Acute effects on the ventricular function in Swedish snuffers: an echocardiographic study

Area of Science:

• Cardiovascular Physiology
• Pharmacology

Background:

• Nicotine in cigarettes and Swedish snuff affects the cardiovascular system.
• Cigarette smoke acutely impairs diastolic heart parameters.
• Diastolic and systolic heart function in snuff users requires further investigation.

Purpose of the Study:

• To investigate acute effects of Swedish snuff on systolic and diastolic heart parameters.
• To assess changes in left and right ventricular function in healthy snuff users.

Main Methods:

• Echocardiography used on 30 healthy volunteers.
• Measurements taken before, during (5, 30 min), and after snuff withdrawal (30 min).
• Assessed systolic/diastolic parameters, heart rate, and blood pressure.

Main Results:

• Significant alterations in pulse and blood pressure observed.
• No significant changes in left ventricular ejection fraction or annular motion.
• Significant decrease in diastolic heart parameters for both ventricles (P < 0.05).

Conclusions:

• Snuff intake significantly reduces E/A ratio, indicating delayed ventricular relaxation.
• Diastolic heart function in both ventricles is decreased post-snuff intake.
• Nicotine effects and altered loading conditions likely mediate these cardiovascular changes.