Most plant diseases cause a loss of yield or damage the aesthetic qualities of the infected plant. Certain diseases of trees, however, weaken their structure and create a hazardous situation where property damage or serious bodily injury could result from falling limbs or the toppling of the entire tree.
These medicines help bring the heart rate to a normal level. Rate control is the recommended treatment for most patients who have AF, even though an abnormal heart rhythm continues and the heart doesn't work as well as it should. Most people feel better and can function well if their heart rates are well-controlled. Medicines used to control the heart rate include beta blockers (for example, metoprolol and atenolol), calcium channel blockers (diltiazem and verapamil), and digitalis (digoxin). Several other medicines also are available.
The most widely used drugs in this class are metoprolol, atenolol, and propranolol. Beta receptors exist in other systems of the body, such as the lungs. Some drugs target specifically the receptors in the heart, and are known as cardioselective beta blockers. Examples are metoprolol, atenolol, and acebutolol. Other beta blockers include propranolol and nadolol. The specific drug of choice depends on the patientâs health status and condition being treated.