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TABLE 1: Physiologic data in 133 patients measured during SPECT scanning at rest and with an acetazolamide challenge
Value At Rest Acetazolamide Challenge
pH 7.39 ± 0.03 7.39 ± 0.04
PaCO₂, mm Hg 41.8 ± 2.8 41.0 ± 2.5
PaO₂, mm Hg 94.1 ± 2.7 94.9 ± 4.0
Mean blood pressure, mm Hg 96.1 ± 7.1 96.9 ± 8.1
Note.—Data are the mean ± SD.
Value	At Rest	Acetazolamide Challenge
pH	7.39 ± 0.03	7.39 ± 0.04
PaCO₂, mm Hg	41.8 ± 2.8	41.0 ± 2.5
PaO₂, mm Hg	94.1 ± 2.7	94.9 ± 4.0
Mean blood pressure, mm Hg	96.1 ± 7.1	96.9 ± 8.1