General Principles of Monitored Anesthesia Care

Avoid combinations of local anesthetics with heavy sedation (opioids, benzodiazepines, hypnotics).
After placement of the block, patient should be relaxed but awake to avoid head movement.
Able to maintain airway patency
Avoid undersedation and associated hypertension and tachycardia (especially in patients with coronary artery disease).
Provide adequate ventilation about the face to avoid carbon dioxide accumulation.
Continuous monitoring of the electrocardiogram (oculocardiac reflex) and oxygen saturation.