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Biomedical subjects

M P Carney

Publications and source records attributed to M P Carney.

4 recordsLinked to original sources

Intramedullary cavernous malformations.

Five cases of intramedullary cavernous malformations were retrospectively reviewed. There were 4 women and one man ranging in age from 30 to 67 years. Thoracic spinal cord was involved twice and cervical cord in three cases. Four of them underwent surgery: two improved, one remained stable and symptoms worsened in one. Clinical, radiological features and surgical management are discussed in the light of the follow-up and literature analysis. The role of T2* weighted sequence in MR diagnosis of intramedullary cavernomas is emphasised.

Adult↗

Antiarrhythmic response to intravenously administered magnesium after cardiac surgery.

We evaluated the antiarrhythmic response to magnesium given intravenously to 40 patients who had had elective cardiopulmonary bypass for the surgical treatment of acquired cardiac disease. All 40 patients were found to have hypomagnesemia postoperatively as defined by a serum magnesium level of less than 1.8 mg/dL. The ventricular arrhythmias of these patients were categorized by a modified Lown grade classification. Magnesium sulfate (16 mEq, [2000 mg]) was administered, and the patients were reclassified according to their rate of ventricular ectopia. All arrhythmias of a higher grade responded to the treatment with a marked reduction in ventricular ectopia and were reclassified to a lower grade. This study supports the routine administration of magnesium sulfate, at a dose of 16 mEq, in postoperative cardiac patients who are hypomagnesemic.

Anti-Arrhythmia Agents↗