Pathological wave dynamics: a postulate for sudden cardiac death in athletes

Area of Science:

• Cardiovascular Physiology
• Sports Medicine
• Pathophysiology

Background:

• Sudden death (SD) in young athletes is a significant concern.
• Sudden cardiac death (SCD) is the primary medical cause of SD in athletes.
• Existing research links SCD to cardiovascular abnormalities, but some cases lack identifiable structural disorders.

Purpose of the Study:

• To propose a novel hypothesis for SCD in athletes, particularly those without apparent cardiovascular abnormalities.
• To investigate the role of abnormal aortic and coronary wave dynamics in exercise-induced cardiac events.
• To explore how pathological waves may explain SCD and Commotio Cordis.

Main Methods:

• This article presents a theoretical hypothesis based on existing literature and physiological principles.
• It analyzes the interplay between wave dynamics, myocardial oxygen demand, and supply during exercise.
• The hypothesis is evaluated for its explanatory power regarding SCD and Commotio Cordis.

Main Results:

• Abnormal aortic and coronary wave dynamics are hypothesized to cause myocardial ischemia during exercise.
• Pathological aortic waves may increase myocardial oxygen demand.
• Pathological coronary waves may reduce myocardial oxygen delivery, leading to acute ischemia and potential SCD.

Conclusions:

• Abnormal aortic and coronary wave dynamics represent a potential mechanism for SCD in young athletes, even without overt cardiovascular disease.
• This pathological wave hypothesis provides a unifying explanation for SCD and Commotio Cordis.
• Further research into wave dynamics is warranted to understand and prevent exercise-related sudden cardiac death.