The question refers to Local Anesthetic Systemic Toxicity (LAST), not last anesthesia. LAST is a serious but rare complication of local anesthetic use. The symptoms of LAST can vary and may not occur in all patients.
Here's a breakdown of potential symptoms, based on the provided reference:
Symptoms of Local Anesthetic Systemic Toxicity (LAST)
LAST symptoms can present in various ways, starting with subtle signs and progressing to more severe manifestations. These symptoms include:
- Early Signs:
- Tinnitus: Ringing or buzzing in the ears.
- Metallic Taste: A peculiar metallic taste in the mouth.
- Hallucinations: Experiencing things that are not actually present.
- Slurred Speech: Difficulty speaking clearly.
- Limb Twitching: Involuntary muscle spasms in the limbs.
- Extremity Paresthesia: Numbness, tingling, or prickling sensation in the extremities.
- Intention Tremor: Shaking that occurs when trying to perform a purposeful movement.
- More Advanced Signs
- Facial Sensorimotor and Eye Movement Abnormalities: Issues with facial muscle control, sensation, and eye movements.
- Hypertension and Tachycardia: Increased blood pressure and rapid heart rate, though these may not be consistent findings in every case.
Table Summary of LAST Symptoms
| Category | Symptoms |
|---|---|
| Early Neurological | Tinnitus, Metallic taste, Hallucinations, Slurred speech |
| Neuromuscular | Limb twitching, Extremity paresthesia, Intention tremor |
| Advanced Neurological | Facial sensorimotor and eye movement abnormalities |
| Cardiovascular | Hypertension, Tachycardia (may not occur in all patients) |
It's important to note that the progression of LAST symptoms can be rapid, and if suspected, immediate medical intervention is essential. Recognizing these signs early can lead to better patient outcomes.
