Table 1 Influence of incidental parathyroidectomy on the risk of transient hypocalcemia and permanent hypoparathyroidism. Serum calcium and parathyroid hormone levels after total thyroidectomy

Serum calcium level at POD1 (mg/dL)^a

8.74 ± 0.8

8.62 ± 0.8

8.78 ± 0.4

< 0.001

Parathormone level at 20 min (pg/mL)^a

24.2 ± 19.9

17.6 ± 15

25.4 ± 20.5

< 0.001

Biochemical hypocalcemia at POD1 ƚ

165 (10.8%)

40 (17.1%)

125 (9.6%)

< 0.001

1.94 (1.31–2.85)

Transient hypocalcemia

192 (12.5%)

42 (17.9%)

150 (11.5%)

0.006

1.68 (1.16–2.45)

Permanent hypoparathyroidism

32 (2.1%)

11 (4.7%)

21 (1.6%)

0.002

3.01 (1.29–6.63)