There is no specific identification of vax by AHA as a cause of LKM. Those people said the vax was good for your heart, though.
Link: American Heart Association: 90% of Vaxxed Population Now Have Deadly Heart Defects
Cites Armageddon Prose "Mysterious Brand-New Heart Syndrome Reportedly Affects 90% of U.S. Population" (thepeoplesvoice.tv)
American heart association News release from October 2023 (newsroom.heart.org)
Circulation full text link (ahajournals.org)
(post is archived)