Heart rate variability in mice: a theoretical and practical guide.

Area of Science:

• Cardiovascular research
• Mammalian physiology
• Autonomic nervous system function

Background:

• Mice are key animal models for studying mammalian biological processes and human diseases.
• Autonomic nervous function evaluation, particularly heart rate variability (HRV) analysis, is vital in understanding cardiomyopathy.
• Assessing sympathovagal balance via HRV in freely moving mice presents standardization challenges.

Purpose of the Study:

• To survey existing heart rate variability analysis techniques in mice.
• To establish a standardized protocol for assessing autonomic neural regulation of heart rate in mice.
• To improve the comparability and interpretation of cardiovascular research findings.

Main Methods:

• Review of existing methodologies for heart rate variability analysis in mice.
• Identification of critical parameters for a standardized protocol.
• Focus on assessing sympathovagal balance on the sino-atrial level.

Main Results:

• The study highlights the difficulties in standardizing HRV analysis protocols in mice due to methodological variations.
• Identified key areas for standardization to ensure reliable assessment of autonomic neural regulation.
• Provides a foundation for a universally accepted protocol.

Conclusions:

• A standardized protocol for heart rate variability analysis in mice is essential for advancing cardiovascular research.
• Consistent methodology will enhance the understanding of autonomic neural regulation in disease models.
• This work aims to facilitate clearer interpretation and comparison of research outcomes.