ENT
1 questions65-year-old person with hearing loss with normal speech discrimination is suffering from?
NEET-PG 2012 - ENT NEET-PG Practice Questions and MCQs
Question 791: 65-year-old person with hearing loss with normal speech discrimination is suffering from?
- A. Noise induced hearing loss
- B. Presbycusis (Correct Answer)
- C. Ototoxic drug
- D. NOHL
Explanation: ***Presbycusis*** - **Presbycusis**, or age-related hearing loss, is characterized by a gradual, symmetrical, **sensorineural hearing loss** primarily affecting high frequencies. - Importantly, **speech discrimination** is typically preserved in the early and moderate stages of presbycusis, which aligns with the normal speech discrimination in a 65-year-old. *Noise induced hearing loss* - **Noise-induced hearing loss** is caused by exposure to loud noise and often presents with a characteristic **4 kHz notch** in the audiogram. - While it can cause sensorineural hearing loss, it's not exclusively defined by the age-related onset and might involve more significant **speech discrimination difficulties** depending on the severity and frequency range affected. *Ototoxic drug* - Hearing loss due to **ototoxic drugs** (e.g., aminoglycosides, cisplatin) typically manifests as a **bilateral, high-frequency sensorineural hearing loss** that can progress rapidly. - The history of **drug exposure** would be a key differentiating factor, and while speech discrimination can be affected, the lack of other specific details makes this less likely without further information. *NOHL* - **NOHL** is not a standard, recognized medical acronym for a specific type of hearing loss. - This option is likely a distractor and does not represent a known diagnosis fitting the described clinical picture.
Forensic Medicine
3 questionsWhich of the following conditions is MOST likely to cause postmortem caloricity?
Color of postmortem lividity in hypothermic deaths: NEET 2012
What is the estimated time for a dead body to float in water under typical summer conditions in India, considering various influencing factors?
NEET-PG 2012 - Forensic Medicine NEET-PG Practice Questions and MCQs
Question 791: Which of the following conditions is MOST likely to cause postmortem caloricity?
- A. Burns
- B. Septicemia (Correct Answer)
- C. Tetanus
- D. Sunstroke
Explanation: ***Septicemia*** - Septicemia is the **MOST common cause** of postmortem caloricity in forensic medicine - **Bacterial multiplication** continues after death, producing exothermic reactions that generate heat - **Bacterial toxins and metabolic processes** cause ongoing heat production postmortem - Body temperature may rise **1-2°C above normal** even hours after death - Well-documented in standard forensic texts as the classic cause of postmortem caloricity *Tetanus* - Tetanus can cause postmortem caloricity due to **intense muscle spasms and rigidity** - Muscle contractions generate heat that may persist briefly after death - However, once muscle activity ceases postmortem, heat generation stops - Less pronounced than septicemia where bacterial processes continue *Sunstroke* - Sunstroke causes **ante-mortem hyperthermia** (high temperature before death) - The elevated temperature may **delay cooling** but does not typically rise further postmortem - No ongoing metabolic processes to generate additional heat after death - Different from true postmortem caloricity where temperature increases after death *Burns* - Burns cause **tissue destruction** and elevated body temperature at the time of death - Do **NOT cause postmortem caloricity** in the forensic sense - No ongoing metabolic or bacterial processes in burned tissue to generate heat postmortem - The body follows normal cooling patterns after death
Question 792: Color of postmortem lividity in hypothermic deaths: NEET 2012
- A. Purple
- B. Deep red
- C. Cherry red
- D. Bright pink (Correct Answer)
Explanation: ***Bright pink*** - In **hypothermic deaths**, postmortem lividity characteristically appears **bright pink** due to **increased oxygen affinity of hemoglobin at lower temperatures**. - At cold temperatures, hemoglobin retains oxygen more tightly, resulting in well-oxygenated blood that produces a pinkish hue in dependent areas. - This is considered a **characteristic finding** in deaths due to cold exposure and hypothermia. *Purple* - **Purple lividity** is the **typical/classical color** seen in most deaths due to pooling of deoxygenated blood (reduced hemoglobin). - While this is the general appearance of livor mortis, it is **not specific** to hypothermic deaths. - Purple represents the baseline color, whereas bright pink is the distinguishing feature in hypothermia. *Deep red* - Deep red lividity may occur with well-oxygenated blood but is not specifically characteristic of hypothermia. - This color variation depends on general oxygenation status rather than cold-specific mechanisms. *Cherry red* - **Cherry red livor mortis** is a classic sign of **carbon monoxide poisoning** or **cyanide poisoning**. - Carboxyhemoglobin (in CO poisoning) produces a characteristic bright cherry red color. - This is unrelated to hypothermic deaths.
Question 793: What is the estimated time for a dead body to float in water under typical summer conditions in India, considering various influencing factors?
- A. 8 hours
- B. 16 hours
- C. 24 hours (Correct Answer)
- D. 36 hours
Explanation: ***Correct Answer: 24 hours*** - Under typical summer conditions in India, decomposition is **accelerated due to higher water temperatures** (25-35°C), leading to faster gas formation - The accumulation of **putrefactive gases** (hydrogen sulfide, methane, carbon dioxide) in body cavities reduces the body's specific gravity, causing it to float - This process typically occurs within **24 hours in warm water**, which is the most commonly observed timeframe in Indian summer conditions - This is a classical teaching point in forensic medicine regarding postmortem changes in water *Incorrect: 8 hours* - **Too short** for sufficient gas accumulation to cause consistent flotation of an adult body - While lighter bodies or those in very warm, shallow water might float earlier, 8 hours is uncommon for typical cases - Initial stages of putrefaction are just beginning at this timeframe *Incorrect: 16 hours* - While plausible in some cases with optimal conditions, **not the most consistent timeframe** for flotation - Gas production is still ongoing but typically insufficient for stable flotation in most adult bodies - Falls short of the classical 24-hour teaching in forensic pathology *Incorrect: 36 hours* - Bodies will certainly be floating by this time, but this represents a **later stage beyond initial flotation** - The critical gas accumulation for flotation usually occurs **within the first 24 hours** in warm water - This timeframe is beyond what is typically considered the initial appearance of flotation
Internal Medicine
5 questionsWhat is a characteristic finding in athletes' hearts, also known as athletic syndrome?
Which biomarker is typically elevated in the plasma of patients with chronic heart disease?
A person experiences asthma attacks more than twice during the day and at least once during the night. What is the most likely classification of their asthma?
Which of the following is a renal-specific nephropathy associated with HIV?
Which of the following is a characteristic of Wilson's disease?
NEET-PG 2012 - Internal Medicine NEET-PG Practice Questions and MCQs
Question 791: What is a characteristic finding in athletes' hearts, also known as athletic syndrome?
- A. Increased amplitude of QRS (Correct Answer)
- B. Decreased QT interval
- C. U-waves
- D. Bradycardia
Explanation: ***Increased amplitude of QRS*** - In **athletes' hearts**, the heart muscle (myocardium) undergoes physiological adaptations, including **left ventricular hypertrophy**, which leads to an **increased amplitude of the QRS complex** on an ECG. - This is a normal and beneficial adaptation that enhances cardiac output and efficiency during exercise. *Bradycardia* - While **bradycardia** (a slower heart rate) is very common in athletes due to increased **vagal tone** and improved cardiac efficiency, it is not the most direct characteristic finding *on an ECG* reflecting the structural changes of athletic heart syndrome. - Bradycardia is a rate finding, not a waveform amplitude change reflecting myocardial mass. *Decreased QT interval* - A **decreased QT interval** is not a typical characteristic of an athlete's heart; in fact, there is usually no significant change or a slight prolongation due to bradycardia, but it remains within normal limits. - A pathologically short QT interval can indicate specific genetic channelopathies, which are unrelated to athletic adaptation. *U-waves* - **U-waves** are small positive deflections sometimes seen after the T wave, often associated with **bradycardia** or **hypokalemia**. - While athletes can have bradycardia, U-waves are not a consistent or defining feature of an athlete's heart syndrome itself, and their presence can also indicate other conditions.
Question 792: Which biomarker is typically elevated in the plasma of patients with chronic heart disease?
- A. Endothelin-1
- B. Troponin T
- C. B-type natriuretic peptide (BNP) (Correct Answer)
- D. Cortisol
Explanation: ***B-type natriuretic peptide (BNP)*** - **BNP** is a hormone secreted by **ventricular cardiomyocytes** in response to increased wall stretch and pressure overload, making it a strong indicator of **myocardial stress** and **chronic heart failure** [1]. - Elevated levels correlate with the **severity of heart failure**, aiding in diagnosis and prognosis [1]. *Endothelin-1* - **Endothelin-1** is a potent **vasoconstrictor** involved in vascular tone regulation and endothelial dysfunction. - While it can be elevated in conditions like **pulmonary hypertension** and **atherosclerosis**, it is not a primary diagnostic biomarker for chronic heart disease in general. *Troponin T* - **Troponin T** is a cardiac-specific protein that is released into the bloodstream following **myocardial injury or necrosis**. - While it is a crucial biomarker for **acute coronary syndromes** (e.g., heart attack), persistently elevated levels are not typical for stable chronic heart disease unless there is ongoing subclinical myocardial damage. *Cortisol* - **Cortisol** is a **stress hormone** produced by the adrenal glands, involved in metabolism, immune response, and blood pressure regulation. - While chronic stress can impact cardiovascular health, cortisol itself is not a specific diagnostic biomarker for chronic heart disease.
Question 793: A person experiences asthma attacks more than twice during the day and at least once during the night. What is the most likely classification of their asthma?
- A. Intermittent asthma
- B. Mild persistent asthma
- C. Moderate persistent asthma
- D. Severe persistent asthma (Correct Answer)
Explanation: ***Severe persistent asthma*** - This classification is characterized by **frequent symptoms**, specifically asthma attacks occurring more than twice daily and at least once nightly. - Individuals with severe persistent asthma often experience significant limitations in their daily activities and may have a **FEV1 (forced expiratory volume in 1 second)** less than 60% of predicted. *Intermittent asthma* - This classification is characterized by symptoms occurring less than two days per week and **nighttime awakenings less than two times per month**. - Symptoms are generally well-controlled with a short-acting beta-agonist (SABA) as needed. *Mild persistent asthma* - Patients with mild persistent asthma typically experience symptoms more than twice a week but **less than once a day**, and **nighttime awakenings 3-4 times per month**. - Their lung function (FEV1) is usually 80% or more of predicted. *Moderate persistent asthma* - This category involves daily symptoms and **nighttime awakenings more than once per week but not nightly**. - Lung function (FEV1) in moderate persistent asthma typically falls between 60% and 80% of predicted.
Question 794: Which of the following is a renal-specific nephropathy associated with HIV?
- A. Focal Segmental Glomerulosclerosis (FSGS) (Correct Answer)
- B. Mesangioproliferative Glomerulonephritis
- C. Membranous Nephropathy
- D. Membranoproliferative Glomerulonephritis (MPGN)
Explanation: ### Focal Segmental Glomerulosclerosis - It is a common renal complication associated with **HIV infection**, characterized by **podocyte injury** and segmental sclerosis [1]. - Often results in **nephrotic syndrome**, presenting with significant **proteinuria** and edema, making it distinct in HIV renal pathology [1]. ### Membranous Glomerulonephritis - Typically presents with **subepithelial immune complex deposits**, leading to a different pathophysiological mechanism. - More commonly associated with other secondary causes, such as **drugs** or **infection**, rather than being specific to HIV. ### Mesangioproliferative Glomerulonephritis - Characterized by **mesangial cell proliferation and immune complex deposition**, often linked with various infections but not specifically with HIV. - Usually shows **hematuria** and mild proteinuria, lacking the severe nephrotic syndrome seen in focal segmental glomerulosclerosis. ### Membranoproliferative Glomerulonephritis - Features **proliferation of mesangial and endothelial cells**, leading to a distinctive pattern on renal biopsy, not specific to HIV. - Typically presents in other contexts such as **chronic infections** or **autoimmune diseases**, rather than predominantly with HIV.
Question 795: Which of the following is a characteristic of Wilson's disease?
- A. Increased copper in liver (Correct Answer)
- B. Autosomal dominant
- C. Increased serum ceruloplasmin
- D. Decreased copper excretion in urine
Explanation: ***Increased copper in liver*** - Wilson's disease is characterized by **accumulation of copper** in liver tissues due to defective copper transport [1]. - This excess leads to **hepatocellular damage**, resulting in liver dysfunction and potential cirrhosis [1]. *Decreased copper excretion in urine* - In Wilson's disease, there is actually **decreased excretion of copper**, which results in accumulation in the liver [1]. - **Urine copper levels** are typically low to normal in early stages because the liver fails to excrete excess copper effectively. *Autosomal dominant* - Wilson's disease is inherited in an **autosomal recessive** pattern, not dominant. - It is caused by mutations in the gene responsible for copper transport (ATP7B) [1]. *Increased serum ceruloplasmin* - Serum ceruloplasmin levels are often **decreased** in Wilson's disease due to impaired copper incorporation into this protein [1]. - Low ceruloplasmin is a key laboratory finding, contrasting the assertion of this option.
Obstetrics and Gynecology
1 questionsWhat is the best method to diagnose an unruptured ectopic pregnancy?
NEET-PG 2012 - Obstetrics and Gynecology NEET-PG Practice Questions and MCQs
Question 791: What is the best method to diagnose an unruptured ectopic pregnancy?
- A. Endoscopy
- B. UPT
- C. USG (Correct Answer)
- D. Culdocentesis
Explanation: ***Correct Answer: USG*** - **Transvaginal ultrasound (TVS)** is the most common and effective method for diagnosing an unruptured ectopic pregnancy. It allows for visualization of a gestational sac outside the uterus or an adnexal mass. - In conjunction with **serum beta-hCG levels**, TVS helps to differentiate between an intrauterine pregnancy and an ectopic pregnancy, especially when hCG levels are above the discriminatory zone (typically 1500-2000 mIU/mL). - TVS has high sensitivity and specificity for detecting ectopic pregnancy and is **non-invasive**. *Incorrect: Endoscopy* - **Endoscopy** (such as laparoscopy) is a surgical procedure, primarily used for direct visualization and treatment of ectopic pregnancies, not for initial diagnosis. - It is *too invasive* for routine diagnostic purposes in an unruptured ectopic pregnancy. *Incorrect: UPT* - A **urine pregnancy test (UPT)** confirms pregnancy but *cannot determine the location* of the pregnancy. - A positive UPT only indicates the presence of **hCG**, which is elevated in both intrauterine and ectopic pregnancies. *Incorrect: Culdocentesis* - **Culdocentesis** involves aspirating fluid from the cul-de-sac and is used to detect the presence of *free blood* in the peritoneal cavity, indicating a **ruptured** ectopic pregnancy. - It is not useful for diagnosing an **unruptured ectopic pregnancy** and is largely replaced by ultrasound in modern practice.