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Table 2 Operative and Postoperative parameters between 2 groups

From: Harmonic focus in total thyroidectomy plus level III-IV and VI dissection: a prospective randomized study

Variable Focus Group
(n = 51)
Classic Group
(n = 54)
P -value
Primary tumor size(mm) 6.9 ± 2.5 6.6 ± 2.9 > 0.05
Total operating time(min) 102.8 ± 15.6 150.1 ± 32.9 < 0.05
Time of total    
   thyroidectomy(min) 43.5 ± 16.1 69.6 ± 24.6 <0.05
Amount of drainage(ml) 202.7 ± 187.0 299.7 ± 201.4 < 0.05
Time of drainage(d) 5.5 ± 2.5 5.9 ± 2.2 >0.05
Serum PTH (ng/L)    
preoperative 46.90 ± 18.58 43.87 ± 17.21 >0.05
Postoperative 20.6 ± 14.3 19.06 ± 16.88 >0.05
Serum Ca (mmol/L)    
preoperative 2.37 ± 0.14 2.29 ± 0.23 >0.05
postoperative 2.10 ± 0.18 2.07 ± 0.26 >0.05
Serum P (mmol/L)    
preoperative 1.35 ± 0.32 1.38 ± 0.37 >0.05
postoperative 1.44 ± 0.27 1.47 ± 0.29 >0.05
Hypoparathyroidism 9 10 >0.05.
Postoperative    
   hospitalization (d) 5.8 ± 1.35 6.7 ± 1.86 <0.05
Parathyroid gland    
   autotransplantation(n) 14 16 >0.05.
RLN paralysis    
   Temporary(n) 1 0 <0.05
   Permanent 0 0  
Superior laryngeal nerve injury 0 0  
Lymphatic ducts injured    
   chyle leakage(n) 1 1 >0.05
  1. Abbreviations: PTH, parathyroid hormone; RLN, recurrent laryngeal nerve.