स्नातकोत्तर मेडिकल प्रवेश (MECEE-PG)
स्नातकोत्तर मेडिकल प्रवेश (MECEE-PG)
MECEE-PG – MD/MS/MDS Entrance · २,८६५ प्रश्न
२,८६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MD/MS प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Which of the following statements BEST describes the pathophysiology of acute appendicitis?
सही उत्तर: क) A. Bacterial overgrowth within the appendix wall leading to inflammation and edema.
Option A correctly describes the established understanding of acute appendicitis – bacterial proliferation initiating inflammation. Option B is misleading, as lymphatic obstruction isn’t the primary cause. Option C is a description of autoimmune processes and not typical appendicitis. Option D represents a hyperreactive immune response but doesn’t accurately reflect the initial trigger.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary causative organism responsible for the development of Echinococcal (hydatid) cysts within the liver, commonly presenting as unilocular lesions, is: (a) *Staphylococcus aureus* (b) *Echinococcus granulosus* (c) *Klebsiella pneumoniae* (d) *Escherichia coli*
सही उत्तर: ख) (b) *Echinococcus granulosus*
The answer is (b) because *Echinococcus granulosus* is the well-established parasite responsible for causing Echinococcal hydatid cysts. The other options are common bacterial pathogens, not related to this specific cyst formation. (*Staphylococcus aureus* and *Escherichia coli* are frequently involved in secondary infections but aren’t the primary cause of the cyst itself.)
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A patient presents with a fever, headache, and stiff neck. CSF analysis reveals numerous neutrophils and ring-enhancing lesions on MRI. Which of the following pathogens is MOST likely responsible?
सही उत्तर: ख) B. Herpes Simplex Virus (HSV)
Option B is correct; the clinical presentation (meningitis with CSF findings) and imaging suggest HSV encephalitis, a common cause of viral meningitis. The other options represent different bacterial or fungal infections that do not typically present in this manner.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The ‘window period’ for Hepatitis B virus (HBV) testing refers to:
सही उत्तर: ग) C. The time during which HBV DNA may be undetectable but the virus is still transmissible
Option C is correct; the ‘window period’ is the timeframe after initial infection where viral load is low enough to be missed by standard tests, yet the individual remains infectious. Options A, B and D describe related concepts but are not the definition of the window period.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A patient is diagnosed with Pneumocystis jirovecii pneumonia (PCP). Which of the following laboratory findings would MOST strongly support this diagnosis?
सही उत्तर: ख) B. Presence of hyphae seen on bronchoalveolar lavage fluid microscopy
Option B is correct because the hallmark microscopic finding in PCP is the presence of *Pneumocystis jirovecii* cysts and pseudocysts, which are typically seen on bronchoalveolar lavage fluid microscopy. The other options represent findings associated with different infections or conditions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In Gram staining, what is the primary function of crystal violet in Gram-negative bacteria?
सही उत्तर: ख) B. To stain the peptidoglycan layer purple
Option B is correct because crystal violet is a primary dye that stains the entire Gram-negative cell, including the peptidoglycan layer, initially making it purple. Options A, C and D represent incorrect actions or targets of the staining process.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A patient presents with significant bruising and a family history of blood clots. Laboratory tests reveal elevated levels of Factor V Leiden. Which genetic abnormality is MOST likely responsible for this patient’s hypercoagulability?
सही उत्तर: ख) B. Elevated Factor V Leiden gene mutation
Option B is correct because Factor V Leiden is a common genetic mutation that significantly increases the risk of blood clot formation (thrombophilia). The other options present alternative causes of hypercoagulability which are less specifically linked to genetic factors and family history.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the role of the renin-angiotensin-aldosterone system (RAAS) in regulating blood pressure?
सही उत्तर: ग) It controls sodium and water balance, leading to increased blood volume and pressure.
The RAAS is a hormonal system that regulates blood volume and pressure primarily through the production of angiotensin II, which causes vasoconstriction and promotes aldosterone release (which increases sodium reabsorption).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary function of the myelin sheath surrounding nerve fibers is to:
सही उत्तर: क) Increase the rate of nerve impulse conduction.
Myelin sheaths insulate nerve axons, significantly increasing the speed of action potential propagation due to saltatory conduction. The other options represent incorrect functions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following hormones plays a crucial role in maintaining calcium homeostasis?
सही उत्तर: ग) Parathyroid Hormone (PTH)
Parathyroid hormone (PTH) is primarily responsible for increasing blood calcium levels. Insulin, glucagon, and cortisol have roles in glucose regulation and stress responses, respectively, but not direct calcium homeostasis.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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