CK NBME6 answer and explaination

Block1 Answer topic Note
1 B borderline personality disorder
2 A Libido androgen and libido
3 F Myotonic muscular dystrophy wasting of the muscles (muscular dystrophy), cataracts, heart conduction defects, endocrine changes, and myotonia. CTG repeats.
4 C primary prevention and incidence
5 B increase meds compliance in adolescents Negotiate a contract
6 G pupillary light reflex MS-optic neuritis-Marcus Gunn pupil
7 A BZ withdrawal
8 A contact dermatitis image: bullous. Tx: avoid wooded area
9 E vit B1 deficiency
10 E pulmonary contusion
11 C peritonitis-in peritoneal dialysis paracentesis and gram stain
12 F PDA
13 E strawberry hemagioma
14 C Dehydration- hyaline cast
15 D insulin resistance in T2DM
16 D temporal arteritis Rx: high dose GCs
17 D PCOS
18 D IBD
19 E Postpartum thyroiditis hypothyroidism (associate with hyperlipidemia) Dx: TSH
20 C intramural hematoma of small bowel after warfarin use
21 B Sjögren’s Syndrome Vaginal dryness, dry eye
22 A 2mon old development milestone
23 D 18yo female screening STD: N gonorrhea, C. trachomatis
24 A Nursemaid’s Elbow Tx: hypersupination of forearm
25 A acute marijuana/cannabis intoxication Injected sclerae, increased appetite, dry mouth, euphoria and paranoia
26 A travel to Egypt Mefloquine
27 E hyperkalemia Rx: IV calcium gluconate
28 C Athma attack  inhaled short-acting β-agonists
29 C viral myocarditis Echo: hypokinesia and dilation of ventricle
30 L lateral medullary S-PICA
31 A remove Foley catheter to avoid UTI
32 C post-operative intra-abdominal hemorrhage
33 B pica-IDA Dx:CBC first
34 H CGD neutrophils filled with bacteria
35 I pseudodementia
36 H HD
37 D tension pneumothorax tube thoracostomy
38 C gallstone ileus air in the live
39 A RAS 57yo, smoking, atherosclerosis.
40 B CF
41 G primary lung TB travelled to Asia, fever, cough, right chest pain, CXR: right pleural effusion, hilar adenopathy
42 B intussusception
43 C IUFD recommend autopsy
44 D MS
45 B ankylosing spondylitis HLAB27
46 E MS PAH
Block2
1 A contraception in adolescents
2 G IIH
3 C crypotococcal meningitis
4 E acne: comedoes, pustule no scarring Rx: topical retinoids
5 C GCs and increased leukocytosis demargination
6 E Reinsertion of Foley catherter
7 D tricuspid regurgitation
8 F AAA rupture acute onset back pain, tachycardia, AXR: calcification anterior to vertebral body
9 B septic arthritis Dx: anthrocentesis
10 B Glycogen storage disease (Pompe’s disease)  prominent cardiomegaly, hypotonia, and death before 2 yr of age
11 F social phobia
12 B vomiting hypokalemia hypochloride metabolic alkalosis
13 D URTI auscultation: normal heart sound
14 E MVC hypotension Rx: NS
15 D IgA deficiency transfusion related anaphylaxis
16 C aspiration pneumonia AD decreased gag reflex
17 D stress incontinence
18 C overflow incontinence
19 E Postpartum depression 5w, suicide and infanticide thoughts-hospitalization
20 C vascular ring relief of wheezing with extension of the neck
21 G viral encephalitis fever, confusion, CSF(RBC increase)
22 D Analgesic nephropathy
23 B adjustment disorder with anxiety
24 A Anovulation positive progesterone challenge test-any withdrawal bleeding is diagnostic of anovulation;
25 D Heat stroke inadequate dissipation of heat
26 E PUD perforation Tx: Laparotomy
27 A T1DM-DKA
28 C pyloric stenosis Nonbilious projectile vomiting
29 A DVT hypercoagulability of pregnancy
30 E HBV vaccine Vaccine non-responsive
31 B Hemothorax
32 N SIADH-Asx hyponatremia Tx: fluid restriction
33 A constrictive pericarditis from radiation
34 C Multiple myeloma
35 B Nightmare disorder recall the dream, causing distress, occurs during REM sleep
36 A post-C section pain reassurance
37 E Fragile X S
38 C confidentiality
39 E spinal cord compression point tenderness, hyperreflex, muscle weakness, Tx: decompression, cervical stabilization
40 B fast lipid profile if TC>200mg/dl
41 D Latex allergy new job medical assisstant
42 D IBS
43 A Pap smear start from 21yo
44 B fibromyalgia
45 B TMP-SMX allergy rash
46 B pharyngitis in kids Rapid GAS neg then throat culture, give antibiotics after culture results come back
Block3
1 D preterm delivery risk factor greatest: previous preterm delivery
2 C depression ask about suicidal feeling
3 B pleural effusion-transudate Protein<2.5g/dl, glucose>60mg/dl, WBC<10000,
4 F addison’s disease Dx: ACTH stimulation test
5 B AOM—Mastoiditis Dx: CT
6 E HDN-Rh hemolysis mother Rh-, baby Rh+
7 C NST
8 A PAD mild, ABI 0.6-exercise
9 F Malingering to avoid hearing
10 C lactose intolerance? malabsorption
11 D normal aging-all but memory loss reduced or absent ankle reflex, outstretched hands tremor, vibratory sensation in toes
12 A cardiac tamponade Dx:Echo. It can guide pericardiocentesis
13 D disk herniation Tx: weight loss
14 H abdominal stab injury Tx: laparotomy
15 B Diverticulitis Dx: CT
16 E MG-Thymoma CT: anterior mediastinum mass
17 D bile duct dilation and jaundice ERCP
18 B Myocardial contusion PCWP increase after hydration, low PO2
19 C stress test before exercise program
20 C haloperidol decanoate in noncompliant pts
21 E PCP intoxication
22 A primary hyperaldosteronism
23 B bacterial vaginosis clue cells, grey discharge, fishy odor,PH>4.5
24 G myelomeningocele chiari II -cerebellar tonsillar herniation with aqueduct stenosis and hydrocephaly. Presents with syringomyelia and myelomeningocele
25 A carbamazepine-agranolocytosis
26 C HIV pt vaccination pneumococcus, influenza
27 C PE Tx: heparin
28 E pleural effusion thoracentesis
29 B crypotococcal meningitis Rx: amphotericin followed by fluconazole. Not itraconazole which is hardly to penetrate the BBB
30 B PPV and prevalence
31 B naproxen-ATN
32 E PCA after surgery PCA morphine
33 E Broton’s agammaglobulinemia
34 G intraductal papilloma
35 D hyponatremia SIADH by small cell ca
36 A aortic incompetence by Marfan’s S
37 A Atopic dermatitis is susceptable to eczema herpeticum
38 C wernicke encephalopathy Alcoholism, nystagmus, ataxia, confusion
39 B amaurosis fugax and stroke first do carotid artery duplex
40 E Guillain-Barre syndrome Dx:EMG and NCV
41 D food poisoning egg salad-S. aureus
42 F CTS
43 P ulnar n
44 C vertebra metastatic prostate ca osteoblastic
45 D PCP pneumonia after chemotherapy PCP CXR: bilateral alveolar and interstitial infiltrate
46 D testis mass- germinal tumor in young adult VS hydrocele, spermatocele (tranilluminate+), varicocele(transilluminate-, valsava increase size
Block4
1 E sporotricosis
2 B empyema High fever, history of pneumonia, and dullness to percussion indicated pleural effusion
3 C emergency contraception 24h after intercourse Rx:levonogesterol
4 E VitD deficiency due to malasorption hypocalcemia
5 N wean respirator/extubation indication
6 C Adrenoleukodystrophy disorder of peroxisomal fatty acid beta oxidation:CNS Degeneration and Adrenal Cortical Insufficiency
7 A adnexal mass 24yo, 5cm tender: repeat exam in 2w VS postmenopausal: USG
8 A Anal fissure pain and bright red rectal bleed while defecation. Tx: anesthetics, stool softener
9 A pheochromocytoma
10 E hypertensive crisis Rx:nitroprusside
11 B panic attack BZs
12 E adolescent HTN first-line lifestyle
13 D ACEI in preventing progress of diabetic nephropathy
14 A NF1 may have pheochromacytoma
15 D Sick cell D and folic acid demand
16 E lithium check TSH for potential hypothyroidism
17 E Acute pancreatitis due to cholelithiasis
18 D overflow incontinence
19 A PDA or ASD? no murmur at birth is because high pulmonary vascular resistance
20 D Asymptomatic hypercalcemia the most common cause is primary hyperparathyroidism. Check PTH first
21 D Factitious disorders
22 D HCM
23 G orthostatic hypotension
24 A adnexal mass-teratoma
25 C morning sickness anti-emetics
26 A withhold information pts have right to withhold their own medical information
27 E gastric bypass surger-bariatric surgery BMI75!
28 A CVC infection
29 F Digorge S
30 C acute gout Rx: indomethacin
31 B esophageal perforation crepitus in the neck
32 A brain abscess due to ABE. Fever, headache, focal neurologic deficit, seizure
33 C emphysema AAT1 deficiency–liver cirrhosis
34 E TOF
35 E Coarctation of the aorta surgery repair after stabilization
36 A confunding factors
37 C VitC deficiency
38 B complex partial seizure VS absence: No aura; usually <30 seconds; no postictal period; hyperventilation triggers 3HZ spike-and-wave pattern on the normal background
39 B choriocarcinoma Larger uterus than actual gestational age(24w-umbilicus)+Higher beta-HCG+ no fetal heart tone
40 E BPH VS chronic protatitis
41 B acute rejection 1 mon after renal transplantation Rx:high-dose GCs (need biopsy, DD CMV infection)
42 A lead poisoning Abdominal pain+ headache/memory loss/ataxia(CNS)+decreased sensation(PNS)+ microcytic anemia
43 B lichen sclerosus (LS&A) Itching, white , thin vulva. Parchment-like. Biopsy for SCC, Rx: topical high potency GCs
44 E osteoporotic compression fracture prednisone hx, tenderness to percussion of lumbar spine
45 D muscle strain Tenderness over lumbar paraspinal region bilaterally
46 A Drowning 36h later—ARDS initially cyanotic, 5min resuscitation began to cough and breathe
本篇發表於 USMLE。將永久鏈結加入書籤。

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