The "conscious sedation" is that state in which the patient has a low level of consciousness, but tolerate procedures that can be unpleasant while maintaining an adequate cardiopulmonary function and the ability to respond appropriately to verbal commands and tactile stimulation.

The degree or level of sedation depends on the procedure that would be done, is not the same sedate a patient for a little painful procedure than a treatment that is very painful, there are a wide range of sedation from a minimal grade of sedation to a general one. We can say that the "conscious sedation" is a state that goes from a superficial level to a deeper ones similar to the general anaesthesia.


These levels can be described as follows.

1st Minimum sedation: Is the level induced by a drug where the patient has a lower level of consciousness but can answer normally to verbal commands. Her airway,ventilatory and cardiovascular systems are not affected.

2nd Moderate Sedation: The degree where a patient has a lower level of consciousness but respond to a tactile and verbal stimulations. Although maintaining a permeable airway, the ventilatory and cardiovascular functions are quietly depressed, although they remain within normal physiological ranges.

3rd Deep Sedation or General Anaesthesia: Is a drug-induced state in which the patient can’t regain consciousness before a tactile stimulus. Ventilatory function is depressed, in some cases requiring ventilatory support or manual or assisted help. The general anaesthesia must be performed in a hospital.



General anaesthesia is an irreplaceable complement of modern surgery. General anaesthesia ensures that the patientsare unconscious, don’t feeling any pain, having no memory of the surgery, remaining immobile during operation and with sufficient autonomy for the nervous system, respiratory and cardiac responses to keep themselves alive.

Achieving this would be impossible without a variety of drugs. The paralyzing or induction drug are used to put a person to sleep quickly, painkiller medications and inhaled medicines keep patients asleep, those techniques are part of the surgery in the XXI century.

Medicacion for pain or amnesia.

Intravenous drugs are administered directly into a vein. Intravenous drugs are used for induction; calm people just before surgery and to assist a faster induction of general anaesthesia. Some agents administered intravenously keep being administrated during surgery with continuous gas inhalation. General anaesthesia is performed in a hospital.