wheelchair User's Shoulder Pain Index (WUSPI) scores and ultrasonographic evaluation. Shoulders were divided into playing arm of TT, non-playing arm of TT, bow-arm of AR, and draw arm of AR athletes. Shoulder diseases were classified into five entities of subscapularis tendinopathy, supraspinatus tendinopathy, infraspinatus tendinopathy, biceps long head tendinopathy, and subacromial-subdeltoid bursitis. The pattern of shoulder diseases were compared between the two groups using the Mann-Whitney and the chi-square tests RESULTS: WSUPI did not significantly correlate with age, wheelchair usage duration, career as players or weekly training times for all the wheelchair athletes. For the non-playing arm of TT athletes, there was a high percentage of subscapularis (45.5%) and supraspinatus (40.9%) tendinopathy. The percentage of subacromial-subdeltoid bursitis showed a tendency to be present in the playing arm of TT athletes (20.0%) compared with their non-playing arm (4.5%), even though this was not statistically significant. Biceps long head tendinopathy was the most common disease of the shoulder in the draw arm of AR athletes, and the difference was significant when compared to the non-playing arm of TT athletes (p<0.05). CONCLUSION: There was a high percentage of subscapularis and supraspinatus tendinopathy cases for the non-playing arm of TT wheelchair athletes, and a high percentage of biceps long head tendinopathy for the draw arm for the AR wheelchair athletes. Consideration of the biomechanical properties of each sport may be needed to tailor specific training for wheelchair athletes.
Arm
;
Athletes*
;
Bursitis
;
Head
;
Humans
;
Pilot Projects*
;
Shoulder Pain
;
Shoulder*
;
Sports
;
Tendinopathy
;
Ultrasonography
;
Wheelchairs*

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