Tobacco Use
Conditions
Keywords
Cigarette smoking, Nicotine Content, Cardiovascular Disorders
Brief summary
The study is measuring Cardiovascular effects of very low nicotine content cigarettes on daily and non-daily smokers
Detailed description
The FDA is planning regulatory actions to limit nicotine levels in cigarettes as far as it is not reduced to zero. The strategy is designed to reduce the addictiveness of cigarettes. However, nicotine related effects of the cigarettes with reduced nicotine content on various body systems are largely unknown. Following formal implementation of the regulatory policy what cardiovascular effects of reduced nicotine cigarettes, also called very low nicotine content cigarettes (VLNCC) are expected to persist is important to determine. This study will determine the cardiovascular effects of VLNCC such as change in heart rate, autonomic functions and indices of ventricular repolarization in smokers. Participants will be asked to smoke two VLNCC and one normal nicotine content cigarette (NNCC) while we will be recording their electrocardiogram (ECG) to see a change in heart rate, heart rate variability and indices of ventricular repolarization.
Interventions
SPECTRUM cigarettes have varying amount of nicotine content
Usual Brand of Cigarettes
Sponsors
Wake Forest University Health Sciences
Study design
Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
SINGLE (Subject)
Masking description
Participants will be blinded to content of nicotine in cigarettes
Intervention model description
Within Subject
Eligibility
Sex/Gender
ALL
Age
21 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Self-reported cigarette smoking at least once in the past 30 days * ≥21 years old * Willingness to smoke research cigarettes or usual brand cigarettes during lab visit. * Ability to speak, comprehend, and read English sufficiently to complete study procedures
Exclusion criteria
* Self-reported diagnosis of cardiovascular diseases like coronary artery disease, stroke, peripheral artery disease, cardiac arrhythmia, pulmonary embolism \& blood clots in legs and arm in the past 3 months * Body temperature ≥ 100.4˙F * Unstable health conditions interfering with electrocardiogram (ECG) measurements * Self-reported diagnosis of hyperthyroidism or thyrotoxicosis * Currently pregnant (as indicated by urine pregnancy test at the start of laboratory visit) or breastfeeding. * Currently seeking treatment to quit smoking
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Heart rate - Very Low Nicotine Content Cigarettes (VLNCC)s - NRC301/302(2.4mg nicotine) | Hour 1 | Change in heart rate from pre-exposure to post-exposure for the Very Low Nicotine Content Cigarettes (VLNCC)s - NRC301/302(2.4mg nicotine) |
| Change in Heart rate - Normal Nicotine Content Cigarettes (NNCC)s - NRC600/601(15.8mg nicotine) | Hour 1 | Change in heart rate from pre-exposure to post-exposure for the normal nicotine content cigarettes (NNCC)s - NRC600/601(15.8mg nicotine) |
| Change in Heart rate - Very Low Nicotine Content Cigarettes (VLNCC)s - NRC102/103(0.5mg nicotine) | Hour 1 | Change in heart rate from pre-exposure to post-exposure for the Very Low Nicotine Content Cigarettes (VLNCC)s - NRC102/103(0.5mg nicotine) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in Heart rate variability(HRV) - Very Low Nicotine Content Cigarettes (VLNCC)s - NRC301/302(2.4mg nicotine) | Hour 1 | Change in measures of heart rate variability (HF, LF, LF/HF, RMSSD = root mean square of standard deviation; SDNN = standard deviation of normal-to-normal intervals, Total power) from pre-exposure to post-exposure for the Very Low Nicotine Content Cigarettes (VLNCC)s |
| Change in Heart rate variability(HRV) - Normal Nicotine Content Cigarettes (NNCC)s - NRC600/601(15.8mg nicotine) | Hour 1 | Change in measures of heart rate variability (HF, LF, LF/HF, RMSSD = root mean square of standard deviation; SDNN = standard deviation of normal-to-normal intervals, Total power) from pre-exposure to post-exposure for the Normal Nicotine Content Cigarettes (NNCC)s |
| Change in electrocardiogram (ECG) Measures - Very Low Nicotine Content Cigarettes (VLNCC)s - NRC102/103(0.5mg nicotine) | Hour 1 | Measures of ventricular repolarization (Q-T interval, QTc, Tp-e interval)from pre-exposure to post-exposure for the Very Low Nicotine Content Cigarettes (VLNCC)s |
| Change in electrocardiogram (ECG) Measures - Very Low Nicotine Content Cigarettes (VLNCC)s - NRC300/301(2.4mg nicotine) | Hour 1 | Measures of ventricular repolarization (Q-T interval, QTc, Tp-e interval)from pre-exposure to post-exposure for the Very Low Nicotine Content Cigarettes (VLNCC) s |
| Change in electrocardiogram (ECG) Measures - Normal Nicotine Content Cigarettes (NNCC)s - NRC600/601(15.8mg nicotine) | Hour 1 | Measures of ventricular repolarization (Q-T interval, QTc, Tp-e interval)from pre-exposure to post-exposure for the Normal Nicotine Content Cigarettes (NNCC)s |
| Change in Heart rate variability(HRV) - Very Low Nicotine Content Cigarettes (VLNCC)s - NRC102/103(0.5mg nicotine) | Hour 1 | Change in measures of heart rate variability (HF, LF, LF/HF, RMSSD = root mean square of standard deviation; SDNN = standard deviation of normal-to-normal intervals, Total power) from pre-exposure to post-exposure for the Very Low Nicotine Content Cigarettes (VLNCC)s |
Countries
United States
Contacts
CONTACTMaria Anwar, MS
PRINCIPAL_INVESTIGATOREric C Donny, PhD
Wake Forest University Health Sciences
Outcome results
None listed