No abstract available.
Animals ; Nephrons* ; Population Characteristics* ; Rats*

No abstract available.
Acquired Immunodeficiency Syndrome ; HIV ; Humans ; Molluscum Contagiosum*

The ultimate goal of a regenerative pulp treatment strategy is to reconstitute normal tissue continuum at the pulp-dentin border, regulating tissue-specific processes of reparative dentinogenesis. However, little is known about the molecular mechanism of reparative dentinogenesis. The purpose of this study was to investigate the pulpal response after direct pulp capping and pulpotomy with mineral trioxide aggregate (MTA) by histological and immunohistochemical studies. There was continuous reparative dentin bridge formation at 2 weeks after treatment with MTA in both the pulp capping and the pulpotomy groups. The cells in the pulp capping group showed typical odontoblast characteristics, while the cells of reparative dentin in pulpotomy group were round in shape, lost their polarity, organized as a sheet of cells, and trapped in osteodentin-like mineralized tissue. In pulp capping group, upper layer of the reparative dentin showed cell lacunae indicating osteoblastic characteristics, whereas lower layer of the reparative dentin contained predentin and dentinal tubule-like structures as normal dentin. However, there was osteodentin formation in pulpotomy group. DSP protein was expressed at 4 weeks in odontoblasts of pulp capping group, while BSP was expressed at 4 weeks after pulpotomy. These results suggest that two different types of reparative dentin formation, dentin-like and bone-like dentin, may depend on the type and extent of the injury and the effect of the associated defense reaction on the structural and functional integrity at the dentin-pulp border.
Dental Pulp Capping* ; Dentin* ; Dentinogenesis ; Odontoblasts ; Osteoblasts ; Pulpotomy* ; Pemetrexed

The aim of this study was to compare the initial apical file (IAF) length between the mesio-buccanl and mesio-lingual canals of the mandibular molar before and after early coronal flaring. Fifty mandibular molars with complete apical formation and patent foramens were selected. After establishing the initial working length of the buccal and lingual canal of the mesial root using the Root-ZX, radiographs were taken for the working length with a 0.5 mm short of #15 K-file tip just visible at the foramen under a surgical microscope (OPMI 1-FC, Carl Zeiss Co. Germany) at 25X. After early coronal flaring using the K3 file, additional radiographs were taken using the same procedure. The root canal morphology and the difference in working length between the buccal and lingual canals were evaluated. These results show that the difference in the length between the mesio-buccal and mesio-lingual canals of the mandibular molar was < or = 0.5 mm. If one canal has a correct working length for the mesial root of the mandibular molar, it can be used effectively for measuring the working length of another canal when the files are superimposed or loosening. In addition, the measured the working length after early coronal flaring is much more reasonable because the difference in the length between the mesio-buccal and mesio-lingual canals can be reduced.
Dental Pulp Cavity ; Molar*

Intestinal malrotation with midgut volvulus (MV) is a life-threatening surgical emergency. Most events of MV occur in the neonatal period with bilious vomiting, abdominal distension, feeding intolerance, and bloody stools. Neonatal gastric perforation (GP) is a rare and life-threatening condition associated with high mortality. It occurs either in an idiopathic form or in association with gastrointestinal anomalies such as duodenal atresia and MV. The pathogenesis of both MV and GP is related to ischemic change and inflammatory response. MV and GP can lead to morbidities such as sepsis, intestinal ischemia, and organ failure, but not neurologic problems. We herein report the case of a term infant at 5 days after birth, with MV accompanied by GP, who developed periventricular leukomalacia.

Intestinal malrotation with midgut volvulus (MV) is a life-threatening surgical emergency. Most events of MV occur in the neonatal period with bilious vomiting, abdominal distension, feeding intolerance, and bloody stools. Neonatal gastric perforation (GP) is a rare and life-threatening condition associated with high mortality. It occurs either in an idiopathic form or in association with gastrointestinal anomalies such as duodenal atresia and MV. The pathogenesis of both MV and GP is related to ischemic change and inflammatory response. MV and GP can lead to morbidities such as sepsis, intestinal ischemia, and organ failure, but not neurologic problems. We herein report the case of a term infant at 5 days after birth, with MV accompanied by GP, who developed periventricular leukomalacia.

Sclerosing peritonitis is an unusual fibrosing condition predominantly involving the omentum and simulating carcinoma. The presenting signs and symptoms, imaging examination and cancer antigen 125 (CA-125) status in sclerosing peritonitis sometimes resemble those of ovarian cancer. Thus, the possibility of sclerosing peritonitis should be considered in the differential diagnosis of ovarian carcinoma. It may occur idiopathically and secondary to chronic peritoneal dialysis, the use of peritoneovenous shunt, practolol therapy, or in association with ovarian tumors such as ovarian teratoma. We report a case of peritonitis initially suspected as ovarian carcinoma but diagnosed as sclerosing peritonitis associated with teratoma.
Diagnosis, Differential ; Omentum ; Ovarian Neoplasms ; Peritoneal Dialysis ; Peritoneovenous Shunt ; Peritonitis ; Practolol ; Teratoma

The magnification technique has recently become popular in bone radiography, mammography and other diagnostic examination. However, because of the finite size of X-ray focal spot, the magnification influences various imaging properties with resolution, noise and contrast. The purpose of study is to investigate the influence of magnification and focal spot size on digital imaging system using eDQE (effective detective quantum efficiency). Effective DQE is a metric reflecting overall system response including focal spot blur, magnification, scatter and grid response. The adult chest phantom employed in the Food and Drug Administration (FDA) was used to derive eDQE from eMTF (effective modulation transfer function), eNPS (effective noise power spectrum), scatter fraction and transmission fraction. According to results, spatial frequencies that eMTF is 10% with the magnification factor of 1.2, 1.4, 1.6, 1.8 and 2.0 are 2.76, 2.21, 1.78, 1.49 and 1.26 lp/mm respectively using small focal spot. The spatial frequencies that eMTF is 10% with the magnification factor of 1.2, 1.4, 1.6, 1.8 and 2.0 are 2.21, 1.66, 1.25, 0.93 and 0.73 lp/mm respectively using large focal spot. The eMTFs and eDQEs decreases with increasing magnification factor. Although there are no significant differences with focal spot size on eDQE (0), the eDQEs drops more sharply with large focal spot than small focal spot. The magnification imaging can enlarge the small size lesion and improve the contrast due to decrease of effective noise and scatter with air-gap effect. The enlargement of the image size can be helpful for visual detection of small image. However, focal spot blurring caused by finite size of focal spot shows more significant impact on spatial resolution than the improvement of other metrics resulted by magnification effect. Based on these results, appropriate magnification factor and focal spot size should be established to perform magnification imaging with digital radiography system.
Adult ; Humans ; Mammography ; Noise ; Radiographic Image Enhancement ; Thorax ; United States Food and Drug Administration

PURPOSE: This study aimed to understand the essence of experiences of patients and family members during flexible visiting in an intensive care unit (ICU).METHODS: This is a qualitative study using interviews with open ended questions. We used Colaizzi's method of phenomenological interpretation.RESULTS: Flexible visiting in the ICU impacted the patients and their families in various ways. The following categories were extracted from the patients' experiences with flexible visiting: 1) the opportunity to feel the presence of the family and 2) the burden of unrestricted visiting. The following categories were extracted from the families' experiences with flexible visiting: 1) psychological comfort by convenience 2) being aware of health care professionals and critical care nursing in the intensive care unit, and 3) double trouble.CONCLUSIONS: These results showed that flexible visiting in the ICU affected the patients and their families positively and negatively. Therefore, nursing staff need to design psychological and social interventions that address the needs of patients and their families.
Critical Care Nursing ; Delivery of Health Care ; Family Nursing ; Humans ; Intensive Care Units ; Methods ; Nursing Staff ; Visitors to Patients

PURPOSE: The purpose of this study was to develop predictive models for pressure ulcer incidence using electronic health record (EHR) data and to compare their predictive validity performance indicators with that of the Braden Scale used in the study hospital. METHODS: A retrospective case-control study was conducted in a tertiary teaching hospital in Korea. Data of 202 pressure ulcer patients and 14,705 non-pressure ulcer patients admitted between January 2015 and May 2016 were extracted from the EHRs. Three predictive models for pressure ulcer incidence were developed using logistic regression, Cox proportional hazards regression, and decision tree modeling. The predictive validity performance indicators of the three models were compared with those of the Braden Scale. RESULTS: The logistic regression model was most efficient with a high area under the receiver operating characteristics curve (AUC) estimate of 0.97, followed by the decision tree model (AUC 0.95), Cox proportional hazards regression model (AUC 0.95), and the Braden Scale (AUC 0.82). Decreased mobility was the most significant factor in the logistic regression and Cox proportional hazards models, and the endotracheal tube was the most important factor in the decision tree model. CONCLUSION: Predictive validity performance indicators of the Braden Scale were lower than those of the logistic regression, Cox proportional hazards regression, and decision tree models. The models developed in this study can be used to develop a clinical decision support system that automatically assesses risk for pressure ulcers to aid nurses.
Case-Control Studies ; Data Mining ; Decision Support Systems, Clinical ; Decision Trees ; Electronic Health Records ; Hospitals, Teaching ; Humans ; Incidence ; Korea ; Logistic Models ; Patient Safety ; Pressure Ulcer ; Proportional Hazards Models ; Retrospective Studies ; ROC Curve ; Ulcer