1.Contractile effect of ultraviolet in isolated rat thoracic aorta.
Seung Ho KWAK ; Bong Su RYU ; Hwan Ig KIM ; Sam Yong LEE ; Paek Hyeon CHO
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1993;20(2):248-257
No abstract available.
Animals
;
Aorta, Thoracic*
;
Rats*
2.A clinical review of the polydactyly.
Bong Su RYU ; Seung Ho KWAK ; Hwan Ik KIM ; Sam Yong LEE ; Peak Hyeon CHO
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1993;20(4):724-733
No abstract available.
Polydactyly*
3.The Work Experiences of Emergency Room Nurses during the COVID-19 Pandemic
Yong Hwan HYEON ; Young Hee CHAE
Journal of Korean Clinical Nursing Research 2021;27(3):221-232
Purpose:
The purpose of this study was to explore emergency room nurse's work experiences during the COVID-19 pandemic.
Methods:
Data were collected from 15 registered nurses working in the emergency room between October, 10th and December 15th, 2020, through focus group interviews and in depth interviews.Collected data were analyzed using Colaizzi's phenomenological method.
Results:
The study derived four categories and eight themes. The four categories are ‘sense of cringing with fear’, ‘nursing in chaotic situation’, ‘lonely struggles’, and ‘career growth as a nurse’. Emergency room nurses experienced fear and confusion in the COVID-19 pandemic, but overcame the crisis and had positive experiences of professional growth as a nurse.
Conclusion
To protect emergency room nurses from infectious disease and improve their professional quality of life during the COVID-19 pandemic appropriate education and healthcare resource should be provided. It is necessary to reflect clinical worker's opinions and improve the delivery system of guideline to reduce confusion in the field and develop practical infectious disease control guideline. Furthermore, better working conditions, appropriate rewards and social and mental support should be provided for nurses in emergency room.
4.Cancer Care Facilities Nurses Experience of Infection Control
Yong Hwan HYEON ; Kyoung Ja MOON
Journal of Korean Academy of Fundamental Nursing 2020;27(1):12-28
Purpose:
The purpose of this study was to explore cancer center nurses experience of infection control.
Methods:
From March 26 to 2019 to May 1, 2019 data were collected through focus group interviews and in-depth interviews. Data collected though interviews and field notes were analyzed using Colaizzi's phenomenological method. Participants were 12 registered nurses and 2 head nurses.
Results:
Fifteen themes emerged from four themes clusters. 1) Encountering barriers to infection control. 2) Infection control is still difficult. 3) Complaints about Infection Control Department exist. 4) Need to consider strategies for improving infection control.
Conclusion
The results of the study indicate that in order to facilitate infection control and increase the compliance rate of the guidelines, it is necessary to develop a program to increase the individual's competency associated with infection control and the elimination of negative factors. Further, mediation of external factors related to the hospital environment is necessary.
5.Living experiences of older patients with cancer amid the COVID-19 pandemic: A phenomenological study
Yong Hwan HYEON ; Kyoung Ja MOON
Journal of Korean Gerontological Nursing 2024;26(1):54-65
Patients with cancer experience psychological and social problems; in particular, older patients with cancer face many difficulties during the cancer treatment process owing to aging and underlying diseases. Furthermore, the lives of individuals may be impacted by the COVID-19 pandemic. Therefore, the purpose of this study is to describe the experiences of older patients with cancer during the cancer diagnosis and treatment process amid the COVID-19 pandemic. Methods: This study employed a qualitative, descriptive phenomenological approach to explore and analyze the experiences of the participants. The participants in this study consisted of patients aged over 65 who were diagnosed with cancer, and data were collected from May 4 to June 30, 2022 through in-depth individual interviews. The collected data were analyzed using Giorgi’s phenomenological analysis. Results: Participants were six older patients with cancer with an average age of 69.66 years. Five theme clusters and 15 themes were generated. The theme clusters were “psychological adaptation to cancer diagnosis,” “receiving social and medical support,” “difficulty in the treatment process,” “fear of the COVID-19 pandemic,” and “living through difficulties.” Conclusion: This study revealed that older patients with cancer demonstrated a unique psychology about how to accept the shock of the diagnosis and the resulting coping patterns and feelings of depression. Additionally, it was verified that older patients with cancer, susceptible to infections due to their advanced age and weakened immunity, also face an increased vulnerability to COVID-19. Therefore, a support system tailored to the characteristics of older patients with cancer should be established.
6.Living experiences of older patients with cancer amid the COVID-19 pandemic: A phenomenological study
Yong Hwan HYEON ; Kyoung Ja MOON
Journal of Korean Gerontological Nursing 2024;26(1):54-65
Patients with cancer experience psychological and social problems; in particular, older patients with cancer face many difficulties during the cancer treatment process owing to aging and underlying diseases. Furthermore, the lives of individuals may be impacted by the COVID-19 pandemic. Therefore, the purpose of this study is to describe the experiences of older patients with cancer during the cancer diagnosis and treatment process amid the COVID-19 pandemic. Methods: This study employed a qualitative, descriptive phenomenological approach to explore and analyze the experiences of the participants. The participants in this study consisted of patients aged over 65 who were diagnosed with cancer, and data were collected from May 4 to June 30, 2022 through in-depth individual interviews. The collected data were analyzed using Giorgi’s phenomenological analysis. Results: Participants were six older patients with cancer with an average age of 69.66 years. Five theme clusters and 15 themes were generated. The theme clusters were “psychological adaptation to cancer diagnosis,” “receiving social and medical support,” “difficulty in the treatment process,” “fear of the COVID-19 pandemic,” and “living through difficulties.” Conclusion: This study revealed that older patients with cancer demonstrated a unique psychology about how to accept the shock of the diagnosis and the resulting coping patterns and feelings of depression. Additionally, it was verified that older patients with cancer, susceptible to infections due to their advanced age and weakened immunity, also face an increased vulnerability to COVID-19. Therefore, a support system tailored to the characteristics of older patients with cancer should be established.
7.Living experiences of older patients with cancer amid the COVID-19 pandemic: A phenomenological study
Yong Hwan HYEON ; Kyoung Ja MOON
Journal of Korean Gerontological Nursing 2024;26(1):54-65
Patients with cancer experience psychological and social problems; in particular, older patients with cancer face many difficulties during the cancer treatment process owing to aging and underlying diseases. Furthermore, the lives of individuals may be impacted by the COVID-19 pandemic. Therefore, the purpose of this study is to describe the experiences of older patients with cancer during the cancer diagnosis and treatment process amid the COVID-19 pandemic. Methods: This study employed a qualitative, descriptive phenomenological approach to explore and analyze the experiences of the participants. The participants in this study consisted of patients aged over 65 who were diagnosed with cancer, and data were collected from May 4 to June 30, 2022 through in-depth individual interviews. The collected data were analyzed using Giorgi’s phenomenological analysis. Results: Participants were six older patients with cancer with an average age of 69.66 years. Five theme clusters and 15 themes were generated. The theme clusters were “psychological adaptation to cancer diagnosis,” “receiving social and medical support,” “difficulty in the treatment process,” “fear of the COVID-19 pandemic,” and “living through difficulties.” Conclusion: This study revealed that older patients with cancer demonstrated a unique psychology about how to accept the shock of the diagnosis and the resulting coping patterns and feelings of depression. Additionally, it was verified that older patients with cancer, susceptible to infections due to their advanced age and weakened immunity, also face an increased vulnerability to COVID-19. Therefore, a support system tailored to the characteristics of older patients with cancer should be established.
8.Living experiences of older patients with cancer amid the COVID-19 pandemic: A phenomenological study
Yong Hwan HYEON ; Kyoung Ja MOON
Journal of Korean Gerontological Nursing 2024;26(1):54-65
Patients with cancer experience psychological and social problems; in particular, older patients with cancer face many difficulties during the cancer treatment process owing to aging and underlying diseases. Furthermore, the lives of individuals may be impacted by the COVID-19 pandemic. Therefore, the purpose of this study is to describe the experiences of older patients with cancer during the cancer diagnosis and treatment process amid the COVID-19 pandemic. Methods: This study employed a qualitative, descriptive phenomenological approach to explore and analyze the experiences of the participants. The participants in this study consisted of patients aged over 65 who were diagnosed with cancer, and data were collected from May 4 to June 30, 2022 through in-depth individual interviews. The collected data were analyzed using Giorgi’s phenomenological analysis. Results: Participants were six older patients with cancer with an average age of 69.66 years. Five theme clusters and 15 themes were generated. The theme clusters were “psychological adaptation to cancer diagnosis,” “receiving social and medical support,” “difficulty in the treatment process,” “fear of the COVID-19 pandemic,” and “living through difficulties.” Conclusion: This study revealed that older patients with cancer demonstrated a unique psychology about how to accept the shock of the diagnosis and the resulting coping patterns and feelings of depression. Additionally, it was verified that older patients with cancer, susceptible to infections due to their advanced age and weakened immunity, also face an increased vulnerability to COVID-19. Therefore, a support system tailored to the characteristics of older patients with cancer should be established.
9.Improved Bioethanol Production Using Activated Carbon-treated Acid Hydrolysate from Corn Hull in Pachysolen tannophilus.
Hyeon Beom SEO ; Seungseop KIM ; Hyeon Yong LEE ; Kyung Hwan JUNG
Mycobiology 2009;37(2):133-140
To optimally convert corn hull, a byproduct from corn processing, into bioethanol using Pachysolen tannophlius, we investigated the optimal conditions for hydrolysis and removal of toxic substances in the hydrolysate via activated carbon treatment as well as the effects of this detoxification process on the kinetic parameters of bioethanol production. Maximum monosaccharide concentrations were obtained in hydrolysates in which 20 g of corn hull was hydrolyzed in 4% (v/v) H2SO4. Activated carbon treatment removed 92.3% of phenolic compounds from the hydrolysate. When untreated hydrolysate was used, the monosaccharides were not completely consumed, even at 480 h of culture. When activated carbon-treated hydrolysate was used, the monosaccharides were mostly consumed at 192 h of culture. In particular, when activated carbon-treated hydrolysate was used, bioethanol productivity (P) and specific bioethanol production rate (Qp) were 2.4 times and 3.4 times greater, respectively, compared to untreated hydrolysate. This was due to sustained bioethanol production during the period of xylose/arabinose utilization, which occurred only when activated carbon-treated hydrolysate was used.
Carbon
;
Efficiency
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Hydrolysis
;
Monosaccharides
;
Phenol
;
Zea mays
10.Clinical Usefulness of Otoacoustic Emission Sum in Sudden Sensorineural Hearing Loss Patients.
Yong Hyeon NO ; Gwan CHOI ; Chan Woo PARK ; Jae Hwan KWON ; Hwan Ho LEE
Korean Journal of Otolaryngology - Head and Neck Surgery 2013;56(4):212-216
BACKGROUND AND OBJECTIVES: Sudden hearing loss remain a controversial issue with respect to its prognostic indicators. In a recent study, the change in distortion product otoacoustic emission (DPOAE) has been shown to provide useful information about its prognosis. The purpose of this study is to evaluate the relationship between the changes of DPOAE and hearing improvement in sudden deafness patients. SUBJECTS AND METHOD: Sixty-one patients underwent pure tone audiometry (PTA) and DPOAE on their first hospital day; among them 35 patients underwent DPOAE after 2 weeks. These patients were divided into mild (< or =40 dB) group, moderate to moderately severe (41-70 dB) group and severe (> or =71 dB) group according to their initial hearing thresholds. RESULTS: Of the 22 patients in the moderate to severe group, 11 patients showed a DPOAE response and 5 patients (45%) showed hearing improved. In 11 non-DPOAE response patients, 4 patients (36.4%) had improved. We compared PTA and OAE sum gap results by analyzing 35 patient's initial thresholds with those measured 2 weeks after the therapy. The correlation coefficient between the two group was 0.547 (p<0.05). CONCLUSION: The results show that OAE sum is an efficient and non-invasive objective method and that it can be used to monitor the effects of treatment in sudden hearing loss patients.
Audiometry
;
Hearing
;
Hearing Loss, Sensorineural
;
Hearing Loss, Sudden
;
Humans
;
Organothiophosphorus Compounds
;
Prognosis