Circuits are grounded for the. purpose of limiting the voltage upon the circuit which might. otherwise occur through exposure to lightning or other voltages. higher than that for which the circuit is designed; or to limit. the maximum potential to ground due to normal voltage. (b) Exposed Enclosures.
More important, there are differences in the underlying cause of these two types of heart attack and, therefore, in the initial treatment. A STEMI heart attack is caused when a blood clot suddenly forms, completely blocking an artery in the heart. This can result in damage that covers a large area of the heart and extends deep into the heart muscle.
Causes. Iatrogenic infection is complex because it has so many causes, including chance, negligence, medical error, and interactions of prescription drugs. Nosocomial infections, another leading cause of iatrogenic illness, are those that occur during hospitalization or through treatment in another health care setting. Vectors for infection in these facilities include vomit, blood, urine, and feces. Some microorganisms can be spread through the air.