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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A patient presents with symptoms suggestive of intestinal obstruction. Examination reveals a fistula-in-ano with an external opening anterior to the transverse colon. According to Goodsall’s rule, this finding most strongly suggests: (a) A sigmoid diverticulitis (b) An inflammatory bowel disease (IBD) such as Crohn’s disease (c) A rectosigmoid fistula (d) An anal tumor
सही उत्तर: घ) (d) An anal tumor
Goodsall's rule states that a fistula-in-ano with an external opening anterior to the transverse colon suggests a rectosigmoid fistula, which is a connection between the rectum and sigmoid colon. Other options are less strongly associated with this specific anatomical location.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the setting of suspected acute calculous cholecystitis, which of the following best describes the most common site of ureteric stone impaction? (a) The distal ureter (b) The proximal ureter (c) The renal pelvis (d) The iliac vessels
सही उत्तर: ख) (b) The proximal ureter
The most common site for ureteric stone impaction in acute calculous cholecystitis is the distal ureter, often due to anatomical variations and inflammation. Impaction in other areas is less frequent.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The characteristic histological feature that strongly supports a diagnosis of squamous cell carcinoma arising from a chronic burn scar is: (a) Presence of thyroid follicular cells (b) Formation of granulomas (c) Epithelial differentiation with keratinization (d) Lymphoid infiltration
सही उत्तर: घ) (d) Lymphoid infiltration
Squamous cell carcinoma arising from burn scars often demonstrates epithelial differentiation, exhibiting features like keratinization and a scaly appearance under microscopic examination. Granulomas are more typical of chronic inflammatory conditions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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According to current diagnostic criteria, a palpable gallbladder in a patient presenting with painless jaundice strongly suggests: (a) Acute Cholecystitis (b) Cholangiocarcinoma (c) Common Bile Duct Stones (d) Gallbladder Polyps
सही उत्तर: घ) (d) Gallbladder Polyps
Courvoisier's law – a palpable gallbladder in the presence of painless jaundice – is associated with common bile duct obstruction, most frequently by stones. Acute cholecystitis would typically present with significant right upper quadrant pain. Cholangiocarcinoma and gall bladder polyps are less likely to cause this presentation without other symptoms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The most common initial imaging modality employed for suspected acute cholecystitis, based on established guidelines, is: (a) Magnetic Resonance Imaging (MRI) (b) Computed Tomography Scan (CT Scan) (c) Ultrasound (d) Positron Emission Tomography (PET) scan
सही उत्तर: ग) (c) Ultrasound
Ultrasound is the gold standard initial imaging for acute cholecystitis due to its ability to visualize gallstones and gallbladder wall thickening. CT scans are useful but expose patients to radiation, while MRI and PET scans are not routinely used as first-line investigations in this setting.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following statements regarding congenital adrenal hyperplasia (CAH) is MOST accurate? a) CAH is primarily caused by deficiencies in vitamin D levels. b) CAH results from an excess of adrenocorticotropic hormone (ACTH). c) CAH typically presents with ambiguous genitalia and hypernatremia in males. d) CAH can be diagnosed solely based on maternal dietary intake during pregnancy.
सही उत्तर: ग) c) CAH typically presents with ambiguous genitalia and hypernatremia in males.
CAH is caused by excessive cortisol production, which leads to adrenal hyperplasia. This excess cortisol results in an excess of ACTH stimulation, causing the symptoms. The other options describe incorrect causes or diagnostic approaches.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which enzyme is MOST directly involved in converting glucose to lactate during anaerobic glycolysis?
सही उत्तर: ख) b) Lactate dehydrogenase
Lactate dehydrogenase catalyzes the final step of anaerobic glycolysis, producing both pyruvate and lactate. The other enzymes play roles in earlier stages of glucose metabolism.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The glomerular filtration rate (GFR) accurately reflects which of the following?
सही उत्तर: ख) b) The volume of fluid filtered at the glomerulus per unit time
GFR directly measures the rate at which fluid is filtered from the blood at the glomerulus, reflecting its function. Options A, C, and D describe other processes within the nephron.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which hormone primarily regulates glucose levels in the body by stimulating insulin production?
सही उत्तर: ख) b) Insulin
Insulin is produced in response to elevated blood glucose levels and plays a key role in lowering them. Cortisol, glucagon and epinephrine have opposing effects on glucose metabolism.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Bohr effect describes a shift in hemoglobin's affinity for oxygen. What factors primarily influence this shift?
सही उत्तर: ख) b) Decreased pH and increased temperature
The Bohr effect demonstrates that a decrease in pH (increased acidity, i.e., lower pCO2) decreases hemoglobin's affinity for oxygen, facilitating its release. Option A is incorrect as it reverses the influence of temperature; option C is false, and option D contradicts the observed effects.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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