DAILY FOCUS TEST (DFT)
🔬 Today's Test: BIOSTATISTICS
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🔬 Today's Test: BIOSTATISTICS
👉 https://app.maxemo.app/s/dft-emree
Yesterday's Ranks🏆
INTERNAL MEDICINE
1. Reyansh Malhotra
2. Rizwan H
3. Sara
4. Samyak99
5. anjali
6. Silverlin
7. Shruti p
8. Siddharth Sharma
9. Mahmoud_k
10. Ahmed
⏳ Test Ends at 07:00 PM
Join channel 👇
https://t.me/studywithmaxemoemree
A 68 y/o M presents with a resting tremor, rigidity, bradykinesia, and a shuffling gait. Which of the following is the primary pathophysiological mechanism underlying his condition?
Anonymous Quiz
80%
Decreased dopamine leading to increased acetylcholine tone
8%
Degeneration of upper and lower motor neurons
4%
Autoimmune destruction of acetylcholine receptors
8%
Reduced gamma-aminobutyric acid (GABA) in the striatum
Maxemo EMREE 26-27
A 68 y/o M presents with a resting tremor, rigidity, bradykinesia, and a shuffling gait. Which of the following is the primary pathophysiological mechanism underlying his condition?
💡 EXPLANATION:
Parkinson disease results from dopaminergic neuron loss in the substantia nigra. Decreased dopamine causes a relative increase in acetylcholine tone, leading to motor inhibition and the classic triad of tremor, rigidity, and bradykinesia.
A 22 y/o man presents with ascending weakness and absent reflexes 1 week after a diarrheal illness. CSF analysis shows high protein with normal WBC count. Which of the following best describes the underlying pathology?
Anonymous Quiz
4%
Degeneration of motor neurons in the anterior horn
50%
Autoimmune demyelination of peripheral nerves
29%
Autoimmune demyelination of central nervous system
17%
Antibody-mediated blockade of acetylcholine receptors
Maxemo EMREE 26-27
A 22 y/o man presents with ascending weakness and absent reflexes 1 week after a diarrheal illness. CSF analysis shows high protein with normal WBC count. Which of the following best describes the underlying pathology?
💡 EXPLANATION:
Guillain-Barré syndrome is a post-infectious autoimmune condition causing demyelination of peripheral nerves. Diagnosis is supported by albuminocytologic dissociation (elevated protein with normal WBC) on CSF analysis.
A 4 y/o boy presents with a 2/6 systolic murmur at the left lower sternal border. The murmur intensity decreases upon standing and increases when lying supine. He is otherwise asymptomatic. What is the most likely diagnosis?
Anonymous Quiz
17%
Ventricular septal defect
21%
Atrial septal defect
25%
Innocent murmur
38%
Mitral valve prolapse
A 9 y/o girl presents with migratory polyarthritis and painless subcutaneous nodules. Which laboratory test provides the essential evidence to confirm the underlying diagnosis?
Anonymous Quiz
22%
Rheumatoid factor level
9%
Antinuclear antibody (ANA)
70%
Anti-streptolysin O (ASO) titer
0%
Erythrocyte sedimentation rate (ESR)
Maxemo EMREE 26-27
A 9 y/o girl presents with migratory polyarthritis and painless subcutaneous nodules. Which laboratory test provides the essential evidence to confirm the underlying diagnosis?
💡 EXPLANATION:
The clinical presentation suggests acute rheumatic fever. To fulfill the Jones criteria, evidence of a preceding Group A Streptococcal infection is required, typically confirmed by an elevated Anti-streptolysin O (ASO) titer.
A 9-mo infant presents with 10% dehydration, doughy skin, and a high-pitched cry. Labs reveal Na 155 mmol/L and K 2.3 mmol/L. What is the most likely diagnosis?
Anonymous Quiz
90%
Hypernatremic dehydration
5%
Hyponatremic dehydration
0%
Isotonic dehydration
5%
Hypokalemic alkalosis
Maxemo EMREE 26-27
A 9-mo infant presents with 10% dehydration, doughy skin, and a high-pitched cry. Labs reveal Na 155 mmol/L and K 2.3 mmol/L. What is the most likely diagnosis?
💡 EXPLANATION:
Doughy skin, high-pitched cry, and Na > 150 mmol/L indicate hypernatremic dehydration. This occurs when water loss exceeds sodium loss, leading to a concentrated extracellular compartment.
A macrosomic neonate born to a diabetic mother is found to have a blood glucose level of 2.2 mmol/L. What is the most appropriate next step in management?
Anonymous Quiz
25%
Reassure and observe the neonate
45%
Initiate enteral feeding and recheck
25%
Administer intravenous 50% dextrose
5%
Administer intramuscular glucagon
Maxemo EMREE 26-27
A macrosomic neonate born to a diabetic mother is found to have a blood glucose level of 2.2 mmol/L. What is the most appropriate next step in management?
💡 EXPLANATION:
Neonatal hypoglycemia (glucose < 2.6 mmol/L) in infants of diabetic mothers requires immediate intervention to prevent brain injury. Enteral feeding is the appropriate first step for asymptomatic neonates, followed by rechecking.
A 30-week premature infant develops tachypnea and grunting shortly after birth. Chest X-ray reveals bilateral ground-glass opacities and air bronchograms. Which of the following is the most likely diagnosis?
Anonymous Quiz
18%
Transient tachypnea of the newborn
18%
Meconium aspiration syndrome
64%
Respiratory distress syndrome
0%
Persistent pulmonary hypertension
Maxemo EMREE 26-27
A 30-week premature infant develops tachypnea and grunting shortly after birth. Chest X-ray reveals bilateral ground-glass opacities and air bronchograms. Which of the following is the most likely diagnosis?
💡 EXPLANATION:
Respiratory distress syndrome (RDS) in premature infants is caused by surfactant deficiency, leading to alveolar collapse. Classic chest X-ray findings include diffuse ground-glass opacities and air bronchograms.
A 4-month-old girl presents to the clinic. Examination reveals a disproportionately large head, dilated scalp veins, and downward deviation of the eyes (sun-setting eyes). What is the most likely diagnosis?
Anonymous Quiz
19%
Craniosynostosis
71%
Hydrocephalus
10%
Congenital hypothyroidism
0%
Acute bacterial meningitis
Maxemo EMREE 26-27
A 4-month-old girl presents to the clinic. Examination reveals a disproportionately large head, dilated scalp veins, and downward deviation of the eyes (sun-setting eyes). What is the most likely diagnosis?
💡 EXPLANATION:
Macrocrania, dilated scalp veins, and sun-setting eyes (downward deviation) are classic clinical signs of hydrocephalus causing increased intracranial pressure (ICP) in infants.
A 10-month-old infant presents after a 3-minute generalized tonic-clonic seizure associated with a fever of 39°C. The child is currently alert and neurologically intact. What is the most appropriate management?
Anonymous Quiz
24%
Start prophylactic valproic acid
57%
Reassurance and discharge
10%
Perform a lumbar puncture
10%
Order an urgent EEG
Maxemo EMREE 26-27
A 10-month-old infant presents after a 3-minute generalized tonic-clonic seizure associated with a fever of 39°C. The child is currently alert and neurologically intact. What is the most appropriate management?
💡 EXPLANATION:
This is a simple febrile seizure (generalized, <15 mins, no recurrence in 24h). Since the infant is neurologically normal, routine EEG, lumbar puncture, or daily antiepileptic prophylaxis are not indicated. Reassurance is the best step.
A 7 y/o boy presents with brief staring spells lasting 10 seconds. He resumes normal activity immediately with no postictal confusion. What is the most likely diagnosis?
Anonymous Quiz
5%
Focal impaired awareness seizure
80%
Absence seizure
5%
Juvenile myoclonic epilepsy
10%
Lennox-Gastaut syndrome
Maxemo EMREE 26-27
A 7 y/o boy presents with brief staring spells lasting 10 seconds. He resumes normal activity immediately with no postictal confusion. What is the most likely diagnosis?
💡 EXPLANATION:
Absence seizures present with brief staring spells and no postictal confusion. Typical EEG shows a 3 Hz spike-and-wave pattern. First-line treatment is ethosuximide.