CClinicalTrials.gg
CompletedNCT02937415Updated Oct 18, 2016

Carbon Monoxide and Oxidative Stress in Waterpipe Smokers

An interventional study of Breath carbon monoxide and Pulmonary function tests. in Waterpipe Smoking and Oxidative Stress, sponsored by Ataturk Training and Research Hospital. Completed. Open to participants aged 18 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-10-18.

Sponsored by Ataturk Training and Research Hospital · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
100
Allocation
Non-randomized
Ages
18 Years to 40 Years
Sex
All
01

Study summary

Waterpipe is a tool for smoking tobacco, which is thought to be less harmful than cigarette. Unfortunately, there aren't adequate studies about its harms to health that are threatening the young generation all over the world today. The objective of this study was to show the carbon monoxide (CO) levels in waterpipe smokers' breaths, whether can be used or not to reflect the changes of oxidative stress for this reason to predict harmful effects on the pulmonary functions.

Read the detailed description

Waterpipe or hookah uses a different kind of tobacco, which is available in most Balkan countries, Middle East and South Asia. Popularity of smoking waterpipe among European, Canadian, and American young people has shown a dramatic rise over the past decade. The growing popularity of waterpipe use among U.S. teens and adults is evidenced by media reports and the recent rapid proliferation of waterpipe establishments (bars, cafes, or restaurants) in large cities and near college campuses. Typical waterpipes have the following components; a bowl where the tobacco is placed and heated, usually with burning embers or charcoal, a vase or smoke chamber which is partially filled with water, a pipe or stem connecting the bowl to the vase by a tube that carries the smoke down into the water, and a hose with a mouthpiece through which the smoke is drawn from the vase. As the smoker inhales, the tobacco smoke is sucked down from the bowl and then bubbles up through the water into the air of the smoke chamber and then through the hose to the smoker. At the end of a smoking session, the dirty water is thrown away and the waterpipe vase is refilled for the next user. Although each smoking session generally lasts about 45 to 60 minutes, it can also continue for several hours.

There is a misconception about smoking waterpipe that it is less harmful than cigarettes, and that's why smoking waterpipe is dramatically increasing especially among young people. While the adverse effects of smoking cigarette are widely described, there are just a few investigations about waterpipe and its effects. This study was designed to investigate the effects of smoking waterpipe on pulmonary functions and oxidative stress parameters.

02

Conditions studied

  • Waterpipe Smoking
  • Oxidative Stress

Keywords

  • carbon monoxide
  • oxidative stress
  • waterpipe smoking
  • cigarette smoking
  • pulmonary function test
03

In context

Lead sponsor

Ataturk Training and Research Hospital is the lead sponsor of 23 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Participants who haven't determined major health problems,
  • between ages 18-40.

Exclusion criteria

Exclusion Criteria:

  • Participants who under age 18 and above 40,
  • pregnant women,
  • individuals who have major health problems
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
100 participants (actual)

Study arms

  • Experimental
    Waterpipe smokers group

    Three waterpipe cafes located in Ankara were visited. 50 waterpipe smokers aged 18-40 years, enrolled in the study and created the working group. At the same time, there were also cigarette smokers among these people. Breath carbon monoxide, pulmonary function tests were performed both before and after smoking waterpipe and parameters of oxidative stress and antioxidant status were measured in blood samples after smoking waterpipe.

    Procedure: Breath carbon monoxide · Procedure: Pulmonary function tests. · Procedure: Oxidative stress and antioxidant status.

  • Active comparator
    Control group

    The control group consisted of 50 people of the same age and sex, who had never smoked neither cigarette nor waterpipe. Breath carbon monoxide, pulmonary function tests were performed and parameters of oxidative stress were measured in blood samples.

    Procedure: Breath carbon monoxide · Procedure: Pulmonary function tests. · Procedure: Oxidative stress and antioxidant status.

Interventions

  • ProcedureBreath carbon monoxide

    Breath carbon monoxide measurement.

  • ProcedurePulmonary function tests.

    Measurement of lung functions by blowing through a tube which measures flow and volumes of participant's lungs.

    Also known as: Spirometry

  • ProcedureOxidative stress and antioxidant status.

    Measurement of parameters of oxidative stress and antioxidant status in blood samples.

06

What researchers measure

Primary outcomes

  1. Breath Carbon Monoxide Level

    Levels of CO in breath will be measured in either waterpipe smokers or control group.

    Time frame: Up to 4 months

Secondary outcomes

  1. A spirometric Test; FEV1 (Forced Expiratory Volume in One Second) Measurement.

    FEV1 Will Be Measured To Evaluation of Deterioration Levels of Pulmonary Functions in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  2. A spirometric Test; FVC (Forced Vital Capacity) Measurement.

    FVC Will Be Measured To Evaluation of Deterioration Levels of Pulmonary Functions in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  3. A spirometric Test; FEV1/FVC (Forced Expiratory Volume in One Second/Forced Vital Capacity) Measurement.

    FEV1/FVC Will Be Measured To Evaluation of Deterioration Levels of Pulmonary Functions in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  4. A spirometric Test; PEF (Peak Expiratory Flow) Measurement.

    PEF Will Be Measured To Evaluation of Deterioration Levels of Pulmonary Functions in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  5. A spirometric Test; FEF25-75 (Forced Expiratory Flow in 25-75%) Measurement.

    FEF25-75 Will Be Measured To Evaluation of Deterioration Levels of Pulmonary Functions in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  6. Plasma TAS (Total Anti-Oxydant Status) Measurement.

    To Assessment of Anti-Oxidant Status: TAS Levels in Plasma Will Be Measured in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  7. Plasma TOS (Total Oxydative Stress) Measurement.

    To Assessment of Oxidative Stress: TOS Levels in Plasma Will Be Measured in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  8. Plasma OSI Measurement.

    To Assessment of Antioxidant Status: TAS (Total Anti-oxydative Status) Levels in Plasma Will Be Measured in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  9. Plasma PON (Paraoxonase) Measurement.

    To Assessment of Antioxidant Status: PON Levels in Plasma Will Be Measured in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  10. Plasma sPON (Stimulated Paraoxonase) Measurement.

    To Assessment of Antioxidant Status: sPON Levels in Plasma Will Be Measured in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

  11. Plasma ARES (Arylesterase) Measurement.

    To Assessment of Arylesterase Activity: ARES Levels in Plasma Will Be Measured in Either Waterpipe Smokers or Control Group.

    Time frame: Up to 4 months

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Mokdad AH, Warren CW. As if cigarettes were not enough, here comes narghile. A commentary on an article by Yunis et al. in IJPH 52/4. Int J Public Health. 2007;52(5):263-4. doi: 10.1007/s00038-007-0221-6. No abstract available. PubMed 18030938 ↗
  • Maziak W. The global epidemic of waterpipe smoking. Addict Behav. 2011 Jan-Feb;36(1-2):1-5. doi: 10.1016/j.addbeh.2010.08.030. Epub 2010 Oct 8. PubMed 20888700 ↗
  • Maziak W, Ward KD, Afifi Soweid RA, Eissenberg T. Tobacco smoking using a waterpipe: a re-emerging strain in a global epidemic. Tob Control. 2004 Dec;13(4):327-33. doi: 10.1136/tc.2004.008169. PubMed 15564614 ↗
  • Dugas E, Tremblay M, Low NC, Cournoyer D, O'Loughlin J. Water-pipe smoking among North American youths. Pediatrics. 2010 Jun;125(6):1184-9. doi: 10.1542/peds.2009-2335. Epub 2010 May 10. PubMed 20457679 ↗
  • Shafagoj YA, Mohammed FI. Levels of maximum end-expiratory carbon monoxide and certain cardiovascular parameters following hubble-bubble smoking. Saudi Med J. 2002 Aug;23(8):953-8. PubMed 12235470 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 18, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02937415
Lead sponsor
Ataturk Training and Research Hospital
Responsible party
Mukremin Er (Mukremin Er, MD., Ataturk Training and Research Hospital) — Principal investigator
First posted
Oct 18, 2016
Start date
Jul 2012
Primary completion
Dec 2012
Completion
Jan 2013
Last update
Oct 18, 2016

Study contacts

Ozcan Erel, Prof. M.D.
study director · Ankara Yildirim Beyazit University, Medical School, Director of Biochemistry Department, Ankara, Turkey

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2016. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion