Electromagnetic fields produced by incubators influence heart rate variability in newborns

Area of Science:

• Neonatal physiology
• Bioelectromagnetics
• Autonomic nervous system research

Background:

• Incubators protect vulnerable newborns but emit electromagnetic fields (EMFs) from their motors.
• Chronic EMF exposure in neonates is a concern, with limited research on its effects on developing systems.

Purpose of the Study:

• To investigate the impact of incubator motor EMFs on the autonomic nervous system activity of newborns.
• To assess changes in heart rate variability (HRV) in response to incubator motor EMFs.

Main Methods:

• Heart rate variability (HRV) was monitored in 43 newborns.
• A study group of 27 newborns had HRV measured during three 5-minute periods: incubator motor on, off, and on again.
• A control group of 16 newborns experienced background noise changes without significant EMF exposure.

Main Results:

• Turning off the incubator motor significantly increased total power and high-frequency (HF) components of HRV.
• The low-frequency (LF)/HF ratio of HRV decreased significantly when the incubator motor was off.
• These HRV changes returned to baseline when the incubator motor was reactivated; background noise changes had no significant effect.

Conclusions:

• EMFs generated by incubator motors demonstrably influence newborns' HRV and autonomic nervous system function.
• The findings highlight the need for further investigation into potential long-term health consequences for preterm infants exposed to incubator EMFs for extended periods.