Articles: opioid.
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Although beneficial in acute and chronic pain management, the use of local anaesthetics is limited by its duration of action and the dose dependent adverse effects on the cardiac and central nervous system. Adjuvants or additives are often used with local anaesthetics for its synergistic effect by prolonging the duration of sensory-motor block and limiting the cumulative dose requirement of local anaesthetics. The armamentarium of local anesthetic adjuvants have evolved over time from classical opioids to a wide array of drugs spanning several groups and varying mechanisms of action. ⋯ The concern regarding the safety profile of these adjuvants is due to its potential neurotoxicity and neurological complications which necessitate further research in this direction. Current research is directed towards a search for agents and techniques which would prolong local anaesthetic action without its deleterious effects. This includes novel approaches like use of charged molecules to produce local anaesthetic action (tonicaine and n butyl tetracaine), new age delivery mechanisms for prolonged bioavailability (liposomal, microspheres and cyclodextrin systems) and further studies with other drugs (adenosine, neuromuscular blockers, dextrans).
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The term medication-assisted treatment has been widely adopted in reference to the use of opioid agonist therapy. Although it is arguably better than the older terms of replacement or substitution therapy, medication-assisted treatment implies that medications are a corollary to whatever the main part of treatment is. ⋯ It has finally been recognized that to improve care and reduce stigma, we must use medically accurate and person-first language, describing those with the disease of addiction as people with substance use disorder. However, to truly change outcomes, we must also alter the language of treatment.