Brain “embolism” detected by magnetic resonance imaging During percutaneous mitral balloon commissurotomy View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

1999-05

AUTHORS

Paulo Rocha, Salah D. Qanadli, Pierre Strumza, Safia Kacher, Linda Aberkane, Pierre Aubry, Michel Rigaud, Pascal Lacombe, Bernadette Raffestin

ABSTRACT

PURPOSE: The common finding of thrombi between the bifoil balloons when they were extracted after mitral dilation prompted us to look for evidence of minor brain embolisms using the sensitive technique of BMRI (brain magnetic resonance T2-weighted imaging). METHODS: BMRI was performed within 48 hr before and after a percutaneous mitral balloon commissurotomy (PMBC) in each of the 63 patients in this study. RESULTS: There was evidence (hyperintensity foci: HI) of a previous asymptomatic brain embolism in 38 of 63 patients before PMBC and a new HI appeared in 18 of 63 patients after the procedure. New HI signals were found exclusively in the white matter in 8 of 18 patients and in only 3 of 18 were HI signs larger than 1 cm. One patient, with an HI signal > 1 cm in the thalamus and another < 1 cm in the brain stem, presented diplopia accompanied by other minor clinical signs. The differences in HI rate among four subgroups (1, older vs younger than 43 years; 2, sinus rhythm vs atrial fibrillation; 3, echo score < 8 vs > 8; 4, patients from western countries vs the others) were not statistically significant, probably because the number of patients in each subgroup was low. Patients in atrial fibrillation had slightly more (not significant) HI before PMBC (15/20, 75%) than patients in sinus rhythm (23/43, 53%), but after PMBC their HI frequencies were similar (atrial fibrillation: 5/20, 25%; sinus rhythm: 13/43, 30%). CONCLUSION: Brain microembolism is frequent during PMBC, but is often anatomically limited and free from clinical signs in most cases. Brain embolism seems to be related mainly to the procedure itself and not the features of the patient. More... »

PAGES

268-273

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s002709900385

DOI

http://dx.doi.org/10.1007/s002709900385

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1013255073

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/10382068


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