2型糖尿病家系非糖尿病一级亲属胰岛素抵抗与胰岛β细胞功能变化5年随访研究

目的：探讨随访2型糖尿病（T2DM）家系非糖尿病一级亲属5年的胰岛素抵抗和胰岛β细胞功能变化。方法：入选2型糖尿病家系非糖尿病一级亲属组（FDR）32例和正常对照组（NC）18例,基线检测了体质量指数、腰臀比、血压、血脂、血糖和空腹胰岛素（FINS）水平。采用稳态模式（HOMA）评价胰岛素抵抗（HOMA-IR）和胰岛β细胞功能（HOMA-β）,5年后进行了相同的随访。结果：5年后FDR组HOMA-IR明显升高（P=0.040）,HOMA-β明显降低（P=0.004）。5年后FDR组与NC组HOMA-IR组间无显著差异（P=0.594）,HOMA-β明显降低（P=0.000）。多元逐步回归分析显示,FINS、空腹血糖（FBG）、高密度脂蛋白-胆固醇（HDL-C）是影响FDR组胰岛素抵抗的独立危险因素;FBG和FINS是影响FDR组胰岛β细胞功能的独立危险因素。结论：T2DM患者一级亲属非肥胖患者在发生糖尿病之前已经存在胰岛素抵抗和胰岛分泌功能缺陷,且随着病程延长胰岛β细胞功能衰竭可能更明显。     

肠镜在腹腔镜辅助低位直肠癌根治术后吻合口出血防治中的意义

目的:探讨肠镜在腹腔镜辅助低位直肠癌根治术后吻合口出血防治中的意义。方法 :回顾性分析我院2006年1月至2011年12月共279例腹腔镜直肠癌根治术病人的资料,其中18例术后吻合口出血。采用卡方检验分析影响吻合口出血的可能因素,对于P     

Specific detection of fungal pathogens by 18S rRNA gene PCR in microbial keratitis

Background  

The sensitivity and specificity of 18S rRNA polymerase chain reaction (PCR) in the detection of fungal aetiology of microbial keratitis was determined in thirty patients with clinical diagnosis of microbial keratitis.     

Swimmer's view: a diagnostic adjunct for oesophageal foreign bodies

We describe the use of a common radiographic view of the lower cervical skeleton, 'Swimmer's View', to aid the diagnosis of foreign bodies in the upper oesophagus, which may be obscured by the clavicles. We further recommend this view when there is uncertainty over the nature of an impacted food bolus in this location, and luminal air is the only visible sign on a plain soft-tissue cervical radiograph.     

Poor correlation between hemolysis and jaundice in glucose 6-phosphate dehydrogenase-deficient babies

BACKGROUND: The role of hemolysis in the pathophysiology of neonatal jaundice (NNJ) in patients with glucose 6-phosphate dehydrogenase (G6PD) deficiency has been questioned recently. The aim of the present study was to determine the contribution of hemolysis to the pathophysiology of jaundice in Malay neonates with G6PD deficiency and NNJ. METHODS: Four groups of babies were included in the study: (i) G6PD deficient with NNJ; (ii) G6PD deficient without NNJ; (iii) G6PD normal with NNJ; and (iv) normal controls. Babies with other known causes of jaundice were excluded from the study. All subjects underwent the following investigations on day 3-5 after birth: hemoglobin level (Hb), serum bilirubin level, carboxyhemoglobin (CO-Hb) concentration, reticulocyte count and full blood picture. The results of the investigations were compared between the groups using SPSS version 11. RESULTS: Babies with G6PD and jaundice had a similar percentage of CO-Hb to babies with G6PD without NNJ or babies with normal G6PD and NNJ (1.76 +/- 0.40% vs 1.66 +/- 0.31% and 1.67 +/- 0.28%, respectively; P: 0.23 and 0.41, respectively). Total Hb levels and reticulocyte counts were not significantly different between the groups. The blood film showed more (even though not reaching significance) hemolysis in the G6PD patients but results of the blood film were very similar for G6PD patients with and those without NNJ. CONCLUSION: Hemolysis is not a main determinant of neonatal jaundice in G6PD-deficient babies.     

Impact of age and drug resistance on mortality in typhoid fever

The risk factors for mortality were analysed in a consecutive group of 1158 children presenting to the Aga Khan University Medical Center, Karachi, with multidrug resistant typhoid fever that had been proved on culture. There were 19 deaths, representing an overall case fatality rate of 1.6%. Multidrug resistant typhoid was associated with a more severe clinical illness and higher rates of toxicity, hepatomegaly, hypotensive shock, and death. Irrespective of drug resistance status, typhoid fever was found to be a more severe illness in young infants with significantly higher rates of diarrhoea, hypotensive shock, and mortality. Univariate analysis of admission characteristics associated with increased risk for mortality revealed significant association with younger age (p < 0.05), hypotensive shock or hypothermia (p < 0.001), obtundation (p < 0.001), seizures (p < 0.05), anaemia at admission (p < 0.005), and leucocytosis (p < 0.001). Logistic regression analysis of risk factors for mortality showed persistent association of hypothermia, toxicity, and anaemia with mortality. The data provides evidence that multidrug resistant typhoid in childhood is associated with increased risk of mortality, especially in infancy and closer attention to several risk factors for increased morbidity and case fatality rates may lead to improved outcome of treatment.     

The immunoserological diagnosis of tuberculosis: a comparison of two tests

A comparative study of the diagnostic value of the ICT-TB test and the TB-Dot test, based on laboratory examination, was carried out in 39 patients suffering from sputum positive pulmonary tuberculosis (25 males and 14 females, aged 16-50 years) and in 48 patients (27 males and 21 females, aged 17-55 years) suffering from non-tuberculosis pulmonary diseases, that had attended the Tembagapura Hospital and the TB Control Health Center Timika-Mimika, Papua. The diagnostic sensitivity of the ICT-TB test was 87.18%, the diagnostic specificity was 81.25%, the diagnostic positive predictive value was 79.07%, the negative predictive value was 88.64%, and the diagnostic efficiency was 83.91%. The diagnostic sensitivity of the TB-Dot test was 93.31%, the diagnostic specificity was 95.83%, the diagnostic positive predictive value was 94.74%, the negative predictive value was 93.85%, and the diagnostic efficiency was 94.25%. The results of the statistical analysis of the data obtained in this study revealed that the diagnostic specificity, the diagnostic positive predictive value and the diagnostic efficiency of the TB-Dot test were significantly higher (p < 0.05) than those of the ICT-TB test. However, the diagnostic sensitivity and the negative predictive value of both tests did not differ significantly (p > 0.05). Viewed from the point of their practicability, it can be justified that the ICT-TB test is a very practicable test, which needs only 15 minutes and does not require special instruments to perform the test, but is more expensive than the TB-Dot test. On the other hand, though the TB-Dot test is not very practicable and relatively time consuming, it has a significantly higher degree of diagnostic value and is much cheaper when compared to the ICT-TB test.     

The disinfection of flexible fibre-optic nasendoscopes out-of-hours: confidential telephone survey of ENT units in England

We present the results of a confidential telephone survey of ENT units in England on the disinfection of flexible fibre-optic nasendoscopes out-of-hours. The on-call residents of 124 units were contacted and questioned. In 35.1 per cent of units surveyed, the on-call resident was primarily responsible for cleaning the scopes after use. Only 46 per cent of these junior doctors had access to a chemical sterilant to allow for high-level disinfection of these scopes. Provision for disinfection of scopes was poorer in teaching hospitals and in units that served inner city populations. Only 12.1 per cent of Senior House Officers (SHOs) received any training in disinfection techniques and only 25.5 per cent of units kept a register of patients nasendoscoped out-of-hours for purposes of contact tracing.