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

Table 1 Exhaled CO levels in smoking healthy subjects and patients with significant issues.

Authors	Diseases or smoking	Exhaled CO level (ppm)		N. Subjects
		Mean	Range or S.D. or 95% C.I.
Deveci et al (2004) [27]	Smoking	17.13	± 8.5	243
Carpagnano et al (2003)[28]	Smoking	16.70	± 5.5	31
Montuschi et al. (2001) [9]	COPD	7.40	± 1.9	15
Montuschi et al. (2001) [9]	COPD + Smoking	20.0	± 2.6	15
Biernacki et al (2001) [12]	LRTI	5.20	± 0.5	35
Yamaya et al (1998) [29]	URTI	5.60	± 0.4	20
Ohara Y et al (2006) [7]	Asthma	5.10	± 0.4	22
Kiyoshi et al (1997) [30]	Asthma	5.60	± 0.6	12
Paredi et al (1999) [31]	CF	6.70	± 0.6	29
Horvath et al. (2003) [32]	Bronchiectasis	5.00	3.0 - 15.0	31
De Las Heras et al (2003) [33]	SBP	7.00	± 0.5	9

COPD chronic obstructive pulmonary disease; LRTI lower respiratory tract infection; URTI upper respiratory tract infections; CF cystic fibrosis; SBP spontaneous bacterial peritonitis;

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