IE 8570 University of Nebraska Module 5 Health Safety and the Environment Questions Nursing Assignment Help

I’m working on a health & medical writing question and need the explanation and answer to help me learn.

1. Assume we have a group of workers in a factory and many of them already have a respiratory

illness. We want to design a study to evaluate if exposure to some specific factor relates to the

illnesses. What study design should we use and how would we conduct the study?

2. Imagine that an industrial hygienist and a safety engineer identify that there is an exposure to

a new chemical that represents a major health hazard in your factory. They immediately

recommend that all of the employees exposed to the chemical use a specific and appropriate type

of PPE. Is this the only thing they should do? What other control measure should we consider

and potentially implement as management of the factory? Why?

3. What is indicated by a LD-50? What is indicated by ED-50? What might it mean if the ED50 equals the LD-50?  

Expert Solution Preview

Introduction:
In this scenario, we are tasked with providing answers to questions related to health and medical topics. The following answers will address each question separately, providing a comprehensive understanding of the concepts being discussed.

Answer 1:
To evaluate if exposure to a specific factor is related to respiratory illnesses among workers in a factory, a case-control study design would be appropriate.

The study could be conducted by selecting two groups of workers – one group with respiratory illnesses (cases) and another group without respiratory illnesses (controls). The exposure to the specific factor of interest would be assessed retrospectively through interviews or company records. The association between exposure and illness could then be analyzed by comparing the prevalence of the specific factor in the cases and controls.

Answer 2:
While recommending the use of specific personal protective equipment (PPE) is an essential measure, it is not the only control measure that should be implemented in this scenario.

Other control measures that should be considered and potentially implemented by the management of the factory include engineering controls and administrative controls. Engineering controls involve modifying the workplace or the process to control the hazard, such as installing ventilation systems to reduce chemical exposure. Administrative controls involve implementing policies and procedures, such as limiting the duration of exposure or providing training on safe handling practices.

Implementing a combination of engineering controls, administrative controls, and the use of appropriate PPE creates a layered approach to ensure the safety and health of the employees.

Answer 3:
LD-50 (lethal dose 50%) is an indicator of the dose of a substance or agent that is lethal to 50% of the test population. It is commonly used to measure the toxicity or lethality of a substance.

On the other hand, ED-50 (effective dose 50%) is an indicator of the dose of a substance or agent that produces a specific effect in 50% of the test population. It is commonly used to measure the effectiveness or potency of a substance.

If the ED50 equals the LD-50, it suggests that the dose required to produce a specific effect is the same as the dose that is lethal to 50% of the test population. This would imply that there is a high risk associated with the substance or agent, as even doses that produce the desired effect have a significant chance of causing severe toxicity or even death.

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