Table 3.
Effect of Valsalva on heart rate, IOP, and POBF
| Normal | NTG | POAG | p Value | |
| Mean Valsalva heart rate (SD), (bpm) (n=60) | 82.3 (15.4) | 71.6 (10.8) | 82.9 (14.2) | 0.025 |
| Mean change in heart rate (SD), (bpm) (n=60) | 10.3 (11.6) | 6.6 (7.1) | 11.3 (9.6) | NS |
| Mean Valsalva IOP (SD), (mm Hg) (n=61) | 18.1 (4.0) | 16.5 (5.1) | 22.7 (5.6) | 0.001 |
| Mean change in IOP (SD) (mm Hg) (n=61) | +2.1 (2.4) | +0.9 (2.5) | −0.6 (1.8) | 0.002 |
| Mean Valsalva POBF (SD) (μl/min) (n=58) | 773.4 (221.9) | 739.7 (328.1) | 537.8 (512.1) | NS |
| Mean fall in POBF (SD), (μl/min) (n=58) | 375.0 (311.0) | 221.0 (259.5) | 334.7 (374.4) | NS (0.294 unadjusted 0.542 adjusted) |
NS = non-significant at 5% level.
Note: refer to text for explanation of “adjusted” p values.