Introduction to Climate change. Many people make Climate Change and Global Warming a scary and difficult thing to understand, but itâs not.Scientists have warned that the world's climate has changed a lot, and has affected many living and non-living things.ntroduction to Climate change. Many people make Climate Change and Global Warming a scary and difficult thing to understand, but itâs not.
Atrial or Supraventricular Tachycardia (SVT) Atrial or Supraventricular tachycardia (SVT) is a fast heart rate that starts in the upper chambers of the heart. Some forms are called paroxysmal atrial tachycardia (PAT) or paroxysmal supraventricular tachycardia (PSVT). How it happens.
Ventricular tachycardia (V-tach) is a rapid heart beat that originates in one of the lower chambers (the ventricles) of the heart. To be classified as tachycardia, the heart rate is usually at least 100 beats per minute. A rapid heart rate can originate in either the left or right ventricle.