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The underlying causes of sudden cardiac arrest can result from cardiac and non-cardiac etiologies. The most common underlying causes are different, depending on the patient's age. Common cardiac causes include coronary artery disease , non-atherosclerotic coronary artery abnormalities, structural heart damage, and inherited arrhythmias.
Cardiac arrest results from electrical disturbances that cause the heart to suddenly stop beating the way it should. In cardiac arrest, death can result quickly if steps aren’t taken right away.
In theory, atrioventricular blockade or sinus arrest due to profound parasympathetic dominance might result in syncope or sudden cardiac death, but these rhythms tend to be rapidly reversed by lung stretch receptor activation associated with breathing. As such, a vagally produced arrest scenario is likelier during entrapment submersion than in ...
Cardiac arrest. Cardiac arrest is a medical emergency when your heart stops beating suddenly. It’s sometimes mistakenly called a heart attack. A person having cardiac arrest may: Collapse ...
Why does cardiac arrest occur in seemingly healthy young people? “While it is always alarming when it happens, sudden cardiac arrest in young people is not that uncommon,” Panhwar says, noting ...
When the brain was without oxygen for too long due to a myocardial infarction, coma and persistent vegetative state can occur. Cardiac arrest, and atypical symptoms such as palpitations, occur more frequently in females, the elderly, those with diabetes, in people who have just had surgery, and in critically ill patients. [24]
Brain failure after clinical death is now known to be due to a complex series of processes called reperfusion injury that occur after blood circulation has been restored, especially processes that interfere with blood circulation during the recovery period. [11] Control of these processes is the subject of ongoing research.
Cardiac arrest happens when the heart’s electrical system malfunctions and the heart’s pumping stops. It can be caused by an arrhythmia, which is an irregular heart rhythm, or other conditions.
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