Final answer:
The seizure in the 2-year-old child after corrective surgery for Tetralogy of Fallot is most likely due to a cerebral vascular accident or stroke. The symptoms reported by the mother, including severe headache, high fever, stiff neck, confusion, and drowsiness, are consistent with the possibility of meningitis, a serious infection of the tissue surrounding the brain and spinal cord.
Step-by-step explanation:
The seizure in the 2-year-old child after corrective surgery for Tetralogy of Fallot is most likely due to cerebral vascular accident. A cerebral vascular accident, also known as a stroke, occurs when there is a loss of oxygen to a specific part of the central nervous system. The symptoms of severe headache, high fever, stiff neck, confusion, and drowsiness reported by the mother are consistent with the possibility of meningitis, a potentially life-threatening infection of the tissue surrounding the brain and spinal cord.