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Evaluation of a novel method for grading heart murmur intensity
Ron Keren1, Michele Tereschuk, Xianqun Luan
1Division of General Pediatrics, Pediatric Generalist Research Group, Children's Hospital of Philadelphia, 3535 Market Street, Philadelphia, PA 19104, USA. keren@mail.chop.edu
Archives of Pediatrics & Adolescent Medicine
|April 6, 2005
Summary
A new method using heart sounds as an internal reference improved heart murmur intensity grading accuracy and consistency for medical professionals. This technique showed particular benefits for attending physicians and students grading specific murmur grades.
Area of Science:
- Cardiology
- Medical Education
Background:
- Accurate grading of heart murmur intensity is crucial for diagnosis and management.
- Current grading methods may lack consistency and accuracy among healthcare providers.
Purpose of the Study:
- To evaluate if using heart sounds as an internal reference can enhance the performance of heart murmur intensity grading.
Main Methods:
- A single-blind controlled trial involved 100 participants (students, residents, attending physicians).
- Participants were assigned to an intervention group (taught a new grading system) or a control group.
- Performance was assessed by accuracy, interrater agreement, and consistency in grading recorded murmurs.
Main Results:
- The intervention group showed greater improvement in grading accuracy compared to the control group.
- Significant improvements were observed in attending physicians and students, and for grade 2 murmurs.
- Enhanced consistency was noted for attending physicians and for grades 2 and 3 murmurs.
Conclusions:
- A system utilizing heart sounds as an internal reference effectively and rapidly improves heart murmur intensity grading.
- The benefits are most pronounced for certain provider levels and specific murmur grades, suggesting targeted training applications.