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Magnesium sulfate or magnesium sulphate is a chemical compound, a salt with the formula MgSO 4, consisting of magnesium cations Mg 2+ (20.19% by mass) and sulfate anions SO 2− 4. It is a white crystalline solid , soluble in water but not in ethanol .
Magnesium sulfate is effective in decreasing the risk that pre-eclampsia progresses to eclampsia. [24] Intravenous magnesium sulfate is used to prevent and treat seizures of eclampsia. It reduces the systolic blood pressure but does not alter the diastolic blood pressure, so the blood perfusion to the fetus is not compromised.
Via indirect action, it leads to an increase in acetylcholine production, stimulating M2 receptors on AV node leading to an overall decrease in speed of conduction. Magnesium sulfate is an antiarrhythmic drug, but only used against very specific arrhythmias [ 14 ] such as torsades de pointes .
On the other hand, the use of milder conditions such as acetyl sulfate leads to incomplete sulfonation. Recently, the atom transfer radical polymerization (ATRP) of protected styrene sulfonates has been reported, [ 12 ] [ 13 ] leading to well defined linear polymers, as well as more complicated molecular architectures.
Intravenous magnesium sulfate can reduce calcium ions influx into smooth muscle cells on the airway, causing airway muscle relaxation. [13] It is possible for intravenous magnesium sulfate to cause hypermagnesemia, resulting in muscle weakness. Intravenous magnesium sulfate is contraindicated in patients with renal insufficiency. [14] [15]
Commonly used tocolytic medications include β 2 agonists, calcium channel blockers, NSAIDs, and magnesium sulfate. These can assist in delaying preterm delivery by suppressing uterine muscle contractions and their use is intended to reduce fetal morbidity and mortality associated with preterm birth. [2]
The structures of solid magnesium citrates have been characterized by X-ray crystallography.In the 1:1 salt, only one carboxylate of citrate is deprotonated. It has the formula Mg(H 2 C 6 H 5 O 7) 2 The other form of magnesium citrate has the formula Mg(HC 6 H 5 O 7)(H 2 O) 2, consisting of the citrate dianion (both carboxylic acids are deprotonated). [1]
Magnesium is similarly absorbed from Epsom salts, although the sulfate in these salts adds to their laxative effect at higher doses. Magnesium absorption from the insoluble oxide and hydroxide salts ( milk of magnesia ) is erratic and of poorer efficiency, since it depends on the neutralization and solution of the salt by the acid of the ...