###Human: Is it advisable to use E-cigarette to avoid future heart attacks? ###Assistant: Hi. I am sorry to hear about your father but I am glad he survived and was appropriately treated. If he wants to increase his survival and decrease the possibility of dying, having another heart attack or developing heart failure (weak heart), he must stop smoking. There is no risk of stopping smoking related to this heart disease. The real risk is not to stop smoking. In regards to E-Cigarettes, they have been found to have a risk to the heart and lungs that do not make them a safer alternative to regular smoking. However, there are plenty of therapies and measurements to help him quit and although it is not easy, they might be very effective if used appropriately. And if he fails and recurs, it is totally fine and he can try again, over and over until he quits.