Abstract
Introduction: Studies of the lung function profiles of ENS are few, have some methodologic limits and present contradictory conclusions.
Aim: To Compare the plethsymographic profiles of an ENS group with these of two control groups: ECS and healthy non-smokers subjects (HNS).
Population: Inclusion criteria for ENS group: males aged 35-60 Yr; smoking >10 narghile-year (NA), no history of cigarettes smoking. Definitions: obstructive ventilatory defect (OVD): FEV1/FVC < LLN. Restrictive ventilatory defect (RVD): TLC < LLN. Mixed ventilatory defect: FEV1/FVC and TLC < LLN. Non specific ventilatory defect: FEV1 and FVC < LLN but TLC > LLN. Lung hyperinflation: RV > ULN. Estimated lung age was calculated. Plethysmographic measures were made. Two control groups were included: ECS more than 10 paquets-years (PA) and HNS.
Results: Compared to the HNS group, the ENS group includes significantly higher percentages of subjects having lower expiratory flows or OVD or RVD or lung hyperinflation. Compared to the ECS group, the ENS group includes significantly lower percentages of subjects having lower expiratory flows or OVD or lung hyperinflation. Cigarettes and narghile smoking accelerate lung ageing with significantly higher estimated lung ages.
Conclusion: The plethysmographic profile of ENS is different from this of ECS and narghile consumption accelerates, lesser than cigarettes smoking, lung ageing.
- © 2011 ERS