FREE COHN ABOHN Questions and Answers

Question 1

Perchloroethylene is frequently subjected to dry cleaners (PERC). It is known that specific chemical agents cause:

Accepted Answer

Renal toxicity

Answer

Perchloroethylene (PERC) is known to cause cancer in both humans and animals. Chemicals used in dry cleaning, particularly PCE, are linked to kidney damage. Due to this, those who work in the dry cleaning sector are more likely to acquire kidney cancer and end-stage renal disease. Exposure to polychlorinated biphenyls, chlorinated or halogenated solvents, and other substances at work might result in liver damage (PCBs). Ototoxicity is the term used to describe harm to the inner ear brought on by certain chemotherapeutic drugs, diuretics, or antibiotics. High noise levels and exposure to heavy metals are additional causes. Heavy metals, solvents, and pesticides are just a few of the natural and synthetic neurotoxins that can harm the brain or central nervous system.

Question 2

What type of fire extinguisher is most suited to extinguish kerosene fire?

Accepted Answer

Class B

Answer

Flammable substances, including kerosene, oil, and gasoline, are involved in class B fires. Paper, cardboard, and wood are simple materials that can be put out with Class A extinguishers. Electrical fires, such as those in outlets, appliances, and wiring, are handled using Class C extinguishers. Chemical fires require the use of Class D extinguishers.

Question 3

A packing plant employee reports experiencing soreness at the base of their right thumb. Over the tendons towards the distal radius, he has swelling and pain. He has probably developed the following:

Accepted Answer

De Quervain disease

Answer

A variant of tenosynovitis called De Quervain disease causes the tendon sheaths on the radial (thumb) side of the wrist to enlarge. Tenosynovitis is an infection of the tendon sheath lining. As seen in a packing plant, the tendon sheath's capacity to produce adequate lubricant might be damaged by repetitive action or constant, intense gripping. Repetitive friction then disrupts the tendons' effortless slide in the sheath, resulting in pain at the base of the thumb. Sewing, packing, and butchering workers are also at risk for developing this illness, as are middle-aged women. An abnormality of the finger flexor tendon called the trigger finger allows a bent finger to become trapped and then burst out or pop when extended. Farmers, industrial workers, and musicians are susceptible to this illness since repetitive hand movements bring it on. A genetic condition called Dupuytren disease causes the palmar fascia to thicken gradually, squeezing the fingers into the palm—a tendon tear results in epicondylitis, which causes pain on the outside of the elbow. Tennis elbow is the name given to this ailment because it frequently affects tennis players; golfer's elbow is the name given to another type of epicondylitis.

Question 4

An employee complaining of weakness, lightheadedness, and exhaustion collapses while working in a heated setting. Average body temperature and a temporary loss of consciousness are both present. He is most likely afflicted with the following:

Accepted Answer

Heat exhaustion

Answer

Exercise in a hot environment can lead to heat prostration (heat exhaustion). Lightheadedness, exhaustion, weakness, near-syncope, and syncope are typical symptoms. Heat cramps are brief muscle spasms brought on by dehydration and the loss of body salts while performing strenuous activity in a hot environment. In contrast, heat stroke is a potentially fatal condition brought on by a highly high core body temperature that can result in tissue damage and organ failure. Poor conditioning does not contribute to hyperthermia, although it can cause muscle weakness and a lack of endurance.

Question 5

Initial De Quervain disease treatment entails:

Accepted Answer

Thumb spica splint and a 2-week course of NSAIDs

Answer

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.

COHN Exam Practice Test

COHN Exam Practice Test

FREE COHN ABOHN Questions and Answers