1.Biportal endoscopic lumbar interbody fusion using a large polyetheretherketone cage: preliminary results
Sang-Min PARK ; Hyun-Jin PARK ; Ki-Han YOU ; Ho-Joong KIM ; Jin S. YEOM
Asian Spine Journal 2025;19(2):252-258
		                        		
		                        			 Methods:
		                        			Twelve consecutive patients underwent single-level BELIF for lumbar degenerative disease. The technique involves two small portals, one each for endoscopy and instruments. A large PEEK cage was inserted through a posterolateral approach. Clinical outcomes, including a Visual Analog Scale for back and leg pain, the Oswestry Disability Index, and the European Quality of Life-5 Dimensions, were assessed preoperatively and at 3, 6, and 12 months postoperatively. Fusion status was evaluated using computed tomography (CT) at 12 months. 
		                        		
		                        			Results:
		                        			The mean patient age was 69.1±7.2 years, with operations predominantly at the L4–5 level (83%). The mean operation time was 149.7±37.4 minutes, and the average surgical drainage was 201.4±59.7 mL. All clinical outcome measures showed significant improvement at 12 months (p<0.05). Fusion was achieved in 83.3% of patients. Cage subsidence (>1 mm) occurred in one patient (8.3%). Complications included one case each of incidental durotomy, wrong-site surgery, and wound dehiscence and three cases of asymptomatic hematoma. 
		                        		
		                        			Conclusions
		                        			BELIF using a large PEEK cage demonstrated promising clinical outcomes and fusion rates. The technique offers enhanced visualization and enables direct neural decompression while minimizing tissue trauma. The use of a large PEEK cage may contribute to improved stability and reduced subsidence risk. 
		                        		
		                        		
		                        		
		                        	
2.Biportal endoscopic lumbar interbody fusion using a large polyetheretherketone cage: preliminary results
Sang-Min PARK ; Hyun-Jin PARK ; Ki-Han YOU ; Ho-Joong KIM ; Jin S. YEOM
Asian Spine Journal 2025;19(2):252-258
		                        		
		                        			 Methods:
		                        			Twelve consecutive patients underwent single-level BELIF for lumbar degenerative disease. The technique involves two small portals, one each for endoscopy and instruments. A large PEEK cage was inserted through a posterolateral approach. Clinical outcomes, including a Visual Analog Scale for back and leg pain, the Oswestry Disability Index, and the European Quality of Life-5 Dimensions, were assessed preoperatively and at 3, 6, and 12 months postoperatively. Fusion status was evaluated using computed tomography (CT) at 12 months. 
		                        		
		                        			Results:
		                        			The mean patient age was 69.1±7.2 years, with operations predominantly at the L4–5 level (83%). The mean operation time was 149.7±37.4 minutes, and the average surgical drainage was 201.4±59.7 mL. All clinical outcome measures showed significant improvement at 12 months (p<0.05). Fusion was achieved in 83.3% of patients. Cage subsidence (>1 mm) occurred in one patient (8.3%). Complications included one case each of incidental durotomy, wrong-site surgery, and wound dehiscence and three cases of asymptomatic hematoma. 
		                        		
		                        			Conclusions
		                        			BELIF using a large PEEK cage demonstrated promising clinical outcomes and fusion rates. The technique offers enhanced visualization and enables direct neural decompression while minimizing tissue trauma. The use of a large PEEK cage may contribute to improved stability and reduced subsidence risk. 
		                        		
		                        		
		                        		
		                        	
3.Biportal endoscopic lumbar interbody fusion using a large polyetheretherketone cage: preliminary results
Sang-Min PARK ; Hyun-Jin PARK ; Ki-Han YOU ; Ho-Joong KIM ; Jin S. YEOM
Asian Spine Journal 2025;19(2):252-258
		                        		
		                        			 Methods:
		                        			Twelve consecutive patients underwent single-level BELIF for lumbar degenerative disease. The technique involves two small portals, one each for endoscopy and instruments. A large PEEK cage was inserted through a posterolateral approach. Clinical outcomes, including a Visual Analog Scale for back and leg pain, the Oswestry Disability Index, and the European Quality of Life-5 Dimensions, were assessed preoperatively and at 3, 6, and 12 months postoperatively. Fusion status was evaluated using computed tomography (CT) at 12 months. 
		                        		
		                        			Results:
		                        			The mean patient age was 69.1±7.2 years, with operations predominantly at the L4–5 level (83%). The mean operation time was 149.7±37.4 minutes, and the average surgical drainage was 201.4±59.7 mL. All clinical outcome measures showed significant improvement at 12 months (p<0.05). Fusion was achieved in 83.3% of patients. Cage subsidence (>1 mm) occurred in one patient (8.3%). Complications included one case each of incidental durotomy, wrong-site surgery, and wound dehiscence and three cases of asymptomatic hematoma. 
		                        		
		                        			Conclusions
		                        			BELIF using a large PEEK cage demonstrated promising clinical outcomes and fusion rates. The technique offers enhanced visualization and enables direct neural decompression while minimizing tissue trauma. The use of a large PEEK cage may contribute to improved stability and reduced subsidence risk. 
		                        		
		                        		
		                        		
		                        	
4.Impact of Early Continuous Kidney Replacement Therapy in Patients With Sepsis-Associated Acute Kidney Injury:An Analysis of the MIMIC-IV Database
Yongseop LEE ; Jun Hye SEO ; Jaeeun SEONG ; Sang Min AHN ; Min HAN ; Jung Ah LEE ; Jung Ho KIM ; Jin Young AHN ; Su Jin JEONG ; Jun Yong CHOI ; Joon-Sup YEOM ; Hyung Jung OH ; Nam Su KU
Journal of Korean Medical Science 2024;39(43):e276-
		                        		
		                        			 Background:
		                        			Renal replacement therapy (RRT) is an important treatment option for sepsisassociated acute kidney injury (AKI); however, the optimal timing for its initiation remains controversial. Herein, we investigated the clinical outcomes of early continuous kidney replacement therapy (CKRT), defined as CKRT initiation within 6 hours of sepsis-associated AKI onset, which was earlier than the initiation time defined in previous studies. 
		                        		
		                        			Methods:
		                        			We used clinical data sourced from the Medical Information Mart for Intensive Care IV (MIMIC-IV) database. This study included patients aged ≥ 18 years who met the sepsis diagnostic criteria and received CKRT because of stage 2 or 3 AKI. Early and late CKRTs were defined as CKRT initiation within 6 hours and after 6 hours of the development of sepsisassociated AKI, respectively. 
		                        		
		                        			Results:
		                        			Of the 33,236 patients diagnosed with sepsis, 553 underwent CKRT for sepsisassociated AKI. After excluding cases of early mortality and patients with a dialysis history, 45 and 334 patients were included in the early and late CKRT groups, respectively. After propensity score matching, the 28-day mortality rate was significantly lower in the early CKRT group than in the late CKRT group (26.7% vs. 43.9%, P = 0.035). The early CKRT group also had a significantly greater number of days free of mechanical ventilation (median, 19; interquartile range [IQR], 3–25) and vasopressor administration (median, 21; IQR, 5–26) than the late CKRT group did (median, 10.5; IQR, 0–23; P = 0.037 and median, 13.5;IQR, 0–25; P = 0.028, respectively). The Kaplan–Meier curve also showed that early CKRT initiation was associated with an improved 28-day mortality rate (log-rank test, P = 0.040).In contrast, there was no significant difference in the 28-day mortality between patients who started CKRT within 12 hours and those who did not (log-rank test, P = 0.237). 
		                        		
		                        			Conclusion
		                        			Early CKRT initiation improved the survival of patients with sepsis-associated AKI. Initiation of CKRT should be considered as early as possible after sepsis-associated AKI onset, preferably within 6 hours. 
		                        		
		                        		
		                        		
		                        	
5.Epidemiological and Clinical Characteristics of Women Living with HIV in Korea
Sang Min AHN ; Yong Seop LEE ; Min HAN ; Jung Ah LEE ; Jae Eun SEONG ; Yae Jee BAEK ; JongHoon HYUN ; Jung Ho KIM ; Jin Young AHN ; Dong Hyun OH ; Su Jin JEONG ; Ji Hyeon BAEK ; Nam Su KU ; Hee Kyoung CHOI ; Yoonseon PARK ; BumSik CHIN ; Young Keun KIM ; Joon Sup YEOM ; Young Hwa CHOI ; Jun Yong CHOI
Infection and Chemotherapy 2024;56(3):369-377
		                        		
		                        			 Background:
		                        			While Korea maintains a low prevalence of human immunodeficiency virus (HIV), the number of newly diagnosed cases has been steadily rising, reaching approximately 1,000 annually in recent years. The 2022 annual report from the Korea Disease Control and Prevention Agency revealed that women living with HIV (WLWH) constitute 6.4% of the total confirmed people living with the HIV population, totaling 1,219 individuals. Despite this, only a few studies have focused on WLWH in Korea. This study aims to analyze the epidemiological and clinical characteristics of WLWH in Korea. 
		                        		
		                        			Materials and Methods:
		                        			We retrospectively collected data by reviewing the medical records of all WLWH who visited 10 urban referral hospitals across Korea between January 2005 and May 2023. 
		                        		
		                        			Results:
		                        			A total of 443 WLWH were enrolled in this study. The predominant risk exposure was heterosexual contact, with 235 (53%) participants either married or cohabiting with a male partner at their initial clinic visit. Among the participants, 334 (77.7%) were Korean, 27 (6.1%) were Southeast Asian, and 19 (4.3%) were African. Antiretroviral therapy was initiated by 404 WLWH (91.2%). We observed 118 pregnancies in WLWH following their HIV diagnosis, resulting in 78 live births (66.1%), 18 induced abortions (15.2%), 10 pre-viable fetal losses (8.5%), and four stillbirths (3.4%). Over a cumulative follow-up duration of 3,202.1 years, the incidence rates of breast and cervical cancers were both 2.18 per 1,000 person-years. Additionally, the incidence rates of pelvic inflammatory disease, cervical intraepithelial neoplasm (above grade II), and osteoporosis were 4.67, 11.21, and 13.39 per 1,000 patient-years, respectively. 
		                        		
		                        			Conclusion
		                        			This is the first multicenter study to investigate the clinical and epidemiological characteristics of WLWH in Korea. The incidence and prevalence of diseases in women, including breast cancer, cervical cancer, and chronic comorbidities, are high in WLWH in Korea; therefore, further research and efforts are needed to manage these diseases. 
		                        		
		                        		
		                        		
		                        	
6.Impact of Early Continuous Kidney Replacement Therapy in Patients With Sepsis-Associated Acute Kidney Injury:An Analysis of the MIMIC-IV Database
Yongseop LEE ; Jun Hye SEO ; Jaeeun SEONG ; Sang Min AHN ; Min HAN ; Jung Ah LEE ; Jung Ho KIM ; Jin Young AHN ; Su Jin JEONG ; Jun Yong CHOI ; Joon-Sup YEOM ; Hyung Jung OH ; Nam Su KU
Journal of Korean Medical Science 2024;39(43):e276-
		                        		
		                        			 Background:
		                        			Renal replacement therapy (RRT) is an important treatment option for sepsisassociated acute kidney injury (AKI); however, the optimal timing for its initiation remains controversial. Herein, we investigated the clinical outcomes of early continuous kidney replacement therapy (CKRT), defined as CKRT initiation within 6 hours of sepsis-associated AKI onset, which was earlier than the initiation time defined in previous studies. 
		                        		
		                        			Methods:
		                        			We used clinical data sourced from the Medical Information Mart for Intensive Care IV (MIMIC-IV) database. This study included patients aged ≥ 18 years who met the sepsis diagnostic criteria and received CKRT because of stage 2 or 3 AKI. Early and late CKRTs were defined as CKRT initiation within 6 hours and after 6 hours of the development of sepsisassociated AKI, respectively. 
		                        		
		                        			Results:
		                        			Of the 33,236 patients diagnosed with sepsis, 553 underwent CKRT for sepsisassociated AKI. After excluding cases of early mortality and patients with a dialysis history, 45 and 334 patients were included in the early and late CKRT groups, respectively. After propensity score matching, the 28-day mortality rate was significantly lower in the early CKRT group than in the late CKRT group (26.7% vs. 43.9%, P = 0.035). The early CKRT group also had a significantly greater number of days free of mechanical ventilation (median, 19; interquartile range [IQR], 3–25) and vasopressor administration (median, 21; IQR, 5–26) than the late CKRT group did (median, 10.5; IQR, 0–23; P = 0.037 and median, 13.5;IQR, 0–25; P = 0.028, respectively). The Kaplan–Meier curve also showed that early CKRT initiation was associated with an improved 28-day mortality rate (log-rank test, P = 0.040).In contrast, there was no significant difference in the 28-day mortality between patients who started CKRT within 12 hours and those who did not (log-rank test, P = 0.237). 
		                        		
		                        			Conclusion
		                        			Early CKRT initiation improved the survival of patients with sepsis-associated AKI. Initiation of CKRT should be considered as early as possible after sepsis-associated AKI onset, preferably within 6 hours. 
		                        		
		                        		
		                        		
		                        	
7.Epidemiological and Clinical Characteristics of Women Living with HIV in Korea
Sang Min AHN ; Yong Seop LEE ; Min HAN ; Jung Ah LEE ; Jae Eun SEONG ; Yae Jee BAEK ; JongHoon HYUN ; Jung Ho KIM ; Jin Young AHN ; Dong Hyun OH ; Su Jin JEONG ; Ji Hyeon BAEK ; Nam Su KU ; Hee Kyoung CHOI ; Yoonseon PARK ; BumSik CHIN ; Young Keun KIM ; Joon Sup YEOM ; Young Hwa CHOI ; Jun Yong CHOI
Infection and Chemotherapy 2024;56(3):369-377
		                        		
		                        			 Background:
		                        			While Korea maintains a low prevalence of human immunodeficiency virus (HIV), the number of newly diagnosed cases has been steadily rising, reaching approximately 1,000 annually in recent years. The 2022 annual report from the Korea Disease Control and Prevention Agency revealed that women living with HIV (WLWH) constitute 6.4% of the total confirmed people living with the HIV population, totaling 1,219 individuals. Despite this, only a few studies have focused on WLWH in Korea. This study aims to analyze the epidemiological and clinical characteristics of WLWH in Korea. 
		                        		
		                        			Materials and Methods:
		                        			We retrospectively collected data by reviewing the medical records of all WLWH who visited 10 urban referral hospitals across Korea between January 2005 and May 2023. 
		                        		
		                        			Results:
		                        			A total of 443 WLWH were enrolled in this study. The predominant risk exposure was heterosexual contact, with 235 (53%) participants either married or cohabiting with a male partner at their initial clinic visit. Among the participants, 334 (77.7%) were Korean, 27 (6.1%) were Southeast Asian, and 19 (4.3%) were African. Antiretroviral therapy was initiated by 404 WLWH (91.2%). We observed 118 pregnancies in WLWH following their HIV diagnosis, resulting in 78 live births (66.1%), 18 induced abortions (15.2%), 10 pre-viable fetal losses (8.5%), and four stillbirths (3.4%). Over a cumulative follow-up duration of 3,202.1 years, the incidence rates of breast and cervical cancers were both 2.18 per 1,000 person-years. Additionally, the incidence rates of pelvic inflammatory disease, cervical intraepithelial neoplasm (above grade II), and osteoporosis were 4.67, 11.21, and 13.39 per 1,000 patient-years, respectively. 
		                        		
		                        			Conclusion
		                        			This is the first multicenter study to investigate the clinical and epidemiological characteristics of WLWH in Korea. The incidence and prevalence of diseases in women, including breast cancer, cervical cancer, and chronic comorbidities, are high in WLWH in Korea; therefore, further research and efforts are needed to manage these diseases. 
		                        		
		                        		
		                        		
		                        	
8.Impact of Early Continuous Kidney Replacement Therapy in Patients With Sepsis-Associated Acute Kidney Injury:An Analysis of the MIMIC-IV Database
Yongseop LEE ; Jun Hye SEO ; Jaeeun SEONG ; Sang Min AHN ; Min HAN ; Jung Ah LEE ; Jung Ho KIM ; Jin Young AHN ; Su Jin JEONG ; Jun Yong CHOI ; Joon-Sup YEOM ; Hyung Jung OH ; Nam Su KU
Journal of Korean Medical Science 2024;39(43):e276-
		                        		
		                        			 Background:
		                        			Renal replacement therapy (RRT) is an important treatment option for sepsisassociated acute kidney injury (AKI); however, the optimal timing for its initiation remains controversial. Herein, we investigated the clinical outcomes of early continuous kidney replacement therapy (CKRT), defined as CKRT initiation within 6 hours of sepsis-associated AKI onset, which was earlier than the initiation time defined in previous studies. 
		                        		
		                        			Methods:
		                        			We used clinical data sourced from the Medical Information Mart for Intensive Care IV (MIMIC-IV) database. This study included patients aged ≥ 18 years who met the sepsis diagnostic criteria and received CKRT because of stage 2 or 3 AKI. Early and late CKRTs were defined as CKRT initiation within 6 hours and after 6 hours of the development of sepsisassociated AKI, respectively. 
		                        		
		                        			Results:
		                        			Of the 33,236 patients diagnosed with sepsis, 553 underwent CKRT for sepsisassociated AKI. After excluding cases of early mortality and patients with a dialysis history, 45 and 334 patients were included in the early and late CKRT groups, respectively. After propensity score matching, the 28-day mortality rate was significantly lower in the early CKRT group than in the late CKRT group (26.7% vs. 43.9%, P = 0.035). The early CKRT group also had a significantly greater number of days free of mechanical ventilation (median, 19; interquartile range [IQR], 3–25) and vasopressor administration (median, 21; IQR, 5–26) than the late CKRT group did (median, 10.5; IQR, 0–23; P = 0.037 and median, 13.5;IQR, 0–25; P = 0.028, respectively). The Kaplan–Meier curve also showed that early CKRT initiation was associated with an improved 28-day mortality rate (log-rank test, P = 0.040).In contrast, there was no significant difference in the 28-day mortality between patients who started CKRT within 12 hours and those who did not (log-rank test, P = 0.237). 
		                        		
		                        			Conclusion
		                        			Early CKRT initiation improved the survival of patients with sepsis-associated AKI. Initiation of CKRT should be considered as early as possible after sepsis-associated AKI onset, preferably within 6 hours. 
		                        		
		                        		
		                        		
		                        	
9.Epidemiological and Clinical Characteristics of Women Living with HIV in Korea
Sang Min AHN ; Yong Seop LEE ; Min HAN ; Jung Ah LEE ; Jae Eun SEONG ; Yae Jee BAEK ; JongHoon HYUN ; Jung Ho KIM ; Jin Young AHN ; Dong Hyun OH ; Su Jin JEONG ; Ji Hyeon BAEK ; Nam Su KU ; Hee Kyoung CHOI ; Yoonseon PARK ; BumSik CHIN ; Young Keun KIM ; Joon Sup YEOM ; Young Hwa CHOI ; Jun Yong CHOI
Infection and Chemotherapy 2024;56(3):369-377
		                        		
		                        			 Background:
		                        			While Korea maintains a low prevalence of human immunodeficiency virus (HIV), the number of newly diagnosed cases has been steadily rising, reaching approximately 1,000 annually in recent years. The 2022 annual report from the Korea Disease Control and Prevention Agency revealed that women living with HIV (WLWH) constitute 6.4% of the total confirmed people living with the HIV population, totaling 1,219 individuals. Despite this, only a few studies have focused on WLWH in Korea. This study aims to analyze the epidemiological and clinical characteristics of WLWH in Korea. 
		                        		
		                        			Materials and Methods:
		                        			We retrospectively collected data by reviewing the medical records of all WLWH who visited 10 urban referral hospitals across Korea between January 2005 and May 2023. 
		                        		
		                        			Results:
		                        			A total of 443 WLWH were enrolled in this study. The predominant risk exposure was heterosexual contact, with 235 (53%) participants either married or cohabiting with a male partner at their initial clinic visit. Among the participants, 334 (77.7%) were Korean, 27 (6.1%) were Southeast Asian, and 19 (4.3%) were African. Antiretroviral therapy was initiated by 404 WLWH (91.2%). We observed 118 pregnancies in WLWH following their HIV diagnosis, resulting in 78 live births (66.1%), 18 induced abortions (15.2%), 10 pre-viable fetal losses (8.5%), and four stillbirths (3.4%). Over a cumulative follow-up duration of 3,202.1 years, the incidence rates of breast and cervical cancers were both 2.18 per 1,000 person-years. Additionally, the incidence rates of pelvic inflammatory disease, cervical intraepithelial neoplasm (above grade II), and osteoporosis were 4.67, 11.21, and 13.39 per 1,000 patient-years, respectively. 
		                        		
		                        			Conclusion
		                        			This is the first multicenter study to investigate the clinical and epidemiological characteristics of WLWH in Korea. The incidence and prevalence of diseases in women, including breast cancer, cervical cancer, and chronic comorbidities, are high in WLWH in Korea; therefore, further research and efforts are needed to manage these diseases. 
		                        		
		                        		
		                        		
		                        	
10.Impact of Early Continuous Kidney Replacement Therapy in Patients With Sepsis-Associated Acute Kidney Injury:An Analysis of the MIMIC-IV Database
Yongseop LEE ; Jun Hye SEO ; Jaeeun SEONG ; Sang Min AHN ; Min HAN ; Jung Ah LEE ; Jung Ho KIM ; Jin Young AHN ; Su Jin JEONG ; Jun Yong CHOI ; Joon-Sup YEOM ; Hyung Jung OH ; Nam Su KU
Journal of Korean Medical Science 2024;39(43):e276-
		                        		
		                        			 Background:
		                        			Renal replacement therapy (RRT) is an important treatment option for sepsisassociated acute kidney injury (AKI); however, the optimal timing for its initiation remains controversial. Herein, we investigated the clinical outcomes of early continuous kidney replacement therapy (CKRT), defined as CKRT initiation within 6 hours of sepsis-associated AKI onset, which was earlier than the initiation time defined in previous studies. 
		                        		
		                        			Methods:
		                        			We used clinical data sourced from the Medical Information Mart for Intensive Care IV (MIMIC-IV) database. This study included patients aged ≥ 18 years who met the sepsis diagnostic criteria and received CKRT because of stage 2 or 3 AKI. Early and late CKRTs were defined as CKRT initiation within 6 hours and after 6 hours of the development of sepsisassociated AKI, respectively. 
		                        		
		                        			Results:
		                        			Of the 33,236 patients diagnosed with sepsis, 553 underwent CKRT for sepsisassociated AKI. After excluding cases of early mortality and patients with a dialysis history, 45 and 334 patients were included in the early and late CKRT groups, respectively. After propensity score matching, the 28-day mortality rate was significantly lower in the early CKRT group than in the late CKRT group (26.7% vs. 43.9%, P = 0.035). The early CKRT group also had a significantly greater number of days free of mechanical ventilation (median, 19; interquartile range [IQR], 3–25) and vasopressor administration (median, 21; IQR, 5–26) than the late CKRT group did (median, 10.5; IQR, 0–23; P = 0.037 and median, 13.5;IQR, 0–25; P = 0.028, respectively). The Kaplan–Meier curve also showed that early CKRT initiation was associated with an improved 28-day mortality rate (log-rank test, P = 0.040).In contrast, there was no significant difference in the 28-day mortality between patients who started CKRT within 12 hours and those who did not (log-rank test, P = 0.237). 
		                        		
		                        			Conclusion
		                        			Early CKRT initiation improved the survival of patients with sepsis-associated AKI. Initiation of CKRT should be considered as early as possible after sepsis-associated AKI onset, preferably within 6 hours. 
		                        		
		                        		
		                        		
		                        	
            
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