What is the mnemonic used to remember symptoms of CNS oxygen toxicity?

The correct answer is associated with the mnemonic VENTID-C, which serves as a helpful tool for recalling the specific symptoms of central nervous system (CNS) oxygen toxicity. This condition can arise when a diver is exposed to elevated partial pressures of oxygen, often experienced during deep diving or when using breathing gases with a high oxygen content.

Each letter in VENTID-C corresponds to a symptom:

• V for Visual changes or disturbances

• E for Ear ringing or tinnitus

• N for Nausea

• T for Twitching or muscle spasms

• I for Irritability

• D for Dizziness

• C for Convulsions

Using this mnemonic allows divers and diving supervisors to quickly recall the symptoms to monitor while working in environments where CNS oxygen toxicity may pose a risk, thereby promoting safety and prompt action.

In contrast, other options do not specifically relate to the symptoms of CNS oxygen toxicity, which is why they aren't as effective for this purpose. While other mnemonics may exist for different conditions or topics in diving medicine, VENTID-C is specifically tailored to the effects of oxygen toxicity on the central nervous system. This specificity makes it the most appropriate choice for this question.