Non-Communicable Diseases — MCQs

Non-Communicable Diseases Indian Medical PG Practice Questions and MCQs

Question 131: The 'Know India Programme' evaluates risk factors of?

A. Diabetes
B. Coronary heart disease (Correct Answer)
C. Cancers
D. Obesity

Explanation: **Explanation:** The **Know India Programme (KIP)** is a specific epidemiological initiative designed to evaluate and screen for risk factors associated with **Coronary Heart Disease (CHD)**. In the context of Community Medicine, this program focuses on the rising burden of cardiovascular diseases in the Indian population, aiming to identify high-risk individuals through the assessment of parameters like blood pressure, lipid profiles, and lifestyle habits. * **Why Option B is correct:** CHD is the leading cause of mortality in India. The program emphasizes early detection of modifiable risk factors (hypertension, dyslipidemia, smoking) to implement primary and secondary prevention strategies specifically for heart disease. * **Why Options A, C, and D are incorrect:** While Diabetes (A), Cancers (C), and Obesity (D) are major Non-Communicable Diseases (NCDs) often addressed under the broader **NPCDCS** (National Programme for Prevention and Control of Cancer, Diabetes, Cardiovascular Diseases and Stroke), the "Know India Programme" specifically targets the cardiovascular risk profile. Obesity and Diabetes are often co-morbidities evaluated *within* the CHD risk assessment, but they are not the primary focus of this specific nomenclature. **High-Yield Clinical Pearls for NEET-PG:** * **Rule of Halves:** Often applied to Hypertension in CHD—half the people are aware, half of those are treated, and half of those are controlled. * **Framingham Risk Score:** The gold standard for predicting 10-year CHD risk. * **Metabolic Syndrome (Syndrome X):** A critical cluster of risk factors for CHD including abdominal obesity, high TG, low HDL, hypertension, and high fasting glucose. * **Key Indicator:** The "Know India Programme" is a frequent "one-liner" question; associate it directly with **CHD risk evaluation**.

Question 132: A 46-year-old female presents to the eye Outpatient Department with a right eye visual acuity of 6/60 and a left eye visual acuity of 3/60. What is the most appropriate classification of her vision?

A. Socially blind
B. Low vision (Correct Answer)
C. Economically blind
D. Normal vision

Explanation: ### Explanation This question tests your knowledge of the **WHO classification of visual impairment**, which is a high-yield topic for NEET-PG. **1. Why "Low Vision" is correct:** According to the WHO (ICD-10), visual impairment is classified based on the visual acuity in the **better eye** with best possible correction. * **Low Vision:** Visual acuity less than 6/18 but equal to or better than 3/60 in the better eye. * **Blindness:** Visual acuity less than 3/60 in the better eye. In this clinical scenario, the patient’s right eye is 6/60 and the left eye is 3/60. The **better eye is the right eye (6/60)**. Since 6/60 falls within the range of <6/18 to 3/60, she is classified as having **Low Vision**. **2. Why other options are incorrect:** * **Socially Blind (A):** This term refers to a visual acuity of <3/60 in the better eye (Category 3, 4, and 5 of WHO classification). Since her better eye is 6/60, she does not meet this criteria. * **Economically Blind (C):** This is a term used specifically under the **NPCB (National Programme for Control of Blindness)** in India, defined as visual acuity <6/60 in the better eye. While she is at the threshold, "Low Vision" is the standard WHO clinical classification. * **Normal Vision (D):** Normal vision is defined as 6/6 to 6/18. **3. High-Yield NEET-PG Pearls:** * **NPCB Definition of Blindness:** In India, the NPCB defines blindness as visual acuity **<3/60** in the better eye (updated to align with WHO). * **One-eyed person:** If one eye is 6/6 and the other is 0 (nil), the person is **not** considered blind by WHO standards because the better eye is normal. * **Visual Field:** Blindness also includes a visual field of less than 10 degrees around central fixation in the better eye.

Question 133: Which type of vaccine is available for Hepatitis A?

A. Live attenuated
B. Killed (Inactivated)
C. Both live and inactivated (Correct Answer)
D. Subunit vaccine

Explanation: **Explanation:** Hepatitis A virus (HAV) is a picornavirus primarily transmitted via the fecal-oral route. Unlike Hepatitis B, which uses a subunit vaccine, Hepatitis A prevention relies on both **Live Attenuated** and **Inactivated (Killed)** vaccines. 1. **Why "Both" is correct:** * **Inactivated Vaccine (e.g., Havrix, Vaqta):** This is the most widely used version globally. It is administered in two doses (0 and 6–12 months) and is highly immunogenic. * **Live Attenuated Vaccine (e.g., H2 strain):** Developed primarily in China and available in India (Biovac-A), it is administered as a single subcutaneous dose. It provides rapid immunity and is often more cost-effective. 2. **Analysis of Incorrect Options:** * **Option A & B:** These are partially correct but incomplete. Since both formulations are commercially available and used in clinical practice, "Both" is the most accurate choice. * **Option D (Subunit):** This is incorrect for Hepatitis A. Subunit vaccines (Recombinant HBsAg) are the hallmark of **Hepatitis B** vaccination, not Hepatitis A. **High-Yield Clinical Pearls for NEET-PG:** * **Post-Exposure Prophylaxis (PEP):** The Hepatitis A vaccine can be used for PEP if given within **14 days** of exposure. * **Schedule:** Inactivated vaccine is given at 1 year of age (2 doses); Live vaccine is given as a single dose after 12 months of age. * **Indication:** Travelers to endemic areas, men who have sex with men (MSM), chronic liver disease patients, and sewage workers. * **Efficacy:** Both vaccines provide long-term protection (>20 years), though the inactivated version has more extensive long-term data.

Question 134: Risk modification for Coronary Artery Disease (CAD) falls under which category of prevention?

A. Primordial prevention (Correct Answer)
B. Primary prevention
C. Secondary prevention
D. Tertiary prevention

Explanation: **Explanation:** The correct answer is **Primordial Prevention**. This level of prevention focuses on preventing the **emergence or development of risk factors** in population groups where they have not yet appeared. 1. **Why Primordial Prevention is correct:** In the context of Coronary Artery Disease (CAD), "risk modification" refers to addressing the root causes—such as sedentary lifestyles, poor dietary habits, and smoking—before they manifest as clinical risk factors like hypertension or obesity. By promoting healthy behaviors in childhood and adolescence, we prevent the "risk of the risk factor," which is the hallmark of primordial prevention. 2. **Why other options are incorrect:** * **Primary Prevention:** This involves action taken when a risk factor is **already present** (e.g., treating a patient with hypertension or high cholesterol) to prevent the onset of the disease (the first cardiac event). * **Secondary Prevention:** This focuses on **early diagnosis and prompt treatment** (e.g., using Aspirin or Statins after a patient has already experienced angina or a myocardial infarction) to prevent complications or recurrence. * **Tertiary Prevention:** This involves **rehabilitation** and limiting disability in late stages of the disease (e.g., cardiac rehabilitation post-CABG). **High-Yield Clinical Pearls for NEET-PG:** * **Primordial prevention** is the best strategy for non-communicable diseases (NCDs) like CAD, Stroke, and Type 2 Diabetes. * **Mode of Intervention:** For Primordial prevention, it is primarily **Individual and Mass Education**. * **Key Distinction:** If the question mentions "treating hypertension," it is Primary Prevention. If it mentions "preventing the development of hypertension through lifestyle changes," it is Primordial Prevention.

Question 135: Which of the following statements regarding tetanus is true?

A. A five-dose immunization provides lifelong immunity.
B. Tetanus toxoid affords no protection in the present injury.
C. Tetanus toxoid serves no use once 12 hours have elapsed following injury.
D. Tetanus toxoid and tetanus immunoglobulin may both be given in suspected tetanus. (Correct Answer)

Explanation: ### Explanation **Correct Option: D. Tetanus toxoid and tetanus immunoglobulin may both be given in suspected tetanus.** In cases of tetanus-prone wounds (e.g., contaminated with soil, deep punctures, or compound fractures) in individuals with uncertain or incomplete immunization, both **active immunization** (Tetanus Toxoid - TT/Td) and **passive immunization** (Tetanus Immunoglobulin - TIG) are indicated. This is known as **simultaneous immunization**. The TIG provides immediate, temporary neutralising antibodies, while the TT stimulates the body’s own immune system for long-term protection. To prevent interference, they must be administered at **different anatomical sites** using separate syringes. **Why other options are incorrect:** * **Option A:** A five-dose schedule (primary series + boosters) provides long-lasting immunity (approx. 20 years), but **not lifelong immunity**. Periodic boosters (every 10 years) are required to maintain protective antitoxin levels. * **Option B:** Tetanus toxoid is highly effective in the present injury as a booster dose if the patient was previously immunized, or as the start of a primary series to prevent future risk. * **Option C:** There is no "12-hour cutoff" for TT. While early administration is ideal, TT and TIG should be administered as soon as possible, even if the patient presents days after the injury. **High-Yield Clinical Pearls for NEET-PG:** * **Tetanus-Prone Wounds:** Wounds >6 hours old, >1 cm deep, contaminated (soil/feces), or containing devitalized tissue. * **Dosage:** Adult TIG dose is typically **250 IU** (IM). If the wound is heavily contaminated or >24 hours old, **500 IU** is preferred. * **Neonatal Tetanus:** Prevented by immunizing the mother. If a mother is unimmunized, she receives 2 doses of Td (4 weeks apart), with the second dose at least 2 weeks before delivery. * **Incubation Period:** Usually 3–21 days. The shorter the incubation period, the worse the prognosis.

Question 136: Which of the following is an example of a direct zoonosis?

A. Rabies (Correct Answer)
B. Brucellosis
C. Taeniasis
D. Hydatid disease

Explanation: ### Explanation **Concept of Direct Zoonosis:** A **direct zoonosis** is a disease transmitted from an infected vertebrate host to a susceptible human host by direct contact, contact with a fomite, or by a mechanical vector. Crucially, the agent undergoes **no essential developmental change or propagation** during transmission. **Rabies** is the classic example, as the virus is transmitted directly through the saliva of an infected animal (usually via a bite) and remains unchanged during the transfer. **Analysis of Incorrect Options:** * **Brucellosis:** While often categorized as a direct zoonosis in simplified texts, it is technically a **cyclo-zoonosis** or direct zoonosis depending on the classification system used. However, in the context of standard NEET-PG questions based on Park’s Textbook, Rabies is the primary prototype for "Direct Zoonosis." * **Taeniasis:** This is a **cyclo-zoonosis**. These require more than one vertebrate host species (e.g., humans and cattle/pigs) to complete the agent’s life cycle, but no invertebrate host. * **Hydatid Disease (Echinococcosis):** This is also a **cyclo-zoonosis**, requiring both a definitive host (dogs) and an intermediate host (sheep/humans) to complete the life cycle. **High-Yield NEET-PG Pearls:** * **Metazoonoses:** Diseases that require both a vertebrate host and an invertebrate host (e.g., Plague, Malaria, Schistosomiasis). * **Saprozoonoses:** Diseases that require a non-animal site like soil or plants for the agent to develop (e.g., Tetanus, Histoplasmosis). * **Rabies Fact:** It is 100% fatal but 100% preventable. The incubation period is highly variable (usually 1–3 months) depending on the distance of the bite from the CNS.

Question 137: What is the denominator for calculating the crude birth rate?

A. Total number of live births in that year
B. 1000 live births
C. Total number of births
D. Mid-year population (Correct Answer)

Explanation: ### Explanation The **Crude Birth Rate (CBR)** is the simplest and most common measure of fertility. It represents the number of live births per 1,000 population in a given year. **1. Why "Mid-year population" is correct:** In demography, the population of an area changes daily due to births, deaths, and migration. To standardize the denominator, the **Mid-year population (as of July 1st)** is used. It serves as an estimate of the "average" population at risk during that year. * **Formula:** $\frac{\text{Number of live births during the year}}{\text{Estimated mid-year population}} \times 1000$ **2. Why the other options are incorrect:** * **A & B (Total number of live births / 1000 live births):** These are used as the **denominator** for mortality indicators like the Infant Mortality Rate (IMR) or Maternal Mortality Ratio (MMR), not for birth rates. * **C (Total number of births):** This includes stillbirths. The CBR specifically only counts **live births** in the numerator. **3. NEET-PG High-Yield Pearls:** * **Fertility vs. Fecundity:** Fertility refers to actual reproductive performance (live births), while fecundity refers to the physiological capacity to bear children. * **General Fertility Rate (GFR):** A better measure than CBR because the denominator is restricted to the "at-risk" group—women of reproductive age (15–44 or 15–49 years). * **Total Fertility Rate (TFR):** The average number of children a woman would have if she survives to the end of her reproductive life; it is the best indicator of overall fertility levels. * **Replacement Level Fertility:** A TFR of **2.1** is considered the level at which a population exactly replaces itself from one generation to the next.

Question 138: Beer consumption is associated with which of the following carcinomas?

A. Carcinoma of the cervix
B. Carcinoma of the liver
C. Carcinoma of the rectum (Correct Answer)
D. Carcinoma of the colon

Explanation: **Explanation:** The association between alcohol consumption and malignancy is well-established, but specific types of alcohol are epidemiologically linked to specific sites. **1. Why Option C is correct:** Epidemiological studies have consistently demonstrated a strong and specific association between **beer consumption and Rectal Cancer**. While general alcohol intake increases the risk of various gastrointestinal cancers, beer contains specific nitrosamines (formed during the malting process) and other congeners that are thought to exert a more potent carcinogenic effect on the rectal mucosa compared to other alcoholic beverages. **2. Why other options are incorrect:** * **Carcinoma of the Cervix:** This is primarily associated with High-Risk Human Papillomavirus (HPV 16, 18) infection and early sexual activity; alcohol is not a primary risk factor. * **Carcinoma of the Liver:** While chronic alcohol consumption leads to cirrhosis and subsequent Hepatocellular Carcinoma (HCC), this is linked to the **total quantity of ethanol** consumed over time (regardless of the beverage type) rather than beer specifically. * **Carcinoma of the Colon:** Although often grouped with rectal cancer (Colorectal Cancer), the association with beer is statistically significantly stronger for the **rectum** than for the colon. **3. High-Yield Clinical Pearls for NEET-PG:** * **Alcohol & Cancer:** Alcohol is a known risk factor for cancers of the oral cavity, pharynx, larynx, esophagus, liver, breast, and colorectum. * **Acetaldehyde:** The primary metabolite of ethanol, acetaldehyde, is classified as a Group 1 carcinogen by the IARC. * **Dietary Fiber:** High intake of dietary fiber is the most significant *protective* factor against colorectal carcinomas. * **Nitrosamines:** These are the specific compounds in beer implicated in rectal carcinogenesis.

Question 139: Which of the following is NOT a component of the National Programme for Prevention and Control of Cancer, Diabetes, Cardiovascular Diseases and Stroke (NPCDCS)?

A. Screening of blood pressure and blood glucose at sub-centers
B. Diagnosis and treatment at sub-centers (Correct Answer)
C. Health promotion at the district level
D. A single center for cancer, diabetes, cardiovascular diseases, and stroke

Explanation: ### Explanation The **National Programme for Prevention and Control of Cancer, Diabetes, Cardiovascular Diseases and Stroke (NPCDCS)**, now subsumed under the National Programme for Prevention & Control of Non-Communicable Diseases (NP-NCD), follows a tiered healthcare delivery model. **Why Option B is the Correct Answer:** Under NPCDCS guidelines, **Sub-centers (and Health & Wellness Centers)** are primarily responsible for **screening, health promotion, and follow-up care**. They are not equipped for the definitive **diagnosis and treatment** of NCDs. Diagnosis and initiation of treatment are mandated at higher levels, specifically at **Primary Health Centers (PHCs)** or **Community Health Centers (CHCs)** and above, where medical officers and specialized diagnostic facilities are available. **Analysis of Incorrect Options:** * **Option A:** Opportunistic screening for hypertension (blood pressure) and diabetes (blood glucose) is a core activity at the sub-center level for all individuals aged 30 years and above. * **Option C:** Health promotion through behavior change communication (BCC) regarding diet, physical activity, and tobacco cessation is a key pillar of the program at the district and community levels. * **Option D:** The program aims to integrate NCD services through "NCD Clinics" established at District Hospitals and CHCs, providing a single window for the management of these four major diseases. **NEET-PG High-Yield Pearls:** * **Target Age:** Screening for NCDs under NPCDCS starts at **30 years**. * **NCD Clinic Locations:** Established at CHCs and District Hospitals. * **Cardiac Care Unit (CCU):** Mandated at the District Hospital level for emergency management of stroke and MI. * **Tertiary Care:** Supported through State Cancer Institutes (SCI) and Tertiary Care Cancer Centres (TCCC).

Question 140: What is considered fast breathing in a 2-year-old child?

A. More than 60 breaths per minute
B. More than 50 breaths per minute
C. More than 40 breaths per minute (Correct Answer)
D. More than 30 breaths per minute

Explanation: **Explanation:** The classification of "fast breathing" is a cornerstone of the **Integrated Management of Neonatal and Childhood Illness (IMNCI)** guidelines, used to diagnose and categorize pneumonia in children. The threshold for fast breathing is age-dependent, reflecting the physiological decrease in respiratory rate as a child matures. **Why Option C is Correct:** According to IMNCI and WHO criteria, for a child aged **12 months to 5 years (60 months)**, the threshold for fast breathing is **40 breaths per minute or more**. Since a 2-year-old falls within this age bracket, 40 bpm is the diagnostic cutoff. **Analysis of Incorrect Options:** * **Option A (>60 bpm):** This is the threshold for fast breathing in a **neonate (less than 2 months of age)**. * **Option B (>50 bpm):** This is the threshold for an infant aged **2 months to 12 months**. * **Option D (>30 bpm):** This is below the clinical threshold for any pediatric age group under IMNCI and would generally be considered a normal respiratory rate for a 2-year-old. **High-Yield Clinical Pearls for NEET-PG:** * **Counting Rule:** To accurately assess fast breathing, the child must be calm, and the respiratory rate must be counted for a **full 60 seconds**. * **IMNCI Classification:** * *Cough/Cold + Fast Breathing:* Classified as **Pneumonia** (Treat with oral Amoxicillin). * *Cough/Cold + Chest Indrawing:* Classified as **Severe Pneumonia** (Requires IV antibiotics and urgent referral). * **Memory Aid:** Remember the **60-50-40** rule for ages **<2m, 2-12m, and 1-5y** respectively.

Practice by Chapter

Epidemiology of NCDs

Practice Questions

Cardiovascular Disease Prevention

Practice Questions

Diabetes Control Program

Practice Questions

Cancer Screening and Control

Practice Questions

Chronic Respiratory Diseases

Practice Questions

Mental Health Program

Practice Questions

Blindness Control Program

Practice Questions

Accident and Injury Prevention

Practice Questions

NCD Risk Factor Surveillance

Practice Questions

National Program for Prevention and Control of Cancer, Diabetes, CVD, and Stroke

Practice Questions

Oral Health Program

Practice Questions

Geriatric Health Issues

Practice Questions

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