Table 2.

Summary data comparing total laryngectomy and control subjects.

Parameter	TL	Control	p-value
Velopharynx
Duration (s)	1.45 ± 0.40	0.86 ± 0.25	0.012
Rise rate (mmHg/s)	306 ± 127	1023 ± 479	0.005
Maximum pressure (mmHg)	196 ± 41	203 ± 64	0.821
3D integral (mmHg*s)	272 ± 85	203 ± 73	0.163
Mesopharynx
Duration (s)	0.87 ± 0.25	0.65 ± 0.29	0.093
Rise rate (mmHg/s)	352 ± 158	600 ± 343	0.093
Maximum pressure (mmHg)	124 ± 30	203 ± 40	0.003
3D integral (mmHg*s)	125 ± 57	138 ± 33	0.485
Pre-opening UES pressure peak
Maximum pressure (mmHg)	33 ± 12	123 ± 33	0.002
3D integral (mmHg*s)	63 ± 26	269 ± 82	0.002
Post-closure UES pressure peak
Maximum pressure (mmHg)	79 ± 74	252 ± 62	0.001
3D integral (mmHg*s)	122 ± 93	400 ± 137	0.002
Upper esophageal sphincter
Minimum pressure (mmHg)	4 ± 6	−3 ± 4	0.054
Activity time (s)	1.16 ± 0.27	1.46 ± 0.38	0.147
Nadir duration (s)	0.47 ± 0.23	0.68 ± 0.14	0.086
3D integral (mmHg*s)	66 ± 18	231 ± 162	0.015
Total swallow duration (s)	1.41 ± 0.34	1.18 ± 0.31	0.244

Values are presented as mean ± standard deviation. UES = upper esophageal sphincter; 3D = three-dimensional.