Ontario Paramedic Practice Exam

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What is commotio cordis, and what type of arrest is it treated as?

Arrest caused by asphyxiation, treated as traumatic
Arrest due to drug overdose, treated as accidental
Arrest caused by a sudden blunt impact to the chest, treat as traumatic not medical
Arrest due to heart disease, treated as medical

The correct answer is: Arrest caused by a sudden blunt impact to the chest, treat as traumatic not medical

Commotio cordis is a condition that occurs when a sudden, blunt impact to the chest results in a disruption of the heart's electrical rhythm, which can lead to cardiac arrest. This phenomenon is especially relevant in sports or activities where there is a risk of blunt force trauma to the chest, such as baseball, hockey, or martial arts. When treating a case of commotio cordis, it is crucial to recognize that the arrest is not caused by underlying medical conditions, such as heart disease, nor is it the result of asphyxiation or drug overdose. Instead, it is directly linked to the physical trauma of the impact. Therefore, it is classified as a traumatic arrest rather than a medical one. This distinction is important in guiding the appropriate immediate treatment protocols and responses, such as the need for rapid defibrillation if the patient is in a shockable rhythm. By understanding commotio cordis and its implications, responders can provide targeted and effective care, addressing the unique circumstances surrounding this type of cardiac arrest.