PubMed · 3464050
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J Courtois. 1986. [Halitosis].. https://pubmed.ncbi.nlm.nih.gov/3464050/
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Dysphagia or odynophagia occurs in an estimated 21% of patients with human immunodeficiency virus infection. A causal agent can be identified in 60-90% of the cases and generally can be successfully eradicated. Oesophageal candidosis, the predominant disorder, usually responds to nitrate derivatives and amphotericine B after a 10 to 15 day cure. Ulcerations of the oesophagus is the second major cause of dysphagia in these patients and result from cytomegalovirus and herpes simplex infections or unknown causes. Epstein-Barr virus infection has been suggested but is rarely demonstrated in clinical situations. Similar to other localizations in HIV-infected patients, Kaposi sarcoma and non-Hodgkin malignant lymphomas are the predominant tumours in the bowel. Infections are essentially revealed by sometimes very severe diarrhoea. Infective agents include Cryptosporidium parvum, microsporidiosae, cytomegalovirus, adenovirus, Isospora belli, Clostridium difficile, Salmonellae and non-tuberculous mycobacteria among others. When the search for an infective agent is negative, the diarrhoea is usually considered to be the expression of HIV infection itself. The clinical approach to HIV-related diarrhoea can be based on decision making management scheme according to the results of stool cultures or on complete exploration protocols. Whatever the diagnostic procedure, symptomatic treatment is of major importance because of the severe nutritional impact of HIV-related diarrhoea.
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Measurement in faeces of the principal nutrients, fat (F), water (W) and nitrogen (N) is useful to assess digestive and absorptive functions and thus to monitor patients' progress and response to therapy in malabsorption/maldigestion syndromes. Presently available techniques are not ideal in clinical practice for serial analysis as they are time-consuming and require unpleasant and prolonged handling of the stools. The present study aimed to evaluate the accuracy and precision of near infrared reflectance analysis (NIRA) in routine measurement of fat, nitrogen and water faecal contents compared with Van de Kamer (VDK), Kjeldahl (KJ) and gravimetric-by-lyophilization (LY) methods, respectively. Fat, nitrogen and water (n = 34), were measured in the 1-day faecal collections of 15 healthy subjects and 19 patients (10, coeliac disease; 6, chronic pancreatitis; 3, small-bowel Crohn's disease). A highly significant linear correlation was found between VDK, KJ, LY methods and NIRA analysis. Very low values of intra-assay coefficient of variation indicated a remarkable analytical precision of NIRA. A recovery test at different concentrations in the useful range was performed for all three nutrients, to assess the accuracy of NIRA. Quantitative recoveries were between 95 and 105%. Data from the present study show that NIRA analysis is reproducible, accurate and rapid (less than 1 min). These characteristics make NIRA serial analysis useful in clinical practice to monitor progress and response to therapy in patients with malabsorption/maldigestion syndromes.