There are three main types of volcano-composite or strato, shield and dome. Composite Volcanoes. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava.
A vagal episode or vasovagal response or vasovagal attack (also called neurocardiogenic syncope) is a malaise mediated by the vagus nerve. When it leads to fainting, also known as a syncope, it is called a vasovagal syncope, which is the most common type of fainting.
The blocking of an artery by a thrombus. Thrombus: A blood clot attached to the interior wall of an artery or vein. transfusion reaction: A serious and potentially fatal complication of a blood transfusion in which a severe immune response occurs because the patientâs blood and the donated blood do not match. Valvulitis: An inflammation of a heart valve.