Ventricular fibrillation is one type of arrhythmia that can be deadly. It occurs when the heart beats with rapid, erratic electrical impulses. This causes pumping chambers in your heart (the ventricles) to quiver uselessly instead of pumping blood. Without an effective heartbeat, blood pressure plummets, cutting off blood supply to your vital organs.
In the ABO system, (and Rhesus D system) all blood belongs to one of four major groups: A+/â, B+/â, AB+/â, or O+/â. The presence (+) or absence (â) of the RhD (Rhesus D) antigen is indicated by the plus or minus following the ABO type. But there are more than two hundred minor blood groups that can complicate blood transfusions. These are known as rare blood types.
There are 4 different blood types (A, B, O, &amp; AB). Each blood type can either be Rh positive or Rh negative. (e.g., A+, A-, B+, B-, O+, O-, AB+, AB-). <br /><br /> Blood type AB is the universal receiver when it comes to donating blood. That means anyone can donate blood to a person with AB blood.