April in the north is more apt to be rainy and slightly cooler than in the south. Itâs not as if Sicilians are heading to beaches in droves in April, but vacationers from colder climates might be tempted. In general, itâs usually a good idea to pack both a small umbrella or rain jacket with your sunglasses.
An arrhythmia (ah-RITH-me-ah) is a problem with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. A heartbeat that is too fast is called tachycardia (TAK-ih-KAR-de-ah). A heartbeat that is too slow is called bradycardia (bray-de-KAR-de-ah). Most arrhythmias are harmless, but some can be serious or even life threatening.
Types of Arrhythmia. There are many types of arrhythmias. Arrhythmias are identified by where they occur in the heart (in the atria or ventricles) and by what happens to the heart's rhythm when they occur. Arrhythmias that begin in the atria are called atrial or supraventricular (above the ventricles) arrhythmias. Ventricular arrhythmias begin in the ventricles. In general, ventricular arrhythmias caused by heart disease are the most serious. Premature beats are the most common type of heart arrhythmia.