Magnesium, a non-competitive blocker of N-methyl-D-aspartate receptor, initially used for management of preeclampsia, arrhythmia and bronchial asthma, is of great importance in anesthesia practice nowadays. It is being used intravenously, intrathecally as well as epidurally for postoperative pain relief. Recently it has gained popularity as an adjuvant in blocks. Anesthetic and analgesic sparing characteristics of magnesium enable anesthesiologists to reduce the dose of anesthetics during surgery and the use of analgesics after surgery.
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