Biomaterial Database

Magnesium sulphate enhances residual neuromuscular block induced by vecuronium. 1996

T Fuchs-Buder, and E Tassonyi

Department of Anaesthesiology, Geneva University Hospital, Switzerland.

Magnesium sulphate (MgSO4) is currently used for haemodynamic control during anaesthesia and the early postoperative period. We have investigated the effect of this treatment on residual neuromuscular block after administration of vecuronium. Twenty adult patients were allocated randomly to one of two groups to receive MgSO4 60 mg kg-1 either at recovery from vecuronium block to a train-of-four (TOF) ratio of 0.7, or 1 h after recovery to a TOF ratio of 0.7. Neuromuscular transmission was monitored using electromyography and TOF stimulation. MgSO4 caused rapid and profound recurarization in all 20 patients. MgSO4 decreased the amount of acetylcholine released at the motor nerve terminal and thus may lead to recurarization in patients previously exposed to neuromuscular blocking agents.

UI	MeSH Term	Description	Entries
D008278	Magnesium Sulfate	A small colorless crystal used as an anticonvulsant, a cathartic, and an electrolyte replenisher in the treatment of pre-eclampsia and eclampsia. It causes direct inhibition of action potentials in myometrial muscle cells. Excitation and contraction are uncoupled, which decreases the frequency and force of contractions. (From AMA Drug Evaluations Annual, 1992, p1083)	Magnesium Sulfate, Heptahydrate,Heptahydrate Magnesium Sulfate,Sulfate, Magnesium
D009407	Nerve Block	Interruption of NEURAL CONDUCTION in peripheral nerves or nerve trunks by the injection of a local anesthetic agent (e.g., LIDOCAINE; PHENOL; BOTULINUM TOXINS) to manage or treat pain.	Chemical Neurolysis,Chemodenervation,Nerve Blockade,Block, Nerve,Blockade, Nerve,Blockades, Nerve,Blocks, Nerve,Chemical Neurolyses,Chemodenervations,Nerve Blockades,Nerve Blocks,Neurolyses, Chemical,Neurolysis, Chemical
D009469	Neuromuscular Junction	The synapse between a neuron and a muscle.	Myoneural Junction,Nerve-Muscle Preparation,Junction, Myoneural,Junction, Neuromuscular,Junctions, Myoneural,Junctions, Neuromuscular,Myoneural Junctions,Nerve Muscle Preparation,Nerve-Muscle Preparations,Neuromuscular Junctions,Preparation, Nerve-Muscle,Preparations, Nerve-Muscle
D011182	Postoperative Care	The period of care beginning when the patient is removed from surgery and aimed at meeting the patient's psychological and physical needs directly after surgery. (From Dictionary of Health Services Management, 2d ed)	Care, Postoperative,Postoperative Procedures,Procedures, Postoperative,Postoperative Procedure,Procedure, Postoperative
D011184	Postoperative Period	The period following a surgical operation.	Period, Postoperative,Periods, Postoperative,Postoperative Periods
D002317	Cardiovascular Agents	Agents that affect the rate or intensity of cardiac contraction, blood vessel diameter, or blood volume.	Cardioactive Agent,Cardioactive Drug,Cardiovascular Agent,Cardiovascular Drug,Cardioactive Agents,Cardioactive Drugs,Cardiovascular Drugs,Agent, Cardioactive,Agent, Cardiovascular,Drug, Cardioactive,Drug, Cardiovascular
D003473	Neuromuscular Nondepolarizing Agents	Drugs that interrupt transmission at the skeletal neuromuscular junction without causing depolarization of the motor end plate. They prevent acetylcholine from triggering muscle contraction and are used as muscle relaxants during electroshock treatments, in convulsive states, and as anesthesia adjuvants.	Curare-Like Agents,Curariform Drugs,Muscle Relaxants, Non-Depolarizing,Neuromuscular Blocking Agents, Competitive,Nondepolarizing Blockers,Agents, Curare-Like,Agents, Neuromuscular Nondepolarizing,Blockers, Nondepolarizing,Curare Like Agents,Drugs, Curariform,Muscle Relaxants, Non Depolarizing,Non-Depolarizing Muscle Relaxants,Nondepolarizing Agents, Neuromuscular
D004347	Drug Interactions	The action of a drug that may affect the activity, metabolism, or toxicity of another drug.	Drug Interaction,Interaction, Drug,Interactions, Drug
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000768	Anesthesia, General	Procedure in which patients are induced into an unconscious state through use of various medications so that they do not feel pain during surgery.	Anesthesias, General,General Anesthesia,General Anesthesias