Assignment Task: Pedro Pérez Pedroza is a 50-year-old man with no past history of illness. He weighs 150 pounds, is 5'7". For the past 25 years he has worked as an auto mechanic, where he constantly drives and works on batteries, and in the afternoons he is a gas dispenser. Since the age of thirty he has suffered from colicky abdominal pain, accompanied by vomiting and constipation. A year ago he began to present gait disorders (when walking), deafness, dysphonia and fatigue, in addition to losing 16 pounds in recent months. Due to these symptoms, he went to the clinic where they found high blood pressure and was hospitalized for tests
Establish a hierarchy of controls for this case based on occupational health.