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Physiological reactivity during object manipulation among cigarette-exposed infants at 9 months of age
Pamela Schuetze1, Jared Lessard2, Craig R Colder3
1Department of Psychology, State University of New York Buffalo State, 1300 Elmwood Avenue, Buffalo, NY 14222-1095, United States.
Insights
Prenatal cigarette exposure in infants is linked to increased heart rate during object manipulation tasks. This suggests heightened physiological arousal and less focused attention in exposed babies.
Area of Science:
- Developmental Psychology
- Pediatric Cardiology
- Environmental Health
Background:
- Prenatal exposure to environmental toxins, such as cigarette smoke, can impact infant development.
- Heart rate variability is a key indicator of physiological arousal and attention in infants.
- Understanding the effects of prenatal smoke exposure on infant cardiovascular responses is crucial for early intervention.
Purpose of the Study:
- To investigate the association between prenatal cigarette exposure and infant heart rate.
- To analyze heart rate patterns during a standardized object manipulation task at 9 months of age.
Main Methods:
- Recorded second-by-second heart rate for 181 infants with prenatal cigarette exposure and 77 nonexposed infants.
- Utilized longitudinal multilevel models to assess the impact of prenatal smoking on heart rate.
- Controlled for maternal age, prenatal marijuana/alcohol use, attention duration, and activity level.
Main Results:
- Infants exposed prenatally to cigarettes exhibited significantly increased heart rates during object manipulation.
- This elevated heart rate suggests a physiological response to the task in exposed infants.
Conclusions:
- Prenatal cigarette exposure is associated with altered heart rate responses in 9-month-old infants.
- Findings indicate potential impacts on attention and physiological arousal, highlighting the need for smoking cessation during pregnancy.
Abstract:
The purpose of this study was to examine the association between prenatal exposure to cigarettes and heart rate during an object manipulation task at 9 months of age. Second-by-second heart rate was recorded for 181 infants who were prenatally exposed to cigarettes and 77 nonexposed infants during the manipulation of four standardized toys. A series of longitudinal multilevel models were run to examine the association of prenatal smoking on the intercept and slope of heart rate during four 90-second object manipulation tasks. After controlling for maternal age, prenatal marijuana and alcohol use, duration of focused attention and activity level, results indicated that the heart rates of exposed infants significantly increased during the object manipulation task. These findings suggest casual rather than focused attention and a possible increase in physiological arousal during object manipulation.
