Hypocalcemia after total thyroidectomy is usually transient but it is of main concern as it
requires either prolonged stay in the hospital or readmission. During the first 24 hours
bleeding is the main complication, but from the second day to six months, transient
hypocalcemia is of main concern. Hypocalcemia can be evaluated symptomatically as well as
from laboratory testing. Signs and symptoms of hypocalcemia include numbness, tingling, and
carpopedal spasm. Preoperative vitamin D prevents postoperative transient hypocalcemia after
thyroidectomy .