RESUMEN
Foreign body aspiration (FBA) is a common accident in young children. Undiagnosed and retained foreign bodies may result in severe early and late complications such as asphyxia, pneumonia, atelectasis and bronchiectasis. Moreover, because it can mimic bronchiolitis, croup or asthma, an accurate history and a high index of suspicion are of paramount importance for early diagnosis. With our experience on bronchial FBA initially misdiagnosed as acute bronchiolitis, we emphasize that a minute radiological finding should not be neglected and a repeat chest radiograph may be helpful when the initial study shows normal findings. Multidetector computed tomography is a very useful noninvasive diagnostic modality for FBA.
Asunto(s)
Niño , Humanos , Asfixia , Asma , Bronquios , Bronquiectasia , Bronquiolitis , Crup , Diagnóstico Precoz , Cuerpos Extraños , Tomografía Computarizada Multidetector , Neumonía , Atelectasia Pulmonar , Radiografía TorácicaRESUMEN
The purpose of the present study is to evaluate the biological stability of the zirconia/alumina composite abutment by histologic and radiographic examination in clinical cases. 17 partially edentulous patients (5 men and 12 women, mean age 47) were treated with 37 implants. The implants were placed following the standard two-stage protocol. After a healing period of 3 to 6 months, zirconia/alumina composite abutments were connected. All radiographs were taken using paralleling technique with individually fabricated impression bite block, following insertion of the prosthesis and at the 3-, 6-, 12-month re-examinations. After processing the obtained images, the osseous level was calculated using the digital image in the mesial and distal aspect in each implant. An ANOVA and t-test were used to test for difference between the baseline and 3-, 6-, 12 months re-examinations, and for difference between maxilla and mandible. Differences at P 0.05). The mean bone level reduction in maxilla was 0.33(+/-0.25) at 3-months, 0.36(+/-0.33) at 6-months, 0.56(+/-0.26) at 12-months. And the mean bone level reduction in mandible was 0.35(+/-0.27) at 3-months, 0.49(+/-0.27) at 6-months, 0.68(+/-0.30) at 12-months. No statistical difference in bone level reduction between implants placed in the maxilla and mandible. Histologically, the height of the junctional epithelium was about 2.09 mm. And the width was about 0.51 mm. Scattered fibroblasts and inflammatory cells, and dense collagen network with few vascular structures characterized the portion of connective tissue. The inflammatory cell infiltration was observed just beneath the apical end of junctional epithelium and the area of direct in contact with zirconia/alumina abutment. These results suggest the zirconia/alumina composite abutment can be used in variable intraoral condition, in posterior segment as well as anterior segment without adverse effects.
Asunto(s)
Femenino , Masculino , HumanosRESUMEN
PURPOSE: Pulse wave velocity(PWV) and ankle brachial index(ABI) are not only noninvasive methods used to assess arterial stiffness in adults, but also useful, simple ways to estimate the severity of hypertension, end stage renal disease and atherosclerosis in adults. But there are few studies on PWV and ABI in adolescents and children. In this study, hypertensive adolescents were compared to normal individuals to find out the usefulness of PWV as the index of progress in the disease. METHODS: 413 teenagers were divided into three groups. The first group consisted of adolescents that only had hypertension(Group 1:23 teenagers). The second group consisted of the adolescents who had hypertension with obesity(Group 2:17 teenagers), and the last group was the normal subjects(Group 3:328 teenagers). Weight, height and body mass index were measured. Simultaneous measurements of systolic, diastolic and average blood pressure were obtained from the four extremities. PWV, ABI, ejection time and preejection period were also measured. RESULTS: Right brachial-ankle PWV was significantly higher in both group 1 and group 2 compared with group 3, and significantly higher in group 2 compared with group 1. Likewise, left brachial-ankle PWV also showed significantly higher values in both group 1 and group 2 compared with group 3, and also higher values in group 2 compared with group 1. Positive correlations were found between the systolic, diastolic, average blood pressure and PWV. There were also positive correlations between the blood pressure and weight, body mass index. CONCLUSION: Higher PWV was demonstrated in adolescents with essential hypertension compared to normal subjects. Follow-up study is needed to evaluate the progress.
Asunto(s)
Adolescente , Adulto , Niño , Humanos , Índice Tobillo Braquial , Tobillo , Aterosclerosis , Presión Sanguínea , Índice de Masa Corporal , Peso Corporal , Extremidades , Hipertensión , Fallo Renal Crónico , Análisis de la Onda del Pulso , Rigidez VascularRESUMEN
No abstract available.
RESUMEN
No abstract available.