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Table 1: Individual patient demographics and SVC manometry readings in 4 patients who underwent a catheter venogram
Venous Pressure (mm Hg)
Patient Age (yr)/Sex Indication BMI Rest Pressure Valsalva Normal Inspiration Mid-Resisted Inspiration End-Resisted Inspiration
1 57/F IIH 34.5 3 11 –1 –8 –16
2 63/M Pulsatile tinnitus 24.8 1 27 –1 –15 –26
3 69/F Pulsatile tinnitus 31.6 2 25 –6 –15 –31
4 52/F IIH 42.6 10 25 8 –2 –11
Note:—F indicates female; M, male; BMI, body mass index.

				Venous Pressure (mm Hg)
Patient	Age (yr)/Sex	Indication	BMI	Rest Pressure	Valsalva	Normal Inspiration	Mid-Resisted Inspiration	End-Resisted Inspiration
1	57/F	IIH	34.5	3	11	–1	–8	–16
2	63/M	Pulsatile tinnitus	24.8	1	27	–1	–15	–26
3	69/F	Pulsatile tinnitus	31.6	2	25	–6	–15	–31
4	52/F	IIH	42.6	10	25	8	–2	–11