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Biomedical subjects

A Azzouzi

Publications and source records attributed to A Azzouzi.

8 recordsLinked to original sources

The bacteria in the sediment of the Sahela reservoir (Morocco): potential impacts on phosphorus budget.

Temporal variations of phosphorus concentrations, bacterial abundance and activity of fractionated (i.e: size fractions: 0.22 to 0.65 microm; 0.65 to 100 microm and 0.22 to 100 microm) alkaline phosphatase (APA) were studied in situ in a benthic chamber placed in a station near urban inputs in the Sahela reservoir (Morocco) on September and October 98. Results show that low oxygen concentrations induced enhanced concentrations of orthophosphates, and bacterial numbers and APA activity reached their highest values. Anoxic conditions and the decrease of pH favour the dissolution of particulate phosphorus and the release of soluble reactive phosphorus. This release is accompanied simultaneously by an increase in the abundance of anaerobic bacteria and a progressive reduction in APA. Lastly, the release of phosphorus together with urban inputs from the city of Taounate should be considered as potential inducers of the eutrophication of the reservoir.

Alkaline Phosphatase↗

[Hypoglycaemia after surgery on phaeochromocytoma].

Few cases of postoperative hypoglycaemia complicating the removal of a phaeochromocytoma have been reported in the literature. We reported one case of hypoglycaemia secondary to the removal of right phaeochromocytoma in a 30-year-old patient. Seven hours after the excision of the tumour, the patient developed a severe hypoglycaemia at 1.67 mmol x l(-1) revealed by seizures completely resolving in 24 h. The hypoglycaemia in this context resulted probably from the massive secretion of insulin by the beta cells of Langerhans islands due to the suppression of alpha-adrenergic inhibition. The prevention of this complication requires the repeated measurement of the capillary glycaemia in the postoperative period. An important supply of carbohydrate may be necessary to maintain a normoglycaemia.

Adrenal Gland Neoplasms↗

[Quadriplegia secondary to potassium depletion].

Muscle paralysis due to potassium depletion are unusual. We report the case of a patient who developed quadriplegia and language disorders due to potassium depletion, following large intestinal resection. Potassium supplementation was given intravenously at a rate of 0.25 mmol.kg-1.h-1 during the first 48 h. This allowed complete total and rapid recovery from the paralysis.

Electroencephalography↗

[Emphysematous pyelonephritis: a case report].

In this study, a case of emphysematous pyelonephritis has been reported in a 70-year old diabetic male with a non-functional contralateral kidney. In spite of appropriate medical treatment and surgical drainage, the outcome was negative. The case in question concerned a rare form of the disease, i.e., emphysematous pyelonephritis, a severe and necrotizing infection which is characterized by the presence of intraparenchymal gas produced by anaerobic bacteria, and the rapid development of acute sepsis or septic shock. Medical treatment alone is seldom sufficient, and surgical intervention, in most instances consisting of radical nephrectomy rather than surgical drainage, is advocated due to the extent of the necrotic lesions.

Aged↗

[Pheochromocytoma. Severe and uncommon presentations].

We report five cases of phaeochromocytoma in patients admitted for myocardial infarction, severe cardiac failure, with shock, stroke and ischaemic gangrene of a lower limb respectively. The pathophysiology of these events is discussed. Early surgery prevents visceral damage from massive release of catecholamines.

Adrenal Gland Neoplasms↗

[Ulcero-hemorrhagic rectocolitis: operative morbidity and mortality. Apropos of 100 cases].

We performed a retrospective analysis of morbidity and mortality in 100 cases of ulcerative colitis treated at the surgical care unit of the Ibn Sina hospital over a 10 year period from 1984 to 1994. One major complication, usually infection, was observed in 40% of the cases. Overall mortality was 22%, a rate higher than the larger published series. The main factor incriminated in our study ; besides surgical circumstances, was the delay in care, including in the intensive care unit. It must be concluded that medical and surgical management must be initiated as soon as a flare up is diagnosed.

Adolescent↗

[Orthotopic transplantation of segmental hepatic graft from living donors in the dog. Technic and results].

The authors describe new technic of non-auxiliary orthotopic transplantation of segmental liver harvested from living dogs. 32 dogs were utilized. In the donor dogs, the left medial and lateral lobes were mibilized. The left portal branch, left hepatic artery, left biliary branch and the left hepatic vein were dissected free. The segmental liver graft was perfused and cooled in-situ through the left portal vein. The recipient dogs underwent two steps total hepatectomy: First the segments I, II, III, IV and V were resected. The segments VI and VII were maintained as well as the right portal vein and the retro-hepatic inferior vena cava order to keep the splanchnic and caval flux and to avoid the spleno-cavo-jugular by-pass. The segmental liver graft was then transplanted in an orthotopic position. Termino-lateral hepatico-caval anastomosis and left porto-portal anastomosis as well as arterial and biliary reconstruction were executed. All the donors survived more than 30 days. Nine recipient dogs died during the first three post-operative days from hemorrhage (3 dogs), fibrinolysis (2 dogs), primary non function of the graft (2 dogs) and hepatic artery thrombosis (1 dog). Seven recipients survived more than 30 days.

Alanine Transaminase↗