1.Changes in the Circadian Rhythm of High-Frequency Heart Rate Variability Associated With Depression
Deokjong LEE ; Changho HAN ; Hyungjun KIM ; Jae-Sun UHM ; Dukyong YOON ; Jin Young PARK
Journal of Korean Medical Science 2023;38(19):e142-
Background:
Heart rate variability (HRV) extracted from electrocardiogram measured for a short period during a resting state is clinically used as a bio-signal reflecting the emotional state. However, as interest in wearable devices increases, greater attention is being paid to HRV extracted from long-term electrocardiogram, which may contain additional clinical information. The purpose of this study was to examine the characteristics of HRV parameters extracted through long-term electrocardiogram and explore the differences between participants with and without depression and anxiety symptoms.
Methods:
Long-term electrocardiogram was acquired from 354 adults with no psychiatric history who underwent Holter monitoring. Evening and nighttime HRV and the ratio of nighttime-to-evening HRV were compared between 127 participants with depressive symptoms and 227 participants without depressive symptoms. Comparisons were also made between participants with and without anxiety symptoms.
Results:
Absolute values of HRV parameters did not differ between groups based on the presence of depressive or anxiety symptoms. Overall, HRV parameters increased at nighttime compared to evening. Participants with depressive symptoms showed a significantly higher nighttime-to-evening ratio of high-frequency HRV than participants without depressive symptoms. The nighttime-to-evening ratio of HRV parameters did not show a significant difference depending on the presence of anxiety symptoms.
Conclusion
HRV extracted through long-term electrocardiogram showed circadian rhythm. Depression may be associated with changes in the circadian rhythm of parasympathetic tone.
2.Change of Therapeutic Response Classification According to Recombinant Human Thyrotropin‑Stimulated Thyroglobulin Measured at Different Time Points in Papillary Thyroid Carcinoma
Jang Bae MOON ; Subin JEON ; Ki Seong PARK ; Su Woong YOO ; Sae‑Ryung KANG ; Sang‑Geon CHO ; Jahae KIM ; Changho LEE ; Ho‑Chun SONG ; Jung‑Joon MIN ; Hee‑Seung BOM ; Seong Young KWON
Nuclear Medicine and Molecular Imaging 2021;55(3):116-122
Purpose:
We investigated whether response classification after total thyroidectomy and radioactive iodine (RAI) therapy could be affected by serum levels of recombinant human thyrotropin (rhTSH)-stimulated thyroglobulin (Tg) measured at different time points in a follow-up of patients with papillary thyroid carcinoma (PTC).
Methods:
A total of 147 PTC patients underwent serum Tg measurement for response assessment 6 to 24 months after the first RAI therapy. Serum Tg levels were measured at 24 h (D1Tg) and 48–72 h (D2-3Tg) after the 2nd injection of rhTSH. Responses were classified into three categories based on serum Tg corresponding to the excellent response (ER-Tg), indeterminate response (IR-Tg), and biochemical incomplete response (BIR-Tg). The distribution pattern of response classification based on serum Tg at different time points (D1Tg vs. D2-3Tg) was compared.
Results:
Serum D2-3Tg level was higher than D1Tg level (0.339 ng/mL vs. 0.239 ng/mL, P < 0.001). The distribution of response categories was not significantly different between D1Tg-based and D2-3Tg-based classification. However, 8 of 103 (7.8%) patients and 3 of 40 (7.5%) patients initially categorized as ER-Tg and IR-Tg based on D1Tg, respectively, were reclassified to IR-Tg and BIR-Tg based on D2-3Tg, respectively. The optimal cutoff values of D1Tg for the change of response categories were 0.557 ng/mL (from ER-Tg to IR-Tg) and 6.845 ng/mL (from IR-Tg to BIR-Tg).
Conclusion
D1Tg measurement was sufficient to assess the therapeutic response in most patients with low level of D1Tg. Nevertheless, D2-3Tg measurement was still necessary in the patients with D1Tg higher than a certain level as response classification based on D2-3Tg could change.
3.Bladder injury with vesicocutaneous fistula following acupuncture: a case report
In Hwan YEO ; Dong Eun LEE ; Changho KIM ; Yun Jeong KIM ; Jun Seok SEO
Journal of the Korean Society of Emergency Medicine 2021;32(5):471-475
Acupuncture is globally practiced extensively, especially in Northeast Asian countries. We present a case of bladder injury with vesicocutaneous fistula (VCF) subsequent to acupuncture treatment on the lower abdomen. We believe that no similar case has been reported in previous literature. A 54-year-old woman was admitted to our emergency department, complaining of lower abdominal pain with erythema, after undergoing acupuncture. Physical examination revealed swelling with erythema and slight pus-like discharges in the lower abdomen, with accompanying tenderness over the area of the swelling. An abdominal computed tomography showed evidence of bladder injury with VCF and abscess. Considering the underlying disease and the risk of surgical treatment, the patient was successfully treated with percutaneous abscess drainage and an indwelling urinary catheter. Considering the outcome of this case, we recommend that practitioners need to perform acupuncture treatment with sufficient anatomical knowledge and proper technique, to reduce the possibility of subsequent complications.
4.What Is Fecal Incontinence That Urologists Need to Know?
HongWook KIM ; Jisung SHIM ; Yumi SEO ; Changho LEE ; Youngseop CHANG
International Neurourology Journal 2021;25(1):23-33
Fecal incontinence (FI) undoubtedly reduces quality of life and adversely affects the social life of the affected individual. FI has a higher prevalence with age and has an equivalent prevalence to urinary incontinence in patients with genitourinary disease, but is often not confirmed in these cases. A thorough investigation is needed to diagnose FI, with the common etiology of this condition in mind, and several questionnaires can be used to identify symptoms. The physical examination contains digital rectal examination carries out to identify the patient’s condition. Ultrasound, colonoscopy, and rectum pressure test can be performed. Patients educated in diet-related issues, bowel movements, and defecation mechanism. Nonoperative options such as diet control and Kegel exercise should be performed at first. Surgical treatment of FI is considered when conservative management and oral medications produce no improvement. Surgical options include less invasive procedures like bulking agent injections, and more involved approaches from sacral nerve stimulation to invasive direct sphincter repair and artificial bowel sphincter insertion. Good outcomes in FI cases have also recently been reported for barrier devices.
5.Anticoagulation versus Antiplatelet Therapy after Ischemic Stroke in the Patients with Atrial Fibrillation and Cerebral Microbleeds
Kang-Ho CHOI ; Ja-Hae KIM ; Changho LEE ; Jae-Myung KIM ; Kyung-Wook KANG ; Joon-Tae KIM ; Seong-Min CHOI ; Man-Seok PARK ; Ki-Hyun CHO
Journal of Stroke 2021;23(2):273-276
6.What Is Fecal Incontinence That Urologists Need to Know?
HongWook KIM ; Jisung SHIM ; Yumi SEO ; Changho LEE ; Youngseop CHANG
International Neurourology Journal 2021;25(1):23-33
Fecal incontinence (FI) undoubtedly reduces quality of life and adversely affects the social life of the affected individual. FI has a higher prevalence with age and has an equivalent prevalence to urinary incontinence in patients with genitourinary disease, but is often not confirmed in these cases. A thorough investigation is needed to diagnose FI, with the common etiology of this condition in mind, and several questionnaires can be used to identify symptoms. The physical examination contains digital rectal examination carries out to identify the patient’s condition. Ultrasound, colonoscopy, and rectum pressure test can be performed. Patients educated in diet-related issues, bowel movements, and defecation mechanism. Nonoperative options such as diet control and Kegel exercise should be performed at first. Surgical treatment of FI is considered when conservative management and oral medications produce no improvement. Surgical options include less invasive procedures like bulking agent injections, and more involved approaches from sacral nerve stimulation to invasive direct sphincter repair and artificial bowel sphincter insertion. Good outcomes in FI cases have also recently been reported for barrier devices.
7.Anticoagulation versus Antiplatelet Therapy after Ischemic Stroke in the Patients with Atrial Fibrillation and Cerebral Microbleeds
Kang-Ho CHOI ; Ja-Hae KIM ; Changho LEE ; Jae-Myung KIM ; Kyung-Wook KANG ; Joon-Tae KIM ; Seong-Min CHOI ; Man-Seok PARK ; Ki-Hyun CHO
Journal of Stroke 2021;23(2):273-276
8.Revised Triage and Surveillance Protocols for Temporary Emergency Department Closures in Tertiary Hospitals as a Response to COVID-19 Crisis in Daegu Metropolitan City
Han Sol CHUNG ; Dong Eun LEE ; Jong Kun KIM ; In Hwan YEO ; Changho KIM ; Jungbae PARK ; Kang Suk SEO ; Sin-Yul PARK ; Jung Ho KIM ; Gyunmoo KIM ; Suk Hee LEE ; Jeon Jae CHEON ; Yang Hun KIM
Journal of Korean Medical Science 2020;35(19):e189-
Background:
When an emergency-care patient is diagnosed with an emerging infectious disease, hospitals in Korea may temporarily close their emergency departments (EDs) to prevent nosocomial transmission. Since February 2020, multiple, consecutive ED closures have occurred due to the coronavirus disease 2019 (COVID-19) crisis in Daegu. However, sudden ED closures are in contravention of laws for the provision of emergency medical care that enable the public to avail prompt, appropriate, and 24-hour emergency medical care. Therefore, this study ascertained the vulnerability of the ED at tertiary hospitals in Daegu with regard to the current standards. A revised triage and surveillance protocol has been proposed to tackle the current crisis.
Methods:
This study was retrospectively conducted at 6 level 1 or 2 EDs in a metropolitan city where ED closure due to COVID-19 occurred from February 18 to March 26, 2020. The present status of ED closure and patient characteristics and findings from chest radiography and laboratory investigations were assessed. Based on the experience from repeated ED closures and the modified systems that are currently used in EDs, revised triage and surveillance protocols have been developed and proposed.
Results:
During the study period, 6 level 1 or 2 emergency rooms included in the study were shut down 27 times for 769 hours. Thirty-one confirmed COVID-19 cases, of whom 7 died, were associated with the incidence of ED closure. Typical patient presentation with respiratory symptoms of COVID-19 was seen in less than 50% of patients, whereas abnormal findings on chest imaging investigations were detected in 93.5% of the study population. The chest radiography facility, resuscitation rooms, and triage area were moved to locations outside the ED, and a new surveillance protocol was applied to determine the factors warranting quarantine, including symptoms, chest radiographic findings, and exposure to a source of infection. The incidence of ED closures decreased after the implementation of the revised triage and surveillance protocols.
Conclusion
Triage screening by emergency physicians and surveillance protocols with an externally located chest imaging facility were effective in the early isolation of COVID-19 patients. In future outbreaks of emerging infectious diseases, efforts should be focused toward the provision of continued ED treatment with the implementation of revised triage and surveillance protocols.
9.Breaking the Gender Gap: A Two-part Observational Study of the Gender Disparity Among Korean Academic Emergency Physicians
Journal of Preventive Medicine and Public Health 2020;53(5):362-370
Objectives:
Despite greater access to training positions and the presence of more women in emergency medicine, it has remained a men-dominated field. This study aims to identify the key issues causing the gender gap in Korea and establish measures to overcome them.
Methods:
Using the annual statistical reports of the National Emergency Medical Center and data published on the Korean Society of Emergency Medicine website, cases that listed the current status and positions of members in its organization and its committees were analyzed. Secondary analysis was conducted using data from the 2015 Korean Society of Emergency Survey that included physicians’ demographics, academic ranking, years of experience, clinical work hours, training and board certification, core faculty status, position, and salaries.
Results:
As of September 2019, women account for only 12.7% of the total number of emergency physicians (EP) in Korea; of 119 chair/ vice‐chair academic positions, women represented only 9.2%. Women EP were more often assistant professors and fellowship-trained, with fewer in core faculty. However, they worked the same numbers of clinical hours as their men counterparts. The median annual salary of women EP was less than that of men EP after adjusting for academic hospital rank, clinical hours, and core faculty status.
Conclusions
A gender gap still exists among Korean EP, and women earn less than men regardless of their rank, clinical hours, or training. Future studies should evaluate more data and develop system-wide practices to eliminate gender disparities.
10.Clinical Impact of F-18 FDG PET-CT on Biopsy Site Selection in Patients with Suspected Bone Metastasis of Unknown Primary Site
Su Woong YOO ; Md. Sunny Anam CHOWDHURY ; Subin JEON ; Sae-Ryung KANG ; Changho LEE ; Zeenat JABIN ; Jahae KIM ; Sang-Geon CHO ; Ho-Chun SONG ; Hee-Seung BOM ; Jung-Joon MIN ; Seong Young KWON
Nuclear Medicine and Molecular Imaging 2020;54(4):192-198
Purpose:
We investigated the clinical role of F-18 fluorodeoxyglucose (FDG) positron emission tomography-computed tomography(PET-CT) in the identification of the primary site and the selection of the optimal biopsy site in patients with suspectedbone metastasis of unknown primary site.
Methods:
The patients with suspected bone metastasis who underwent PET-CT for evaluation of primary site were enrolled inthis study. The primary sites were identified by the histopathologic or imaging studies and were classified according to the FDGuptake positivity of the primary site. To evaluate the guiding capability of PET-CT in biopsy site selection, we statisticallyanalyzed whether the biopsy site could be affected according to the presence of extra-skeletal FDG uptake.
Results:
Among 74 enrolled patients, 51 patients had a metastatic bone disease. The primary site was identified in 48 of 51patients (94.1%). Forty-six patients were eligible to test the association of clinical choice of biopsy site with PET positivity ofextra-skeletal lesion. The extra-skeletal biopsies were done in 42 out of 43 patients with positive extra-skeletal uptake lesions.Bone biopsies were inevitably performed in the other three patients without extra-skeletal uptake lesions. The association cameout to be significant (Fisher’s exact test, P< 0.001).
Conclusion
F-18 FDG PET-CT significantly contributed not only to identify the primary site but also to suggest optimal biopsysites in patients with suspected bone metastasis.

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