Murmur grading in humans and animals: past and present
1Veterinary Information Network, 777 W Covell Blvd, Davis, CA 95616, USA.
Summary
Cardiac murmur grading schemes, used for 50 years in veterinary medicine, are overly complex. A simpler system could improve clinical communication and reduce confusion.
Area of Science:
- Cardiology
- Veterinary Medicine
- Medical History
Background:
- Cardiac murmurs have been described for two centuries.
- Various grading schemes were developed to differentiate murmur types and severity.
- These schemes were adopted in veterinary cardiology over 50 years ago.
Observation:
- The clinical utility of current murmur grading schemes has been recently questioned in veterinary medicine.
- Existing schemes are suggested to be unnecessarily complex and contain redundant information.
- Human studies examining murmur grading utility have not been conducted.
Findings:
- Current veterinary cardiology murmur grading systems may be overly complex.
- Simpler, more intuitive grading schemes could yield similar clinical outcomes.
- Redundant information in current schemes may lead to confusion.
Implications:
- Reconsidering the current murmur grading scheme could enhance clinical communication.
- A revised, simpler scheme may improve diagnostic clarity in veterinary cardiology.
- This review prompts a re-evaluation of established medical assessment tools.
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