Potential Cardiovascular Autonomic Dysfunction in Burn Survivors: A Pilot Study.

Area of Science:

• Cardiology
• Autonomic Neuroscience
• Burn Medicine

Background:

• Burn injury is a significant risk factor for long-term cardiovascular disease.
• The underlying mechanisms, particularly autonomic dysfunction, remain under-explored in chronic burn survivors.

Purpose of the Study:

• To investigate cardiovascular autonomic function in adults with chronic burn injuries.
• To determine if autonomic impairment correlates with burn severity or duration.

Main Methods:

• Ten adult burn survivors (3-11 years post-injury, 10-70% TBSA) underwent autonomic function testing.
• Standard tests included Valsalva's maneuver, paced breathing, and isometric handgrip.
• Heart rate and blood pressure responses were compared to normative data and matched controls.

Main Results:

• Burn survivors exhibited significantly lower Valsalva ratios and reduced heart rate variability (RMSSD) compared to controls.
• Impaired cardiac vagal modulation was indicated by these findings.
• RMSSD showed a trend towards correlation with burn size (p=.082).

Conclusions:

• Chronic burn injury is associated with diminished cardiac vagal control.
• This autonomic dysfunction may contribute to the elevated cardiovascular risk observed in burn survivors.
• Further research is warranted to explore therapeutic interventions targeting autonomic function.