1.Administration of Calcium and Magnesium in Acute Intracerebral Hemorrhage Patients: Assessing Safety and Feasibility
Moinay KIM ; Wonhyoung PARK ; Jun Ha HWANG ; Jae Hyun KIM ; Yeongu CHUNG ; Si Un LEE ; Joonho BYUN ; Jung Cheol PARK ; Jae Sung AHN ; Seungjoo LEE
Journal of Korean Medical Science 2025;40(14):e45-
		                        		
		                        			 Background:
		                        			Serum calcium and magnesium levels are a key factor of the coagulation cascade and may potentially contribute to the pathophysiology of intracerebral hemorrhage (ICH) expansion. The aim of this study was to attain and sustain target levels of serum calcium and magnesium for three days following admission. 
		                        		
		                        			Methods:
		                        			A single-blind, prospective, multicenter randomized study was conducted from 2019 to 2022 years, enrolling acute ICH patients aged 18–80 years, with radiological diagnosis and without surgical intervention. Participants were randomly assigned in a 1:1 ratio to either the study group or the control group. In the study group, the target serum levels of calcium (9–10.2 mg/dL) and magnesium (2–3 mg/dL) were actively achieved and maintained for a duration of 3 days following admission. The primary outcome was the expansion of ICH volume within the first 3 days between the study group and the control groups. 
		                        		
		                        			Results:
		                        			After implementing inclusion/exclusion criteria, 105 of 354 patients remained in the study. There were no significant differences in ICH volume on hospital days 2 and 3 between the groups. Admission factors including Glasgow coma scale score, hemoglobin level, ICH volume, and spot sign showed significant correlations in multivariate analysis. On the third day of hospitalization, admission serum magnesium levels showed a significant correlation with ICH expansion, whereas calcium levels did not. 
		                        		
		                        			Conclusion
		                        			Admission serum magnesium levels were found to correlate with hematoma expansion in patients with acute ICH. While magnesium itself may not be a direct therapeutic target, it could serve as a valuable indicator for identifying potential therapeutic strategies aimed at preventing ICH volume increase. 
		                        		
		                        		
		                        		
		                        	
2.Erratum: Correction of Funding Information in the Article “Administration of Calcium and Magnesium in Acute Intracerebral Hemorrhage Patients: Assessing Safety and Feasibility”
Moinay KIM ; Wonhyoung PARK ; Jun Ha HWANG ; Jae Hyun KIM ; Yeongu CHUNG ; Si Un LEE ; Joonho BYUN ; Jung Cheol PARK ; Jae Sung AHN ; Seungjoo LEE
Journal of Korean Medical Science 2025;40(17):e157-
		                        		
		                        		
		                        		
		                        	
3.Administration of Calcium and Magnesium in Acute Intracerebral Hemorrhage Patients: Assessing Safety and Feasibility
Moinay KIM ; Wonhyoung PARK ; Jun Ha HWANG ; Jae Hyun KIM ; Yeongu CHUNG ; Si Un LEE ; Joonho BYUN ; Jung Cheol PARK ; Jae Sung AHN ; Seungjoo LEE
Journal of Korean Medical Science 2025;40(14):e45-
		                        		
		                        			 Background:
		                        			Serum calcium and magnesium levels are a key factor of the coagulation cascade and may potentially contribute to the pathophysiology of intracerebral hemorrhage (ICH) expansion. The aim of this study was to attain and sustain target levels of serum calcium and magnesium for three days following admission. 
		                        		
		                        			Methods:
		                        			A single-blind, prospective, multicenter randomized study was conducted from 2019 to 2022 years, enrolling acute ICH patients aged 18–80 years, with radiological diagnosis and without surgical intervention. Participants were randomly assigned in a 1:1 ratio to either the study group or the control group. In the study group, the target serum levels of calcium (9–10.2 mg/dL) and magnesium (2–3 mg/dL) were actively achieved and maintained for a duration of 3 days following admission. The primary outcome was the expansion of ICH volume within the first 3 days between the study group and the control groups. 
		                        		
		                        			Results:
		                        			After implementing inclusion/exclusion criteria, 105 of 354 patients remained in the study. There were no significant differences in ICH volume on hospital days 2 and 3 between the groups. Admission factors including Glasgow coma scale score, hemoglobin level, ICH volume, and spot sign showed significant correlations in multivariate analysis. On the third day of hospitalization, admission serum magnesium levels showed a significant correlation with ICH expansion, whereas calcium levels did not. 
		                        		
		                        			Conclusion
		                        			Admission serum magnesium levels were found to correlate with hematoma expansion in patients with acute ICH. While magnesium itself may not be a direct therapeutic target, it could serve as a valuable indicator for identifying potential therapeutic strategies aimed at preventing ICH volume increase. 
		                        		
		                        		
		                        		
		                        	
4.Erratum: Correction of Funding Information in the Article “Administration of Calcium and Magnesium in Acute Intracerebral Hemorrhage Patients: Assessing Safety and Feasibility”
Moinay KIM ; Wonhyoung PARK ; Jun Ha HWANG ; Jae Hyun KIM ; Yeongu CHUNG ; Si Un LEE ; Joonho BYUN ; Jung Cheol PARK ; Jae Sung AHN ; Seungjoo LEE
Journal of Korean Medical Science 2025;40(17):e157-
		                        		
		                        		
		                        		
		                        	
5.Administration of Calcium and Magnesium in Acute Intracerebral Hemorrhage Patients: Assessing Safety and Feasibility
Moinay KIM ; Wonhyoung PARK ; Jun Ha HWANG ; Jae Hyun KIM ; Yeongu CHUNG ; Si Un LEE ; Joonho BYUN ; Jung Cheol PARK ; Jae Sung AHN ; Seungjoo LEE
Journal of Korean Medical Science 2025;40(14):e45-
		                        		
		                        			 Background:
		                        			Serum calcium and magnesium levels are a key factor of the coagulation cascade and may potentially contribute to the pathophysiology of intracerebral hemorrhage (ICH) expansion. The aim of this study was to attain and sustain target levels of serum calcium and magnesium for three days following admission. 
		                        		
		                        			Methods:
		                        			A single-blind, prospective, multicenter randomized study was conducted from 2019 to 2022 years, enrolling acute ICH patients aged 18–80 years, with radiological diagnosis and without surgical intervention. Participants were randomly assigned in a 1:1 ratio to either the study group or the control group. In the study group, the target serum levels of calcium (9–10.2 mg/dL) and magnesium (2–3 mg/dL) were actively achieved and maintained for a duration of 3 days following admission. The primary outcome was the expansion of ICH volume within the first 3 days between the study group and the control groups. 
		                        		
		                        			Results:
		                        			After implementing inclusion/exclusion criteria, 105 of 354 patients remained in the study. There were no significant differences in ICH volume on hospital days 2 and 3 between the groups. Admission factors including Glasgow coma scale score, hemoglobin level, ICH volume, and spot sign showed significant correlations in multivariate analysis. On the third day of hospitalization, admission serum magnesium levels showed a significant correlation with ICH expansion, whereas calcium levels did not. 
		                        		
		                        			Conclusion
		                        			Admission serum magnesium levels were found to correlate with hematoma expansion in patients with acute ICH. While magnesium itself may not be a direct therapeutic target, it could serve as a valuable indicator for identifying potential therapeutic strategies aimed at preventing ICH volume increase. 
		                        		
		                        		
		                        		
		                        	
6.Erratum: Correction of Funding Information in the Article “Administration of Calcium and Magnesium in Acute Intracerebral Hemorrhage Patients: Assessing Safety and Feasibility”
Moinay KIM ; Wonhyoung PARK ; Jun Ha HWANG ; Jae Hyun KIM ; Yeongu CHUNG ; Si Un LEE ; Joonho BYUN ; Jung Cheol PARK ; Jae Sung AHN ; Seungjoo LEE
Journal of Korean Medical Science 2025;40(17):e157-
		                        		
		                        		
		                        		
		                        	
7.Administration of Calcium and Magnesium in Acute Intracerebral Hemorrhage Patients: Assessing Safety and Feasibility
Moinay KIM ; Wonhyoung PARK ; Jun Ha HWANG ; Jae Hyun KIM ; Yeongu CHUNG ; Si Un LEE ; Joonho BYUN ; Jung Cheol PARK ; Jae Sung AHN ; Seungjoo LEE
Journal of Korean Medical Science 2025;40(14):e45-
		                        		
		                        			 Background:
		                        			Serum calcium and magnesium levels are a key factor of the coagulation cascade and may potentially contribute to the pathophysiology of intracerebral hemorrhage (ICH) expansion. The aim of this study was to attain and sustain target levels of serum calcium and magnesium for three days following admission. 
		                        		
		                        			Methods:
		                        			A single-blind, prospective, multicenter randomized study was conducted from 2019 to 2022 years, enrolling acute ICH patients aged 18–80 years, with radiological diagnosis and without surgical intervention. Participants were randomly assigned in a 1:1 ratio to either the study group or the control group. In the study group, the target serum levels of calcium (9–10.2 mg/dL) and magnesium (2–3 mg/dL) were actively achieved and maintained for a duration of 3 days following admission. The primary outcome was the expansion of ICH volume within the first 3 days between the study group and the control groups. 
		                        		
		                        			Results:
		                        			After implementing inclusion/exclusion criteria, 105 of 354 patients remained in the study. There were no significant differences in ICH volume on hospital days 2 and 3 between the groups. Admission factors including Glasgow coma scale score, hemoglobin level, ICH volume, and spot sign showed significant correlations in multivariate analysis. On the third day of hospitalization, admission serum magnesium levels showed a significant correlation with ICH expansion, whereas calcium levels did not. 
		                        		
		                        			Conclusion
		                        			Admission serum magnesium levels were found to correlate with hematoma expansion in patients with acute ICH. While magnesium itself may not be a direct therapeutic target, it could serve as a valuable indicator for identifying potential therapeutic strategies aimed at preventing ICH volume increase. 
		                        		
		                        		
		                        		
		                        	
8.Erratum: Correction of Funding Information in the Article “Administration of Calcium and Magnesium in Acute Intracerebral Hemorrhage Patients: Assessing Safety and Feasibility”
Moinay KIM ; Wonhyoung PARK ; Jun Ha HWANG ; Jae Hyun KIM ; Yeongu CHUNG ; Si Un LEE ; Joonho BYUN ; Jung Cheol PARK ; Jae Sung AHN ; Seungjoo LEE
Journal of Korean Medical Science 2025;40(17):e157-
		                        		
		                        		
		                        		
		                        	
9.Cutaneous Adverse Effects of Amivantamab in Patients with Non-Small Cell Lung Cancer
Taemin LEE ; Yeon Joo JUNG ; Sehhoon PARK ; Hyun Ae JUNG ; Jong-Mu SUN ; Jin Seok AHN ; Myung-Ju AHN ; Se-Hoon LEE ; Joonho SHIM
Korean Journal of Dermatology 2024;62(5):279-284
		                        		
		                        			 Background:
		                        			The cutaneous adverse effects (AEs) of amivantamab, a novel monoclonal bispecific antibody against the epidermal growth factor receptor and mesenchymal-epithelial transcription factor, have not been investigated. 
		                        		
		                        			Objective:
		                        			To analyze the type and prevalence of cutaneous AEs in patients with non-small cell lung cancer (NSCLC) treated with amivantamab. 
		                        		
		                        			Methods:
		                        			A single-institution retrospective medical record review was conducted on patients with NSCLC who were treated with amivantamab between January 1, 2021, and June 30, 2023. A total of 37 patients receiving amivantamab monotherapy for NSCLC were included in this study. Demographic data (age, sex, body mass index, age at cancer diagnosis, age at amivantamab therapy initiation, and duration of amivantamab use) and the types and severity of cutaneous AEs were evaluated. 
		                        		
		                        			Results:
		                        			Cutaneous AEs occurred in 59.5% of the patients. The most common AEs were maculopapular eruptions (37.8%), paronychia (24.3%), pruritus/xerosis (16.2%), acneiform eruptions (13.5%), pustulosis (5.4%), and scalp rashes (5.4%). No Grade 3 cutaneous AE, which led to the discontinuation of amivantamab therapy, was observed. 
		                        		
		                        			Conclusion
		                        			Our data describes an extensive review of cutaneous AEs caused by amivantamab. Further research with a larger patient population is necessary to reliably predict and manage cutaneous AEs associated with amivantamab. 
		                        		
		                        		
		                        		
		                        	
10.Occupational Characteristics and Health Status of Vietnamese Male Migrant Workers in the Republic of Korea
Ohwi KWON ; Ji-Hun SONG ; Jeong-Ok KONG ; Seong-Won MA ; Young Shin LEE ; Joonho AHN
Safety and Health at Work 2023;14(3):267-271
		                        		
		                        			 Background:
		                        			The objective of this study is to identify the working conditions and health status of Vietnamese male migrant workers in Republic of Korea, in comparison to the Korean general population. 
		                        		
		                        			Methods:
		                        			We conducted our survey through the Migrant People Center, and we received completed questionnaires from 87 male Vietnamese migrant workers. The questionnaire employed was identical to those used in the Korean Working Conditions Survey and the 2020 Korea National Health and Nutrition Examination Survey. The collected data from the Vietnamese migrant workers was then compared with the Korean reference population using indirect age-standardization. 
		                        		
		                        			Results:
		                        			Vietnamese male workers demonstrated a higher prevalence of health problems including hearing problems (age-standardized prevalence ratio (aSPR) 13.22, 95% confidence interval [CI]: 8.07–20.4), skin problems (aSPR 13.49, 95% CI: 8.07–20.4), and low back pain (aSPR 8.40, 95% CI: 6.50–10.69). Elevated exposure to workplace hazards such as chemicals (aSPR 2.36, 95% CI: 1.51–3.51), organic solvents (aSPR 2.22, 95% CI: 1.44–3.28), handling of heavy objects (aSPR 1.67, 95% CI: 1.24–2.21), and high temperatures (aSPR 1.96, 95% CI: 1.46–2.57) was observed among them. Additionally, they faced a higher risk of no personal protective equipment (aSPR 2.53, 95% CI: 1.26–4.52) and a greater prevalence of unmet medical needs (aSPR 7.14, 95% CI: 4.74–10.32). 
		                        		
		                        			Conclusion
		                        			Our findings highlight the elevated workplace hazards, health problems, and unmet medical needs among Vietnamese male workers compared to the Korean reference population. These findings underscores the urgency for enhanced scrutiny over working conditions and protective equipment provision, coupled with efforts to improve healthcare accessibility and worker education. 
		                        		
		                        		
		                        		
		                        	
            
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