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Table 4 Exhaled carbon monoxide, end tidal CO2, and peripheral oxygen saturation.

From: Effects of acute hypoventilation and hyperventilation on exhaled carbon monoxide measurement in healthy volunteers

Et-CO2 target

30 mmHg (hyperventilation)

40 mmHg (normoventilation)

50 mmHg (hypoventilation)

Inspiration

Normal

Deep

Normal

Deep

Normal

eCO (ppm)

10.3 (0.8)

9.7 (0.8)

11.5 (0.8)

10.8 (0.8)

11.9 (0.8)

Pre-test etCO 2 (mmHg)

29.4 (1.6)

28.7 (1.6)

39.4 (1.7)

39.2 (1.7)

49.1 (1.7)

Test etCO 2 (mmHg)

37.8 (2.5)

35.6 (2.8)

46.1 (3.3)

43.0 (2.9)

51.6 (3)

SpO 2 (%)

99 (1)

98 (1)

96 (2)

  1. Means (standard deviations) of exhaled carbon monoxide (eCO) values, end tidal CO2 values measured before and during breath sampling (respectively pre-test etCO2 and test etCO2), and peripheral oxygen saturation (SpO2).
  2. Statistical analysis. EtCO2: pre-test Vs test p < 0.01. SpO2: ANOVA p < 0.01; hyperventilation Vs normoventilation p < 0.01; hyperventilation Vs normoventilation p < 0.01.
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BMC Pulmonary Medicine

ISSN: 1471-2466

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