Sugammadex and Neostigmine at Residual Neuromuscular Blockade

2014-08-27 03:18:14 | BioPortfolio


This study is designed to compare recovery times after reversal of a residual neuromuscular block (TOF-ratio 0.2) with different doses of either neostigmine or sugammadex.


Muscle relaxants are integral part of modern anesthesia. They optimize intubating conditions, reduce laryngeal trauma and improve operating conditions. Drawback is a possible pharmacological (muscle relaxing) effect of these drugs beyond the end of the operation (i.e. post-operative residual curarization: PORC). Reportedly about 30% of all patients who received muscle relaxants show signs of PORC when arriving in the post-anesthesia care unit. PORC comprises the risk of impaired post-operative fine motor and coordinative skills with a possible impairment of swallowing pharyngeal secretions with an increased risk of aspiration after extubation. Possible deleterious effects of this could be pneumonia, bronchitis, myocardial infarction, cardiac insufficiency, stroke or re-operation.

In order to avoid PORC patients with residual neuromuscular block receive a muscle relaxant antagonist from the anesthesiologist at the end of the operation. However, these drugs (neostigmine, pyridostigmine, etc.) from the class of cholinesterase inhibitors have unwanted effects such as bradycardia, increased gastro-intestinal motility, post-operative nausea and vomiting, salivation etc. To decrease these unwanted side effects cholinesterase inhibitors have to be given in combination with parasympatholyics e.g. atropine or glycopyrrolate with their own spectrum of unwanted side effects.

From October 2008 on, Sugammadex, a completely new reversal drug was introduced in to clinical practice. Sugammadex, is a modified γ-cyclodextrine able to specifically bind rocuronium (a steroidal muscle relaxant). The complex is eliminated via the kidneys. However, all studies so far have focussed on reversal of profound or deep neuromuscular blockade. This study is designed to compare recovery times after reversal of a residual neuromuscular block (TOF-ratio 0.2) with different doses of either the neostigmine or sugammadex.

Study Design

Time Perspective: Prospective


Residual Neuromuscular Block (TOF-ratio of 0.2)


Sugammadex, Neostigmine, Saline


Klinik für Anaesthesiologie, Klinikum rechts der Isar der Technischen Universität München




Technische Universität München

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:18:14-0400

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Medical and Biotech [MESH] Definitions

The intentional interruption of transmission at the NEUROMUSCULAR JUNCTION by external agents, usually neuromuscular blocking agents. It is distinguished from NERVE BLOCK in which nerve conduction (NEURAL CONDUCTION) is interrupted rather than neuromuscular transmission. Neuromuscular blockade is commonly used to produce MUSCLE RELAXATION as an adjunct to anesthesia during surgery and other medical procedures. It is also often used as an experimental manipulation in basic research. It is not strictly speaking anesthesia but is grouped here with anesthetic techniques. The failure of neuromuscular transmission as a result of pathological processes is not included here.

A cholinesterase inhibitor used in the treatment of myasthenia gravis and to reverse the effects of muscle relaxants such as gallamine and tubocurarine. Neostigmine, unlike PHYSOSTIGMINE, does not cross the blood-brain barrier.

The ratio of two odds. The exposure-odds ratio for case control data is the ratio of the odds in favor of exposure among cases to the odds in favor of exposure among noncases. The disease-odds ratio for a cohort or cross section is the ratio of the odds in favor of disease among the exposed to the odds in favor of disease among the unexposed. The prevalence-odds ratio refers to an odds ratio derived cross-sectionally from studies of prevalent cases.

The use of peripheral nerve stimulation to assess transmission at the NEUROMUSCULAR JUNCTION, especially in the response to anesthetics, such as the intensity of NEUROMUSCULAR BLOCKADE by NEUROMUSCULAR BLOCKING AGENTS.

Interruption of sympathetic pathways, by local injection of an anesthetic agent, at any of four levels: peripheral nerve block, sympathetic ganglion block, extradural block, and subarachnoid block.

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