Surface ultrastructure of Parvatrema timondavidi developmental stages was studied using a scanning electron microscope. The metacercariae were collected from the marine clam, Tapes philippinarum, and juvenile and worms adult were recovered at 1, 2, 3, and 7 days after experimental infection of mice. The metacercariae had a large oral sucker and characteristic lateral projections. Around the lip of the oral sucker many type I and type II sensory papillae were observed, and type III papillae were located symmetrically on the medial side of the lateral projection. Numerous type I papillae were grouped around the genital pore. The tegumental spines were distributed over the worm surface except the lip of the sucker and genital pore. The 1-day old worm had a well-developed ventral sucker, with 6 type II sensory papillae on its outer surface and another 6 type I papillae on the inner side, Two small type I papillae were seen on the anterior side of the ventral sucker. The genital pore was and 15 type I papillae were grouped around it. The 2-, 3-, and 7-day worms revealed that as they grew to be adults, the spine tips became multipointed, the genital pore formed a genital atrium, and the cytoplasmic process became well differentiated. In 2- and 3-day worms 10 type II papillae encircling the lip of the oral sucker, and additional 4 papilled at the dorsal side of 4 dorsal type II papillae were a characteristic feature. The distribution pattern of sensory papillae around the oral sucker and genital pore, and 2 type I papillae on the anterior side of the ventra sucker, was so peculiar in P. timondavidi, that they seem to be useful keys for taxonomic differentiation from other gymnophallids.
parasitology-helminth-trematoda ; Parvatrema timondavidi ; surface ultrastructure ; scanning EM, sensory papilla ; spine ; cytoplasmic process

The COVID-19 curve seesawed and reached the fourth pandemic in July 2021. Since the first three waves, the focus has been on achieving herd immunity through vaccination while a lot of manpower is used for quarantine. However, we have not been able to prevent the fourth wave. The causes are thought to be related to people who doubt the safety of the vaccine and refuse it or violate quarantine guidelines such as social distancing. This study examined guidelines for preventing and controlling COVID-19, the accuracy of vaccination-related information, and described quarantine measures including for those who completed vaccination. In conclusion, prevention and vaccination are the most effective countermeasures against COVID-19. We recommend people vaccination with self-quarantine. Also, it is necessary to make large investments to protect and support nurses in future pandemics.

The COVID-19 curve seesawed and reached the fourth pandemic in July 2021. Since the first three waves, the focus has been on achieving herd immunity through vaccination while a lot of manpower is used for quarantine. However, we have not been able to prevent the fourth wave. The causes are thought to be related to people who doubt the safety of the vaccine and refuse it or violate quarantine guidelines such as social distancing. This study examined guidelines for preventing and controlling COVID-19, the accuracy of vaccination-related information, and described quarantine measures including for those who completed vaccination. In conclusion, prevention and vaccination are the most effective countermeasures against COVID-19. We recommend people vaccination with self-quarantine. Also, it is necessary to make large investments to protect and support nurses in future pandemics.

PURPOSE: The aim of this study was to understand and describe difficulties and needs experienced by head nurses in the clinical practice education of nursing students. METHODS: A qualitative descriptive method was employed. A convenience sampling method was used to recruit participants from four hospitals in South Korea. Twenty-one head nurses participated in the first interview and 17 of them participated in the second interview. Data were collected through two in-depth interviews and field notes were written. Qualitative content analysis method was utilized for data analysis using ATLAS.ti 6.2 software. RESULTS: Thirty-one codes and twelve categories were identified. Four themes emerged from data analysis, which included ‘too many tasks’, ‘limitations of student education’, ‘many differences’, and ‘lack of support and resources.’ CONCLUSION: This qualitative study described head nurses' many difficulties and needs in the clinical practice education of nursing students. The results of this study provide valuable understanding and knowledge of head nurses' experiences in students' clinical education, which leads to improvement of the quality of clinical education for nursing students.
Education* ; Head* ; Humans ; Korea ; Methods ; Nursing* ; Nursing, Supervisory ; Qualitative Research* ; Statistics as Topic ; Students, Nursing*

PURPOSE: The purpose of this study was to examine current status of somatic symptoms of late school-aged children using the school health clinic and to investigate the influence of perceived attachment security and social support on their somatic symptoms. METHODS: For this descriptive study, self-report questionnaires were completed by fifth and sixth graders attending 'A' elementary school in Gyeonggi-do. Data from 216 students were included. Data analysis included descriptive statistics, t-test, ANOVA, Pearson correlation coefficient, and multiple regression analysis. RESULTS: Most frequent somatic symptoms were headache, fainting, backache, numbness in a body part, and muscle ache in that order. More frequent somatic symptoms were reported by girls, students who recognized their family SES as low, students who used school health clinic often and students who were dissatisfied with school life. Somatic symptom showed negative correlations with attachment stability and perceived social support from family and teachers. In the regression analysis, the variables; low attachment stability, female gender, and low satisfaction with school affected more frequent somatic symptoms. CONCLUSION: Careful monitoring of late school-aged children expressing frequent somatic symptoms is required. Intervention programs to improve attachment security and satisfaction with school should be developed for school children, especially girls, presenting with somatic symptoms.
Back Pain ; Child* ; Female ; Gyeonggi-do ; Headache ; Humans ; Hypesthesia ; Parent-Child Relations ; Psychosomatic Medicine ; School Health Services* ; Statistics as Topic ; Syncope

No abstract available.
Male ; Penis* ; Xanthogranuloma, Juvenile*

No abstract available.

Aneurysm of the internal carotid artery is a rare disease and is known to be associated with congenital arterial anomalies such as neurofibromatosis type I (NF-I). NF-I is an autosomal dominant neurocutaneous disorder characterized by a variety of manifestations that involve the central and peripheral nervous systems, skin, vascular system, and skeleton. In particular, the involvement of vascular abnormalities in NF-I is well known. Any vessel may be affected by this condition, although the renal artery is most frequently involved. The vascular abnormality can be occlusive or an aneurysmal degenerative change. Therefore, symptomatic presentations might assume an indolent pathophysiologic course such as hypertension, or manifest as a catastrophic event such as arterial rupture that could result in sudden death. We report a rare autopsy case of an aneurysmal rupture of the internal carotid artery in a woman with suspected NF-I, who collapsed in her home.
Aneurysm ; Autopsy ; Carotid Artery, Internal ; Death, Sudden ; Female ; Glycosaminoglycans ; Humans ; Hypertension ; Neurocutaneous Syndromes ; Neurofibromatoses ; Neurofibromatosis 1 ; Peripheral Nervous System ; Rare Diseases ; Renal Artery ; Rupture ; Skeleton ; Skin

PURPOSE:Recent studies proposed that polyunsaturated fatty acids (PUFA) of the omega6 series (linoleic acid, LA) compared to the omega 3 series (linolenic acid, LNA) may be a potent promoters of adipogenesis during the gestation/lactation period. Increased ratio of LA/LNA may stimulate adipose tissue development during gestation/lactation period and may subsequently lead to chilhood obesity. The purpose of this study is to evaluate fatty acids composition of the breast milk in Korean lactating women and to analyze the relationship between LA/LNA and the body weight gain of the infants. METHODS:Fifty eight healthy postpartum lactating women and their healthy 58 breast feeding infants were studied. At 11.3+/-3.9 days of postpartum, breast milk were taken and analyzed by gas-liquid chromatography with one-step methylation method. RESULTS:The total fat contents in breast milk were 3.2+/-1.3%. The total fat contents in breast milk were not related to maternal BMI or Kaup index of infants. The percentage of PUFA was 24.9+/-6.0%. Among these PUFA, the percentage of LA and LNA was 20.3+/-5.8% and 2.2+/-0.8%, respectively. LA/ LNA ratio was 10.2+/-2.5. There were no significant correlations between LA/LNA ratio and infant weight gain during the first 2 months of life. CONCLUSION: Short term weight gain of infant was not related to the LA/LNA ratio in the breast milk. Further studies on the long term effects on fat percent and body weight of infants would be needed.
Adipogenesis ; Adipose Tissue ; alpha-Linolenic Acid ; Body Weight* ; Breast Feeding ; Breast* ; Chromatography, Gas ; Fatty Acids* ; Fatty Acids, Unsaturated ; Female ; Humans ; Infant* ; Linoleic Acid ; Methylation ; Milk, Human* ; Obesity ; Postpartum Period ; Weight Gain

The rectal prolapse syndome is a disease entity includes rectocele and rectal prolapse, presenting prolapse(procidentia) of rectum. In rectocele, rectum is prolapsed anteriorly into the vagina, whereas in procidentia, inferiorly out of the anus. This study was aimed at analyzing pathogenesis and adequacy of surgical treatment in rectocele and rectal prolapse. Twenty-one patients with rectocele and 18 patients with rectal prolapse were assessed pre- and post-operatively in respect to symptoms and signs, pathogenesis, defecography, and manometry. In analysis of symptoms and sings, constipation was the commonest in both diseases(86% of rectocele and 67% of rectal prolapse) and incontinence was not infrequently found in both diseases as well(14% of rectocele and 33% of rectal prolapse). In analysis of the underlying causes, two patients with rectal prolapse had prolapse from childhood. Defecography showed anorectal angle of rectal prolapse in rest and push period. They were significantly wider than those of rectocele(p<0.05). The perineal descent of rectal prolapse was longer than that of rectocele. In analysis of the associated factors, average number of delivery was more than three times in both diseases(3.5 of rectocele and 5.1 of rectal prolapse). We could easily find previous operation history in both diseases. Among them, hysterectomy was the most frequent, especially in patients with rectocele. The hemorrhoids was associated more common in rectocele than in rectal prolapse(p<0.05). Preoperative maximal resting pressure of rectal prolapse was more significantly decreased than that of rectocele(p<0.05). The sensation of fullness was significantly decreased in patients with rectal prolapse postoperatively(p<0.05). Patients with rectocele underwent levator plication by transrectal or vaginal approach. Patients with rectal prolapse underwent posterior rectopexy in 11 patients, resection and rectopexy in 3 patients, Delorme's operation and Thiersch operation in 2 patients each. Constipation was significantly improved in patients with rectocele postoperatively(p<0.05). Incontinence was markedly improved in patients with rectal prolapse postoperatively(p<0.05). At the interview about subjective improvement of symptom, 95% of patients with rectocele and 89% of patients with rectal prolapse were satisfied with surgery. In conclusion, rectocele and rectal prolapse can be categorized as rectal prolapse syndrome because both diseases have anatomical derangements caused by similar pathogenesis such as altered bowel habits, anatomical factor, delivery, past history of hysterectomy, and hemorrhoids. Levator plication and posterior rectopexy seem to be useful surgical methods of anatomical repair for the respective disease.
Anal Canal ; Constipation ; Defecography ; Hemorrhoids ; Humans ; Hysterectomy ; Manometry ; Prolapse ; Rectal Prolapse* ; Rectocele ; Rectum ; Sensation ; Vagina