Occupational Health Practice Questions

Q: Farmers' lung is caused by?

Saccharopolyspora rectivirgula. ***Saccharopolyspora rectivirgula*** - **Farmers' lung** is a type of **hypersensitivity pneumonitis** caused by inhaling dust containing spores of thermophilic actinomycetes. - The most common causative agent is **_Saccharopolyspora rectivirgula_** (formerly _Micropolyspora faeni_) found in moldy hay. *Aspergillus* - **_Aspergillus_** is a genus of fungi, with _Aspergillus fumigatus_ being the most common species. - It can cause **allergic bronchopulmonary aspergillosis (ABPA)**, aspergilloma, or invasive aspergillosis, but it is not the typical cause of farmers' lung. *Histoplasma capsulatum* - **_Histoplasma capsulatum_** is a fungus that causes **histoplasmosis**, an infection primarily affecting the lungs. - It is typically found in soil contaminated with **bird or bat droppings** and is not associated with farmers' lung. *None of the options* - This option is incorrect because **_Saccharopolyspora rectivirgula_** is the correct causative agent for farmers' lung.

Q: Workers handling electronic waste are at highest risk of occupational exposure to heavy metals in which of the following settings?

Recycling. **Recycling** - Workers in **e-waste recycling facilities** are directly exposed to the hazardous components of electronic waste, including heavy metals like **lead, mercury, cadmium, and beryllium**, during manual dismantling, shredding, and material separation processes. - This direct and often unprotected contact during handling and processing significantly increases their risk of **occupational exposure** to these toxic substances, leading to various health conditions. *Burning* - While burning e-waste releases toxic fumes and heavy metals, the question specifically asks about health conditions due to occupational exposure, implying direct handling by workers. - The primary health risk from burning is to those in the immediate vicinity or exposed to resultant atmospheric pollution, rather than direct occupational handling within a controlled facility. *Incineration* - **Incineration** (controlled burning in specialized facilities) is designed to minimize direct human exposure to waste during processing, although emissions still pose environmental risks. - Workers in incineration plants face exposure risks largely related to emissions control and ash handling, which differ from the direct handling of raw e-waste. *In a landfill* - Workers in **landfills** primarily face risks from general waste decomposition, methane gas, and leachate, which can contain heavy metals that seep into soil and groundwater. - While heavy metals from e-waste can leach from landfills, direct occupational exposure to high concentrations of various heavy metals from raw, unprocessed e-waste is less prominent compared to recycling facilities.

Q: Which fungicide is used as a spray for the control of bagassosis?

2% formic acid. ***2% formic acid*** - **2% formic acid spray** is the **standard fungicide** used for the control and prevention of **bagassosis**. - It is applied to stored bagasse to **prevent fungal and thermophilic actinomycete growth**, which are the causative agents of bagassosis (hypersensitivity pneumonitis). - This is a well-established **occupational health measure** in sugar cane industries and is documented in standard preventive medicine textbooks. - **Effective concentration** for bagasse treatment is typically 2% aqueous solution. *2% propionic acid* - **Propionic acid** is primarily used as a preservative for **grains, animal feed, and silage** rather than for bagasse treatment. - While it has antifungal properties, it is **not the standard fungicide** specifically recommended for bagassosis prevention in occupational health guidelines. *2% acetic acid* - **Acetic acid** has mild antifungal properties but is **less effective** than formic acid for controlling the specific organisms that cause bagassosis. - It is **not the standard treatment** for bagasse and is not recommended in occupational health protocols for bagassosis prevention. *25% phenyl mercury* - **Phenylmercury compounds** are **highly toxic** heavy metal fungicides that have been **banned or severely restricted** due to environmental contamination and serious health hazards. - This concentration would be **extremely dangerous** and is absolutely **not used** in modern occupational health practice.

Q: A disease associated with prolonged exposure to silica dust during glass production, characterized by classic X-ray findings of calcified lymph nodes and pleural involvement, is most likely what disease?

Silicosis. ***Silicosis*** [1][2] - Prolonged exposure to **silica dust** during glass production leads to characteristic **X-ray findings** of calcified lymph nodes and an "eggshell" pattern. - Associated with **pleural involvement** resulting in fibrous plaques and a greater risk of developing **tuberculosis** [3]. *Anthracosis* [2] - Caused by exposure to **coal dust**, not silica, and primarily affects the **upper lobes** of the lungs. - X-ray findings do not show the classic "eggshell" pattern; they are primarily concerned with **black lung disease** changes. *Berylliosis* [2] - Results from exposure to **beryllium dust**, typically presenting with **granulomatous lung disease** rather than an eggshell pattern. - Less common and does not show significant pleural changes as seen in silicosis. *Byssinosis* - Associated with the inhalation of **cotton dust**, leading to respiratory issues, but lacks the calcified nodules characteristic of silicosis. - Symptoms often improve over a weekend, differentiating it from silicosis. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Lung, p. 697. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Lung, p. 695. [3] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Lung, pp. 697-698.

Q: Which among the following occupations is a risk factor for cutaneous larva migrans?

Farmer. ***Farmer*** - Farmers are at high risk due to frequent direct contact with **contaminated soil** or sandy environments where animal feces, especially from dogs and cats, might be present. - Exposure to **larvae of hookworms** such as *Ancylostoma braziliense* and *Ancylostoma caninum*, which can penetrate unprotected skin (e.g., bare feet while working) from the soil. *A lifeguard in a swimming pool* - Lifeguards primarily work in **chlorinated water** or on clean, well-maintained pool decks, which do not typically harbor hookworm larvae. - While they might be exposed to other skin conditions, **cutaneous larva migrans** is not a common risk associated with this occupation. *A poultry worker* - Poultry workers are primarily exposed to avian environments, where hookworm species that cause cutaneous larva migrans in humans are typically **not found**. - Their work environment generally does not involve direct contact with soil contaminated by **canine or feline feces**. *A kennel worker* - While kennel workers handle dogs and cats, which are carriers of hookworms, their primary exposure is to the animals themselves or their immediate cleaned environments, not typically **soil contaminated with larvae**. - The mode of transmission for cutaneous larva migrans is through **soil contact** rather than direct animal handling in a controlled kennel setting.

Q: In the context of the Employees' State Insurance (ESI) programme in India, what percentage does the employer currently contribute to the fund?

3.25%. ***3.25%*** - As of July 1, 2019, the **employer's contribution rate** to the Employees' State Insurance (ESI) scheme in India was revised to **3.25%** of the wages payable to employees. - This contribution is a statutory deduction from the employer for providing comprehensive social security benefits to employees, including medical, sickness, maternity, and disablement benefits. - The employee contribution is **0.75%** of wages. *4.75%* - This was the **previous employer's contribution rate** before the revision that came into effect on July 1, 2019. - While it was historically correct, it is **no longer the current rate**, making this option incorrect. *5.75%* - This percentage has **never been the official employer's contribution rate** for the ESI scheme in India. - It does not align with either the historical or current contribution rates. *3.75%* - This percentage is **not a recognized rate** in the ESI contribution structure. - It may cause confusion but does not correspond to either employer or employee contribution rates under the current or previous schemes.

Q: Occupational cancer involves the following organs, except:

Breast. ***Breast*** - While breast cancer is a significant health concern, it is not consistently recognized as a primary site for **occupational cancer** directly linked to specific workplace exposures. - The major risk factors for breast cancer are typically **hormonal**, **genetic**, and related to **lifestyle**, rather than occupational carcinogens. *Lung* - The **lung** is a well-established site for occupational cancer, commonly associated with exposure to carcinogens like **asbestos**, **radon**, **silica**, and **polycyclic aromatic hydrocarbons (PAHs)**. - Industries such as mining, construction, and manufacturing have a higher risk of lung cancer due to inhaled occupational hazards. *Bladder* - The **bladder** is a recognized site for occupational cancer, particularly for workers exposed to **aromatic amines** and **benzidine-based dyes**. - Occupations in the chemical, rubber, and dye industries have historically shown increased rates of bladder cancer. *Liver* - The **liver** can be affected by occupational carcinogens such as **vinyl chloride** (leading to angiosarcoma of the liver) and **arsenic**. - Workers in plastics manufacturing and those exposed to certain industrial chemicals are at higher risk for liver cancers.

Q: A healthcare worker receives a needlestick injury. Which immediate measure should be taken as part of post-exposure prophylaxis?

Wash the area with soap and water. ***Wash the area with soap and water*** - **Immediate washing with soap and water** is the primary first aid measure for needlestick injuries, as it helps to mechanically remove blood and potential pathogens from the wound site - This action reduces the inoculum of any infectious agents and is a crucial step before further medical evaluation and PEP assessment *Apply a tourniquet* - Applying a tourniquet is **contraindicated** as it can increase localized pressure and potentially force contaminants deeper into the tissue - Tourniquets are used to control severe arterial bleeding, not for superficial needlestick injuries *Apply ice to the area* - Applying ice is **not recommended** as an immediate measure for needlestick injuries - Ice reduces swelling but does not address pathogen transmission risk and may cause vasoconstriction, potentially trapping contaminants *Take antibiotics immediately* - Taking antibiotics immediately is **not the initial step** in post-exposure prophylaxis for needlestick injuries - While PEP with antiretrovirals may be indicated depending on exposure and source patient status, this requires medical evaluation and is typically started within 2 hours, not self-administered antibiotics

Question 1

Farmers' lung is caused by?

Accepted Answer

Saccharopolyspora rectivirgula

Answer

None of the options

Answer

Aspergillus

Answer

Histoplasma capsulatam

Question 2

Workers handling electronic waste are at highest risk of occupational exposure to heavy metals in which of the following settings?

Accepted Answer

Recycling

Answer

Burning

Answer

Incineration

Answer

In a landfill

Question 3

Which fungicide is used as a spray for the control of bagassosis?

Accepted Answer

2% formic acid

Answer

2% propionic acid

Answer

2% acetic acid

Answer

25% phenyl mercury

Question 4

A disease associated with prolonged exposure to silica dust during glass production, characterized by classic X-ray findings of calcified lymph nodes and pleural involvement, is most likely what disease?

Accepted Answer

Silicosis

Answer

Byssinosis

Answer

Berylliosis

Answer

Anthracosis

Question 5

Which among the following occupations is a risk factor for cutaneous larva migrans?

Accepted Answer

Farmer

Answer

A poultry worker

Answer

A kennel worker

Answer

A lifeguard in a swimming pool

Question 6

Which of the following statements about N95 masks is true?

Accepted Answer

They were designed for occupational safety against various airborne particles.

Answer

It filters 95% of particles 0.3 microns and larger.

Answer

They are only effective against particles larger than 1 micron.

Answer

N stands for 'Not oil-resistant'.

Question 7

In the context of the Employees' State Insurance (ESI) programme in India, what percentage does the employer currently contribute to the fund?

Accepted Answer

3.25%

Answer

5.75%

Answer

3.75%

Answer

4.75%

Question 8

Occupational cancer involves the following organs, except:

Accepted Answer

Breast

Answer

Bladder

Answer

Liver

Answer

Lung

Question 9

A healthcare worker receives a needlestick injury. Which immediate measure should be taken as part of post-exposure prophylaxis?

Accepted Answer

Wash the area with soap and water

Answer

Apply a tourniquet

Answer

Apply ice to the area

Answer

Take antibiotics immediately

Occupational Health — MCQs

Occupational Health — MCQs

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