Regardless of the time of year, the northern and southern hemispheres always experience opposite seasons. This is because during summer or winter, one part of the planet is more directly exposed to the rays of the Sun (see Fig. 1) than the other, and this exposure alternates as the Earth revolves in its orbit.
The signs and symptoms of atrial or ventricular bigeminy may appear similar to that of other kinds of arrhythmias, but in most cases, premature contractions go unnoticed. Possible symptoms of bigeminy include: Lightheadedness; Palpitations (noticeable rapid heartbeat) Fainting or passing out; Shortness of breath; Chest pain
The causes of bigeminy arenât always clear. Heart disease or high blood pressure may create problems with your heartâs electrical system, which controls when and how forcefully your heart beats. Other potential triggers of premature contractions include: alcohol; caffeine; tobacco; asthma medications and other drugs; chemical imbalances in your body