Smoking and Ventricular Repolarization

NCT ID: NCT03916341

Last Updated: 2023-10-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

110 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-10-01

Study Completion Date

2023-04-10

Brief Summary

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Randomized controlled trial of acute use of electronic cigarette or tobacco cigarette on parameters of ventricular repolarization.

Detailed Description

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Non-user or chronic electronic cigarette (EC) users will use an EC or control on three occasions:1) EC with nicotine, 2) EC without nicotine, 3) empty EC (control).

Chronic tobacco cigarette (TC) smokers will use a TC or control on three occasions: 1) TC with nicotine (subject's own brand), 2) research TC with very low nicotine, 3) straw (control). The electrocardiogram will be recorded before and after acute exposures and analyzed for parameters representative of ventricular repolarization.

Conditions

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Sudden Cardiac Death Prolonged QTc Interval

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Crossover with 4 week washout
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Outcome Assessors
Single (outcomes assessor) code

Study Groups

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Chronic TC smoker

Chronic TC smokers will use, in a randomized, crossover fashion with a 4 week washout, a 1) TC with nicotine (own brand), 2) research TC with very low level nicotine, and 3) a straw (control)

Group Type EXPERIMENTAL

control

Intervention Type OTHER

sham control

TC with nicotine (own brand)

Intervention Type OTHER

smoke a TC

research TC with very low level nicotine

Intervention Type OTHER

smoke a research TC with very low level nicotine

Non-user

Non- users will use, in a randomized, crossover fashion with a 4 week washout, an 1) EC with nicotine, 2) EC without nicotine, and 3) an empty EC (control)

Group Type EXPERIMENTAL

EC with nicotine

Intervention Type OTHER

Use an EC with nicotine for up to 30 minutes

EC without nicotine

Intervention Type OTHER

Use an EC without nicotine for up to 30 minutes

control

Intervention Type OTHER

sham control

Chronic EC user

Chronic EC users will use, in a randomized, crossover fashion with a 4 week washout, an 1) EC with nicotine, 2) EC without nicotine, and 3) an empty EC (control)

Group Type EXPERIMENTAL

EC with nicotine

Intervention Type OTHER

Use an EC with nicotine for up to 30 minutes

EC without nicotine

Intervention Type OTHER

Use an EC without nicotine for up to 30 minutes

control

Intervention Type OTHER

sham control

Interventions

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EC with nicotine

Use an EC with nicotine for up to 30 minutes

Intervention Type OTHER

EC without nicotine

Use an EC without nicotine for up to 30 minutes

Intervention Type OTHER

control

sham control

Intervention Type OTHER

TC with nicotine (own brand)

smoke a TC

Intervention Type OTHER

research TC with very low level nicotine

smoke a research TC with very low level nicotine

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Healthy non-smokers chronic TC smokers (non-e-cig users) Chronic EC smokers (Non-TC smokers)

Exclusion Criteria

* Cardiac disease, respiratory disease, diabetes
Minimum Eligible Age

21 Years

Maximum Eligible Age

45 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Tobacco Related Disease Research Program

OTHER

Sponsor Role collaborator

University of California, Los Angeles

OTHER

Sponsor Role lead

Responsible Party

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Holly R Middlekauff

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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UCaliforniaLA

Los Angeles, California, United States

Site Status

Countries

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United States

Other Identifiers

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19-000452

Identifier Type: -

Identifier Source: org_study_id

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