[Hypocalcaemia falsely resistant: think to hypomagnesaemia]

Hypocalcaemia may cause serious disorders such convulsions laryngospasm and cardiac troubles up to sudden death. This deficit must be corrected as soon as possible. However, this correction is not always evident and needs vigilance on the part of clinicians. Young girl of 18 years who underwent subtotal thyroidectomy and who had subsequently persistent hypocalcaemia at 44 mg / 1, supplemental treatment did not improve sufficiently establishing that figure. One of the biological control balances showed stigmata of malabsorption, mainly a hypoferritinemia, hypomagnesaemia and mild hypoalbuminemia. Clinically, the hypocalcaemia was manifested by tetany and repeated convulsions; correction of hypomagnesaemia has significantly improved the serum calcium level and clinical state of the patient. Hypocalcaemia is a common complication of thyroid surgery through several mechanisms; disorders can be a cause of inefficiency of the supplemental treatment. Hypomagnesaemia is an example because of the role of magnesium in calcium metabolism. Hypomagnesaemia should be checked in front of any hypocalcaemia presenting as resistant-treatment prior to labeling it as refractory case

staphylocoques methicillino-resistants en milieu hospitalier: Sensibilite aux antibiotiques

The methicillin-resistant Staphylococci [MRS] have an important place in the nosocomial infection. They are remarquably resistant to many antibiotics except for glycopeptids who keep their activity. However, resistant cases have been signaled in the last few years. This work was designed to assess the resistance of MRS to glycopeptids and to other antibiotics. Material and methods: 40 MRS were isolated from hospitalized patients, their resistance for glycopeptids has been studied by the E-test methods. resistance to the other antibiotics [used in the staphylococcus infections], showed, 27 to 75%. Relating to glycopeptids, no resistance to Vancomycin, 5% to Teicoplanine. 10% of the MRS studied had an intermediate sensitivity for this last. this situation indicates that it is necessary to pay attention for the MRS nosocomial infections. Many studies showed that measures relatively within our reach proved to be utility for overcoming such infections. Also glycopeptids must not be prescribed expect in necessary cases after a bacteriological examination

Composition moleculaire des calculs urinaires chez l'enfant en associant methodes chimique et optique

The calculi must be analyzed to find urolithiasis etiology. This investigation will allow adopting the appropriate action to avoid the stone's recurrence. Infrared spectroscopy, the reference method in calculi analysis, is unfortunately very expensive that we can't use it in our laboratory. In this study, we determine the molecular composition of urinary calculi from children using a simple and inexpensive protocol. We used the chemical method in association with optical method using binocular lens to make it more effective. We applied this protocol in studying urinary calculi collected from forty seven children and we analyzed the results according to clinical and radiological data. Our patients were aged between 2 and 16 years. The majority of them [81%] were aged over 4 years. The vesical calcui represented 51%. The calcium oxalate calculi were dominant [61,7% of cases]. The principal majority component varied according to children's age. At age less than five the major component was calcium phosphate which represented 44% while calcium oxalate represented only 22%. However, at the age of five and over, these kinds of components represented respectively 13,5% and 71% of cases. Struvite, cystin and uric acid were predominant in 6,38% of cases. This protocol allowed us to determine the molecular composition of all studied stones. It had permitted also to identify their etiology in one third of cases and to orient it in the remaining cases