Magnesium research : official organ of the International Society for the Development of Research on Magnesium
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Randomized Controlled Trial
Analysis of the effect of perioperative magnesium sulphate on minimal alveolar concentration of desflurane using bispectral index monitoring.
In this study we aimed to analyze the effect of perioperative magnesium sulphate (MgSO(4)) on minimal alveolar concentration (MAC) of desflurane using bispectral index (BIS) monitoring. ⋯ We concluded that perioperative MgSO(4) infusion may be used as an adjunct as it decreases MAC of desflurane and suppresses the hemodynamic response to intubation.
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Randomized Controlled Trial
Oral magnesium treatment in patients with neuropathic pain: a randomized clinical trial.
Studies in animals and in patients have suggested that magnesium (Mg), a physiological blocker of N-methyl-D-aspartate receptor, could have an antinociceptive effect in painful situations. This randomised, double-blind, controlled trial in two parallel groups aims at studying oral Mg effects in patients with neuropathic pain. ⋯ This clinical trial displays a large placebo response and could not demonstrate any significant difference in pain alleviation after a month of oral treatment between Mg and placebo in patients suffering from neuropathic pain. Frequency of pain paroxysms and emotional impact will be explored in future studies as they constitute major aspects of pain alleviation in chronic pain conditions.
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Randomized Controlled Trial Multicenter Study
The effect of hypermagnesemic treatment on cerebrospinal fluid magnesium level in patients with aneurysmal subarachnoid hemorrhage.
Preliminary evidence has suggested that magnesium sulfate infusion reduces delayed ischemic neurological deficit and improves clinical outcome after aneurysmal subarachnoid hemorrhage. However, little is known about its site of action in vivo. We studied 22 aneurysmal subarachnoid hemorrhage patients with or without magnesium sulfate infusion for 10-14 days. ⋯ We found that the magnesium sulfate infusion bought an 11% to 21% increase in cerebrospinal fluid magnesium. The elevation of cerebrospinal fluid magnesium was sustained for at least nine days. Whether this mild elevation in cerebrospinal fluid magnesium level was adequate for neuroprotection awaits the results of ongoing clinical trials.
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Randomized Controlled Trial
The effects of magnesium prophylaxis in migraine without aura.
There are inconsistent findings about the efficacy of magnesium in the prophylaxis of migraine attacks and there is no study of magnesium prophylaxis focused on migraine subtypes without aura. In this double blind, randomized, placebo controlled study; we tried to evaluate the prophylactic effects of oral magnesium in migraine patients without aura. The prophylactic effects of 600 mg/day oral magnesium citrate supplementation were assessed by means of clinical evaluation, visual evoked potential and statistical parametric mapping of brain single photon emission computerized tomography before and after a 3 month treatment period. ⋯ In a comparison of the effects of magnesium treatment with those of placebo, post/pretreatment ratios of migraine attack frequency, severity and P1 amplitude in Mg treatment group were found to be significantly lower than those in placebo treatment group (attack frequency p = 0.005, attack severity p < 0.001, P1 amplitude p < 0.05). Cortical blood flow in inferolateral frontal (p < 0.001), inferolateral temporal (p = 0.001) and insular regions (p < 0.01) increased significantly after magnesium treatment with respect to the pretreatment; while such significant changes of cortical blood flow were not observed with placebo treatment. These results have made us think that magnesium is a beneficial agent in prophylaxis of migraine without aura and might work with both vascular and neurogenic mechanisms.
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Randomized Controlled Trial Clinical Trial
Prophylactic effects of intravenous magnesium on hypertensive emergencies after cataract surgery. A new contribution to the pharmacological use of magnesium in anaesthesiology.
The pharmacological effects of magnesium sulphate heptahydrate (MgSO4.7H2O) on hypertensive patients during the perioperative period were used, to control critical rises of blood pressure. This double-blind study included 40 hypertensive elderly patients, who underwent eye surgery under local anaesthesia; they were divided into two groups (A and B) of 20 patients each. An intravenous dose of 4g MgSO4.7H2O was given to group. ⋯ None of the patients who received MgSO4.7H2O showed any ECG disturbances. Systolic and diastolic blood pressure, as well as heart rate, fluctuated outside the critical range, whereas in the control group an increase of blood pressure was noted which was treated with other anti hypertensive drugs. The results indicated that parenteral administration of MgSO4.7H2O in hypertensive patients before surgery stabilized blood pressure fluctuations outside the critical range, without causing the pressure to fall to a level that might risk undesirable side effects during eye surgery under local anaesthesia.