Anesthesia Technologist Practice Exam

When performing a nerve block with a nerve stimulator, what should be the initial current range?

1. 0.5 to 1.0 mA

2. 1.0 to 1.5 mA

3. 1.5 to 2.0 mA

4. 2.0 to 2.5 mA

The correct answer is: 1.0 to 1.5 mA

The initial current range for performing a nerve block with a nerve stimulator is typically set between 1.0 to 1.5 mA. This range is chosen to ensure effective stimulation of the nerve without causing excessive discomfort to the patient. In this range, the likelihood of eliciting a clear motor response from the targeted nerve is high, which is critical for both confirming correct needle placement and ensuring that the anesthetic is delivered close to the nerve. Setting the current too low can result in insufficient stimulation, which could lead to difficulties in confirming the appropriate nerve location, while setting it too high may cause unnecessary pain and anxiety for the patient. Thus, beginning with a moderate current allows for a balance between efficacy and patient comfort, making it an essential aspect of performing nerve blocks safely and effectively.