Community Medicine
4 questionsWhat is the most common method of family planning sterilization practiced in India?
According to WHO guidelines, what prevalence of Bitot's spots indicates a public health problem?
Who made the statement 'The secret of national health lies in the homes of people'?
Secondary prevention is applicable to
NEET-PG 2012 - Community Medicine NEET-PG Practice Questions and MCQs
Question 481: What is the most common method of family planning sterilization practiced in India?
- A. Female sterilization (Correct Answer)
- B. Male sterilization
- C. Intrauterine device (IUD)
- D. Condom use
Explanation: ***Female sterilization*** - **Female sterilization** (tubal ligation) is the most prevalent method of permanent contraception in India, accounting for over **95% of all sterilization procedures**. - This is primarily due to historical policies focusing on female methods and various **socio-cultural factors** including gender norms and male reluctance. - According to **NFHS data**, female sterilization is the single most common contraceptive method overall in India. *Male sterilization* - **Male sterilization** (vasectomy) is significantly less common compared to female sterilization in India, accounting for less than 5% of sterilization procedures. - This disparity is attributed to **gender norms**, misconceptions about masculinity, and limited promotion of vasectomy services. *Condom use* - While condoms are a common **temporary contraceptive method**, the question specifically asks about **sterilization methods**, which are permanent. - Condoms are barrier methods, not sterilization procedures. *Intrauterine device (IUD)* - IUDs are **reversible long-acting contraceptive methods**, not sterilization procedures. - Though IUDs are increasingly popular in India, they do not constitute a sterilization method as they can be removed.
Question 482: According to WHO guidelines, what prevalence of Bitot's spots indicates a public health problem?
- A. > 1% prevalence
- B. > 2% prevalence
- C. None of the options
- D. ≥ 0.5% prevalence (Correct Answer)
Explanation: ***≥ 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**.
Question 483: Who made the statement 'The secret of national health lies in the homes of people'?
- A. Indira Gandhi
- B. Florence Nightingale
- C. Bhore (Correct Answer)
- D. Abraham Lincoln
Explanation: ***Bhore (Bhore Committee Report, 1946)*** - This famous statement emphasizes the importance of **community-level health** and the role of individuals and families in maintaining national health. - The **Bhore Committee**, chaired by Sir Joseph Bhore in colonial India (1943-1946), was a landmark Health Survey and Development Committee that laid the foundation for India's health policy. - The committee highlighted the need for **primary healthcare at the grassroots level**, accessibility of health services, and the integration of preventive and curative services. - This philosophy remains foundational to India's public health approach and community medicine. *Indira Gandhi* - While a prominent Prime Minister of India who contributed significantly to national development programs and social welfare initiatives, this specific statement is not attributed to her. - Her health-related contributions included the **National Health Policy** discussions and family planning programs, but this quote predates her political leadership. *Abraham Lincoln* - As the 16th U.S. President (1861-1865), his leadership focused on the Civil War and abolition of slavery. - His famous speeches include the Gettysburg Address with "**government of the people, by the people, for the people**" but do not address national health in this specific manner. *Florence Nightingale* - A pioneer of modern nursing and founder of professional nursing education, she emphasized **sanitation**, hygiene, and patient care. - While she revolutionized hospital conditions and public health nursing, particularly during the Crimean War (1853-1856), this exact quote is not attributed to her. - Her focus was on **evidence-based nursing practice** and improving hospital sanitation standards.
Question 484: Secondary prevention is applicable to
- A. Early stage of disease (Correct Answer)
- B. Factors leading to disease
- C. Advanced stage of disease
- D. None of the options
Explanation: ***Early stage of disease*** - **Secondary prevention** focuses on early detection and prompt treatment to halt the progression of an existing disease. - This stage is crucial for interventions like **screening tests** and **early diagnosis**, which aim to minimize the impact of the disease once it has begun. *Factors leading to disease* - This relates to **primary prevention**, which aims to prevent the disease from occurring in the first place by addressing risk factors or promoting health. - Examples include **vaccination** or promoting healthy lifestyle choices. *Advanced stage of disease* - This is the domain of **tertiary prevention**, which focuses on managing the disease, preventing complications, and improving quality of life once the disease is well-established. - Rehabilitation and long-term care are key aspects of this stage. *None of the options* - This option is incorrect because secondary prevention specifically targets the **early stage of disease** to prevent further progression and adverse outcomes.
Microbiology
4 questionsInfluenza virus culture is done on ?
Colorado Tick fever is caused by:
Which component is considered the central part of the complement pathway?
Which of the following organisms does not enter through abrasions in the skin?
NEET-PG 2012 - Microbiology NEET-PG Practice Questions and MCQs
Question 481: Influenza virus culture is done on ?
- A. Chorioallantoic membrane
- B. Allantoic cavity (Correct Answer)
- C. Yolk sac
- D. All of the options
Explanation: ***Allantoic cavity*** - The **allantoic cavity** of embryonated chicken eggs is the standard and most effective site for isolating and propagating **influenza viruses** for vaccine production and research. - This cavity provides an optimal environment for viral replication, particularly yielding high titers of **hemagglutinin**, a key influenza antigen. *Chorioallantoic membrane* - While embryonated eggs are used for virus culture, the **chorioallantoic membrane (CAM)** is primarily used for cultivating viruses that produce **pocks** (visible lesions), such as Vaccinia and Herpes Simplex Virus. - Influenza virus growth on the CAM is less efficient and typically doesn't produce distinct pocks, making it unsuitable for high-yield propagation compared to the allantoic cavity. *Yolk sac* - The **yolk sac** of embryonated eggs is ideal for growing viruses or bacteria that require a **lipid-rich environment** and replicate intracellularly, such as Chlamydia or Rickettsia. - It is not the preferred site for influenza virus isolation or proliferation due to suboptimal conditions for viral replication and lower viral yields. *All of the options* - While all these sites are components of an embryonated chicken egg, each serves as a host for different types of microorganisms or for specific purposes in virology. - For **influenza virus culture**, the **allantoic cavity** is the specifically utilized site for optimal growth and high viral yield.
Question 482: Colorado Tick fever is caused by:
- A. Coronaviridae
- B. Filoviridae
- C. Caliciviridae
- D. Reoviridae (Correct Answer)
Explanation: ***Reoviridae*** - Colorado Tick Fever (CTF) is caused by the **Colorado Tick Fever Virus (CTFV)**, which belongs to the genus **Coltivirus** within the family **Reoviridae**. - Reoviridae viruses are **non-enveloped**, double-stranded RNA viruses. *Filoviridae* - This family includes viruses like **Ebola virus** and **Marburg virus**, which cause severe hemorrhagic fevers. - They are **enveloped**, negative-sense single-stranded RNA viruses, distinct from the CTFV. *Coronaviridae* - This family includes viruses like **SARS-CoV-2 (COVID-19)** and SARS-CoV, which cause respiratory illnesses. - They are **enveloped**, positive-sense single-stranded RNA viruses, structurally different from CTFV. *Caliciviridae* - This family includes viruses like **Norovirus**, a common cause of acute gastroenteritis (viral stomach flu). - They are **non-enveloped**, positive-sense single-stranded RNA viruses and do not cause tick-borne illnesses.
Question 483: Which component is considered the central part of the complement pathway?
- A. C1 (complement component 1)
- B. C3 (complement component 3) (Correct Answer)
- C. C2 (complement component 2)
- D. C5 (complement component 5)
Explanation: ***C3*** - **C3** is considered the central component because all three major pathways of complement activation (classical, alternative, and lectin) converge at the point of **C3 activation**. - Its cleavage product, **C3b**, is crucial for opsonization, formation of the C5 convertase, and initiating the assembly of the **membrane attack complex (MAC)**. *C1 (complement component 1)* - **C1** is the initial component of the **classical complement pathway** but does not play a direct role in the alternative or lectin pathways. - Its primary function is to bind to **antibody-antigen complexes** or directly to pathogens to activate C4 and C2. *C2 (complement component 2)* - **C2** is a component of the **classical** and **lectin pathways**, acting as a substrate for C1s and MASP to form the C3 convertase. - It is not involved in the initial activation of the **alternative pathway**. *C5 (complement component 5)* - **C5** is activated downstream of C3 and is a key component in the formation of the **membrane attack complex (MAC)**. - While critical for pathogen lysis, its activation is dependent on the prior cleavage of **C3** into C3b.
Question 484: Which of the following organisms does not enter through abrasions in the skin?
- A. E rhusiopathiae
- B. E corrodens
- C. C hominis (Correct Answer)
- D. C violaceum
Explanation: ***Chryseobacterium hominis*** - **Chryseobacterium hominis** is primarily a cause of **nosocomial infections**, particularly in immunocompromised patients, and typically enters the body via **medical devices or respiratory route**, not skin abrasions. - It is known to colonize humid environments and medical equipment, leading to **bacteremia**, **meningitis**, or **pneumonia**. - This organism is transmitted through contaminated medical equipment, ventilators, or via the respiratory tract, distinguishing it from the other options. *Erysipelothrix rhusiopathiae* - This organism is a common cause of **erysipelas** or **erysipeloid** in humans, often contracted through contact with infected animals or animal products via **minor skin abrasions**. - The infection typically presents as a **painful, violaceous, spreading skin lesion** at the site of inoculation. - Common in fish handlers, butchers, and veterinarians who sustain occupational skin injuries. *Eikenella corrodens* - **Eikenella corrodens** is a gram-negative rod that is part of the normal oral flora and often causes infections following **human bites** or **fist fights** (clenched-fist injuries), where it enters through **skin abrasions or breaks**. - It is notorious for causing **osteomyelitis** and **abscesses** subsequent to these types of injuries. *Chromobacterium violaceum* - **Chromobacterium violaceum** is a rare but highly pathogenic bacterium found in soil and water in tropical and subtropical regions, entering the body through **breaks in the skin**, such as cuts or abrasions. - Infections are severe and can lead to **sepsis**, **multiple organ abscesses**, and a high mortality rate due to its production of **violacein** and other toxins.
Obstetrics and Gynecology
1 questionsIn which period is maternal mortality highest?
NEET-PG 2012 - Obstetrics and Gynecology NEET-PG Practice Questions and MCQs
Question 481: In which period is maternal mortality highest?
- A. Antepartum
- B. Peripartum (Correct Answer)
- C. Postpartum
- D. No period of maximum risk
Explanation: ***Peripartum*** - The peripartum period encompasses the time immediately before, during, and after childbirth, when the risks of **hemorrhage, infection, pre-eclampsia/eclampsia**, and other **acute obstetric complications** are highest. - The **physiological stresses** of labor and delivery, coupled with potential complications like **uterine atony** or **obstructed labor**, contribute significantly to maternal mortality during this critical window [2]. *Antepartum* - While complications like **severe pre-eclampsia, ectopic pregnancy**, and chronic conditions can occur during the antepartum period, the **acute risks of hemorrhage and infection** are generally lower than during and immediately after delivery [1]. - Most maternal deaths occurring antepartum are due to conditions that ultimately lead to or manifest more severely during the peripartum or postpartum phases, such as undetected pre-eclampsia worsening to eclampsia [3]. *Postpartum* - The postpartum period (especially the first 42 days) also carries significant risks such as **late postpartum hemorrhage, puerperal sepsis, and thromboembolism** [2]. - While substantial, the **magnitude of mortality risk** primarily due to acute events related to labor and delivery (e.g., massive hemorrhage, amniotic fluid embolism) is often concentrated in the peripartum period [2]. *No period of maximum risk* - This statement is incorrect because maternal mortality risk is demonstrably **higher during specific periods** related to pregnancy and childbirth, rather than being evenly distributed [1]. - The physiological changes and obstetric challenges associated with gestation, labor, and the puerperium create distinct periods of elevated risk for maternal morbidity and mortality.
Physiology
1 questionsWhat does colostrum have compared to normal milk?
NEET-PG 2012 - Physiology NEET-PG Practice Questions and MCQs
Question 481: What does colostrum have compared to normal milk?
- A. Increased proteins (Correct Answer)
- B. Decreased potassium
- C. Decreased sodium
- D. Decreased calories
Explanation: ***Increased proteins*** - **Colostrum** is rich in **immunoglobulins (antibodies)** like IgA, IgG, and IgM, which are proteins crucial for passive immunity in the newborn, making its protein content **2-3 times higher** than mature milk (approximately 2.3 g/100 mL vs 0.9 g/100 mL). - These high protein levels also include **lactoferrin** and **growth factors**, which support the development of the infant's gut and immune system. - This is the **most clinically significant** distinguishing feature of colostrum. *Decreased potassium* - **Potassium (K)** levels in colostrum are actually **similar to or slightly higher** than mature milk (approximately 74 mg/100 mL vs 51 mg/100 mL). - This option is incorrect as potassium is not decreased. *Decreased sodium* - **Sodium (Na)** levels are actually **significantly higher** in colostrum than in mature milk (approximately 48 mg/100 mL vs 15 mg/100 mL). - This elevated sodium gives colostrum a distinct salty taste, differentiating it from mature milk. - This option is incorrect as sodium is increased, not decreased. *Decreased calories* - While colostrum has a **lower fat content** than mature milk, leading to somewhat lower caloric density (54-58 kcal/100 mL vs 65-70 kcal/100 mL), this is not the primary distinguishing characteristic. - The most important feature of colostrum is its **high protein and immunoglobulin content** for immune protection, not its caloric value.