The functional heart murmur: a wastebasket diagnosis

Area of Science:

• Pediatric Cardiology
• Diagnostic Medicine

Background:

• Distinguishing between innocent and functional heart murmurs is crucial for accurate diagnosis.
• Nonorganic murmurs require careful classification to avoid misdiagnosis.

Purpose of the Study:

• To categorize murmurs of nonorganic origin into two main groups: innocent and functional.
• To provide information on the bedside diagnosis of selected nonorganic heart murmurs.

Main Methods:

• Classification of nonorganic murmurs into "innocent" and "functional" categories.
• Detailed discussion of five specific entities within the innocent murmur group.
• Emphasis on bedside diagnostic approaches.

Main Results:

• Innocent murmurs encompass five distinct entities: pulmonary systolic, vibratory systolic, supraclavicular systolic, mammary souffle, and venous hum.
• Functional murmurs are linked to clinically identifiable alterations in circulatory anatomy and/or physiology.
• The study facilitates differentiation between these murmur types.

Conclusions:

• A clear categorization of nonorganic murmurs aids clinical assessment.
• Understanding these categories improves the accuracy of bedside cardiac evaluations.
• This classification framework supports effective diagnosis and management of heart murmurs.