Local Anaesthesia: Advantages and Limitations



The anaesthesia is an inseparable part of surgery. It provides maximum patient comfort and cooperation. Without anesthesia, the advancement in surgeries could not have been achieved. In 3rd molar surgery a patient may opt for general anesthesia or local anesthesia. The local anesthesia may be supplemented with sedation for increased comfort.

Local Anesthesia   

Local anaesthesia means a no pain sensation in a particular area supplied by a specific nerve. The correct term is local analgesia but commonly not used? It is given with the help of 2 ml or 5 ml single use disposable syringes.

Advantages of Local Anaesthesia

  1. The local anesthesia has the following advantages over general anesthesia.
  2. It is safe, efficient and predictably effective in almost all patients.
  3. It is inexpensive.
  4. It is easy to administer.
  5. For healthy patient, no monitoring is needed by equipment
  6. The patient does not lose consciousness with an intact gag reflex during anesthesia.
  7. Procedures under local anaesthesia, hospitalization is not needed, therefore, for patients’, it is convenient.
  8. To administer local anaesthesia, no preoperative fasting is required.
  9. A patient can be discharged immediately without waiting for recovery or an escort.

Limitations of Local Anaesthesia

In Spite of huge number of advantages, the local anaesthesia does have certain

disadvantages. They are as follows.

  1. It cannot be used in a non-cooperative patient; for example, younger children.
  2. It cannot be used in a patient with fear of needles.
  3. It cannot be used in an anxious or nervous patient.
  4. It is only suitable for short procedures which are of less than 30-minute duration.
  5. It cannot anesthetize the locally inflamed tissues.

Composition of Local Anaesthesia

The local anaesthetic solutions mainly contain the following contents.

  1. Local anaesthesia base.
  2. Hydrochloride salt for solubility and stability.
  3. Buffering agents.
  4. Preservatives; e.g., Methyl Paraben

Read: Mechanism of Action

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