Correlation between exposure to secondhand smoke load and hemodynamic parameters, lung function and autonomic nervous system

Introduction: It is known that the damage caused by smoking can be extended to passive smokers; however, there are still gaps from passive exposure to cigarette smoke. Objective: To verify the correlation betweenfrequency and duration of exposure of passive smoking and hemodynamic parameters, lung function and autonomic nervous system. Methods: 38 passive smokers, exposed daily to cigarette smoke, were evaluated. An initial assessment and evaluation of lung function were performed. Next, to analyze the autonomic nervous system, heart rate variability data were collected using a heart rate monitor at rest for 20 minutes. Hemodynamic parameters were measured. We questioned the frequency of exposure (exposure times daily) and the exposure time (in years). Results: There was a significant correlation (p 2 (r=-0.4767).A reduction in vagal activity (RMSSD (r=-0.4449), HFms 2 (r=-0.4932) HFnu (r=-0.5078) and SD1 (r=-0.4449)), increased sympathetic activity LFnu (r=0.4231) as well as a reduction in autonomic balance LF/HF (r=0.4979) was also observed, according to the frequency of exposure. Conclusion: Passive smokers presented a correlation between passive exposure load and damage to the hemodynamic parameters, lung function and autonomic nervous system.