The function of the heart is historically contingent

Area of Science:

• Philosophy of Medicine
• Medical History
• Cardiology

Background:

• Philosophical arguments posit objective biological functions for organs, underpinning disease definitions.
• The heart's function is commonly perceived as self-evident and unchanging.
• Heart failure is defined as cardiac dysfunction, but current medical definitions are complex and not solely based on cardiac output.

Discussion:

• This paper challenges the notion of a fixed, natural heart function, proposing it is historically contingent.
• The historical evolution of heart failure definitions reveals a shift from a simple cardiac output model to a more complex understanding.
• Analysis of early 20th-century medical practices and the 1930s redefinition of heart failure provides insight into this evolution.

Key Insights:

• The definition and understanding of heart failure are not inevitable outcomes of scientific observation but are shaped by historical context.
• Current medical understanding of heart failure, particularly its definition, is counter-intuitive and deviates from a simple reduced cardiac output model.
• Historical contingency significantly influences medical knowledge and disease classification.

Outlook:

• Further research into the historical development of other organ functions and disease definitions is warranted.
• Understanding the historical contingency of medical knowledge can inform future diagnostic criteria and patient care.
• This perspective encourages a critical re-evaluation of established medical concepts and their origins.