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Journal Articles Headache: The Journal of Head and Face Pain Year : 2020

Ketamine‐Magnesium for Refractory Chronic Cluster Headache: A Case Series

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Abstract

Objectives.-To evaluate the safety and efficacy of ketamine-magnesium combination to reduce attacks in a series of patients with refractory chronic cluster headache (rCCH). Background.-Refractory chronic cluster headache (CCH) is a rare but highly debilitating condition that needs new treatment options. A previous publication reported that a single infusion of ketamine-magnesium combination was effective in 2 patients with rCCH. Methods.-The treatment was proposed to consecutive patients with rCCH seen in 2 French hospitals between November 2015 and February 2020 and who were resistant to at least 3 preventive treatments. They received a single ketamine infusion (0.5 mg/kg over 2 hours) combined with magnesium sulfate (3000 mg). The main outcome was a comparison of the number of daily attacks 2 weeks prior to the ketamine-magnesium infusion and 1 week after (on days 7 and 8). The second outcome was the percentage of responders (patients with ≥50% reduction in the frequency of daily attacks). Safety was assessed by the recording of adverse events during infusion. Descriptive statistics are presented as mean ± standard deviation. Results.-Seventeen patients (14 men), with an age of 35.2 ± 8.1 years, were included. They presented with CCH for 6.6 ± 4.3 years. The number of daily attacks decreased from 4.3 ± 2.4 before treatment to 1.3 ± 1.0 after treatment (difference: −3.1 (95% CI: −4.5 to −1.6), P < .001). Seventy six percent (13/17) were responders. Transient and mild sedation was reported by 7/17 patients (41.2%). Conclusions.-The ketamine-magnesium combination seems an effective and well-tolerated therapy for rCCH. Placebocontrolled studies should be conducted to further confirm these findings.
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Dates and versions

inserm-03112418 , version 1 (16-01-2021)

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Xavier Moisset, Pierric Giraud, Estelle Meunier, Sakahlé Condé, Maud Périé, et al.. Ketamine‐Magnesium for Refractory Chronic Cluster Headache: A Case Series. Headache: The Journal of Head and Face Pain, 2020, 60 (10), pp.2537 - 2543. ⟨10.1111/head.14005⟩. ⟨inserm-03112418⟩
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