Find over 200 print-friendly fact sheets about heart disease and related health topics.
Find answers to frequently asked questions about a variety of health conditions, like heart attack, high blood pressure and atrial fibrillation.
Keeping blood glucose levels as close to normal as possible can help prevent or slow the progress of many complications of diabetes. To get tight control, you should pay attention to diet and exercise, keep close track of blood glucose levels, and if you take insulin, closely manage your injection schedule.
The left bundle branch is the conduction system of the main pumping chambers of the heart (right and left ventricles) and is composed of the left posterior and left anterior fascicles or divisions. Left anterior fascicular block (LAFB) forces all the electrical conduction down the left posterior fascicle. Historically, the presence of LAFB was considered a benign finding but recent research in patients greater than 65 years old revealed that LAFB may slightly increase a patient’s risk of atrial fibrillation, heart attack, and death.  Follow-up in this study was over 15 years and only 2 of 1,664 patients in this series required a pacemaker.
The presence of LAFB merits a thorough clinical evaluation for any underlying heart disease. Once this evaluation is completed, an asymptomatic patient should undergo routine clinical evaluations to ensure there has been no development or progression of underlying heart disease.
Jeffrey L. Williams, MD, MS, FACC, FHRS
Do you have a doctor? If you do not, I would recommend you establish a new patient visit with an internal medicine or a family medicine physician for physical examination and evaluation. Sometimes this can take several visits, as he or she may order lab work, EKG and other diagnostic testing depending on your history and physical exam. In the meantime, I would recommend that you avoid strenuous physical activity, scuba diving, caffeine, and energy drinks.
Puja Mehta, MD, FACC
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