INBDE (Integrated National Board Dental Examination) Practice Exam

Achieving adequate nitrous sedation corresponds to which Guedel's stage of anesthesia?

1. Stage 1

2. Stage 2

3. Stage 3

4. Stage 4

The correct answer is: Stage 1

A) Stage 1 corresponds to the "analgesia stage" of anesthesia, where there is minimal central nervous system depression and the patient is conscious. This stage is not sufficient for nitrous sedation as it does not provide the desired level of relaxation and sedation. B) Stage 2 corresponds to the "excitement stage" of anesthesia, where there is a period of disorientation and delirium due to the effects of volatile anesthetics on the central nervous system. This stage is not appropriate for nitrous sedation as the patient would not be able to cooperate or follow instructions. C) Stage 3 corresponds to the "surgical anesthesia stage" of anesthesia, where there is a loss of consciousness and reflexes. This stage is not suitable for nitrous sedation as the patient would be fully unconscious and unable to respond to the dentist's instructions. D) Stage 4 corresponds to the "medullary paralysis stage" of anesthesia, where there is a significant risk of respiratory and cardiovascular collapse. This stage is not appropriate for nitrous sedation as it poses serious risks to the patient's health and safety.