Final answer:
The symptoms exhibited by the patient suggest hypocalcemia, likely due to hypoparathyroidism after thyroidectomy surgery.
Step-by-step explanation:
In the clinical scenario of a 65-year-old female patient who is postoperative day 1 following a thyroidectomy, the symptoms of tingling lips and fingers, intermittent spasms in the wrist and hand, and increased muscle tone are suggestive of hypocalcemia. These symptoms can be indicative of a condition known as tetany, which is often associated with hypoparathyroidism. This condition can occur as a complication of thyroid surgery when the parathyroid glands are accidentally removed or damaged, leading to a deficiency in parathyroid hormone and a subsequent drop in calcium levels.