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Step 2CK MSK/NEUROLOGY - UWORLD + FA 2016
Step 2CK MSK/NEUROLOGY- UWORLD + FA 2016
85
Medical
Post-Graduate
10/20/2016

Additional Medical Flashcards

 


 

Cards

Term
What are the 4 major clinical signs of a posterior circulation stroke?
Definition
4 Deadly "Ds"

1) Diplopia
2) Dizziness
3) Dysphagia
4) Dysarthria
Term
What part of the spinal chord is affected in Poliomyositis and how does it present?
Definition
LMN lesions leading to destruction of anterior horn cells and producing flaccid paralysis below lesion.
Term
What are the differentiating features of ALS from other paralytic diseases?
Definition
Combination of UMN and LMN.

There are no sensory or oculomotor deficits

Riluzole (anti-glutamate) will delay progression
Term
What are you most concerned about in an elderly patient with absent DTRs, ataxia and a positive romberg sign?
Definition
Sounds like degeneration of dorsal columns with areflexia.

This is typical of Tabes dorsals in tertiary syphillis. Also consider B12.
Term
What conditions can produce an UMN lesion of facial nerve?
Definition
Will lose lower division on contralateral side.

ALexander Bell with STD: AIDS, Lyme, Sarcoid, Tumors, Diabetes
Term
in an MCA stroke, in which direction will eyes deviate? Why?
Definition
Toward side of lesion because of loss of FEF, which drives contralateral movement
Term
What is the nerve root and nerve of the following reflexes?

1) Triceps
2) Biceps
3) BR
4) Patellar
5) Achilles
6) Babinski
Definition
1) Radial, C7
2) Musculocutaneous, C5
3) Radial, C5
4) Femoral, L2-4
5) S1
6) Normal in 1st year of life, then sign of UMN lesion
Term
What are absolute contraindications to TPA therapy?
Definition
SAMPLE STAGES

1) Stroke or trauma within 3 months
2) Anticoagulation with INR > 1.7 or prolonged PTT
3) MI in past 3 months
4) Prior ICH
5) Low platelet count (<100k)
6) Surgery in past 14 days
7) TIA within 6 months
8) GI or urinary bleeding in past 21 days or Glucose < 50
9) Elevated (> 400) or decreased (< 50) Glucose
10) Seizures present with stroke.
Term
What are the appropriate medical treatment measures in a patient with an ischemic stroke > 3 hours ago?
Definition
Can't use TPA

- ASA, or if patient on ASA, consider Clopidogrel
- Treat fever and hyperglycemia
- If increased ICP, use mannitol and hyperventilation
Term
How would a PCA stroke present?
Definition
Vertigo and homonymous hemianopsia
Term
How would a Lacunar infarct present?
Definition
Pure motor, pure sensory, ataxic hemiparesis or dysarthria
Term
What are the major risks after SAH? How are they prevented?
Definition
1) Re-bleed: Keep BP < 150
2) Obstructive hydrocephalus: Raise head and hyperventilate, place drain
3) Vasospasm: use Nimodipine
Term
Describe your workup in a suspected SAH
Definition
1) Non-con CT first
2) If negative, get LP and look for Xanthocrhomia and increased protein/opening pressure
3) Get Angiography once SAH confirmed
Term
Which conditions are associated with berry aneurysms?
Definition
1) Marfan
2) Aortic coarcation
3) Kidney disease (ADPKD)
4) Ehlers-Danlos
5) Sicke cell, tobacco
6) Atherosclerosis
7) History/HTN/Hyperlipidemia
Term
What is the diagnostic study of choice for Cavernous Sinus Thrombosis? How is it treated?
Definition
1) MRI
2) IV Empiric antibiotics for 3-4w: Nafcillin/Vancomycin + Ceftriaxone + MTZ +/- anti-fungal
Term
Which neurotransmitter systems are associated with Migraine? What are typical triggers?
Definition
1) 5-HT and Dopamine

2) Foods, fasting, stress, menses, OCPs, bright light, sleep disturbance
Term
What is the prophylactic treatment for Migraine and Cluster headaches?
Definition
1) Migrane
- ADEs, TCA, Beta blockers

2) Cluster
- Verapimil
Term
What are the risk factors for IIH? How is it treated?
Definition
Give acetazolamide or possibly consider shunt

1) Obesity
2) Tetracycline use
3) Growth hormone
4) Excess vitamin A
Term
What are the typical features of a tonic-clonic seizure?
Definition
1) Incontinence and Tongue biting
2) Cyanotic appearance during octal period
3) Post-ictal confusion
Term
What are the classic EEG findings for the following seizures?

1) Absence
2) Tonic-clonic
3) Partial
Definition
1) 3-per-second spike-and-wave. Often triggered by hyperventilation

2) 10 Hz activity in tonic phase and slow waves in clonic phase

3) Epileptogenic focus
Term
What is the first-line anticonvulsant for seizure control in children?
Definition
Phenobarbital. Except Absence, which uses Ethosuxamide (T type CCB) or Valproic acid second line
Term
What is the management of status epileptics?
Definition
1) ABCs, give thiamine, followed by glucose and naloxone

2) IV lorazepam 0.1 mg/kg. Repeat after 5-10 min

3) Phenytoin or Fosphenytoin after 20 minutes
Term
Withdrawal from which agents can cause seizures?
Definition
ABBA

1) Alcohol
2) Benzos
3) Barbs
4) ADEs
Term
What is the classic presentation of BPPV?
Definition
1) Transient, episodic vertigo (< 1min)
2) Nystagmus triggered by changes in head position
3) Perform Dix-Hallpike
Term
What is on your differential for Peripheral Vertigo?
Definition
1) BPPV: episodic lasting < 1 min with nystagmus on position change

2) Vestibular Neuritis/Labrynthitis: acute onset vertigo with gait unsteadiness, N/V and nystagmus.
- VN lacks auditory or aural symptoms (looks like PICA infarction)
- Labrynthitis has Auditory or aural symptoms (looks like AICA infarction)

3) Meniere Disease: Vertigo, tinnitus and low-frequency SNHL with sensation or ear fullness.
Term
What is the treatment for Vestibular neuritis?
Definition
Steroids given < 72 after onset and anti-vertigo agents (Meclizine)
Term
What is the treatment for Menierre Disease?
Definition
1) Acute: Meclizine or bentos and anti-emetics

2) Chronic: Salt restriction, Diuretics Intra-tympanic gentamicin injection for severe unilateral cases
Term
What is the first step in management for a patient with new-onset syncope?
Definition
Rule out cardiac by 1) placing on telemetry or Holder monitor and 2) ECG and troponins
Term
What are the confirmatory diagnostic tests for a patient with diplopia, bulbar dysfunction and proximal muscle weakness?
Definition
Sounds like M. gravis

1) Antibodies (ACh-R, MUSK, LRP-4)
2) Tension test
3) Single fiber EMG
4) Repetitive Nerve stimulation (decremental response)
Term
Which drugs should be avoided in patients with M. gravis? How is an acute attack treated?
Definition
Treat acutely with IVIG or Plasma exchange

- Avoid antibiotics (FQ and ahminoglycosides) and Beta blockers because of effects on NMJ
Term
What is the workup for suspected LES? How is it treated?
Definition
1) Repetitive nerve stimulation test and chest imaging (lung cancer ro)

2) Tumor resection, 3, 4 diaminopyridine or Guanidine

3) If no tumor identified, can use steroids and azathioprine for immunosupression.
Term
Which type of MS has the best prognosis?

How is it treated acutely?
Definition
1) Relapse-remitting (also most common)

2) IV steroids with oral taper
Term
What agents are involved in symptomatic management of MS?
Definition
1) Baclofen for spasticity
2) Anti-cholinergics (Oxybutinin) for Urge incontinence
3) TCA or ADE for painful paresthesias
4) SSRI for depression
Term
1) What is the classic CSF finding for GBS?

2) How is it treated?
Definition
1) Elevated protein (> 55) with normal cell count (Albuminocytologic dissociation)

2) Monitor respiratory status. IVIG or Plasmapheresis
Term
What are the classic imaging findings for the following forms of Dementia?

1) AD
2) Vascular
3) FTD
4) NPH
5) CJD
6) LBD
Definition
1) Diffuse cortical atrophy in temporal and parietal lobes
2) Old infarctions and deep white-matter changes
3) FT atrophy on MRI. Pick bodies (round intraneuronal inclusions) on pathology
4) Ventricular enlargement
5) Increased T2 in putamen and head of caudate. EEG shows sharp wave complexes
6) Lewy bodies on pathology
Term
What chromosome is involved in HD? What available treatments are there?
Definition
1) AD TNR disorder on chromosome 4
2) CT/MRI shows atrophy of caudate and putamen
3) Reserpine or Tetrabenazine can help with chorea and SSRIs for depression
Term
What are the useful drugs in treating PD and what are their SE?
Definition
1) Amantadine for mild symptoms: Ankle edema is SE

2) Carvidopa/Levodopa: Hallucinations, dizziness, agitation

3) Dopamine agonists: Confusion, compulsive gambling, hallucinations

4) Selegiline: Confusion and insomnia

5) COMT inhibitors (entacapone) can increase availability of levodopa to brain

6) Anticholinergics for younger patients with tremor: Dry mouth, blurred vision, constipation, nausea

7) DBS
Term
What are the major primary sites of brain metastasis
Definition
Lung> Breast, Melanoma, Colon
Term
What are the most common CNS tumors in children and adults, respectively?
Definition
1) Adults get meningioma and GBM

2) Kids get Medulloblastoma and Astrocytoma
Term
What type of pediatric brain tumor is GFAP positive?
Definition
Pilocytic atrocytoma: posterior-fossa/infratentorial mass.

Usually has a protracted course
Term
What type of cell gives rise to medulloblastoma in kids?
Definition
Neuroectomdermal. Arises from fourth ventricle or cerebellar vermis and causes increased ICP
Term
Why give steroids in patients with brain tumors?
Definition
Reduces vasogenic edema
Term
What are the defining features of NF-1 and NF-2
Definition
Both autosomal dominant neurocutaneous disorders

Get MRI for both. No cure, but surgery can help.

1) NF-1 (chromosome 17): optic nerve gliomas, ash leaf spots, cafe-aut-lait spots, litchi nodules on eye, ependymomas

2) NF-2 (chromosome 22): bilateral acoustic schwanommas
Term
Infant presents with seizures, hypo pigmented lesions on trunk and mental disabilities.

What other findings are characteristic of this disorder?
Definition
Sounds like Tuberous Sclerosis. AD disorder affecting skin, brain, kidneys and heart

1) Sebaceous adenomas (red nodules on nose and cheeks)
2) Shagreen patch (rough papule in lumbosacral region)

Get MRI to evaluate for subenpendymal giant cell astrocytoma or calcified tubers. Also get Echo, MRI of abdomen and EEG.
Term
What type of injury leads to coma in high-acceleration traumas (such as MVA)
Definition
Diffuse axonal injury: punctate lesions on MRI
Term
How can you distinguish a persistent vegetative state from "locked in syndrome"?
Definition
1) PVS: wakefulness without awareness with normal sleep-wake cycles and no voluntary motor ability

2) Locked in: Wakeful and alert with retained cognitive abilities and voluntary movement of eyes. CPM and brainstem stroke are common causes
Term
What is a headache worsened by darkness troubling for?
Definition
Angle-closure glaucoma (pupillary dilation worsens obstruction of flow)
Term
What is the injury and potential nerve involved? How do you treat?

- Holding arm in slight abduction and external rotation
Definition
Anterior shoulder dislocation: Axillary nerve injury

Reduction with sling and swath. Eventually surgery.
Term
What is the injury? How do you treat?

- Hold arm in adduction and internal rotation in patient recently suffered seizure
Definition
Posterior shoulder dislocation. Reduction with sling and swatch
Term
What is the injury and potential nerve involved? How do you treat?

Direct trauma to arm leading to wrist drop and loss of thumb sensation
Definition
Humerus fracture: Radial nerve

Hanging arm case vs. coaptation splint and sling. Functional bracing
Term
How is an ulnar shaft fracture managed in a patient struck with a night stick?
Definition
Usually requires ORIF
Term
What kind of upper extremity injury occurs after fall on outstretched hand? What nerve is typically involved?
Definition
Colles fracture of distal radius. Also possible scaphoid

Dorsally displaced and orally angulated fracture seen in children and elderly with osteoporosis.

Usually involves median nerve damage and managed with closed reduction
Term
What is the major concern with a scaphoid fracture?
Definition
Avascular necrosis can occur
Term
Which nerve is typically injured in anterior vs. posterior hip dislocation? Which is more common? How are they managed?
Definition
1) Posterior is most common "dashboard injury": Risk of sciatic injury (extension) and AVN.

2) Anterior can damage obturator nerve (adduction, L3)

3) Closed reduction followed by CT
Term
What injury presents as a shortened and externally rotated leg? What is the management?
Definition
1) Hip fracture

2) ORIF with anticoagulation to prevent DVT
Term
What is a major potential complication of femoral fracture? How is it managed?
Definition
Fat emboli: look out for fever, AMS, dyspnea, hypoxia, petechiae and low platelets

Treat with intra-medullary nailing. Irrigate and debride open fractures.
Term
How does management of ACL and PCL injuries differ?
Definition
ACL needs surgical, whereas PCL surgery is only for athletes

Both need MRI for diagnosis
Term
What types of knee injuries occur with twisting and present with "clicking" or "locking"? How are they managed?
Definition
Meniscal tears

- MCL: valgus stress
- LCL: varus stress

Management is operative in young patients with reparable tears or older patients with mechanical symptoms
Term
What is management of Achilles tendon rupture?
Definition
Surgery followed by 6w long-leg cast
Term
Which nerve is associated with each of the following motor/sensory deficits? What are common causes?

1) Wrist drop with sensory loss of dorsal forearm

2) Claw hand, with impaired finger abduction and loss of sensation of palmar and dorsal surface of last 2 fingers

3) Weak wrist flexion and flat thenar eminence with impaired forearm pronation.

4) Loss of arm abduction

5) Loss of foot dorsiflexion/eversion (foot drop)
Definition
1) Radial (C7-8): Humeral fracture, prolonged compression (Saturday night)

2) Ulnar (C8-T1): Elbow dislocation

3) Median (C6-7): Carpal tunnel

4) Axillary: Anterior shoulder dislocation

5) Peroneal: Knee dislocation, fibular trauma
Term
What type of hip injury is associated with:

1) shortened, internally rotated leg
2) shortened, externally rotated leg
3) lengthened, externally rotated leg
Definition
1) Posterior dislocation
2) Fracture
3) Anterior dislocation
Term
What is the appropriate management of carpal tunnel syndrome?
Definition
1) Night splints
2) CS injections into canal
3) Surgical release for refractory
Term
How is bursitis generally managed?
Definition
Conservative is RICE and NSAIDs

CS injections can be considered, but NOT in infection (needs 7-10d antibiotics)
Term
What MSK complication is associated with FQ use?
Definition
Risk of tendon rupture and tendonitis
Term
What is management of patient with presumed human bite injury?
Definition
Surgical irrigation and debridement and IV ABX to cover Eikinella
Term
What type of back pain occurs suddenly, is exacerbated by intra-abdominal pressure and shows straight-leg raise pain?

What is the next step in management?
Definition
Herniated disc (usually L5-S1)

1) Order ESR and radiograph. Get MRI stat is CES is considered or if symptoms are refractory to conservative management.

2) Management is NSAIDs and PT. May use epidural injection.
Term
What type of back pain is associated with radiation to arms or buttocks and legs, and is worse with standing and walking?

What is the next step in management?
Definition
1) Spinal stenosis

2) Radiographs +/- CT/MRI.
- Mild to moderate gets NSAIDs and abdominal strengthening
- Advanced gets CS injections
- Refractory needs surgical laminectomy
Term
Which nerve root is affected in the following cases?

1) Absent foot dorsiflexion
2) Loss of foot eversion and big toe dorsiflexion
3) Loss of plantar flexion or hip extension
Definition
1) L4. Deep perineal nerve. Also may see loss of Patellar reflex and loss of sensation on medial lower leg

2) L5: Superficial peroneal. Loss of sensation on foot and lethal lower leg

3) S1: Loss of achilles reflex, loss of tibial nerve and/or sciatic nerve. Loss of sensation on lateral foot.
Term
What is the most common primary bone malignancy in children? How is it diagnosed and where does it metastasize?
Definition
1) Osteosarcoma

2) Progressive, night pain with constitutional symptoms, "sunburst" appearance

3) Lungs
Term
Which type of primary bone tumor appears as "sunburst," "onion skinning" and "soap bubble" respectively?
Definition
1) Osteosarcoma: goes to lungs
2) Ewing's sarcoma
3) Giant cell
Term
What is the first step is diagnosis of a suspected septic joint?

What is the treatment?
Definition
1) Aspiration: WBC > 80k, + gram stain or fluid culture
- Staph, strep or gram - rods

2) Empirically with IV Cefriaxone and Vancomycin
- If confirmed, surgical debridement necessary
Term
What is on the differential for hyperuricemia?
Definition
1) Increased cell turnover
2) Cyclosporine use
3) Dehydration
4) Diabetes
5) LN syndrome
6) Lead poisoning
7) Salicylates
8) Starvation
Term
What do you think of when you hear "punched out" erosions with overhanging cortical bone? How is this condition managed?
Definition
1) Gout

2) Acutely: NSAIDs, Colchicine (watch out for neutropenia and diarrhea), Steroids 2nd line

3) Chronic: Probenecid (increase elimination), Allopurinol (decrease production)
Term
What medical history might clue you into Psuedogout?
Definition
Hemochromatosis or Hyperparathyroidism

Positively birerefringent, rhomboid shaped crystals affecting wrists and knees
Term
What are the seronegative spondyloarthropathies?
Definition
1) Ankylosing spondylitis
- HLA-B27
- LBP worsens with inactivity and in mornings
- Uveitis and heart block
- Treat with NSAIDs for pain and TNF inhibitors if refractory

2) Reactive (Reiter syndrome)
- Can't see, pee or climb tree
- Arthritis, uveitis, urethritis after infection with chlamydia or others

3) Psoriatic
- Oligoarthritis involving DIPs and sausage-shaped digits (dactylics). Pencil in cup on XR

4) Enteropathic spondylitis
- Sacroiliitis that is asymmetric and associated with IBD.
Term
What type of toxicity is worrisome with Hydroxychloroquine use?
Definition
Retinal Toxicity
Term
What is CREST syndrome?
Definition
Systemic Sclerosis: Anti Scl-70, Anti-Topo
CREST: anti-centromere

1) Calcinosis
2) Raynaud's
3) Esophogeal dysmotility
4) Sclerodactyly
5) Telangiectasia
Term
What are the major organ system complications of Systemic Sclerosis?
Definition
1) Pulmonary Fibrosis
2) Renal failure
3) GI motility issues
4) Malignant hypertension
Term
Match the disease to the antibody.

1) Anti-dsDNA
2) Anti-centromere
3) Anti-histone
4) Antimitochondrial
5) Anti-Sm
6) Anti-smooth muscle
7) Anti-topoisomerase
8) p-ANCA
9) U1RNP antibody
Definition
1) SLE
2) CREST syndrome
3) DI Lupus
4) PBC
5) SLE
6) Autoimmune hepatitis
7) Systemic Sclerosis
8) Microscopic polyangiitis
9) Mixed connective tissue disease
Term
How are each of the following managed in Systemic Sclerosis?

1) Raynaud's
2) Acute flares
3) Renal disease
Definition
1) CCB
2) Steroids (watch out for renal)
3) ACE inhibitors
Term
What disease is associated with Anti-Ro antibodies?
Definition
Neonatal SLE
Term
How is SLE treated?
Definition
1) NSAIDs for mild joint symptoms
2) CS for exacerbations
3) Hydroxychloroquine for isolated skin/joint involvement (watch out for Retinitis)
4) Cyclophosphamide: severe cases of nephritis
Term
What are the major RF for Giant Cell Arteritis?
Definition
1) Polymyalgia Rheumatica
2) Age > 50
3) Female gender
Term
How can you differentiate SLE arthritis from RA?
Definition
Both affect MCP and PIP, but SLE is NON-deforming
Term
How is fibromyalgia treated?
Definition
Anti-depressants (SNRIs) and PT.
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