What is the fine-grained topic of the following text: Sudden internal organ decease is ordinarily caused by a ruinous heart condition and statements for 2530% of deathsyes vulgar origins of unexpected arrhythmic deathconsiderectopic beatsatrial fibrillationcoronary blood vessel sickness (85%)are therediscrete attacksof tachycardia? Only return the topic.
Causes of Sudden Internal Organ Decease and Heart Conditions