NEET-PG 2012 Practice Questions

Q: What is the best indicator of the availability, utilization, and effectiveness of health services?

IMR. ***IMR*** - The **Infant Mortality Rate (IMR)** is widely considered the best single indicator of the availability, utilization, and effectiveness of health services because it reflects the health status of a population and the quality of prenatal, perinatal, and postnatal care. - A lower IMR generally indicates better access to maternal and child healthcare, nutrition, sanitation, and overall societal development. *MMR* - The **Maternal Mortality Ratio (MMR)** reflects the risk of maternal death relative to the number of live births and is a measure of the quality of maternal healthcare services. - While important, MMR focuses specifically on maternal health outcomes and does not encompass the broader availability and effectiveness of health services for all age groups as comprehensively as IMR. *Hospital bed OCR* - **Hospital bed occupancy rate (OCR)** indicates the proportion of available hospital beds that are occupied over a given period, reflecting the utilization of hospital resources. - While it offers insight into hospital efficiency and demand, it does not directly reflect the overall availability, effectiveness, or quality of primary care, preventive services, or broader public health interventions. *DALY* - **Disability-Adjusted Life Years (DALY)** measure the total number of healthy life years lost due to premature mortality and disability from disease or injury. - DALYs provide a comprehensive measure of disease burden but are more focused on quantifying the impact of diseases and injuries on health than on directly assessing the availability, utilization, and effectiveness of health services themselves.

Q: Which of the following statements is true for a left-skewed distribution?

Median > Mean. ***Median > Mean*** - In a **left-skewed distribution**, the bulk of the data is on the right, and the tail extends to the left, pulling the **mean** towards the lower values. - This pull results in the **mean** being less than the **median**, which is less affected by extreme values in the tail. *Mean = Median* - This relationship holds true for a **symmetrical distribution**, such as a **normal distribution**, where the data is evenly distributed around the center. - In a **skewed distribution**, the mean and median will diverge due to the presence of outliers or extreme values on one side. *Mean>Mode* - This statement is characteristic of a **right-skewed distribution**, where the tail extends to the right, pulling the **mean** to a higher value than the **mode**. - In a right-skewed distribution, typically **mode < median < mean**. *Mean < Mode* - This statement indicates that the **mode** (the most frequent value) is greater than the **mean**, which is not a defining characteristic of a left-skewed distribution. - While it can occur, the primary relationship for left-skewness is **mean < median**.

Q: What is the primary electrolyte found in Oral Rehydration Salts (ORS) at a concentration of 75 mEq/L?

Sodium. ***Sodium*** - The primary electrolyte in **Oral Rehydration Salts (ORS)** is **sodium**, which is crucial for replacing losses due to diarrhea and facilitating water absorption in the intestines [1]. - The standard ORS formulation, recommended by the WHO, contains **75 mEq/L of sodium** to effectively rehydrate individuals with acute watery diarrhea [1]. *Potassium* - While **potassium** is an essential electrolyte found in ORS, its concentration is typically lower than sodium, usually around **20 mEq/L**. - Potassium helps replenish intracellular losses and supports normal cellular function, but it is not the primary electrolyte at the 75 mEq/L concentration. *Glucose* - **Glucose** is a crucial component of ORS, but it is a sugar, not an electrolyte. - Its role is to facilitate the co-transport of **sodium and water** across the intestinal wall, enhancing fluid absorption, but it does not contribute to the electrolyte concentration in mEq/L [1]. *Chloride* - **Chloride** is an electrolyte present in ORS, primarily to balance the charge of **sodium** and prevent hyynatremia. - Its concentration is typically around **65 mEq/L**, making it slightly less concentrated than sodium but still vital for maintaining electrolyte balance.

Q: According to WHO guidelines, what prevalence of Bitot's spots indicates a public health problem?

≥ 0.5% prevalence. ***≥ 0.5% prevalence*** - According to **WHO guidelines**, a prevalence of Bitot's spots of **≥ 0.5%** (greater than or equal to 0.5%) in children aged 6-71 months indicates a **moderate public health problem** related to **vitamin A deficiency**. - This threshold is used for **programmatic decision-making** and intervention strategies to combat **xerophthalmia** (vitamin A deficiency eye disease). - At **≥ 1.0%** prevalence, it indicates a **severe public health problem**. *> 1% prevalence* - While ≥ 1% prevalence indicates a **severe public health problem**, the **initial WHO threshold** for identifying a public health problem due to **vitamin A deficiency** as indicated by Bitot's spots is **≥ 0.5%**. - This allows for **earlier public health action** before the situation becomes severe. *> 2% prevalence* - A prevalence of 2% implies a **critical vitamin A deficiency situation**, far exceeding the **WHO's diagnostic threshold** for initiating public health interventions. - Interventions would be critically urgent at this level, but the criteria for recognizing a problem are met at **≥ 0.5%**. *None of the options* - This option is incorrect because the **WHO has specific guidelines** for the prevalence of **Bitot's spots** that indicate a public health problem. - The correct threshold of **≥ 0.5%** is provided among the choices, which is the established criterion for a **moderate public health problem**.

Q: Aseptate hyphae is not seen in which of the following fungi?

Aspergillus. ***Correct: Aspergillus*** - *Aspergillus* species are characterized by **septate hyphae** and **acute angle branching**, distinguishing them from zygomycetes. - They cause diseases such as **allergic bronchopulmonary aspergillosis (ABPA)**, aspergilloma, and invasive aspergillosis. - Since Aspergillus has septate hyphae, **aseptate hyphae are NOT seen** in Aspergillus. *Incorrect: Rhizopus* - *Rhizopus* is a zygomycete with **broad, ribbon-like, aseptate hyphae** and **right-angle/irregular branching**. - Common cause of **mucormycosis (zygomycosis)**, especially in immunocompromised individuals. *Incorrect: Mucor* - *Mucor* is another zygomycete with **aseptate hyphae** and **wide-angle branching**. - Causes mucormycosis, leading to severe infections primarily in patients with **diabetic ketoacidosis** or **hematologic malignancies**. *Incorrect: Penicillium* - *Penicillium* species possess **septate hyphae** with characteristic **brush-like (penicillus-shaped)** fruiting bodies. - While some produce antibiotics, certain species like *Talaromyces marneffei* can cause systemic infections in immunocompromised patients.

Q: Which type of congenital cataract is commonly associated with significant visual defects?

Nuclear cataract. ***Nuclear cataract*** - It involves the **nucleus** of the lens, which is the central and most visually critical part. - This type of cataract can cause **significant visual impairment** due to its central location and density, impacting early visual development. *Punctate Cataract* - These are **small, dot-like opacities** that are usually clinically insignificant and do not typically cause significant visual defects. - They are often **peripheral** or very fine, thus not obstructing the central visual axis. *Blue dot cataract* - Also known as **cerulean cataract**, this type consists of small, bluish opacities in the lens cortex. - While congenital, it often has **minimal impact on vision** and is frequently observed incidentally. *Fusiform cataract* - This cataract forms in the shape of a **spindle or needle**, usually along the visual axis. - While it can sometimes cause minor visual compromise, its impact is generally **less severe** compared to a dense nuclear cataract.

Q: Recurrent anterior uveitis with increased intraocular tension is seen in which of the following conditions?

Posner-Schlossman syndrome. ***Posner-Schlossman syndrome*** - Characterized by **recurrent, unilateral, non-granulomatous anterior uveitis** associated with markedly **elevated intraocular pressure (IOP)**. - The condition is also known as **glaucomatocyclitic crisis**, highlighting the episodic inflammation and glaucoma. - Key features include **acute attacks** lasting hours to weeks with **dramatic IOP elevation** (often >40 mmHg). *Foster-Kennedy syndrome* - This syndrome is defined by ipsilateral **optic atrophy**, contralateral **papilledema**, and often **anosmia**, typically due to a frontal lobe tumor. - It does not involve anterior uveitis or primary elevated intraocular tension. - This is a neuro-ophthalmologic syndrome, not an inflammatory ocular condition. *Vogt-Koyanagi-Harada syndrome* - An autoimmune disorder affecting pigmented tissues, leading to **bilateral granulomatous panuveitis**, often with hearing loss, vitiligo, poliosis, and neurological symptoms. - While it involves uveitis, it is typically **bilateral and panuveitis**, not recurrent unilateral anterior uveitis. - IOP may be elevated but not the defining feature with dramatic episodic rises. *Fuchs heterochromic iridocyclitis* - A chronic, **unilateral, low-grade anterior uveitis** with characteristic iris heterochromia. - May have mild IOP elevation but **not recurrent episodic attacks** with marked pressure spikes. - Inflammation is typically **quiet and chronic** rather than acute and recurrent.

Q: The reduced effect of low astigmatism in dim light is primarily due to:

Pupil constriction. ***Pupil constriction*** - In dim light conditions, patients with low astigmatism may experience **reduced symptoms** due to the **pinhole effect** of pupil constriction when they squint or strain to see better. - **Pupil constriction** limits light entry to the central optical zone, reducing the effect of irregular corneal curvature by creating a smaller aperture that acts like a **stenopic slit**. - This **pinhole effect** improves depth of focus and reduces blur from astigmatism by eliminating peripheral aberrant rays. - When viewing in dim light, patients naturally squint to improve clarity, which mimics pupil constriction and reduces astigmatic blur. *Pupil dilatation* - **Pupil dilatation** in dim light would actually *increase* astigmatic symptoms, not reduce them. - A larger pupil allows more peripheral rays to enter the eye, which pass through areas of the lens and cornea with greater refractive error. - This increases the blur circle and worsens the optical quality in uncorrected astigmatism. *Increased curvature of lens* - **Increased lens curvature** (accommodation) increases refractive power but does not correct the unequal curvature of different meridians that defines astigmatism. - This would not specifically reduce astigmatic blur in dim light conditions. *Decreased curvature of lens* - **Decreased lens curvature** reduces refractive power and is associated with relaxed accommodation. - This does not address the fundamental issue of unequal meridional refraction in astigmatism.

Q: Which of the following is not used as treatment for lymphatic filariasis -

Praziquantel. ***Praziquantel*** - **Praziquantel** is primarily an **anthelmintic drug** effective against **schistosomiasis** and **tapeworm infections**. - It does not have a significant role in the treatment of **lymphatic filariasis**. *Ivermectin* - **Ivermectin** is one of the **mainstays** of treatment for **lymphatic filariasis**, particularly in combination therapies. - It works by paralyzing and killing **microfilariae**, reducing their numbers in the bloodstream. *DEC* - **Diethylcarbamazine (DEC)** is a **highly effective antifilarial drug** used to kill both **microfilariae** and **adult worms** in lymphatic filariasis. - It is often used in mass drug administration programs and for individual treatment. *Albendazole* - **Albendazole** is an **anthelmintic drug** often used in combination with **Ivermectin** or **DEC** for the treatment of **lymphatic filariasis**. - It helps to kill **microfilariae** and has some macrofilaricidal effects, reducing the viability of adult worms.

Q: What is Dinoprost?

Prostaglandin F2α (PGF2α). ***Prostaglandin F2α (PGF2α)*** - **Dinoprost** is the generic name for **Prostaglandin F2α**. - It works by stimulating **myometrial contractions** and promoting cervical ripening, making it useful in obstetrics. *Prostaglandin E2 (PGE2)* - **PGE2** is known as **Dinoprostone** and is also used for cervical ripening and labor induction. - While similar in function, **Dinoprostone** (PGE2) is distinct from **Dinoprost** (PGF2α). *Prostaglandin I2 (PGI2)* - **PGI2** is also known as **Prostacyclin** and acts as a potent **vasodilator** and **inhibitor of platelet aggregation**. - Its primary therapeutic uses are in conditions like **pulmonary hypertension**, which differs from Dinoprost's obstetric uses. *Prostaglandin E1 (PGE1)* - **PGE1** is also known as **Alprostadil** and is used to maintain the **patency of the ductus arteriosus** in neonates with certain congenital heart defects. - It is distinct from Dinoprost and has different clinical applications.

Question 1

What is the best indicator of the availability, utilization, and effectiveness of health services?

Accepted Answer

IMR

Answer

MMR

Answer

Hospital bed OCR

Answer

DALY

Question 2

Which of the following statements is true for a left-skewed distribution?

Accepted Answer

Median > Mean

Answer

Mean = Median

Answer

Mean>Mode

Answer

Mean < Mode

Question 3

What is the primary electrolyte found in Oral Rehydration Salts (ORS) at a concentration of 75 mEq/L?

Accepted Answer

Sodium

Answer

Potassium

Answer

Glucose

Answer

Chloride

Question 4

According to WHO guidelines, what prevalence of Bitot's spots indicates a public health problem?

Accepted Answer

≥ 0.5% prevalence

Answer

> 1% prevalence

Answer

> 2% prevalence

Answer

None of the options

Question 5

Aseptate hyphae is not seen in which of the following fungi?

Accepted Answer

Aspergillus

Answer

Rhizopus

Answer

Mucor

Answer

Penicillium

Question 6

Which type of congenital cataract is commonly associated with significant visual defects?

Accepted Answer

Nuclear cataract

Answer

Punctate Cataract

Answer

Blue dot cataract

Answer

Fusiform cataract

Question 7

Recurrent anterior uveitis with increased intraocular tension is seen in which of the following conditions?

Accepted Answer

Posner-Schlossman syndrome

Answer

Foster-Kennedy syndrome

Answer

Vogt-Koyanagi-Harada syndrome

Answer

Fuchs heterochromic iridocyclitis

Question 8

The reduced effect of low astigmatism in dim light is primarily due to:

Accepted Answer

Pupil constriction

Answer

Pupil dilatation

Answer

Increased curvature of lens

Answer

Decreased curvature of lens

Question 9

Which of the following is not used as treatment for lymphatic filariasis -

Accepted Answer

Praziquantel

Answer

DEC

Answer

Albendazole

Answer

Ivermectin

Question 10

What is Dinoprost?

Accepted Answer

Prostaglandin F2α (PGF2α)

Answer

Prostaglandin E2 (PGE2)

Answer

Prostaglandin I2 (PGI2)

Answer

Prostaglandin E1 (PGE1)

NEET-PG 2012

Community Medicine

Microbiology

Ophthalmology

Pharmacology