Table 3.

Summary data evaluating changes in manometric parameters due to bolus characteristics within total laryngectomy subjects.

Parameter	5 cc liquid	10 cc liquid	20 cc liquid	p-value
Velopharynx
Duration (s)	1.39 ± 0.49	1.45 ± 0.40	1.51 ± 0.41	0.319
Rise rate (mmHg/s)	448 ± 349	306 ± 127	278 ± 99	0.270
Maximum pressure (mmHg)	204 ± 46	196 ± 41	198 ± 47	0.142
3D integral (mmHg*s)	270 ± 79	272 ± 85	281 ± 105	0.652
Mesopharynx
Duration (s)	0.89 ± 0.31	0.88 ± 0.25	0.88 ± 0.35	0.946
Rise rate (mmHg/s)	387 ± 165	352 ± 158	285 ± 161	0.011
Maximum pressure (mmHg)	128 ± 27	124 ± 30	115 ± 36	0.032
3D integral (mmHg*s)	132 ± 58	125 ± 57	106 ± 41	0.328
Pre-opening UES pressure peak
Maximum pressure (mmHg)	31 ± 8	33 ± 12	32 ± 13	0.892
3D integral (mmHg*s)	58 ± 30	63 ± 26	62 ± 20	0.831
Post-closure UES pressure peak
Maximum pressure (mmHg)	82 ± 80	79 ± 74	74 ± 71	0.125
3D integral (mmHg*s)	125 ± 103	122 ± 93	124 ± 100	0.697
Upper esophageal sphincter
Minimum pressure (mmHg)	3 ± 6	4 ± 6	5 ± 3	0.500
Activity time (s)	1.02 ± 0.35	1.16 ± 0.27	1.16 ± 0.35	0.695
Nadir duration (s)	0.49 ± 0.23	0.47 ± 0.23	0.36 ± 0.20	0.335
3D integral (mmHg*s)	56 ± 22	66 ± 18	68 ± 26	0.355
Total swallow duration (s)	1.35 ± 0.33	1.41 ± 0.34	1.41 ± 0.29	0.580

Values are presented as mean ± standard deviation. UES = upper esophageal sphincter.