COHN Study Guide 2026
Everything you need to pass the COHN exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 COHN Exam Format at a Glance
📚 COHN Topics to Study (21)
✍️ Sample COHN Questions & Answers
1. Initial De Quervain disease treatment entails:
Applying a thumb spica splint to immobilize the thumb and wrist and beginning a 2-week course of nonsteroidal anti-inflammatory medicines are the first steps in treating De Quervain disease (NSAIDs). If immobilization and anti-inflammatory medication fail, corticosteroid injections are typically the next step in treatment. Surgery would be the next course of action after corticosteroid injections. This condition cannot be treated with physical therapy.
2. Treatment for exposure to lead
The treatment for lead exposure typically involves two main approaches: removing the individual from further exposure to lead and implementing chelation therapy.
3. Which route of entry is the most common pathway for occupational chemical exposures?
Inhalation is the primary route of entry for most workplace chemical exposures because airborne substances are readily drawn into the lungs.
4. Within a comprehensive health and safety program, what is the primary goal of conducting a systematic worksite analysis?
Worksite analysis, which includes processes like the Job Hazard Analysis (JHA), is a core element of a health and safety program designed to proactively find and assess hazards before they cause harm. Its purpose is to look at jobs, tasks, and the overall environment to find potential dangers so that they can be controlled or eliminated. It is a forward-looking, preventive process, not a reactive or punitive one.
5. A workers' compensation case is classified as 'permanent partial disability' (PPD). What does this indicate?
PPD indicates the worker has reached MMI with a residual permanent impairment but can still perform some type of work.
6. As a case manager, the occupational health nurse's primary role in the return-to-work process for an injured employee is to:
The occupational health nurse as a case manager plays a crucial coordinating role. They facilitate communication among all stakeholders to ensure a safe, timely, and appropriate return to work. This includes clarifying medical restrictions, identifying potential modified-duty assignments, and ensuring all parties have the necessary information to make decisions. The other options are either outside the nurse's primary scope or are confrontational and not collaborative.