UPSC-CMS 2014 Practice Questions

Q: Which one of the following is included in Indian Public Health Standards for a Primary Health Centre?

Safe abortion services. ***Safe abortion services*** - **Indian Public Health Standards (IPHS)** for Primary Health Centres (PHCs) include the provision of safe abortion services, particularly for early pregnancies, to ensure women's reproductive health. - This is part of the comprehensive reproductive and child health services expected at the PHC level to reduce maternal mortality and morbidity. *Surgery for hydrocele* - **Surgical procedures** like hydrocelectomy are generally performed at **Community Health Centres (CHCs)** or district hospitals. - While basic outpatient care is provided at PHCs, major surgical interventions are beyond their typical scope and infrastructure. *Blood storage facility* - **Blood storage and transfusion facilities** require specialized equipment, personnel, and infrastructure. - These services are usually available at **higher-level facilities** like CHCs, district hospitals, or specialized blood banks, not typically at PHCs. *Manual removal of placenta* - While the **manual removal of the placenta (MRP)** is an emergency obstetric procedure, it is typically performed at facilities with better equipped **delivery rooms** and access to anesthesia, such as CHCs. - PHCs focus on basic emergency obstetric care and referral, but more complex procedures like MRP often require greater resources.

Q: The pattern of disease in a community described in terms of the important factors which influence its occurrence is known as:

Community diagnosis. ***Community diagnosis*** - This term refers to the process of identifying and characterizing the health problems and needs of a **defined population** or community, considering influencing factors. - It involves analyzing health status, risk factors, and available resources to plan effective interventions. *Experimental epidemiology* - This involves conducting **randomized controlled trials** and other intervention studies to test hypotheses about cause-and-effect relationships in disease. - It focuses on evaluating the effectiveness of interventions, rather than describing the entire pattern of disease occurrence. *Confounding* - **Confounding** occurs when a third variable distorts the observed association between an exposure and an outcome. - It is a bias that can mislead conclusions in observational studies, not a description of the disease pattern itself. *Iceberg phenomenon* - The **iceberg phenomenon** illustrates that only a fraction of severe cases of a disease (the "tip of the iceberg") are clinically apparent, while a larger proportion of subclinical or asymptomatic cases remain hidden. - It describes the hidden burden of disease, not the overall pattern or influencing factors.

Q: The term “disease control” describes the ongoing operations aimed at reducing all of the following, except:

Virulence of the disease agent. - ***Virulence of the disease agent*** - Disease control measures *do not aim* to reduce the **inherent virulence** of a pathogen itself; rather, they focus on preventing its transmission and mitigating its effects on individuals and populations. - Pathogen virulence is a characteristic of the organism, not a direct target of public health control strategies, which instead focus on **host protection** and **environmental control**. - *The financial burden to the community* - **Reducing the financial burden** of diseases is a key goal of disease control, as widespread illness can severely impact healthcare costs, productivity, and economic stability. - Effective control measures often lead to significant economic savings by preventing illness and reducing the need for costly treatments and long-term care. - *The incidence of disease* - A primary objective of disease control is to **lower the incidence** (new cases) of a disease within a population through various interventions like vaccination, sanitation, and behavioral changes. - Reducing incidence directly prevents suffering and limits the spread of the disease. - *Prevention of complications* - Disease control strategies often include interventions aimed at **preventing complications** in affected individuals, such as early diagnosis, effective treatment, and secondary prevention measures. - Minimizing complications helps improve patient outcomes, reduces the severity of illness, and lowers long-term healthcare costs.

Q: The relationship between birth rate and maternal hemoglobin is best studied by:

Correlation and regression.. ***Correlation and regression.*** - **Correlation** measures the strength and direction of a linear relationship between two quantitative variables (birth rate and maternal hemoglobin levels). - **Regression analysis** allows for modeling the relationship between variables, enabling prediction of birth rate based on maternal hemoglobin, or vice versa, and quantifying the effect of one on the other. *Sensitivity and specificity.* - These concepts are used to evaluate the performance of a **diagnostic test** or screening tool in correctly identifying individuals with and without a specific condition. - They are not appropriate for studying the relationship between two continuous variables like birth rate and maternal hemoglobin. *Standard error of difference between two means.* - This statistical measure is used to determine if there is a **statistically significant difference** between the means of two independent groups, typically when comparing a quantitative outcome between these groups. - It is not suitable for assessing the continuous relationship or association between two continuous variables. *Standard error of difference between two proportions.* - This measure is employed to assess whether there is a **statistically significant difference** between the proportions or percentages of an outcome in two different groups. - It is used for categorical data and is not applicable for analyzing the relationship between two continuous variables.

Q: Beta oxalyl amino alanine (BOAA) is found in:

Lathyrus sativus. ***Lathyrus sativus*** - **Lathyrus sativus**, also known as **grass pea**, is a legume that contains the neurotoxin **beta-oxalyl-amino-alanine (BOAA)**. - Consumption of **Lathyrus sativus** in large quantities over a prolonged period can lead to **lathyrism**, a neurological disorder causing paralysis. *Argemone mexicana* - **Argemone mexicana**, or **prickly poppy**, contains **sanguinarine** and **dihydrosanguinarine** alkaloids, which can cause **epidemic dropsy**. - Its oil is sometimes used as an adulterant in mustard oil, leading to symptoms like **edema** and **cardiac issues**. *Crotalaria medicaginea* - Species of **Crotalaria** (e.g., Crotalaria retusa, Crotalaria medicaginea) are known to contain **pyrrolizidine alkaloids**, which can be **hepatotoxic** and **pneumotoxic**. - Consumption can lead to **liver damage** and **pulmonary hypertension** in livestock and humans. *Aspergillus flavus* - **Aspergillus flavus** is a fungus that produces **aflatoxins**, potent **carcinogens** and **hepatotoxins**. - Aflatoxins are often found in contaminated food products like peanuts, corn, and tree nuts, causing **liver cancer** and **immunosuppression**.

Q: Due to which of the following does seasonal trend of a disease occur? 1. Vector variation 2. Environmental factors 3. Change in herd immunity Select the correct answer using the code given below:

1, 2 and 3. ***1, 2 and 3*** - **Vector variation** (e.g., mosquito populations increasing during warmer months) is a critical factor causing seasonal patterns in vector-borne diseases like malaria, dengue, and Japanese encephalitis. - **Environmental factors** such as temperature, humidity, and rainfall directly affect pathogen survival, vector breeding, transmission efficiency, and host susceptibility, leading to characteristic seasonal patterns (e.g., respiratory infections in winter, diarrheal diseases in summer). - **Changes in herd immunity** can contribute to temporal disease patterns, though this factor more commonly drives long-term cyclical patterns (multi-year cycles) rather than short-term seasonal variations. The accumulation of susceptible individuals (through births) and waning immunity can influence disease occurrence patterns over time. *2 and 3 only* - This option incorrectly excludes **vector variation**, which is a primary determinant of seasonality for many infectious diseases, particularly arthropod-borne infections. - Vector activity shows marked seasonal fluctuations that directly correlate with disease incidence. *1 and 3 only* - This option incorrectly excludes **environmental factors**, which are fundamental drivers of seasonal disease patterns. - Temperature, humidity, precipitation, and other climatic variables directly influence pathogen viability, vector ecology, and human behavioral patterns that affect disease transmission. *1 only* - This option is too restrictive, considering only **vector variation** while neglecting the significant contributions of **environmental factors** and **temporal changes in population immunity** to disease occurrence patterns. - Seasonal trends result from complex interactions among multiple factors.

Q: Excessive nitrates in drinking water can produce:

Methaemoglobinaemia. ***Methaemoglobinaemia*** - Nitrates are converted to **nitrites** in the gastrointestinal tract, especially in infants. Nitrites then oxidize the **ferrous iron (Fe2+)** in hemoglobin to **ferric iron (Fe3+)**, forming **methemoglobin**. - **Methemoglobin** cannot bind oxygen, leading to **cyanosis** and **tissue hypoxia**, often referred to as "blue baby syndrome" in infants. *Polycythemia vera* - This is a **myeloproliferative neoplasm** characterized by the overproduction of red blood cells, white blood cells, and platelets. - It is not caused by nitrate exposure but is rather a bone marrow disorder that can lead to symptoms like headaches, dizziness, and a ruddy complexion due to increased blood viscosity. *Hypochromic microcytic anemia* - This type of anemia is typically caused by **iron deficiency**, leading to smaller (microcytic) red blood cells with less hemoglobin (hypochromic). - It is not directly linked to excessive nitrate consumption; instead, nitrate toxicity primarily affects oxygen transport by converting hemoglobin to methemoglobin. *Hemophilia* - Hemophilia is a **genetic bleeding disorder** caused by a deficiency in specific blood clotting factors, most commonly Factor VIII or Factor IX. - It is an inherited condition and has no association with environmental factors such as nitrate levels in drinking water.

Q: The following statements are correct for healthful school environment except:

In the classroom, desks should be of minus type.. ***In the classroom, desks should be of minus type.*** - This statement is **incorrect** and is the exception. For a healthful school environment, desks should ideally be of the **'plus type'**, which means the desk overlaps the bench by at least 2 inches to allow for a comfortable and ergonomically sound seating posture, preventing slouching. - A 'minus type' desk, where the bench overlaps the desk, would lead to poor posture and discomfort, making it an unhealthful arrangement. *Combined window and door area should be 25% of the floor space.* - This statement is **correct** for optimal **ventilation and natural lighting** in a school environment. - Adequate window and door area (typically 20-25% of floor space) ensures proper air circulation and reduces reliance on artificial lighting, contributing to a healthier learning space. *Per capita space for each student should be 6 sq. feet.* - This statement represents an **acceptable minimum per capita space requirement** for students in a classroom according to traditional standards. - Providing sufficient space (minimum 6 sq ft, though 8-10 sq ft is preferred by modern guidelines) prevents overcrowding, allows for mobility, and ensures a comfortable learning environment. *One urinal should be provided for 60 students.* - This statement reflects an **accepted standard** for the **provision of sanitation facilities** in schools. - Adequate numbers of urinals and toilets (ratio of 1:50-60) are crucial for maintaining hygiene, preventing long queues, and ensuring accessibility for students.

Q: Which one of the following substances induces no dependence?

LSD. ***LSD*** - **LSD (lysergic acid diethylamide)** is a hallucinogen with the **lowest dependence potential** among the given options. - It does **not cause physical dependence** - there is no withdrawal syndrome when use is stopped. - **Psychological dependence** is extremely rare, as rapid tolerance develops (within days) and dissipates quickly, making continuous use unrewarding. - Users do **not experience compulsive drug-seeking behavior** or physical withdrawal symptoms characteristic of addictive substances. - In the context of this question, LSD is considered to have **negligible dependence potential** compared to other substances. *Barbiturates* - **Barbiturates** are CNS depressants with **high potential** for both physical and psychological dependence. - Chronic use leads to tolerance requiring higher doses, and **withdrawal can be life-threatening** (seizures, delirium tremens, cardiovascular collapse). - Classified as Schedule II-IV controlled substances due to high abuse potential. *Heroin* - **Heroin** (diacetylmorphine) is an opioid with **extremely high potential** for both physical and psychological dependence. - Rapid onset and intense euphoria create powerful reinforcement of drug-seeking behavior. - **Withdrawal syndrome** includes severe dysphoria, muscle aches, sweating, nausea, and intense cravings, driving continued use. *Cannabis* - **Cannabis** has **moderate dependence potential**, particularly with chronic high-potency use. - **Cannabis Use Disorder** is recognized in DSM-5, with about 9% of users developing dependence (30% for daily users). - **Withdrawal syndrome** includes irritability, anxiety, sleep disturbances, decreased appetite, restlessness, and cravings. - Physical dependence is less severe than opioids or sedatives but is clinically significant.

Question 1

Which one of the following is included in Indian Public Health Standards for a Primary Health Centre?

Accepted Answer

Safe abortion services

Answer

Surgery for hydrocele

Answer

Blood storage facility

Answer

Manual removal of placenta

Question 2

The pattern of disease in a community described in terms of the important factors which influence its occurrence is known as:

Accepted Answer

Community diagnosis

Answer

Experimental epidemiology

Answer

Confounding

Answer

Iceberg phenomenon

Question 3

The term “disease control” describes the ongoing operations aimed at reducing all of the following, except:

Accepted Answer

Virulence of the disease agent

Answer

The financial burden to the community

Answer

The incidence of disease

Answer

Prevention of complications

Question 4

The relationship between birth rate and maternal hemoglobin is best studied by:

Accepted Answer

Correlation and regression.

Answer

Sensitivity and specificity.

Answer

Standard error of difference between two means.

Answer

Standard error of difference between two proportions.

Question 5

Beta oxalyl amino alanine (BOAA) is found in:

Accepted Answer

Lathyrus sativus

Answer

Argemone mexicana

Answer

Crotalaria medicaginea

Answer

Aspergillus flavus

Question 6

Due to which of the following does seasonal trend of a disease occur?

1. Vector variation
2. Environmental factors
3. Change in herd immunity

Select the correct answer using the code given below:

Accepted Answer

1, 2 and 3

Answer

2 and 3 only

Answer

1 and 3 only

Answer

1 only

Question 7

Excessive nitrates in drinking water can produce:

Accepted Answer

Methaemoglobinaemia

Answer

Polycythemia vera

Answer

Hypochromic microcytic anemia

Answer

Hemophilia

Question 8

The following statements are correct for healthful school environment except:

Accepted Answer

In the classroom, desks should be of minus type.

Answer

Combined window and door area should be 25% of the floor space.

Answer

Per capita space for each student should be 6 sq. feet.

Answer

One urinal should be provided for 60 students.

Question 9

The following are the indicators for assessing the sensitivity of surveillance of polio except:

Accepted Answer

A minimum of one case of AFP per 100,000 children under 5 years of age detected per year

Answer

At least 80% of the reporting sites should report each month even in the absence of cases

Answer

A minimum of one case of AFP per 100,000 children under 15 years of age detected per year

Answer

Percentage of AFP cases with 2 stools taken within 2 weeks after paralysis onset

Question 10

Which one of the following substances induces no dependence?

Accepted Answer

LSD

Answer

Barbiturates

Answer

Heroin

Answer

Cannabis

UPSC-CMS 2014

Community Medicine

Psychiatry