Housing and Health — MCQs
A 3 yrs old child is brought to the emergency room by his parents after they found him having a generalized seizure at home. The child's breath smells of garlic, and he has bloody diarrhea, vomiting, and muscle twitching. Which poison is it likely that this child has encountered?
Which of the following is NOT a common pathogen causing pneumonia in COPD patients?
The best approach to prevent cholera epidemic in a community is:
A 6-year-old boy is admitted to the ward with drowsiness, dull deep tendon reflexes and seizures. On examination the child has a line on gums and there is a history of constipation. Which will be most appropriate drug that should be used for this child?
Synovial fluid contains-
Which substance is secreted by the cells of the stratum intermedium?
The following table shows the 'Total Fertility Rate (TFR)' by the Wealth Index, as per the National Family Health Survey, (NFHS–4) findings. Which among the following is/are correct about the information?
A 60 year old woman is seen at an emergency room after she fractures the neck of her right femur during a minor fall. Radiologic studies demonstrate a generalized loss of bone mass. Exogenous therapy with which of the following hormones would have been most likely to slow or prevent the patient's bone disease?
Cone of light focuses on which quadrant of tympanic membrane?
A woman delivers a healthy baby with weight 2.2 kg at the time of birth. What measures are to be taken? 1. The baby should be exclusively breast fed for first six months 2. The vaccination with OPV and BCG should be delayed till the baby is 2.5 kg of weight 3. Baby should be kept with mother and kangaroo care to be given Select the correct answer using the code given below:
Housing and Health Indian Medical PG Practice Questions and MCQs
Question 1: A 3 yrs old child is brought to the emergency room by his parents after they found him having a generalized seizure at home. The child's breath smells of garlic, and he has bloody diarrhea, vomiting, and muscle twitching. Which poison is it likely that this child has encountered?
- A. Thallium
- B. Carbon monoxide
- C. Arsenic (Correct Answer)
- D. Lead
Explanation: **Arsenic** - **Arsenic poisoning** in children can present with a combination of **gastrointestinal distress** (bloody diarrhea, vomiting) [1], **neurological symptoms** (seizures, muscle twitching) [1], [3], and a characteristic **garlic-like odor** on the breath [1]. - The rapid onset of severe symptoms, including seizures, is consistent with acute arsenic toxicity [3]. *Thallium* - **Thallium poisoning** typically presents with **hair loss**, painful **neuropathy**, and gastrointestinal upset. - A garlic odor on the breath and acute seizures as prominent initial symptoms are not characteristic of thallium exposure. *Carbon monoxide* - **Carbon monoxide poisoning** would present with symptoms like **headache**, **dizziness**, nausea, and **cherry-red skin** in severe cases, but not a garlic odor or bloody diarrhea. - **Seizures** can occur, but the overall clinical picture, especially the garlic breath and bloody diarrhea, is inconsistent. *Lead* - **Lead poisoning** in children is often chronic, presenting with neurodevelopmental issues, **abdominal pain** (lead colic), **anemia**, and a **"lead line" on the gums** [2]. - While seizures can be a late manifestation of severe lead encephalopathy [2], the acute presentation with garlic breath, bloody diarrhea, and rapid-onset seizures is not typical for lead exposure.
Question 2: Which of the following is NOT a common pathogen causing pneumonia in COPD patients?
- A. Klebsiella pneumoniae
- B. Legionella spp (Correct Answer)
- C. Pseudomonas aeruginosa
- D. Haemophilus influenzae
Explanation: ***Legionella spp*** - While *Legionella* can cause pneumonia, it is **not a common pathogen** specifically in COPD exacerbations or community-acquired pneumonia in these patients [1]. - *Legionella* pneumonia often presents with **extrapulmonary symptoms** like diarrhea and hyponatremia and is typically associated with contaminated water sources [1]. *Haemophilus influenzae* - This is a very common pathogen causing both **acute exacerbations of COPD (AECOPD)** and pneumonia in patients with underlying COPD [1]. - COPD patients often have **impaired mucociliary clearance** and altered airway microbiology, making them susceptible to *H. influenzae* colonization and infection [1]. *Pseudomonas aeruginosa* - *Pseudomonas aeruginosa* is an important pathogen in **severe COPD exacerbations**, especially in patients with frequent exacerbations, bronchiectasis, or prior antibiotic use. - Its presence often indicates a **more severe disease course** and requires specific antibiotic coverage. *Klebsiella pneumoniae* - *Klebsiella pneumoniae* is a significant cause of **pneumonia in immunocompromised individuals**, including those with COPD, diabetes, or alcoholism. - It often leads to **severe, necrotizing pneumonia**, particularly in the upper lobes, and can cause abscess formation.
Question 3: The best approach to prevent cholera epidemic in a community is:
- A. Health education
- B. Mass chemoprophylaxis with tetracycline
- C. Vaccination of all individuals
- D. Safe water and sanitation (Correct Answer)
Explanation: ***Safe water and sanitation*** - Cholera is primarily transmitted through **fecally contaminated water** and food sources. Ensuring access to **safe drinking water** and proper **sanitation facilities** (e.g., latrines, waste management) is the most effective and sustainable way to break the chain of transmission. - These measures prevent the spread of the *Vibrio cholerae* bacteria in the environment, thereby stopping new infections and preventing large-scale outbreaks. *Health education* - While important for promoting good hygiene practices like handwashing and safe food preparation, **health education alone** is often insufficient to control a widespread cholera epidemic without concomitant improvements in infrastructure. - It may improve individual behaviors but does not address the fundamental environmental contamination that drives large outbreaks. *Mass chemoprophylaxis with tetracycline* - Administering antibiotics like **tetracycline** to entire communities is not a sustainable or practical strategy for epidemic prevention. - It can lead to **antibiotic resistance**, has limited effectiveness in preventing widespread transmission, and carries potential side effects. *Vaccination of all individuals* - **Oral cholera vaccines** are effective and can be used in conjunction with other measures, especially during outbreaks or in high-risk areas. - However, achieving **universal vaccination** quickly enough to prevent an ongoing epidemic can be challenging due to logistical hurdles, cost, and vaccine availability, making it less immediate and comprehensive than addressing water and sanitation.
Question 4: A 6-year-old boy is admitted to the ward with drowsiness, dull deep tendon reflexes and seizures. On examination the child has a line on gums and there is a history of constipation. Which will be most appropriate drug that should be used for this child?
- A. EDTA
- B. DMSA (Correct Answer)
- C. BAL
- D. Penicillamine
Explanation: ***DMSA*** - The child's symptoms of **drowsiness**, **dull deep tendon reflexes**, **seizures**, a **gingival line**, and **constipation** are classic signs of **lead poisoning**. - **DMSA (dimercaptosuccinic acid)** is a chelating agent that is generally considered the **first-line treatment** for pediatric lead poisoning due to its oral administration, good safety profile, and efficacy in reducing lead levels. *Penicillamine* - While penicillamine is a chelating agent, it is **less commonly used** for lead poisoning in children due to a higher incidence of **side effects** compared to DMSA. - Its use is often reserved for patients who cannot tolerate other chelating agents or in specific situations. *EDTA* - **EDTA (ethylenediaminetetraacetic acid)** is a powerful chelator often used for severe lead poisoning, but it is typically administered **intravenously** or **intramuscularly**. - It is often combined with BAL to prevent redistribution of lead to the brain and is not usually the first choice for chronic, less severe lead poisoning in an ambulatory setting. *BAL* - **BAL (British Anti-Lewisite)**, or **dimercaprol**, is an oil-based intramuscular injection and is usually reserved for **severe lead encephalopathy**. - It has a high incidence of **adverse effects** and should not be used as monotherapy for lead poisoning due to the risk of redistributing lead to the brain; it is typically administered with EDTA for very high lead levels.
Question 5: Synovial fluid contains-
- A. Keratan sulphate
- B. Hyaluronic acid (Correct Answer)
- C. Dermatan sulphate
- D. Chondroitin sulphate
Explanation: ***Hyaluronic acid*** - **Hyaluronic acid** is a major component of **synovial fluid**, providing **viscosity** and **lubrication** to joints, which is crucial for reducing friction between articular cartilages. - It's a **glycosaminoglycan** (GAG) responsible for the fluid's unique rheological properties, maintaining joint health and function. *Keratan sulphate* - **Keratan sulphate** is primarily found in **cartilage**, **cornea**, and **bone**, contributing to their structural integrity. - It is not a significant component of **synovial fluid** itself; rather, it is part of the extracellular matrix of surrounding tissues. *Dermatan sulphate* - **Dermatan sulphate** is typically found in **skin**, **blood vessels**, and **heart valves**, where it plays a role in tissue organization and repair. - It is not a characteristic or primary component of **synovial fluid**. *Chondroitin sulphate* - **Chondroitin sulphate** is a GAG abundant in **cartilage**, contributing to its **compressive strength** and elasticity. - While essential for **joint health**, it is found within the cartilage matrix, not freely in high concentrations within the **synovial fluid**.
Question 6: Which substance is secreted by the cells of the stratum intermedium?
- A. Hyaluronic acid.
- B. Acid phosphatase.
- C. Alkaline phosphatase. (Correct Answer)
- D. None of the options.
Explanation: ***Alkaline phosphatase*** - Cells of the **stratum intermedium** are known to secrete and be rich in **alkaline phosphatase**. - This enzyme plays a crucial role in dental hard tissue formation, particularly during **enamel maturation**. *Hyaluronic acid* - **Hyaluronic acid** is a component of the **extracellular matrix** found in various connective tissues throughout the body, but it is not specifically secreted by the stratum intermedium. - Its primary functions include lubrication and tissue hydration. *Acid phosphatase* - **Acid phosphatase** is an enzyme found in lysosomes and is involved in various catabolic processes, particularly in breaking down organic phosphates. - It is not a characteristic secretion of the stratum intermedium during tooth development. *None of the options* - This option is incorrect because **alkaline phosphatase** is indeed secreted by the cells of the stratum intermedium. - The stratum intermedium is highly active metabolically, and the presence of this enzyme is vital for its role in enamel formation.
Question 7: The following table shows the 'Total Fertility Rate (TFR)' by the Wealth Index, as per the National Family Health Survey, (NFHS–4) findings. Which among the following is/are correct about the information?
- A. 2. The information given in the table can be presented as a pie chart.
- B. 4. Each of the higher divisions of the Wealth Index had lower TFR than the previous (or lower) division. (Correct Answer)
- C. 1. The divisions of Wealth Index in the NFHS–4 can be called 'quartiles'.
- D. 3. The Wealth Index was calculated in NFHS–4 by asking about the per capita income.
Explanation: ***Each of the higher divisions of the Wealth Index had lower TFR than the previous (or lower) division.*** - Examining the table data: Lowest (3.17), Second (2.45), Middle (2.07), Fourth (1.84), Highest (1.54) - The **Total Fertility Rate consistently decreases** as the wealth index category increases from lowest to highest - This demonstrates an **inverse relationship between wealth and fertility**, a well-established demographic pattern - Each successive higher wealth category shows a lower TFR than the previous category without exception *The divisions of Wealth Index in the NFHS–4 can be called 'quartiles'.* - The table divides the population into **five wealth index categories**: Lowest, Second, Middle, Fourth, and Highest - When a population is divided into five equal groups, these are called **quintiles**, not quartiles - **Quartiles** would divide the population into four groups (25th, 50th, 75th, 100th percentiles) - **Quintiles** divide the population into five groups (20th, 40th, 60th, 80th, 100th percentiles) *The information given in the table can be presented as a pie chart.* - A **pie chart** is used to show parts of a whole, representing proportions or percentages that sum to 100% - The data shows **Total Fertility Rate (TFR)** values for different wealth categories, which are rates (average births per woman), not proportions - TFR values don't sum to a meaningful total and don't represent parts of a whole - This data is better presented as a **bar chart or line graph** to show the trend across wealth categories *The Wealth Index was calculated in NFHS–4 by asking about the per capita income.* - The **Wealth Index** in NFHS surveys is calculated using **principal component analysis** of household assets and characteristics - It includes: consumer durables (TV, refrigerator, vehicles), housing characteristics (flooring type, wall material, roof type), water source, sanitation facilities, cooking fuel, and livestock ownership - **Per capita income is NOT used** because it's difficult to measure accurately in informal economies, has seasonal variations, and suffers from recall bias and underreporting - Asset-based wealth indices are considered more reliable proxies for socioeconomic status in developing countries
Question 8: A 60 year old woman is seen at an emergency room after she fractures the neck of her right femur during a minor fall. Radiologic studies demonstrate a generalized loss of bone mass. Exogenous therapy with which of the following hormones would have been most likely to slow or prevent the patient's bone disease?
- A. Epinephrine
- B. Thyroxine
- C. Cortisol
- D. Estrogen (Correct Answer)
Explanation: ***Estrogen*** - **Estrogen deficiency** post-menopause is a primary cause of **osteoporosis** in women due to increased osteoclast activity and bone resorption. - **Exogenous estrogen therapy** could have helped prevent bone loss by inhibiting osteoclast activity and promoting osteoblast function. *Epinephrine* - **Epinephrine** is a catecholamine primarily involved in the **fight-or-flight response**, affecting cardiovascular function and metabolism. - It does not have a direct therapeutic role in preventing **generalized bone mass loss** or treating osteoporosis. *Thyroxine* - **Thyroxine (thyroid hormone)**, especially in excess, can actually accelerate bone turnover and lead to **bone loss** and increased fracture risk. - It is not used to prevent osteoporosis; managing thyroid dysfunction is crucial to bone health. *Cortisol* - **Cortisol** is a glucocorticoid that, when in excess (e.g., in Cushing's syndrome or long-term steroid use), can cause **osteoporosis** by inhibiting bone formation and increasing bone resorption. - Therefore, exogenous cortisol would exacerbate, not prevent, the patient's bone disease.
Question 9: Cone of light focuses on which quadrant of tympanic membrane?
- A. Anteroinferior (Correct Answer)
- B. Posteroinferior
- C. Anterosuperior
- D. Posterosuperior
Explanation: ***Anteroinferior*** - The **cone of light** (or light reflex) is a characteristic triangular reflection of the otoscope's light, normally visible in the **anteroinferior quadrant** of a healthy tympanic membrane. - Its presence indicates a **healthy, intact eardrum** with normal tension and transparency; its absence or distortion can suggest pathology. *Posteroinferior* - While part of the tympanic membrane, the **posteroinferior quadrant** does not normally exhibit the focused cone of light. - This area is more often associated with the **round window niche** on its medial aspect in relation to the middle ear. *Anterosuperior* - The **anterosuperior quadrant** is located above the handle of the malleus and does not show the cone of light reflection. - This area contains the **anterior malleolar fold** and part of the **pars flaccida** (attic region). *Posterosuperior* - The **posterosuperior quadrant** is also not the usual site for the cone of light. - This area is relevant for the proximity to the **facial nerve** and structures like the **long process of the incus**.
Question 10: A woman delivers a healthy baby with weight 2.2 kg at the time of birth. What measures are to be taken? 1. The baby should be exclusively breast fed for first six months 2. The vaccination with OPV and BCG should be delayed till the baby is 2.5 kg of weight 3. Baby should be kept with mother and kangaroo care to be given Select the correct answer using the code given below:
- A. 2 and 3 only
- B. 1 and 2 only
- C. 1, 2 and 3
- D. 1 and 3 only (Correct Answer)
Explanation: ***1 and 3 only*** - **Exclusive breastfeeding** for the first six months is crucial for **nutrition** and **immunity**, especially for low birth weight babies. - **Kangaroo Mother Care (KMC)**, involving skin-to-skin contact, helps regulate the baby's temperature, promotes bonding, and supports weight gain in LBW infants. *2 and 3 only* - While **Kangaroo Mother Care (KMC)** is appropriate for this baby, the recommendation to delay vaccination is incorrect. - **BCG vaccination** should be given at birth to babies weighing **≥2 kg** as per IAP guidelines, so a 2.2 kg baby qualifies for immediate vaccination. *1 and 2 only* - **Exclusive breastfeeding** is appropriate, but delaying vaccinations is not indicated for a baby weighing 2.2 kg. - **BCG** is given at birth for babies ≥2 kg, and routine immunization schedule should be followed without delay based on birth weight alone. *1, 2 and 3* - While statements 1 and 3 correctly identify beneficial practices (exclusive breastfeeding and kangaroo care), statement 2 is incorrect. - **Vaccination guidelines** (IAP/UIP) recommend administering **BCG at birth** for babies ≥2 kg, and routine immunizations as per schedule without weight-based delays for a 2.2 kg baby.
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