Table 2.

Operative and postoperative data in harmonic scalpel (HS) and conventional hemostasis (CH) groups.

	HS group (n = 31)	CH group (n = 30)	P value
Operative time (mean ± SD), min
mRND	113.9 ± 17.3	149.5 ± 18.7	<0.001
SND	57.5 ± 14.9	86.1 ± 20.6	<0.001
Intraoperative blood loss, mL
mRND	149.2 ± 26.8	201.9 ± 34.2	<0.001
SND	61.7 ± 20.1	97.9 ± 31.5	<0.001
Total drainage fluid volume, mL
mRND	237.4 ± 12.4	356.1 ± 24.7	<0.001
SND	129.3 ± 28.1	238.9 ± 30.6	<0.001
Postoperative pain
VAS at 24 h
mRND	4.89 ± 1.07	6.82 ± 1.43	<0.001
SND	4.27 ± 1.51	6.35 ± 2.04	<0.001
VAS at 48 h
mRND	1.98 ± 0.96	3.81 ± 1.37	<0.001
SND	1.76 ± 0.82	3.99 ± 1.45	<0.001
VRS at 24 h
mRND	2.91 ± 1.05	4.15 ± 1.94	<0.001
SND	2.84 ± 1.19	4.27 ± 1.59	<0.001
VRS at 48 h
mRND	1.06 ± 0.87	2.73 ± 0.71	<0.001
SND	0.95 ± 0.44	2.85 ± 1.03	<0.001
Mean hospital stay, days
Wide excision	9.2 ± 2.5	10.1 ± 2.8	0.467 NS
Free-flap reconstruction	24.9 ± 3.3	27.1 ± 3.4	0.579 NS
Partial laryngectomy	25.1 ± 2.9	28.0 ± 2.7	0.418 NS
Total laryngectomy	16.7 ± 2.1	17.4 ± 3.0	0.799 NS
Shoulder syndrome
Pain score (VAS)
mRND	3.46 ± 0.22	3.35 ± 0.15	0.924 NS
SND	1.15 ± 0.18	1.27 ± 0.33	0.871 NS
Motion score (VAS)
mRND	2.14 ± 0.51	2.21 ± 0.47	0.916 NS
SND	1.18 ± 0.44	1.06 ± 0.12	0.949 NS