Accidental awareness under general anesthesia (AAGA) occurs when a patient becomes conscious during surgery while under anesthesia. Though rare—affecting approximately 1 in 19,000 patients—those who experience it might have some level of awareness, from vague sensations to full consciousness.
Causes of AAGA
- Inadequate Anesthesia: Errors in dosage, equipment malfunction, or the patient's physiology affecting drug metabolism.
- High-Risk Surgeries: Trauma, emergency C-sections, or procedures requiring light anesthesia to maintain vital signs.
- Patient Factors: Certain medications, substance tolerance, or conditions like ADHD or obesity.
What Patients Experience
- Sounds, pressure, or conversations.
- Paralysis due to muscle relaxants, often leading to distress.
- Pain, though less commonly reported.
Psychological Impact
- Anxiety, PTSD, or long-term distress in severe cases.
- The experience may be immediate or surface as a memory later.
Prevention & Management
- Advanced brain monitoring tools.
- Improved anesthetic protocols and patient screening.
- Psychological support if awareness occurs.
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