NEET MDS Shorts
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NEETMDS
Pellagra is a disease caused by a severe deficiency of niacin (vitamin B3). It is classically characterized by the "three Ds": dermatitis, diarrhea, and dementia. If left untreated, it can lead to death, the fourth "D". Dermatitis: A symmetrical skin rash often appears on areas exposed to sunlight. Diarrhea: Gastrointestinal issues are common. Dementia: Neurological symptoms can include confusion, disorientation, and memory loss.
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Physiology
The axons of sensory neurons from the dorsal root ganglion can follow three routes: forming spinal reflexes by synapsing with motor neurons, ascending to the brainstem for conscious perception, or relaying through the reticular formation and thalamus for general arousal.
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General PathologyMEN II is characterized by the triad of medullary carcinoma of the thyroid, pheochromocytoma, and oral and intestinal ganglioneuromatosis.
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EndodonticsRadiographically, it is virtually impossible to definitively distinguish a granuloma from a cyst. A granuloma consists of inflamed granulation tissue without an epithelial lining, whereas a cyst must have an epithelial-lined lumen. Histology remains the "gold standard" for diagnosis.
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General MedicineThe standard antibiotic for prophylaxis against infective endocarditis in adults undergoing high-risk dental procedures is a single dose of amoxicillin taken orally 30 to 60 minutes before the procedure. However, for patients allergic to penicillin, clindamycin is the recommended alternative. The appropriate oral dosage for clindamycin in adults is 600 mg administered 30 minutes to 1 hour before the procedure.
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ProsthodonticsThe primary stress-bearing area in maxillary complete denture is the edentulous ridges.
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State PSC PYQSyncope is typically caused by a temporary reduction in blood flow to the brain (cerebral ischemia). The immediate management involves positioning the patient to help blood flow back to the head. Placing the patient in a supine (lying flat on their back) position with their legs elevated uses gravity to increase venous return to the heart and thus blood flow to the brain. This is the crucial first step before considering other interventions like administering oxygen or calling emergency services.
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INI CET
The hypothalamus is the primary integration center for the autonomic nervous system, coordinating sympathetic and parasympathetic activities to maintain homeostasis.
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Conservative DentistryExplanation: The outline form of a Class V cavity preparation is primarily determined by the extent of carious tissue. The goal is to remove all carious dentin while preserving as much healthy tooth structure as possible. The outline form must encompass the entire area affected by caries to ensure that the restoration is effective and durable. Other factors, such as the height of the gingival crest, type of restorative material, and tooth anatomy, may influence the preparation but are secondary to the extent of caries.
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EndodonticsNight guard bleaching refers to a dentist-prescribed home-applied technique where the patient uses custom-fitted trays filled with carbamide peroxide gel, typically worn overnight. Key features: 1) Dentist provides custom trays and bleaching gel, 2) Patient applies treatment at home under professional supervision, 3) Uses lower concentrations (10-15% carbamide peroxide) for safety, 4) Extended contact time (6-8 hours) compensates for lower concentration, 5) Also called tray bleaching or home bleaching.