Sedation is a medical procedure involving the administration of sedative drugs, generally to facilitate a medical procedure with local anaesthesia.
Sedation scales are used in medical situations in conjunction with a medical history in assessing the applicable degree of sedation in patients in order to avoid under-sedation (the patient risks experiencing pain or distress) and over-sedation (the patient risks side effects such as suppression of breathing, which might lead to death). Typically, levels are (i) agitation, (ii) calm, (iii) responsive to voice only, (iv) responsive to shaking only, (v) responsive to pain only, and (vi) not responsive.