Interprétation des valeurs du CO expiré en tabacologie

Underner, M.; Peiffer, G.

doi:10.1016/j.rmr.2009.09.004

Cited by 42 publications

(15 citation statements)

References 23 publications

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“…For example, lactose intolerance (McNeill, Owen, Belcher, Sutherland, & Fleming, 1990) as well as several clinical disorders including types 1 and 2 diabetes, asthma, chronic obstructive pulmonary disorder, and bronchiectasis have all been found to increase expired breath CO levels (Underner & Peiffer, 2010). Unfortunately, these variables were not assessed in the current study.…”

Section: Discussionmentioning

confidence: 80%

The Accuracy of a Lower-Cost Breath Carbon Monoxide Meter in Distinguishing Smokers from Non-smokers

et al. 2014

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Section: Discussionmentioning

confidence: 80%

The Accuracy of a Lower-Cost Breath Carbon Monoxide Meter in Distinguishing Smokers from Non-smokers

et al. 2014

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“…Mean values of ambCO for the last 2, 4 and 6 h before the measurement of the exhCO at the end of the working day were also compared using t-test. This range of time was used relative to the half life of CO which is 2 to 6 h depending on physiologic factors such as respiratory rate, making it a potential marker of recent exposure [13, 14]. A linear regression analysis was developed to assess the association between exhCO at the end of the shift and the ambCO for the last 2, 4 and 6 h of exposure.…”

Section: Methodsmentioning

confidence: 99%

“…Hence, it is conceivable that it could be used as an index of exposure to other air pollution sources other than tobacco smoking such as ambient air pollution which contains CO. CO rapidly combines with hemoglobin to form carboxyhemoglobin when inhaled; and its concentration in ambient air and duration of exposure are the most important determinants of carboxyhemoglobin saturation [11, 12]. The half-life of inhaled CO varies from 2 to 6 h depending on physiologic factors such as respiratory rate, making it a potential marker of recent exposure [13, 14]. Few studies have evaluated the correlation between exhCO with exposures from CO in solid fuels used in the households [15, 16], but none examined its relationships with OAP exposures.…”

Section: Introductionmentioning

confidence: 99%

Exhaled carbon monoxide: a non-invasive biomarker of short-term exposure to outdoor air pollution

et al. 2017

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BackgroundIn urban settings of Africa with rapidly increasing population, traffic-related air pollution is a major contributor to outdoor air pollution (OAP). Although OAP has been identified as a leading cause of global morbidity and mortality, there is however, lack of a simple biomarker to assess levels of exposure to OAP in resource-poor settings. This study evaluated the role of exhaled carbon monoxide (exhCO) as a potential biomarker of exposure to ambient carbon monoxide (ambCO) from OAP.MethodsThis was a descriptive study conducted among male commercial motorcycle riders in Cotonou – the economic capital of Benin. The participants’ AmbCO was measured using a portable carbon monoxide (CO) data logger for 8 h during the period of their shift. ExhCO was measured just before and immediately after their shift (8-h) Participants were asked not to cook or to smoke during the day of the measurements. Linear regression analysis was used to assess the association between ambCO and exhCO for the last 2, 4 and 6 h of their shift.ResultsOf 170 participants who completed the study, their mean ± SD age was 42.2 ± 8.4 years, and their mean ± SD daily income was 7.3 ± 2.7$. Also, 95% of the participants’ used solid fuels for cooking and only 2% had ever smoked. Average exhCO increased by 5.1 ppm at the end of the shift (p = 0.004). Post-shift exhCO was significantly associated to ambCO, this association was strongest for the last 2 h of OAP exposure before exhCO measurement (β = 0.34, p < 0.001).ConclusionExhCO level was associated with recent exposure to ambCO from OAP with measurable increase after 8 h of exposure. These findings suggest that ExhCO may be a potential biomarker of short-term exposure to OAP.Electronic supplementary materialThe online version of this article (doi:10.1186/s12889-017-4243-6) contains supplementary material, which is available to authorized users.

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“…24 of them were cigarette smokers and 14 were passive cigarette smokers in the restaurants, 20 were shisha smokers and 12 were passive shisha smokers from shisha bars. Background information regarding their age, gender, occupation, smoking habits and illicit drug use including alcohol [7] was taken. People with a history of diabetes, asthma, COPD or having any other respiratory ailments were excluded [7,8].…”

Section: Methodsmentioning

confidence: 99%

“…Background information regarding their age, gender, occupation, smoking habits and illicit drug use including alcohol [7] was taken. People with a history of diabetes, asthma, COPD or having any other respiratory ailments were excluded [7,8]. The study population was divided into 4 groups.…”

Section: Methodsmentioning

confidence: 99%

Comparison of end tidal carbon monoxide (eCO) levels in shisha (water pipe) and cigarette smokers

Akhter¹,

Warraich²,

Rizvi³

et al. 2014

Tobacco Induced Diseases

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BackgroundMeasuring eCo is rapid, non-invasive and inexpensive tool and correlate correctly with carboxyhemoglobin levels in blood. The aim of this study was to evaluate and compare the increase in end tidal carbon monoxide (eCO) levels in exhaled breath of passive smokers and healthy smokers after cigarette and shisha smoking.FindingsIn a cross sectional study eCO levels were measured in 70 subjects (24 cigarette smokers, 20 shisha smoker, 26 passive smokers) by use of portable device. Smokers were asked to smoke shisha for 30 mins in shisha cafe or to smoke 5 cigarettes in 30 mins in a restaurant. eCo levels were measured at baseline (30 mins), 35 mins, 60 mins and 90 mins in all groups after entry to the venue. The baseline mean eCO level among cigarette smokers was 3.5 +/- 0.6 ppm (part per million), passive cigarette smokers 3.7+/-1.0 ppm, shisha smokers 27.7+/-4.9 ppm and passive shisha smokers 18.3+/-8.4 ppm .The mean increase in eCO after 90 min among smokers was 9.4+/-4.6 (p < 0.005), passive cigarette smokers 3.5+/-2.5 (p < 0.05), shisha smokers 57.9+/-27.4 (p <0.005) and passive shisha smokers 13.3+/-4.6 (p = 0.03).ConclusionExposure to shisha smoke is a cause of elevated eCO in smokers and passive smokers and due to in-door pollution, sitting in shisha bar causes significant increase in eCO levels.

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Interprétation des valeurs du CO expiré en tabacologie

Cited by 42 publications

References 23 publications

The Accuracy of a Lower-Cost Breath Carbon Monoxide Meter in Distinguishing Smokers from Non-smokers

The Accuracy of a Lower-Cost Breath Carbon Monoxide Meter in Distinguishing Smokers from Non-smokers

Exhaled carbon monoxide: a non-invasive biomarker of short-term exposure to outdoor air pollution

Comparison of end tidal carbon monoxide (eCO) levels in shisha (water pipe) and cigarette smokers

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