Author/Authors :
Sadr-Ameli، Mohammad Ali نويسنده Professor of Cardiology, Cardiac Electrophysiology Research Center, Rajaie Cardiovascular, Medical and Research Center , , Aghababaye، Mahdieh نويسنده Resident of Cardiology, Rajaie Cardiovascular, Medical and Research Center , , Haghjoo، Majid نويسنده Echocardiography Research Center, Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran. , , Fazelifar، Amir- Farjam نويسنده Assistant Professor of Cardiology, Cardiac Electrophysiology Research Center, Rajaie Cardiovascular, Medical and Research Center , , Heidarali، Mona نويسنده Cardiac Electrophysiology Research Center, Rajaie Cardiovascular, Medical and Research Center , , Ramezani، Marjan نويسنده Resident of Cardiology, Rajaie Cardiovascular, Medical and Research Center , , Nazari، Zeinab نويسنده Department of Obstetrics and Gynecology, Mazandaran University of Medical Sciences, Sari, Iran Nazari, Zeinab , Pedarpor، Behnaz نويسنده Resident of Cardiology, Rajaie Cardiovascular, Medical and Research Center ,
Abstract :
Background: Heart block is common among patients with inferior infarction. The aim of this study
was to evaluate heart block frequency after revascularization therapy in patients with inferior
infarction.
Methods: One hundred thirty-three patients with inferior wall myocardial infarction (MI) were
enrolled in this study and underwent myocardial revascularization therapy (thrombolytic
therapy, coronary artery bypass graft, and percutaneous angioplasty). Heart block (based on
electrocardiography) was evaluated before revascularization therapy. The relationship
between heart block recovery time and treatment type was defined.
Results: Twenty-six (19.5%) patients were female (mean age=24.6±6.5 years). Fifty-nine (44.4%)
patients did not have heart block. First, second, and third-degree heart block were seen in 59
(44.4%), 4 (3.1%), and 11 (8.3%) patients, respectively. Heart block recovery during 24 hours
after inferior MI was seen in 30.8% in the patients treated by thrombolytic therapy, 50.1% in
the patients treated by precutaneous angioplasty, and 11.1% in the patients treated by medical
therapy (p value=0.01).
Conclusions: Heart block recovery during 24 hours after inferior wall MI was more frequent in the
patients treated by percutaneous coronary intervention. Rapid revascularization may cause fast
recovery from heart block in patients with inferior MI.
