With proper maintenance, itâs possible to extend the life of an engine by a considerable amount, up to 500 hours for regular maintenance, and even up to 1,000 hours for those boaters with the utmost dedication. Maintenance and care will prolong the life of the engine, and overall, save a lot of money.
In medicine, exacerbation may refer to an increase in the severity of a disease or its signs and symptoms. For example, an exacerbation of asthma might occur as a serious effect of air pollution, leading to shortness of breath. Last Editorial Review: 5/13/2016.
In this article. From time to time, people with chronic obstructive pulmonary disease (COPD) have whatâs known as an exacerbation. Think of it as a flare. You may suddenly have trouble breathing, or make more noise when you do. You may cough a lot and feel bad all over.