NEETPG, INICET, FMGE PYT

🚨 NEET PG 2026 DOCUMENT CLARIFICATION 🩺 A few important clarifications regarding the documents to carry on exam day: ✅ 1. ADMIT CARD ▪️ If your admit card consists of 2 pages, print BOTH pages in COLOUR on ONE A4 white sheet, BACK-TO-BACK. ▪️ Page 1 → Front side ▪️ Page 2 → Back side ▪️ Do not print only one page. 📌 2. REGISTRATION CERTIFICATE ▪️ Carry a COLOUR photocopy of your valid Permanent/Provisional SMC/MCI/NMC Registration Certificate. ▪️ If you initially registered with a Provisional Registration Certificate but have now received your Permanent Registration, carry the current Permanent Registration Certificate photocopy. ▪️ You can also keep the old provisional certificate as a backup. 🪪 3. ORIGINAL PHOTO ID ▪️ Carry ONE original, valid Government-issued photo ID (Aadhaar/PAN/Driving Licence/Passport/Voter ID, as applicable). ▪️ Photocopy or phone screenshot will not substitute for the original ID. ⚠️ IMPORTANT: Always follow the instructions mentioned on YOUR individual NEET-PG 2026 admit card if they differ 📌 FINAL CHECK BEFORE LEAVING: ☑️ Colour Admit Card – 2 pages, back-to-back on ONE A4 sheet ☑️ Original valid Government Photo ID ☑️ Colour photocopy of valid SMC/MCI/NMC Registration ☑️ Check your exam centre, reporting time & date carefully 🔥 1 DAYS TO GO Keep everything ready tonight Don’t leave anything for the last moment! All the best future specialists! 🩺❤️‍🔥 *Follow for more NEET PG pyqs* https://whatsapp.com/channel/0029Va6AT0Y2v1IqAGrRiU2W

Today is a Holiday For Questions.(1ST REVISION) Tomorrow onwards Pure PYT BASED QUESTIONS

16. D — Methoxyflurane Methoxyflurane undergoes extensive hepatic metabolism to yield free inorganic fluoride ions, which cause dose-dependent nephrotoxicity (fluoride-induced high-output renal failure). 17. A — Succinylcholine In major burns (>24-48 hours old), denervation causes up-regulation of extrajunctional acetylcholine receptors; succinylcholine administration can trigger massive, fatal extracellular potassium efflux and cardiac arrest. 18. C — Mannitol Mannitol (0.25–1 g/kg IV) is an osmotic diuretic that draws fluid from the brain parenchyma into the intravascular compartment, rapidly reducing cerebral edema and intracranial pressure. 19. D — 6 APGAR components: Heart rate >100 (2), Respiratory effort slow/irregular (1), Muscle tone some flexion (1), Reflex grimace (1), Color pink body/blue extremities (1) = Total 6. 20. A — Dissociative anesthesia with respiratory preservation and bronchodilation Ketamine acts primarily as an NMDA receptor antagonist, producing dissociative anesthesia while maintaining airway reflexes, preserving respiratory drive, and causing bronchodilation and sympathetic stimulation. 21. B — Transient adrenocortical suppression via 11-beta-hydroxylase inhibition Etomidate causes hemodynamic stability during induction but uniquely inhibits 11-beta-hydroxylase, leading to transient adrenocortical suppression even after a single dose. 22. C — Desflurane Desflurane has the lowest blood-gas partition coefficient (~0.42) among volatile anesthetics, allowing extremely rapid induction and recovery (wash-in and wash-out). 23. D — Propofol Infusion Syndrome Propofol Infusion Syndrome (PRIS) is a rare, severe complication of prolonged high-dose propofol infusions, characterized by metabolic acidosis, rhabdomyolysis, hyperkalemia, renal failure, hepatomegaly, and cardiac failure. 24. A — Local Anesthetic Systemic Toxicity (LAST) involving CNS and CVS Premature deflation of the tourniquet during Bier's block allows rapid systemic washout of local anesthetic into the venous circulation, leading to severe LAST (seizures, arrhythmias, collapse). 25. C — Grade 3 In Cormack-Lehane laryngoscopy grading, Grade 1 visualizes the full glottis, Grade 2 visualizes posterior glottis/arytenoids, Grade 3 visualizes only the epiglottis, and Grade 4 visualizes neither epiglottis nor glottis. 26. B — Naloxone Naloxone is a pure, competitive opioid receptor antagonist used to reverse opioid-induced respiratory depression and CNS sedation rapidly. 27. D — Bilateral recurrent laryngeal nerve Bilateral recurrent laryngeal nerve injury causes paralysis of intrinsic laryngeal muscles, leaving vocal cords adducted in the median/paramedian position, resulting in immediate post-extubation airway obstruction and stridor. 28. C — Increased venous return and increased intracranial pressure Steep Trendelenburg positioning increases venous return to the heart and raises central venous, intrathoracic, intraocular, and intracranial pressures due to gravity-dependent venous congestion. 29. A — Supraclavicular approach The supraclavicular block approaches the brachial plexus trunks at the level of the first rib, directly adjacent to the cervical dome of the pleura, carrying the highest risk of accidental pleural puncture and pneumothorax (~1–6%). 30. B — Allen's test Allen's test (or modified Allen's test) evaluates the adequacy of palmar collateral arterial circulation from the ulnar artery before cannulation or ligation of the radial artery.

1. B — Intravenous dantrolene sodium Dantrolene sodium is the specific life-saving antidote for malignant hyperthermia (triggered by succinylcholine/volatile anesthetics), as it inhibits calcium release from the ryanodine receptor (RYR1) in the sarcoplasmic reticulum. 2. A — Aspirate catheter, abandon the epidural, and administer lipid emulsion Systemic toxicity symptoms (tinnitus, metallic taste) and intravascular epinephrine response indicate accidental intravascular placement of the epidural catheter; prompt cessation and lipid emulsion therapy (Intralipid) are required for LAST. 3. C — Lignocaine Topical lignocaine (2–4% nebulization or spray) is the standard agent used to anesthetize the mucosal surfaces of the airway (glossopharyngeal and vagus nerve supply) above and at the vocal cords for awake fiberoptic intubation. 4. C — Pre-oxygenation, induction agent + rapid neuromuscular blocker, cricoid pressure, intubation without mask ventilation Classic RSI consists of 3–5 minutes of 100% pre-oxygenation, simultaneous administration of induction agent and neuromuscular blocker (succinylcholine/rocuronium), application of cricoid pressure (Sellick's maneuver), and immediate intubation without positive pressure mask ventilation to prevent aspiration. 5. C — Durant's position (Left lateral decubitus with Trendelenburg) Venous air embolism (a known complication of sitting position neurosurgery) is managed by placing the patient in Durant's position (left lateral Trendelenburg) to trap air in the right ventricular apex away from the pulmonary outflow tract. 6. A — Ondansetron and Dexamethasone Combination therapy using a 5-HT3 receptor antagonist (ondansetron) and dexamethasone at induction is the gold-standard dual-drug regimen for high-risk PONV prophylaxis. 7. D — Cisatracurium Cisatracurium undergoes Hofmann elimination (spontaneous temperature- and pH-dependent degradation in plasma), making it completely organ-independent and the safest choice in renal or hepatic failure. 8. B — Application of 100% oxygen with positive pressure ventilation and jaw thrust Initial management of post-extubation laryngospasm involves removal of irritants, 100% oxygen with continuous positive airway pressure (CPAP), and jaw thrust; succinylcholine is reserved for refractory cases. 9. C — 40–60 A Bispectral Index (BIS) value between 40 and 60 reflects adequate depth of general anesthesia, minimizing the risk of intraoperative awareness while avoiding excessive depth. 10. D — Line connecting the highest points of the iliac crests Tuffier's line (intercristal line) joins the highest points of the iliac crests and crosses the spine at the L3-L4 interspace, serving as the anatomical guide for lumbar puncture/spinal anesthesia. 11. A — Blockade of cardioaccelerator sympathetic fibers (T1–T4) High spinal anesthesia extending to T1–T4 blocks the sympathetic cardioaccelerator fibers originating from these thoracic levels, leading to unopposed vagal tone, severe bradycardia, and hypotension. 12. B — Epidural blood patch An epidural blood patch (injecting autologous blood into the epidural space) is the definitive gold-standard treatment for persistent Post-Dural Puncture Headache (PDPH) when conservative management fails. 13. D — Bronchospasm or airway obstruction A prolonged, sloped phase III alveolar plateau ("shark-fin" capnogram) indicates delayed exhalation and expiratory airflow obstruction, classic for bronchospasm or COPD exacerbation. 14. C — Pin Index 3,5; Blue body In international/Indian standard color coding, Nitrous Oxide cylinders are painted blue throughout, and the safety Pin Index System configuration for N2O is 3,5. 15. B — To counteract muscarinic side effects of neostigmine such as bradycardia and secretions Neostigmine is an acetylcholinesterase inhibitor that increases acetylcholine at both nicotinic and muscarinic receptors; an anticholinergic (glycopyrrolate/atropine) is co-administered to block severe muscarinic effects like bradycardia and bronchorrhea.

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26. A 19-year-old patient is receiving IV opioids for postoperative pain management following major orthopedic surgery. The patient becomes unarousable with a respiratory rate of 5 breaths/min and pinpoint pupils. Which specific opioid antagonist should be administered immediately? A. Flumazenil B. Naloxone C. Neostigmine D. Sugammadex 27. A 38-year-old female undergoes thyroidectomy. Intraoperatively, nerve monitoring is used. During extubation, she develops severe inspiratory stridor and acute upper airway obstruction. Bilateral vocal cords are found in the median position on emergency laryngoscopy. Injury to which nerve has occurred? A. External branch of superior laryngeal nerve B. Internal branch of superior laryngeal nerve C. Glossopharyngeal nerve D. Bilateral recurrent laryngeal nerve 28. A 55-year-old male undergoing robotic prostatectomy is placed in steep Trendelenburg position. Central venous pressure and arterial lines are monitored. Which physiological change is expected as a direct result of steep Trendelenburg positioning? A. Decreased intrathoracic pressure B. Decreased intracranial pressure C. Increased venous return and increased intracranial pressure D. Marked improvement in functional residual capacity (FRC) 29. An anesthesiologist prepares to perform a brachial plexus block for a forearm surgery. Which approach to the brachial plexus block carries the highest risk of causing an accidental pneumothorax? A. Supraclavicular approach B. Axillary approach C. Interscalene approach D. Infraclavicular approach 30. A 48-year-old patient in septic shock requires invasive arterial blood pressure monitoring. The radial artery is selected for cannulation. Which clinical test is performed prior to radial artery cannulation to assess the adequacy of collateral blood flow through the ulnar artery? A. Trousseau's test B. Allen's test C. Finkelstein's test D. Homans' test

16. A 29-year-old patient in the ICU post-trauma requires prolonged mechanical ventilation. The team considers using an inhalational anesthetic agent for sedation. Which inhalational agent is known to cause metabolic degradation into inorganic fluoride ions, posing a risk of high-output renal failure? A. Desflurane B. Isoflurane C. Sevoflurane D. Methoxyflurane 17. A 26-year-old male presents to the casualty with severe burns over 40% total body surface area, sustained 72 hours ago. He requires immediate escharotomy and debridement under general anesthesia. Which drug is strictly contraindicated for intubation in this patient due to the risk of hyperkalemic cardiac arrest? A. Succinylcholine B. Rocuronium C. Propofol D. Etomidate 18. A 50-year-old patient undergoing craniotomy under general anesthesia experiences a sudden surge in blood pressure. The neuroanesthetist wants to lower the intracranial pressure (ICP) rapidly. Which intravenous osmotic diuretic agent is most widely used to reduce cerebral edema and ICP? A. Furosemide B. Acetazolamide C. Mannitol D. Hypertonic saline 0.9% 19. A newborn delivered at 38 weeks gestation via normal vaginal delivery is evaluated at 1 minute after birth. Heart rate is 110 bpm, respiratory effort is slow and irregular, muscle tone shows some flexion of extremities, grimace is present on nasal suctioning, and body is pink with blue extremities. What is the APGAR score for this infant? A. 9 B. 8 C. 7 D. 6 20. A 45-year-old chronic alcoholic is brought for emergency wound debridement. The anesthesiologist chooses Intravenous Ketamine for procedural sedation. Which unique pharmacological property characterizes Ketamine anesthesia? A. Dissociative anesthesia with respiratory preservation and bronchodilation B. Deep muscle relaxation with profound respiratory depression C. Marked decrease in cerebral blood flow and intracranial pressure D. Severe bradycardia and intense systemic vasodilation 21. A 70-year-old male with severe coronary artery disease undergoes emergency repair of an incarcerated hernia. The anesthesiologist selects Etomidate for induction of anesthesia. What is the primary adverse effect associated with a single bolus dose of Etomidate? A. Severe hypotension due to histamine release B. Transient adrenocortical suppression via 11-beta-hydroxylase inhibition C. Malignant ventricular arrhythmias D. Severe persistent bronchospasm 22. A 34-year-old pregnant patient requires non-obstetric surgery during her second trimester. The anesthesiologist reviews the safety of volatile anesthetic agents regarding occupational exposure and environmental safety. Which agent has the lowest blood-gas partition coefficient, enabling the fastest induction and recovery? A. Isoflurane B. Halothane C. Desflurane D. Sevoflurane 23. A 62-year-old patient undergoing a 4-hour pelvic surgery receives a continuous IV infusion of Propofol for maintenance of anesthesia. Postoperatively, the patient develops severe metabolic acidosis, rhabdomyolysis, hyperkalemia, and hepatomegaly. What syndrome is suspected? A. Malignant Hyperthermia B. Central Anticholinergic Syndrome C. Local Anesthetic Systemic Toxicity D. Propofol Infusion Syndrome 24. A 24-year-old male undergoing emergency shoulder reduction under IV regional anesthesia (Bier's block) experiences accidental premature deflation of the pneumatic cuff 5 minutes after local anesthetic injection. What is the most immediate life-threatening complication to monitor for? A. Local Anesthetic Systemic Toxicity (LAST) involving CNS and CVS B. Severe compartment syndrome of the upper limb C. Rapid onset of malignant hyperthermia D. High spinal blockade 25. An emergency patient requires rapid airway management. During direct laryngoscopy, the anesthesiologist visualizes only the epiglottis; no portion of the glottic opening or vocal cords can be seen. According to the Cormack-Lehane classification, what grade is this? A. Grade 1 B. Grade 2 C. Grade 3 D. Grade 4

8. A 4-year-old child undergoes adenotonsillectomy under general anesthesia with sevoflurane and mivacurium. Post-extubation, the child shows inspiratory stridor, sternal retractions, and tracheal tug while attempting to breathe against a closed glottis. What is the immediate first-line management for this complication? A. Immediate intravenous administration of succinylcholine B. Application of 100% oxygen with positive pressure ventilation and jaw thrust C. Emergency cricothyroidotomy D. Nebulized salbutamol administration 9. A 35-year-old female undergoes elective laparoscopic cholecystectomy under general anesthesia. Intraoperatively, the anesthesiologist monitors depth of anesthesia using Capnography and Bispectral Index (BIS). What is the targeted optimal range of BIS value recommended to prevent intraoperative awareness while maintaining adequate depth? A. 80–100 B. 60–80 C. 40–60 D. 10–20 10. A 58-year-old male with severe ischemic heart disease is scheduled for total knee arthroplasty. Spinal anesthesia is planned. Which landmark corresponds to the intercristal line (Tuffier's line), commonly used to locate the L3-L4 intervertebral space? A. Line connecting the posterior superior iliac spines B. Line connecting the anterior superior iliac spines C. Line connecting the inferior angles of the scapulae D. Line connecting the highest points of the iliac crests 11. A 22-year-old male undergoing femur fracture fixation under subarachnoid block develops sudden hypotension (BP 80/50 mmHg) and bradycardia (HR 42 bpm) ten minutes after injection. The level of sensory block is determined to be at the T2 spinal dermatome. What is the primary cause of bradycardia in this patient? A. Blockade of cardioaccelerator sympathetic fibers (T1–T4) B. Unopposed sympathetic outflow from sacral plexus C. Excessive baroreceptor reflex stimulation D. Release of endogenous histamine 12. A 30-year-old female develops a severe postural headache two days after receiving spinal anesthesia for an elective cesarean delivery. The headache worsens on standing and sitting, but completely resolves when supine. It is accompanied by neck stiffness and tinnitus. What is the definitive management option if conservative measures fail? A. Intravenous mannitol infusion B. Epidural blood patch C. High-dose oral acetazolamide D. Subarachnoid saline flush 13. A 65-year-old patient with severe COPD is monitored during upper abdominal surgery under mechanical ventilation. The anesthesia workstation's capnogram displays a characteristic "shark-fin" appearance on the phase III alveolar plateau. What underlying physiological issue does this capnogram wave pattern signify? A. Esophageal intubation B. Malignant hyperthermia C. Rebreathing of carbon dioxide D. Bronchospasm or airway obstruction 14. A 40-year-old male is undergoing emergency laparotomy. The anesthesiologist connects a standard color-coded compressed gas cylinder containing Nitrous Oxide to the anesthesia machine. What is the standard pin-index configuration and color code for a Nitrous Oxide cylinder in India/UK practice? A. Pin Index 2,5; White body with green shoulder B. Pin Index 1,5; Black body with white shoulder C. Pin Index 3,5; Blue body D. Pin Index 2,4; Black body 15. A 52-year-old patient undergoes prolonged abdominal surgery under general anesthesia. Towards the end of the procedure, neostigmine is administered for the reversal of non-depolarizing neuromuscular block. Why is glycopyrrolate co-administered with neostigmine during reversal? A. To enhance the nicotinic effects of neostigmine at the neuromuscular junction B. To counteract muscarinic side effects of neostigmine such as bradycardia and secretions C. To accelerate the hepatic metabolism of neuromuscular blockers D. To prevent central nervous system anticholinergic toxicity

1. A 45-year-old female undergoing elective cholecystectomy is induced with general anesthesia. After administration of succinylcholine for endotracheal intubation, she develops sudden masseter muscle spasm, rapid rise in end-tidal carbon dioxide (EtCO2), temperature spiking to 40.5°C, and generalized muscle rigidity. Arterial blood gas reveals severe metabolic acidosis. Which of the following is the most definitive immediate pharmacological agent for managing this condition? A. Intravenous sodium bicarbonate B. Intravenous dantrolene sodium C. Intravenous amiodarone D. Intravenous hydrocortisone 2. A 32-year-old primigravida at 39 weeks of gestation requests labor analgesia. An epidural catheter is placed successfully at the L3-L4 interspace. After administering a test dose containing lignocaine and epinephrine, the patient immediately reports ringing in her ears, metallic taste, and dizziness, followed by transient heart rate increase. What is the most appropriate next step in management? A. Aspirate catheter, abandon the epidural, and administer lipid emulsion B. Continue the labor epidural with a reduced dose of local anesthetic C. Administer intravenous bolus of atropine to manage HR changes D. Immediately perform an emergency lower-segment cesarean section 3. A 60-year-old male with a history of hypertension and heavy smoking is scheduled for abdominal aortic aneurysm repair. Preoperative evaluation reveals an anticipated difficult airway with a Mallampati class IV score and restricted neck extension. The primary anesthesia provider plans an awake fiberoptic intubation. Which local anesthetic is most commonly used for topical nebulization to block the airway reflexes above the vocal cords? A. Bupivacaine B. Ropivacaine C. Lignocaine D. Prilocaine 4. A 25-year-old trauma victim is brought to the emergency department following a motor vehicle collision. He requires urgent endotracheal intubation due to severe respiratory distress and low GCS. The anesthesiology resident decides to perform Rapid Sequence Induction (RSI). Which of the following sequence of steps accurately reflects standard RSI protocol? A. Pre-oxygenation, routine bagging, muscle relaxant, cricoid pressure, intubation B. Routine bagging, pre-oxygenation, induction agent, cricoid pressure, intubation C. Pre-oxygenation, induction agent + rapid neuromuscular blocker, cricoid pressure, intubation without mask ventilation D. Induction agent, routine bagging, muscle relaxant, intubation, release cricoid pressure 5. A 50-year-old male undergoing a posterior cranial fossa procedure in the sitting position suddenly develops hypotension, tachycardia, end-tidal CO2 drop from 36 mmHg to 14 mmHg, and a mill-wheel murmur on cardiac auscultation. What is the immediate position change required to manage this intraoperative event? A. Trendelenburg position only B. Right lateral decubitus position C. Durant's position (Left lateral decubitus with Trendelenburg) D. Reverse Trendelenburg position 6. A 28-year-old female presents for elective laparoscopic appendectomy. She reports a strong personal history of severe postoperative nausea and vomiting (PONV) after a previous surgery. According to standard risk scoring and guidance, which combination of drugs provides optimal dual-agent prophylaxis against PONV? A. Ondansetron and Dexamethasone B. Metoclopramide and Promethazine C. Cyclizine and Hyoscine D. Domperidone and Ondansetron 7. A 68-year-old male with chronic renal failure (serum creatinine 4.2 mg/dL) is posted for emergency exploratory laparotomy. Neuromuscular blockade is required for muscle relaxation. Which neuromuscular blocking agent is safest in this patient due to its organ-independent degradation via Hofmann elimination? A. Vecuronium B. Pancuronium C. Rocuronium D. Cisatracurium

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Psychology says: When you focus on problems You will have more problems. When you focus on possibilities You will have more opportunities.

Q17. Answer: A (Selective Serotonin Reuptake Inhibitors) Explanation: GAD requires excessive worry for at least 6 months regarding multiple events with somatic symptoms. First-line maintenance treatment consists of SSRIs or SNRIs. Q18. Answer: C (Methylphenidate) Explanation: ADHD features age-inappropriate inattention, hyperactivity, and impulsivity present across ≥2 settings before age 12. Central nervous system stimulants (Methylphenidate) are first-line. Q19. Answer: D (Autism spectrum disorder) Explanation: ASD is characterized by persistent deficits in social communication/interaction (poor eye contact, lack of social smile) alongside restricted, repetitive patterns of behavior and insistence on sameness. Q20. Answer: A (Absolute Neutrophil Count) Explanation: Clozapine carries a risk of life-threatening agranulocytosis (<0.5%). Mandatory weekly to monthly monitoring of Absolute Neutrophil Count (ANC) is required. Q21. Answer: B (Intravenous Benztropine or Promethazine) Explanation: Acute dystonia (torticollis, oculogyric crisis) occurs hours to days after initiating high-potency antipsychotics. It is rapidly reversed using anticholinergics (Benztropine, Promethazine, or Diphenhydramine). Q22. Answer: C (Administer Valbenazine) Explanation: Tardive dyskinesia consists of involuntary choreoathetoid movements after chronic neuroleptic exposure. VMAT2 inhibitors (Valbenazine, Deutetrabenazine) are FDA-approved targeted treatments. Anticholinergics worsen it. Q23. Answer: D (Haloperidol) Explanation: Delirium presents with fluctuating consciousness, visual hallucinations, and acute cognitive impairment secondary to an underlying medical cause (e.g., UTI). Low-dose Haloperidol is preferred for acute severe agitation; benzodiazepines worsen delirium. Q24. Answer: A (Acetylcholinesterase inhibitors) Explanation: Alzheimer's dementia presents with insidious progressive memory loss and temporal/hippocampal atrophy. Acetylcholinesterase inhibitors (Donepezil, Galantamine, Rivastigmine) increase synaptic acetylcholine and are first-line. Q25. Answer: C (Frontotemporal dementia) Explanation: Frontotemporal dementia (Pick's disease) presents in younger patients (50s) with early disinhibition, hyperorality, loss of empathy, and frontal/temporal focal atrophy, with relative preservation of memory initially. Q26. Answer: B (Dementia with Lewy bodies) Explanation: DLB is characterized by visual hallucinations, fluctuating cognition, spontaneous parkinsonism, and extreme neuroleptic sensitivity (severe EPS when given antipsychotics like Risperidone). Q27. Answer: D (Naloxone) Explanation: The classic triad of opioid overdose includes respiratory depression, pinpoint pupils (miosis), and central nervous system depression. IV Naloxone is the immediate life-saving competitive opioid antagonist. Q28. Answer: C (Cannabis) Explanation: Cannabis intoxication manifests as conjunctival hyperemia (red eyes), increased appetite ("munchies"), dry mouth, tachycardia, altered time perception, and short-term memory impairment. Q29. Answer: A (Dialectical Behavior Therapy) Explanation: Borderline Personality Disorder features emotional instability, self-harm, fear of abandonment, and defense mechanism of splitting. Dialectical Behavior Therapy (DBT) is the evidence-based treatment of choice. 30. Answer: B (Normal grief reaction) Explanation: Normal grief (bereavement) involves sadness and transient auditory illusions of the deceased within months of loss, but self-esteem remains intact with waves of grief rather than pervasive worthlessness seen in MDD.

Q1. Answer: B (Schizophrenia) Explanation: Presence of delusions of control (passivity phenomenon—a Schneiderian first-rank symptom) along with negative symptoms lasting >6 months meets the diagnostic criteria for Schizophrenia. Q2. Answer: A (Hemodialysis and aggressive intravenous hydration) Explanation: Thiazide diuretics reduce renal lithium clearance, leading to severe toxicity (level >2.0 mEq/L with neurological signs). Hemodialysis is the treatment of choice for severe lithium toxicity. Q3. Answer: C (Electroconvulsive Therapy) Explanation: ECT is the treatment of choice in severe MDD with psychotic features, severe suicidality, or refusal of food/water leading to life-threatening dehydration/inanition where rapid response is mandatory. Q4. Answer: D (Selective Serotonin Reuptake Inhibitors) Explanation: SSRIs (e.g., Sertraline, Paroxetine) are the first-line long-term pharmacotherapy for Panic Disorder with or without Agoraphobia. Benzodiazepines are restricted to acute short-term relief. Q5. Answer: C (Exposure and Response Prevention) Explanation: Exposure and Response Prevention (ERP), a specialized behavioral therapy, is the gold-standard non-pharmacological treatment for Obsessive-Compulsive Disorder (OCD). Q6. Answer: A (Chlordiazepoxide) Explanation: Delirium Tremens (alcohol withdrawal delirium) presents with autonomic instability, delirium, and visual hallucinations 48–96 hours after cessation. Long-acting benzodiazepines like Chlordiazepoxide are first-line. Q7. Answer: D (Thiamine deficiency) Explanation: Wernicke encephalopathy is characterized by the classic triad of confusion, ophthalmoplegia/nystagmus, and ataxia due to Vitamin B1 (thiamine) deficiency in chronic alcoholism. Q8. Answer: B (Dantrolene sodium) Explanation: Neuroleptic Malignant Syndrome (NMS) presents with fever, muscle rigidity ("lead-pipe"), autonomic instability, and elevated CK following neuroleptic therapy. Dantrolene (or Bromocriptine) is the specific antidote. Q9. Answer: C (Delusional disorder, erotomanic type) Explanation: Non-bizarre delusion focused on a high-status person being in love with the patient (Erotomania/De Clerambault syndrome) without other psychotic symptoms or functional deterioration indicates Delusional Disorder. Q10. Answer: D (Schizoid personality disorder) Explanation: Schizoid personality disorder is marked by social detachment, preference for solitary activities, lack of desire for close relationships, and emotional coldness/indifference to praise or criticism. Q11. Answer: A (Lanugo hair growth on the body) Explanation: Anorexia nervosa features restriction of energy intake, low BMI (<18.5), intense fear of weight gain, and physical signs like lanugo fine hair growth, bradycardia, and amenorrhea. Q12. Answer: B (Hypokalemic hypochloremic metabolic alkalosis) Explanation: Recurrent self-induced vomiting in Bulimia Nervosa causes loss of stomach acid (HCl) and potassium, resulting in hypokalemic hypochloremic metabolic alkalosis along with parotid enlargement and Russell sign. Q13. Answer: D (Somatic symptom disorder) Explanation: Somatic symptom disorder involves one or more distressing physical symptoms causing excessive, persistent thoughts, anxiety, and devotion of time/energy, lasting >6 months despite negative medical workups. Q14. Answer: C (Dissociative fugue) Explanation: Dissociative fugue involves sudden unexpected travel away from home accompanied by amnesia for past identity and personal history, often triggered by severe psychosocial stress. Q15. Answer: B (Hypocretin-1 (Orexin-A) deficiency) Explanation: Narcolepsy type 1 is pathognomonically linked to loss of hypothalamic orexin/hypocretin-producing neurons, presenting with excessive daytime sleepiness, cataplexy (triggered by emotion), and SOREMPs. Q16. Answer: D (Post-traumatic stress disorder) Explanation: PTSD diagnosis requires trauma exposure, intrusive re-experiencing, avoidance, hyperarousal, and mood alterations lasting >1 month. Acute Stress Disorder is diagnosed if symptoms last <1 month.

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