1.Measuring Medical Waste from Gastrointestinal Endoscopies in South Korea to Estimate Their Carbon Footprint
Da Hyun JUNG ; Hyun Jung LEE ; Tae Joo JEON ; Young Sin CHO ; Bo Ra KANG ; Nae Sun YOUN ; Jae Myung CHA
Gut and Liver 2025;19(1):43-49
Background/Aims:
Although gastrointestinal endoscopy (GIE) is a major contributor to the carbon footprint of national healthcare, the amount of medical waste generated by GIE procedures is not reported in South Korea. This study aimed to measure the amount of medical waste generated from GIE procedures in South Korea.
Methods:
We conducted a 5-day audit of medical waste generated during GIEs at seven hospitals. During the study period, medical waste in the endoscopy examination rooms was measured twice daily and documented as mass (kg). To calculate the mean mass of disposable waste generated during one esophagogastroduodenoscopy (EGD) and one colonoscopy, the mean mass of medical waste generated from seven examinations was calculated. The mean mass of medical waste generated during GIEs was calculated by dividing the total mass of medical waste generated by the number of GIE procedures.
Results:
Overall, 3,922 endoscopies were performed and 4,558 kg of waste was generated. The mean weight of medical waste generated per endoscopy was 1.34 kg. Each EGD and colonoscopy generated a mean of 0.24 kg and 0.43 kg of disposable waste, respectively. Applying the mean waste estimates from this study to annual GIE procedures performed in South Korea in 2022 showed that the total medical waste produced from GIE was 13,704,453 kg. In addition, the total masses of medical waste produced during EGD and colonoscopy procedures were 819,766 kg and 2,889,478 kg, respectively.
Conclusions
Our quantitative measurement showed that a large amount of medical waste is generated from GIE procedures. However, further research is warranted to reduce medical waste generated during GIE, which is an urgent unmet need.
2.Measuring Medical Waste from Gastrointestinal Endoscopies in South Korea to Estimate Their Carbon Footprint
Da Hyun JUNG ; Hyun Jung LEE ; Tae Joo JEON ; Young Sin CHO ; Bo Ra KANG ; Nae Sun YOUN ; Jae Myung CHA
Gut and Liver 2025;19(1):43-49
Background/Aims:
Although gastrointestinal endoscopy (GIE) is a major contributor to the carbon footprint of national healthcare, the amount of medical waste generated by GIE procedures is not reported in South Korea. This study aimed to measure the amount of medical waste generated from GIE procedures in South Korea.
Methods:
We conducted a 5-day audit of medical waste generated during GIEs at seven hospitals. During the study period, medical waste in the endoscopy examination rooms was measured twice daily and documented as mass (kg). To calculate the mean mass of disposable waste generated during one esophagogastroduodenoscopy (EGD) and one colonoscopy, the mean mass of medical waste generated from seven examinations was calculated. The mean mass of medical waste generated during GIEs was calculated by dividing the total mass of medical waste generated by the number of GIE procedures.
Results:
Overall, 3,922 endoscopies were performed and 4,558 kg of waste was generated. The mean weight of medical waste generated per endoscopy was 1.34 kg. Each EGD and colonoscopy generated a mean of 0.24 kg and 0.43 kg of disposable waste, respectively. Applying the mean waste estimates from this study to annual GIE procedures performed in South Korea in 2022 showed that the total medical waste produced from GIE was 13,704,453 kg. In addition, the total masses of medical waste produced during EGD and colonoscopy procedures were 819,766 kg and 2,889,478 kg, respectively.
Conclusions
Our quantitative measurement showed that a large amount of medical waste is generated from GIE procedures. However, further research is warranted to reduce medical waste generated during GIE, which is an urgent unmet need.
3.Measuring Medical Waste from Gastrointestinal Endoscopies in South Korea to Estimate Their Carbon Footprint
Da Hyun JUNG ; Hyun Jung LEE ; Tae Joo JEON ; Young Sin CHO ; Bo Ra KANG ; Nae Sun YOUN ; Jae Myung CHA
Gut and Liver 2025;19(1):43-49
Background/Aims:
Although gastrointestinal endoscopy (GIE) is a major contributor to the carbon footprint of national healthcare, the amount of medical waste generated by GIE procedures is not reported in South Korea. This study aimed to measure the amount of medical waste generated from GIE procedures in South Korea.
Methods:
We conducted a 5-day audit of medical waste generated during GIEs at seven hospitals. During the study period, medical waste in the endoscopy examination rooms was measured twice daily and documented as mass (kg). To calculate the mean mass of disposable waste generated during one esophagogastroduodenoscopy (EGD) and one colonoscopy, the mean mass of medical waste generated from seven examinations was calculated. The mean mass of medical waste generated during GIEs was calculated by dividing the total mass of medical waste generated by the number of GIE procedures.
Results:
Overall, 3,922 endoscopies were performed and 4,558 kg of waste was generated. The mean weight of medical waste generated per endoscopy was 1.34 kg. Each EGD and colonoscopy generated a mean of 0.24 kg and 0.43 kg of disposable waste, respectively. Applying the mean waste estimates from this study to annual GIE procedures performed in South Korea in 2022 showed that the total medical waste produced from GIE was 13,704,453 kg. In addition, the total masses of medical waste produced during EGD and colonoscopy procedures were 819,766 kg and 2,889,478 kg, respectively.
Conclusions
Our quantitative measurement showed that a large amount of medical waste is generated from GIE procedures. However, further research is warranted to reduce medical waste generated during GIE, which is an urgent unmet need.
4.Measuring Medical Waste from Gastrointestinal Endoscopies in South Korea to Estimate Their Carbon Footprint
Da Hyun JUNG ; Hyun Jung LEE ; Tae Joo JEON ; Young Sin CHO ; Bo Ra KANG ; Nae Sun YOUN ; Jae Myung CHA
Gut and Liver 2025;19(1):43-49
Background/Aims:
Although gastrointestinal endoscopy (GIE) is a major contributor to the carbon footprint of national healthcare, the amount of medical waste generated by GIE procedures is not reported in South Korea. This study aimed to measure the amount of medical waste generated from GIE procedures in South Korea.
Methods:
We conducted a 5-day audit of medical waste generated during GIEs at seven hospitals. During the study period, medical waste in the endoscopy examination rooms was measured twice daily and documented as mass (kg). To calculate the mean mass of disposable waste generated during one esophagogastroduodenoscopy (EGD) and one colonoscopy, the mean mass of medical waste generated from seven examinations was calculated. The mean mass of medical waste generated during GIEs was calculated by dividing the total mass of medical waste generated by the number of GIE procedures.
Results:
Overall, 3,922 endoscopies were performed and 4,558 kg of waste was generated. The mean weight of medical waste generated per endoscopy was 1.34 kg. Each EGD and colonoscopy generated a mean of 0.24 kg and 0.43 kg of disposable waste, respectively. Applying the mean waste estimates from this study to annual GIE procedures performed in South Korea in 2022 showed that the total medical waste produced from GIE was 13,704,453 kg. In addition, the total masses of medical waste produced during EGD and colonoscopy procedures were 819,766 kg and 2,889,478 kg, respectively.
Conclusions
Our quantitative measurement showed that a large amount of medical waste is generated from GIE procedures. However, further research is warranted to reduce medical waste generated during GIE, which is an urgent unmet need.
5.Prognostic Value of Alpha-Fetoprotein in Patients Who Achieve a Complete Response to Transarterial Chemoembolization for Hepatocellular Carcinoma
Jae Seung LEE ; Young Eun CHON ; Beom Kyung KIM ; Jun Yong PARK ; Do Young KIM ; Sang Hoon AHN ; Kwang-Hyub HAN ; Wonseok KANG ; Moon Seok CHOI ; Geum-Youn GWAK ; Yong-Han PAIK ; Joon Hyeok LEE ; Kwang Cheol KOH ; Seung Woon PAIK ; Hwi Young KIM ; Tae Hun KIM ; Kwon YOO ; Yeonjung HA ; Mi Na KIM ; Joo Ho LEE ; Seong Gyu HWANG ; Soon Sun KIM ; Hyo Jung CHO ; Jae Youn CHEONG ; Sung Won CHO ; Seung Ha PARK ; Nae-Yun HEO ; Young Mi HONG ; Ki Tae YOON ; Mong CHO ; Jung Gil PARK ; Min Kyu KANG ; Soo Young PARK ; Young Oh KWEON ; Won Young TAK ; Se Young JANG ; Dong Hyun SINN ; Seung Up KIM ;
Yonsei Medical Journal 2021;62(1):12-20
Purpose:
Alpha-fetoprotein (AFP) is a prognostic marker for hepatocellular carcinoma (HCC). We investigated the prognostic value of AFP levels in patients who achieved complete response (CR) to transarterial chemoembolization (TACE) for HCC.
Materials and Methods:
Between 2005 and 2018, 890 patients with HCC who achieved a CR to TACE were recruited. An AFP responder was defined as a patient who showed elevated levels of AFP (>10 ng/mL) during TACE, but showed normalization or a >50% reduction in AFP levels after achieving a CR.
Results:
Among the recruited patients, 569 (63.9%) with naïve HCC and 321 (36.1%) with recurrent HCC after complete resection were treated. Before TACE, 305 (34.3%) patients had multiple tumors, 219 (24.6%) had a maximal tumor size >3 cm, and 22 (2.5%) had portal vein tumor thrombosis. The median AFP level after achieving a CR was 6.36 ng/mL. After a CR, 473 (53.1%) patients experienced recurrence, and 417 (46.9%) died [median progression-free survival (PFS) and overall survival (OS) of 16.3 and 62.8 months, respectively]. High AFP levels at CR (>20 ng/mL) were independently associated with a shorter PFS [hazard ratio (HR)=1.403] and OS (HR=1.284), together with tumor multiplicity at TACE (HR=1.518 and 1.666, respectively). AFP non-responders at CR (76.2%, n=359 of 471) showed a shorter PFS (median 10.5 months vs. 15.5 months, HR=1.375) and OS (median 41.4 months vs. 61.8 months, HR=1.424) than AFP responders (all p=0.001).
Conclusion
High AFP levels and AFP non-responders were independently associated with poor outcomes after TACE. AFP holds clinical implications for detailed risk stratification upon achieving a CR after TACE.
6.Multicenter Study on the Clinician's Diagnostic and Therapeutic Approaches for Benign Paroxysmal Positional Vertigo in Korea
Eun Ju JEON ; Won Ho CHUNG ; Jeong Hwan CHOI ; Eui Cheol NAM ; Hong Ju PARK ; Jong Dae LEE ; Won Sang LEE ; Kyu Sung KIM ; Eui Kyung GOH ; Ja Won KOO ; Min Bum KIM ; Min Beom KIM ; Se Hyung KIM ; Young Jin KIM ; Chang Hee KIM ; Sung Il NAM ; Seog Kyun MUN ; Ga Young PARK ; Sang Yoo PARK ; Shi Nae PARK ; Chang Hoon BAE ; Sung Hyun BOO ; Myung Whan SUH ; Jae Hyun SEO ; Eun Jin SON ; Jae Jun SONG ; Jae Jin SONG ; Joong Wook SHIN ; Dae Bo SHIM ; Seong Ki AHN ; Hye Youn YOUM ; Shin Young YOO ; Dong Hee LEE ; Seung Hwan LEE ; Chang Ho LEE ; Hyun Seok LEE ; Hwan Ho LEE ; Hyo Jeong LEE ; Yun Hoon CHOUNG ; Seung Hyo CHOI ; Jee Sun CHOI ; Seok Min HONG ; Sung Kwang HONG
Journal of the Korean Balance Society 2013;12(3):79-92
BACKGROUND AND OBJECTIVES: It is necessary to establish the most efficient diagnostic and therapeutic method for benign paroxysmal positional vertigo (BPPV), which is appropriate for Korean healthcare system. We aimed to evaluate current state of Korean clinician's diagnostic and therapeutic approaches for BPPV. MATERIALS AND METHODS: A 16-item survey was emailed to the members of dizziness department of Otology Research Interest Group in the Korean Otologic Society (n=68). 43 were returned and analyzed. RESULTS: All respondents (100%) used Dix-Hallpike test as a diagnostic tool for vertical canal-BPPV. Supine roll test was used for diagnosing lateral canal BPPV in nearly all the respondents (97.7%). Epley maneuver was chosen as otolith repositioning maneuver (ORM) for posterior canal BPPV in all respondents and barbecue rotation (BBQ) was used for treating lateral canal BPPV with geotropic nystagmus in 95.3% of respondents. Extreme variation was noted for therapeutic approach of lateral canal BPPV with ageotropic nystagmus BBQ, with 4 kinds of ORM and adjunctive measures to liberate otolith from cupula, while BBQ was again the most commonly used ORM (76.7%). CONCLUSION: The development of practical and efficient ORM for lateral canal BPPV with ageotropic nystagmus is necessary.
Surveys and Questionnaires
;
Delivery of Health Care
;
Dizziness
;
Electronic Mail
;
Korea
;
Otolaryngology
;
Otolithic Membrane
;
Public Opinion
;
Vertigo
7.Effects of tissue-cultured mountain ginseng (Panax ginseng CA Meyer) extract on male patients with erectile dysfunction.
Tae-Hwan KIM ; Seung Hyun JEON ; Eun-Joo HAHN ; Kee-Yoeup PAEK ; Jong Kwan PARK ; Nae Young YOUN ; Hyung-Lae LEE
Asian Journal of Andrology 2009;11(3):356-361
Korean ginseng and mountain ginseng (Panax ginseng CA Meyer) are important traditional herbal plants whose ginsenosides are generally accepted as serving to improve sexual functions, such as penile erection. We investigated the effects of tissue-cultured mountain ginseng extract (TMGE) on male patients with erectile dysfunction (ED). A double-blind, placebo-controlled study was conducted with 143 patients experiencing ED. Over the course of 8 weeks, one group took 1 000 mg of TMGE twice a day, and the other group took 1,000 mg of placebo twice a day. The effects of the TMGE and the placebo were analyzed using the Korean version of the International Index of Erectile Function (IIEF) questionnaire. A total of 86 patients completed 8 weeks of treatment. The scores on the five domains of the IIEF after medication were significantly higher than the baseline scores in the group treated with TMGE (P<0.05), whereas no significant improvement was observed in the placebo group (P>0.05). Erectile function and overall satisfaction scores after medication were significantly higher in the TMGE group than in the placebo group (P<0.05). Erectile function of patients in the TMGE-treated group significantly improved, suggesting that TMGE could be utilized for improving erectile function in male patients.
Adult
;
Aged
;
Bioreactors
;
Erectile Dysfunction
;
drug therapy
;
Humans
;
Male
;
Middle Aged
;
Panax
;
growth & development
;
Patient Dropouts
;
Patient Satisfaction
;
Phytotherapy
;
methods
;
Plant Extracts
;
therapeutic use
;
Plant Roots
;
cytology
;
growth & development
;
Treatment Outcome
8.Experience on Emotional Support of Hospital Nurses.
Hyun Joo PARK ; Bok Yae CHUNG ; Ok Hee KIM ; Yun Kyung KIM ; Hyo Ja AN ; Young Nae LEE ; Hye Sun BYUN ; Kyung Soon JEONG ; Ji Youn KIM
Journal of Korean Academy of Adult Nursing 2008;20(6):852-865
PURPOSE: This study was designed to explore what experiences nurses had while caring and providing emotional support for patients. METHODS: Participants were eight nurses working at hospitals for more than one year. Data were collected from June, 2006 to January, 2007 through in-depth interview by using tape-recordings. Data were analysed with the phenomenological method proposed by Colazzi(1978). RESULTS: From significant statements, 4 clustered themes, 7 themes and 23 sub-themes were extracted from the essential meaning of the emotional experience of hospital nurses. The 4 clustered themes were 'movement of mind', 'affection and service for patients', 'worthwhile and conflict' and 'control oneself'. The 7 themes were 'special feeling', 'rapport formation', 'consideration', 'human interaction', 'value discovery', 'loss of volition', and 'keep to balance'. CONCLUSION: Although nurses had tough experiences for providing care for patients' emotional support, they had also experienced spiritual maturity from its experience. The result of this study would contribute for nurses not only to care for patients who need emotional support but also to develop knowledge in nursing.
Humans
9.Double-blind, Placebo-controlled, Multi-center Study for Therapeutic Effects of Mountain Panax Ginseng C.A. Meyer Extract in Men with Erectile Dysfunction: a Preliminary Report.
Hong Sik KIM ; Seung Hyo WOO ; Shunghwan JO ; Eun Joo HAHN ; Nae Young YOUN ; Hyung Lae LEE
Korean Journal of Andrology 2006;24(2):84-88
PURPOSE: We investigated the effect of 100-year-old mountain ginseng(Panax ginseng C.A. Meyer, PG-CAM) extract on patients with erectile dysfunction(ED). MATERIALS AND METHODS: A total of 35 patients with ED(23 patients in PG-CAM administration group, 12 in placebo group) were enrolled in this double-blind study. The drug was administered for 12 weeks. Before and after administration, patients took the self-administered IIEF-5 questionnaire and were tested for serum hormone levels(testosterone, LH, FSH, estradiol), complete blood count, liver and renal function test, and urinalysis. RESULTS: The IIEF-5 scores for the placebo group were 19.7+/-2.3 and 19.9+/-3.6 before and after treatment, respectively. For all patients taking PG-CAM, IIEF-5 scores increased 18.1+/-5.6 to 20.2+/-4.5. For those patients with initial scores below 17, IIEF-5 scores increased from 12.4+/-6.2 to 19.7+/-6.7. These results indicate that PG-CAM may increase erectile function in ED patients, particularly those with poor erection. No changes were detected in hormonal levels or blood tests. No toxic side effect were reported. CONCLUSIONS: IIEF-5 score improved significantly in ED patients treated with PG-CAM, suggesting that PG-CAM extract could be a treatment candidates for ED.
Blood Cell Count
;
Double-Blind Method
;
Erectile Dysfunction*
;
Hematologic Tests
;
Humans
;
Liver
;
Male
;
Panax*
;
Penis
;
Surveys and Questionnaires
;
Urinalysis
10.Double-blind, Placebo-controlled, Multi-center Study for Therapeutic Effects of Mountain Panax Ginseng C.A. Meyer Extract in Men with Erectile Dysfunction: a Preliminary Report.
Hong Sik KIM ; Seung Hyo WOO ; Shunghwan JO ; Eun Joo HAHN ; Nae Young YOUN ; Hyung Lae LEE
Korean Journal of Andrology 2006;24(2):84-88
PURPOSE: We investigated the effect of 100-year-old mountain ginseng(Panax ginseng C.A. Meyer, PG-CAM) extract on patients with erectile dysfunction(ED). MATERIALS AND METHODS: A total of 35 patients with ED(23 patients in PG-CAM administration group, 12 in placebo group) were enrolled in this double-blind study. The drug was administered for 12 weeks. Before and after administration, patients took the self-administered IIEF-5 questionnaire and were tested for serum hormone levels(testosterone, LH, FSH, estradiol), complete blood count, liver and renal function test, and urinalysis. RESULTS: The IIEF-5 scores for the placebo group were 19.7+/-2.3 and 19.9+/-3.6 before and after treatment, respectively. For all patients taking PG-CAM, IIEF-5 scores increased 18.1+/-5.6 to 20.2+/-4.5. For those patients with initial scores below 17, IIEF-5 scores increased from 12.4+/-6.2 to 19.7+/-6.7. These results indicate that PG-CAM may increase erectile function in ED patients, particularly those with poor erection. No changes were detected in hormonal levels or blood tests. No toxic side effect were reported. CONCLUSIONS: IIEF-5 score improved significantly in ED patients treated with PG-CAM, suggesting that PG-CAM extract could be a treatment candidates for ED.
Blood Cell Count
;
Double-Blind Method
;
Erectile Dysfunction*
;
Hematologic Tests
;
Humans
;
Liver
;
Male
;
Panax*
;
Penis
;
Surveys and Questionnaires
;
Urinalysis

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