21. An " inferior wall myocardial infarction " may cause damage to the AV node, causing third-degree heart block . 22. Freezing tissue near the AV node is less likely to provoke irreversible heart block than ablating it with heat. 23. Third-degree heart block may also be congenital and has been linked to the presence of lupus in the mother. 24. In Munich, Mobitz was promoted to the position of a senior lecturer thanks to his research on heart block . 25. Chevalier says he knows firsthand : He suffers from " heart block , " a condition treated with a pacemaker. 26. If that occurs, the result may be heart block -a potentially lethal condition of which syncope may be a symptom. 27. On December 30, 1990, the pacemaker failed, allegedly resulting in a " complete heart block " that required emergency surgery. 28. The syndrome includes an absent radial bone in the arms, an atrial septal defect, and a first degree heart block . 29. Studies have shown that third-degree heart block in the setting of an inferior wall myocardial infarction typically resolves within 2 weeks. 30. Increased autoantibody titer against human calreticulin is found in infants with complete congenital heart block of both the IgG and IgM classes.
