Non-Communicable Diseases Practice Questions

Q: Evidence of decreased risk of cardiovascular disease is associated with all of the following except?

Vitamin E supplementation. **Explanation:** The correct answer is **Vitamin E supplementation**. While Vitamin E is a potent antioxidant that theoretically prevents the oxidation of LDL cholesterol (a key step in atherosclerosis), large-scale randomized controlled trials (such as the HOPE and ATBC studies) have failed to show a significant reduction in cardiovascular events. In fact, some meta-analyses suggest that high-dose Vitamin E supplementation may even increase all-cause mortality. Therefore, it is not recommended for CVD prevention. **Analysis of other options:** * **Low to moderate daily alcohol consumption:** Epidemiological studies (the "J-shaped curve") indicate that moderate intake (1–2 drinks/day) is associated with increased HDL levels and reduced coronary heart disease risk compared to heavy drinkers or abstainers. * **Regular physical activity:** Exercise improves endothelial function, lowers blood pressure, increases HDL, and improves insulin sensitivity, all of which are strongly linked to decreased CVD risk. * **Potassium:** High potassium intake (found in fruits and vegetables) promotes sodium excretion and reduces vascular tone. It is a cornerstone of the DASH diet and is proven to lower blood pressure and stroke risk. **High-Yield Clinical Pearls for NEET-PG:** * **Antioxidant Paradox:** Despite observational data favoring Vitamins A, C, and E, clinical trials do not support their use for CVD prevention. * **PUFA vs. Saturated Fats:** Replacing saturated fats with Polyunsaturated Fatty Acids (PUFA) reduces CVD risk (P:S ratio should be 0.8–1.0). * **Fiber:** A high intake of dietary fiber (especially soluble fiber) is protective against CVD by lowering LDL cholesterol.

Q: What is the mode of prevention in Coronary Heart Disease (CHD)?

Primordial prevention. ### Explanation **Why Primordial Prevention is Correct:** Primordial prevention is defined as the prevention of the **emergence or development of risk factors** in population groups where they have not yet appeared. In the context of Coronary Heart Disease (CHD), the primary risk factors are lifestyle-related (e.g., smoking, obesity, sedentary lifestyle, and high salt intake). Since CHD is a "lifestyle disease," the most effective long-term strategy is to discourage these habits through individual and mass education *before* the risk factors develop. This is considered the "best" mode of prevention for non-communicable diseases (NCDs) like CHD. **Analysis of Incorrect Options:** * **High-risk Strategy (A):** This is a form of **Primary Prevention** that focuses on individuals already at high risk (e.g., those with hypertension or high cholesterol). It aims to prevent the *onset* of disease but does not prevent the *emergence* of the risk factor itself. * **Secondary Prevention (C):** This involves **early diagnosis and prompt treatment** (e.g., using statins or aspirin in a patient already diagnosed with CHD) to prevent complications or recurrence. * **Tertiary Prevention (D):** This focuses on **disability limitation and rehabilitation** (e.g., cardiac rehabilitation after a myocardial infarction) to improve quality of life and reduce impairment. **NEET-PG High-Yield Pearls:** * **Primordial Prevention** is the hallmark of NCD control (CHD, Hypertension, Type 2 Diabetes). * **Primary Prevention** (General population/High-risk) aims to reduce *incidence*. * **Secondary Prevention** aims to reduce *prevalence* by shortening the duration of disease. * **Quaternary Prevention** (Bonus): Actions taken to identify patients at risk of over-medicalization and protect them from unnecessary medical interventions.

Q: Which of the following is not a risk factor for the development of diabetes mellitus?

High intake of vitamin A. **Explanation:** The correct answer is **D. High intake of vitamin A**. Vitamin A is a fat-soluble vitamin essential for vision and immune function, but there is no established clinical evidence linking its high intake to an increased risk of Diabetes Mellitus (DM). In fact, some studies suggest that beta-carotene (a precursor) may have protective antioxidant properties. **Analysis of Options:** * **Sedentary Lifestyle (Option A):** Physical inactivity is a primary modifiable risk factor for Type 2 DM. It leads to obesity and decreased insulin sensitivity in skeletal muscles, promoting insulin resistance. * **Protein-Energy Malnutrition (PEM) in Infancy (Option B):** This is a high-yield concept known as the **Barker Hypothesis** (Fetal Origins of Adult Disease). Malnutrition during early development can lead to permanent changes in pancreatic beta-cell mass and function, increasing the risk of "Malnutrition-Related Diabetes Mellitus" (MRDM) or Type 2 DM in adulthood. * **Excessive Intake of Alcohol (Option C):** Chronic alcohol consumption is a risk factor as it can cause chronic pancreatitis (leading to secondary diabetes) and contributes to obesity and hepatic insulin resistance. **NEET-PG High-Yield Pearls:** * **Modifiable Risk Factors for DM:** Obesity (BMI >25 kg/m²), physical inactivity, hypertension, and dyslipidemia. * **Non-Modifiable Risk Factors:** Age, family history (stronger genetic link in Type 2 than Type 1), and history of Gestational Diabetes. * **Rule of Halves:** DM follows the "Rule of Halves"—half of the cases are undiagnosed, and half of those diagnosed are not under care. * **Screening:** The WHO recommends screening for DM in individuals aged 30+ with one or more risk factors.

Q: A person is said to have died due to a road traffic accident if the death occurs within how many days of the accident?

30 days. **Explanation:** The definition of a death due to a Road Traffic Accident (RTA) is standardized globally for statistical and epidemiological purposes. According to the **World Health Organization (WHO)** and the **Vienna Convention on Road Traffic**, a road accident fatality is defined as any person who dies immediately or **within 30 days** as a result of the injury sustained in the accident. **Why 30 days is correct:** This timeframe is used to ensure uniformity in reporting across different countries. It accounts for delayed deaths resulting from secondary complications of the initial trauma, such as sepsis, multi-organ failure, or pulmonary embolism, while maintaining a clear causal link to the accident. **Analysis of Incorrect Options:** * **Option A (12 days):** This is an arbitrary number with no clinical or legal significance in mortality reporting. * **Option C (40 days):** While some legal systems (like the Indian Penal Code Section 320) use 20 days to define "grievous hurt," 40 days is not a standard cutoff for RTA mortality. * **Option D (47 days):** This is incorrect and does not correspond to any standard epidemiological definition in Community Medicine. **High-Yield Clinical Pearls for NEET-PG:** * **The Golden Hour:** The first 60 minutes following the trauma where prompt medical intervention has the highest likelihood of preventing death. * **Epidemiological Triad of RTA:** Includes the **Agent** (the vehicle), the **Host** (the driver/pedestrian), and the **Environment** (road conditions, weather, lighting). * **Haddon’s Matrix:** A vital framework used to analyze RTAs based on three phases: Pre-crash, Crash, and Post-crash. * **Leading Cause of Death:** RTAs are the leading cause of death globally for children and young adults aged 5–29 years.

Q: A 2-year-old boy presents with cough, fever, and difficulty in breathing. His respiratory rate is 50/min. There is no chest indrawing. Auscultation of the chest reveals bilateral crepitations. What is the most probable diagnosis?

Pneumonia. This question is based on the **Integrated Management of Neonatal and Childhood Illness (IMNCI)** guidelines, which are high-yield for NEET-PG. The classification of acute respiratory infections in children aged 2 months to 5 years is based on clinical signs: respiratory rate, chest indrawing, and danger signs. ### **Explanation of the Correct Answer** **Option C (Pneumonia)** is correct because the child has **fast breathing** without any "red flag" signs. * For a child aged **12 months to 5 years**, fast breathing is defined as a **Respiratory Rate (RR) ≥ 40 breaths/min**. * This child’s RR is 50/min, confirming fast breathing. * The absence of chest indrawing or general danger signs classifies this specifically as "Pneumonia" under IMNCI. ### **Why Other Options are Incorrect** * **Option A & B (Very Severe/Severe Pneumonia):** In the updated IMNCI/WHO guidelines, these are often grouped. They require the presence of **chest indrawing** (Severe) or **General Danger Signs** (Very Severe), such as inability to drink/breastfeed, persistent vomiting, lethargy/unconsciousness, or convulsions. This child has none of these. * **Option D (No Pneumonia):** This classification is used when a child has a cough/cold but the RR is normal (e.g., <40/min for this age) and no chest indrawing is present. ### **NEET-PG High-Yield Pearls** 1. **RR Thresholds for Fast Breathing:** * < 2 months: ≥ 60/min * 2–12 months: ≥ 50/min * 12 months–5 years: ≥ 40/min 2. **Management:** "Pneumonia" is treated with oral Amoxicillin at home for 5 days. "Severe Pneumonia" requires urgent referral and IV antibiotics (Ampicillin + Gentamicin). 3. **Auscultation:** While crepitations are mentioned, IMNCI classification relies primarily on **inspection** (RR and indrawing) to facilitate use by peripheral health workers.

Q: The WHO STEPS instrument is used for monitoring which type of diseases?

Non-communicable diseases. **Explanation:** The **WHO STEPwise approach to Surveillance (STEPS)** is a standardized framework designed for the surveillance of risk factors for **Non-Communicable Diseases (NCDs)**. It is primarily used in low- and middle-income countries to collect data and monitor trends in chronic diseases like diabetes, hypertension, and cardiovascular disorders. The STEPS instrument follows a hierarchical structure of data collection: * **Step 1 (Socio-demographic and Behavioral):** Uses a questionnaire to assess tobacco/alcohol use, physical inactivity, and diet. * **Step 2 (Physical Measurements):** Includes objective data like blood pressure, height, weight, and waist circumference. * **Step 3 (Biochemical Measurements):** Involves blood samples to measure fasting blood glucose and cholesterol levels. **Analysis of Options:** * **Option A (Communicable diseases):** These are monitored via systems like the Integrated Disease Surveillance Programme (IDSP) or specific sentinel surveillance, focusing on pathogens and transmission. * **Options C & D (Immune-deficient/Autoimmune diseases):** These are specific clinical categories. While they are technically non-communicable, the STEPS instrument is specifically designed for lifestyle-related metabolic risk factors, not immunological profiling. **High-Yield Clinical Pearls for NEET-PG:** * **Target Population:** STEPS is generally conducted on adults aged 18–69 years. * **Global Burden:** NCDs (the "Silent Killers") account for over 70% of global deaths; STEPS helps in planning the **National Programme for Prevention and Control of Cancer, Diabetes, Cardiovascular Diseases and Stroke (NPCDCS)** in India. * **Key Indicator:** It is the gold standard for calculating the "Prevalence of Hypertension" and "Obesity" in a community.

Q: What is the most common carcinoma in females worldwide?

Breast. **Explanation:** According to the latest **GLOBOCAN** data (WHO), **Breast Cancer** has overtaken lung cancer to become the most commonly diagnosed cancer globally. In females specifically, it remains the leading cause of cancer incidence and mortality worldwide. * **Breast Cancer (Correct):** It is the most frequent cancer in women in both developed and developing countries. The rising incidence is attributed to changing lifestyles, late age at first childbirth, shorter duration of breastfeeding, and increased obesity. * **Cervix (Incorrect):** While Cervical Cancer was previously the leading cancer among women in India, recent data shows that Breast Cancer has surpassed it in most Indian registries. Globally, it ranks lower than breast and lung cancer. * **Lung (Incorrect):** Lung cancer is the leading cause of cancer-related *mortality* globally (combined sexes), but in terms of *incidence in females*, it ranks second or third depending on the region. * **Kidney (Incorrect):** Renal cell carcinoma is significantly less common than breast, lung, or colorectal cancers in females. **High-Yield Facts for NEET-PG:** * **Most common cancer worldwide (Overall):** Breast Cancer (surpassed Lung in 2020). * **Most common cancer in India (Females):** Breast Cancer (followed by Cervix). * **Most common cancer in India (Males):** Lip/Oral Cavity (followed by Lung). * **Leading cause of cancer death (Worldwide):** Lung Cancer. * **Leading cause of cancer death (India):** Lung Cancer (Males) and Breast Cancer (Females).

Question 1

Evidence of decreased risk of cardiovascular disease is associated with all of the following except?

Accepted Answer

Vitamin E supplementation

Answer

Low to moderate daily alcohol consumption

Answer

Regular physical activity

Answer

Potassium

Question 2

What type of surveillance is included in an integrated disease control program for non-communicable diseases?

Accepted Answer

Sentinel surveillance

Answer

Regular surveillance

Answer

Periodic regular survey

Answer

Additional state priority

Question 3

What is the mode of prevention in Coronary Heart Disease (CHD)?

Accepted Answer

Primordial prevention

Answer

High-risk strategy

Answer

Secondary prevention

Answer

Tertiary prevention

Question 4

Which of the following is not a risk factor for the development of diabetes mellitus?

Accepted Answer

High intake of vitamin A

Answer

Sedentary lifestyle

Answer

Protein-energy malnutrition in infancy

Answer

Excessive intake of alcohol

Question 5

A person is said to have died due to a road traffic accident if the death occurs within how many days of the accident?

Accepted Answer

30 days

Answer

12 days

Answer

40 days

Answer

47 days

Question 6

A 2-year-old boy presents with cough, fever, and difficulty in breathing. His respiratory rate is 50/min. There is no chest indrawing. Auscultation of the chest reveals bilateral crepitations. What is the most probable diagnosis?

Accepted Answer

Pneumonia

Answer

Very severe pneumonia

Answer

Severe pneumonia

Answer

No pneumonia

Question 7

What is the most effective approach for the prevention of non-communicable diseases?

Accepted Answer

Primordial prevention

Answer

Primary prevention

Answer

Specific protection

Answer

Secondary prevention

Question 8

The WHO STEPS instrument is used for monitoring which type of diseases?

Accepted Answer

Non-communicable diseases

Answer

Communicable diseases

Answer

Immune-deficient diseases

Answer

Autoimmune diseases

Question 9

Which is the most common cause of cancer-related death?

Accepted Answer

Lung cancer

Answer

Oral cancer

Answer

Breast cancer

Answer

Prostate cancer

Question 10

What is the most common carcinoma in females worldwide?

Accepted Answer

Breast

Answer

Cervix

Answer

Lung

Answer

Kidney

Non-Communicable Diseases — MCQs

Non-Communicable Diseases — MCQs

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