Anesthesia Technologist Practice Exam

What is a unique characteristic of Tetracaine, a common drug used for spinal anesthesia?

1. Comes only in liquid form

2. Only available in crystallized powder form

3. Can be mixed with Dextrose for hyperbaric solutions

4. Only mixed with sterile water

The correct answer is: Can be mixed with Dextrose for hyperbaric solutions

Tetracaine is known for its unique property of being able to be mixed with Dextrose to create hyperbaric solutions, which allows it to be used effectively in spinal anesthesia. Hyperbaric solutions have a density greater than that of cerebrospinal fluid, which helps in achieving more precise control over the area of anesthesia by allowing the anesthetic to settle in a targeted region after injection. This characteristic is particularly useful in clinical practice, as it enhances the anesthetic's effectiveness during procedures by providing predictable spread and duration of effect. The other options do not accurately reflect the properties of Tetracaine. While Tetracaine can come in various formulations, it is not exclusively available in one specific form, as there are liquid and powder forms available. Mixing Tetracaine only with sterile water is a limitation that doesn't capture its versatility in formulations, especially where Dextrose is utilized for enhanced performance in spinal procedures.