Random USMLE Facts volume 6-3

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Random USMLE Facts volume 6-3:

USMLE Facts 1 USMLE Facts 2 USMLE Facts 3 USMLE Facts 4 USMLE Facts 5
USMLE Facts 6 USMLE Facts 7 USMLE Facts 8 USMLE Facts 9 USMLE Facts 10

What is the best way to confirm hypothyroidism?

TSH value measurement. T4 values take a while to decline and T3 values are the last to decline.

What type of diet can improve conditions in patients with defective urea cycle?

Low protein intake.

What are floating ribs?

See: Notes on Thorax

What is the Beck's triad?

Hypotension, distended (jugular) neck veins, and distant or muffled heart sounds - seen in cardiac tamponade.

Infectious routes of certain meningitis causing bacteria:

• H. influenzae: pharynx to lymphatics to meninges.
• S. pneumoniae: middle ear to contiguous tissues to meninges.
• S. aureus: traumatic wound to leaking CSF to meninges.
• M. tuberculosis: primary lung focus to blood to meninges.
• N. meningitidis: pharynx to blood to choroid plexus to meninges.

What are some findings in Paget's disease?

See: Notes on Musculoskeletal Disorders

What are some water-insoluble molecules?

See: Notes on Amino Acids, Proteins, Enzymes

What is osteitis fibrosa cystica?

Osteitis fibrosa cystica (soft and deformed bones) is a complication that occurs in end-stage renal disease. During end-stage renal disease, there is decreased synthesis of vitamin D, which causes hypocalcemia, which, in turn causes hyperparathyroidism.

What is a cause of bicornuate uterus or uterus didelphys?

Failure of fusion of paramesonephric ducts.

What are some findings in infant homocystinuria?

Vision problems, mental retardation, and potential for myocardial infarction and/or stroke. See: Notes on Amino Acid Metabolism Disorders

What are the different types of rapidly progressive (crescentic) glomerulonephritis?

• RPGN Type I: characterized by anti-GBM antibodies. Linear deposits of IgG and C3 found on immunofluorescence. Associated with Goodpasture syndrome.
• RPGN Type II: immune-complex mediated. "Lumpy bumpy" granular pattern.
• RPGN Type III: "Pauci immune." ANCA in serum.

What happens in patients with deficiencies that form membrane attack complex (MAC, C5b-C9)?

Infection by Neisseria species.

What may be a cause of pure T-cell dysfunction?

DiGeorge syndrome.

What may be a cause of ineffective intracellular killing?

Chronic granulomatous disease.

Which bacterial toxins inhibit protein synthesis?

E. coli (EHEC) and S, dysenteriae block 60s ribosomal subunit, thereby, blocking protein synthesis.

What is the pathogenicity of B. anthracis?

Antiphagocytic D-glutamate capsule (protein capsule).

What is the mechanism of action of milrinone?

Inhibition of phosphodiesterase isoenzyme 3 causing vasodilation.

USMLE Facts 1 USMLE Facts 2 USMLE Facts 3 USMLE Facts 4 USMLE Facts 5
USMLE Facts 6 USMLE Facts 7 USMLE Facts 8 USMLE Facts 9 USMLE Facts 10

Additional Readings:

Random USMLE Facts

1. Random USMLE Facts volume 1-1
2. Random USMLE Facts volume 2-1
3. Random USMLE Facts volume 3-1
4. Random USMLE Facts volume 4-1
5. Random USMLE Facts volume 5-1
6. Random USMLE Facts volume 6-1
7. Random USMLE Facts volume 7-1
8. Random USMLE Facts volume 8-1
9. Random USMLE Facts volume 9-1
10. Random USMLE Facts volume 10-1
11. Random USMLE Facts volume 11-1
12. Random USMLE Facts volume 12-1

General and Systemic Examinations

1. General Examination for Internal Medicine
2. Jugular Venous Distention Workup
3. ER Chest Pain Workup
4. Format for Patient Presentation
5. Pulmonary Examination for Internal Medicine
6. Cardiac Examination for Internal Medicine
7. Abdominal Examination for Internal Medicine
8. Cranial Nerve Reflexes
9. Motor System Examination
10. Random Sensory System Facts
11. Random Stroke Facts

Medical Files & Presentations

1. USMLE Flashcards [Size: 1.9 MB; Format: MS Powerpoint]
2. Otitis Media in Children [Size: 5.4 MB; Format: MS Powerpoint]
3. Irritable Bowel Syndrome [Size: 170 kB; Format: MS Powerpoint]
4. Acid-Base Disturbance: Acidotic or Alkalotic? [Size: 427 kB; Format: PDF]
5. Thrombocytopenia [Size: 2.42 MB; Format: MS Powerpoint]
6. Are Face Transplants Ethical? [Size: 70.2 kB; Format: MS Powerpoint]

USMLE Step 2 CS Videos

1. Video of Cardiology Examination in a Clinical Setting
2. Video of Neurology Examination in a Clinical Setting
3. Video of Pulmonology Examination in a Clinical Setting
4. Video of Musculoskeletal Examination in a Clinical Setting
5. Video of Abdominal Examination in a Clinical Setting
6. Video of HEENT Examination in a Clinical Setting
7. Video and Description of Rinne Hearing Test
8. Video and Description of Weber Hearing Test

USMLE Laboratory (lab) Values

1. USMLE Blood Lab Values
2. USMLE Cerebrospinal Lab Values
3. USMLE Hematologic Lab Values
4. USMLE Sweat and Urine Lab Values

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