Sedation or analgesia takes away your anxiety, reduces pain sensitivity and makes you sleepy. For this purpose, drugs are administered into the bloodstream via an indwelling vein cannula.
Other medications may also be administered, such as a physiologic water solution for fluid replacement, circulatory agents, analgesics, and/or antibiotics. Individual differences in sensitivity can cause a light relaxation to turn into a deep sleep. Analgesia may be accompanied by a drop in blood pressure or respiratory disturbances and may require the administration of oxygen, medications, and fluids.
If sedation unintentionally transitions to anesthesia with complete unconsciousness, life-threatening respiratory and cardiovascular arrest may result. Artificial respiration and further intensive medical treatment measures are then required.