Step Up To Medicine Quick Hits Flashcards
Workup of Myasthenia Gravis ?
AcH Ab test: If positive
EMG: decremental response to repetitive stim
CT: of Thorax to rule out thymoma
Edrophonium ( Tensilon Test ): Trial of Ach Medication.
Treatment of Myasthenia Gravis
- Pyridostigmine: Ach Inhibitor
- Thymectomy: Can be beneficial even if no adenoma. If there is an adenoma it is an indication for surgery
- Immuno-supression: Corticosteroids azoth
- IVIG and Plasmapheresis
Vertigo tinnitus and hearing loss
Meniere’s Disease.
Treatment: Na restriction and diuretics
Vertigo with head movements
BPV
Treat with Mezclizine.
Focal neurologic exam, Bidirectional Nystagmus, Responds to tilt test every time without refractory period.
Central Vertigo, Get brainstem MRI, Eval for CV risk factors.
Syncope, you suspect vasovagal. Best Test ?
ECG / RO structural heart disease + Tilt Table Test.
Treat with Beta blockers or Disopyramide.
How can you differentiate syncope from seizures ?
In syncopal episodes bowel and bladder fx will be retained. Also the LOC will be very brief.
Syncope with exertion
Hypertrophic Cardiomyopathy or Aortic Stenosis.
Main goal with working up syncope ?
Rule out cardiac cause.
Simple vs generalized seizures
Simple originate in one area of the brain.
Simple Partial
Consciousness remains intact, originates in a focal area of the brain
Simple complex
Origionates in a focal area of the brain, consciousness is lost.
Generalized
Electrical activity to the entire brain is interrupted.
Petite Mal
Absence Seizure
Grand Mal
Tonic-Clonic
Status Epilepticus Treatment
Airway, IV Diazepam, IV Phenytoin, 50g Dextrose
Tonic Clonic and partial seizures
Phenytoin and Carbamazepine
Absence Seizures
Ethosuxamide and Valproic Acid.
MCC aphasia
cerebrovascular disease. If speech is fluent lesion is posterior to central sulcus. If speech is not fluent lesion is anterior to central sulcus.
DD of facial Palsy
Trauma: Temporal bone / Forceps Delivery Lyme Disease: NO STEROIDS Tumor: Acoustic Neuroma Guillain-Barre: Bilateral Herpes Zoster
Workup of Trigeminal Neuralgia
Clinical, bursts of intense pain. MRI to rule out CP angle tumor
Treat with Carbamazepine.
Lung tumor that presents with horners syndrome ?
Pancoast Tumor
Facial Fullness, Facial and arm edema
Superior Vena Cava syndrome
Pleural Fluid with elevated amylase
Esophageal rupture, pancreatitis, malignancy
Pleural Fluid milky, opaque,
Chylothorax: Lymph fluid in pleural space.
Pleural fluid with frank pus
Empyema
Pleural Fluid with pH
Parapneumonic effusion / empyema
Pleural Fluid is transadate or exudate ?
One Criteria must me met to be exudative.
Protein (Pleural) / Protein (serous) = > 0.5
LDH (Pleural) / LDH (serum) = > 0.6
LDH is greater than upper 2/3 of serum LDH.
Workup of Sarcoid ?
Treatment?
CXR: Hilar Adenopathy
Transbronchial Bx: Noncaseating Granuloma
Treat with systemic corticosteroids or mtx.
pANCA
Churgg Strauss (asthma) / Goodpasteurs (Anti-GBM)
Pleural Plaques
Asbestos, risk of bronchogenic carcinoma
Egg shell calcifications
Silicosis.
Hypoxia
PaO2 50
Hypercapnea
PaCO@ >50
Pathophysiology of ARDS
Massive intrapulmonary shunting (Widespread atelectus)`
Currant Jelly Sputum or thick mucoid capsule.
Klibsella Pneumonia.
Bleeding esophageal varicies in an alcoholic
ABC’s then stabilize the patient, Check for clotting deficiencies, (FFP + Vit K)
If no bleeding history use Beta Blockers.
Prospective study will show you ?
Incidence and Relative Risk
Retrospective Study will show you ?
Odds Ratio