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.
SVT is usually triggered by extra heartbeats (ectopic beats), which everyone has. It may also be triggered by: 1  some medications, including asthma medications, herbal supplements and cold remedies. 2  drinking large amounts of caffeine or alcohol.3  tiredness, stress or emotional upset.4  smoking lots of cigarettes.auses of supraventricular tachycardia. Supraventricular tachycardia (SVT) is caused by a problem with electrical impulses in the heart. Heartbeats are normally initiated by a small group of cells at the top of the heart called the sinoatrial node, which acts as the heart's natural pacemaker.