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Biomedical subjects

B Marshall

Publications and source records attributed to B Marshall.

111 records · Page 7Linked to original sources
PubMedDate not supplied

The effect of pulmonary edema on proton nuclear magnetic resonance relaxation times.

This study was done to determine the effect of permeability pulmonary edema on proton nuclear magnetic resonance (NMR) relaxation times. Permeability edema was induced in rats by the intravenous injection of alloxan in saline. Control animals received only saline. The rats were ventilated through a tracheostomy; and after a time sufficient for the edema to become uniform, they were sacrificed. T1, and T2 and extravascular lung water were measured on lung samples. A linear relationship was found between the relaxation times and the extravascular lung water. Any diffuse alveolar process including pulmonary edema can increase proton density as well. The T1 and T2 relaxation times may be used to distinguish among different causes of increased proton density in the lung.

Alloxan↗
PubMedDate not supplied

Outbreak of trichinosis in Ontario secondary to the ingestion of wild boar meat.

We report an outbreak of trichinosis from the consumption of locally processed, cold smoked wild boar meat of a domestically reared animal from a farm in Dufferin County, Ontario. Between January and March 1993, 24 cases of trichinosis were identified and of these, 21 patients were symptomatic. The most common symptoms were myalgia (75%), weakness (75%), fever (71%) and periorbital edema (67%). Eosinophilia and elevated creatine phosphokinase levels were noted in 86% and 89% of patients respectively. Trichinella serology was positive in 55%. Two patients were hospitalized, one with severe diarrhoea and another with myalgia and fever. Several patients appeared to improve temporarily after treatment with albendazole. This outbreak reminds us that although trichinosis is rare in Ontario, physicians must maintain a high index of suspicion for the disease. To prevent further outbreaks, the Ontario Government has instituted new guidelines for the processing of all wild boar meat.

Adult↗