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[Traitement] Les immunoglobulines intraveineuses destinées à prévenir les crises myasthéniques après une thymectomie ...

Posté : 22 août 2019 11:37
par Pboulanger
:hi:

Voici le titre complet en français trop long pour notre logiciel

Les immunoglobulines intraveineuses destinées à prévenir les crises myasthéniques après une thymectomie ou d'autres procédures peuvent être omises chez les patients présentant une myasthénie grave bien contrôlée.

:arrow: Lu sur : https://www.ncbi.nlm.nih.gov/pubmed/31360225


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Ther Adv Neurol Disord. 2019 Jul 17;12:1756286419864497. doi: 10.1177/1756286419864497. eCollection 2019.
Intravenous immunoglobulin to prevent myasthenic crisis after thymectomy and other procedures can be omitted in patients with well-controlled myasthenia gravis.

Gamez J1, Salvadó M2, Carmona F3, de Nadal M4, Romero L5, Ruiz D4, Jáuregui A5, Martínez O4, Pérez J5, Suñé P6, Deu M5.


Abstract


Background:

Myasthenic crisis (MC) is a potentially life-threatening complication of myasthenia gravis. Its precipitating factors include surgical procedures, particularly thymectomy. The role of preoperative intravenous immunoglobulin (IVIg) in preventing MC in patients scheduled for thymectomy and other surgery with general anaesthesia is unknown. Our objective was to test the hypothesis that preoperative IVIg is effective in preventing myasthenic crisis in patients with myasthenia gravis scheduled for surgery under general anaesthesia, including thymectomy.


Methods:

A prospective, randomized, double-blind, single-centre study was conducted over a 4-year period. The treatment group received IVIg, 0.4 g/kg/day preoperatively for 5 consecutive days, and the placebo group received saline solution under the same conditions. The two groups were age-matched, with similar functional status, and Myasthenia Gravis Foundation of America class. All patients had well-controlled myasthenia gravis with minimal manifestations before surgery. The primary outcome measured was MC. Intubation times, time in the recovery room, number of postoperative complications, and days of hospitalization were the secondary outcomes measured.


Results:

A total of 47 patients were randomized, 25 to the IVIg group and 22 to placebo. There were 19 men and 28 women, with a mean age of 58.6 years, mean body mass index of 27.8 kg/m2, and mean acetylcholine receptor antibodies of 12.9 nmol/l. The mean forced vital capacity was 84.4%. The mean quantitative myasthenia gravis sum score was 6.3. Ten patients (five in each arm) had a history of MC. Thymectomy was performed in 16 patients. Only one patient in the placebo group presented with MC requiring non-invasive ventilation (but no reintubation) for 6 days. Neither differences between groups in the univariate analysis nor risk factors for MC in the multivariate analysis were found.

Conclusions:

Preoperative IVIg to prevent MC does not appear to be justified in well-controlled myasthenia gravis patients. This study provides class I evidence that preparation with IVIg to prevent MC is not necessary in well-controlled myasthenia gravis patients scheduled for surgery with general anaesthesia.
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