UWorld Flashcards
What is the long term therapy for patients with Crytococcus meningitis?
Fluconazole
Treatment for cyrptococcus meningitis?
Amphotericin and Flyucytosine
What are the causes of a pleural effusion?
- Infection
- Malignancy
- PE
- connective tissue disease
- iatrogenic
Light’s criteria?
- Fluid to serum protein ration >0.5
- Fluid to serum LDH ratio >0.6
- Fluid LDH greater than >2/3 upper limit for serum LDH
Enlarged central pulmonary arteries may be a sign of what?
Cor Pulmonale
A holosystolic murmur at the L lower sternal border is what?
Tricuspid regurg,
May here in cor pulmonale because of pulmonary hypertension, so blood flows back into R ventricle from the pulmonary arteries, during systole (makes sense because this is when blood would enter the pulmonary arteries most forcefully which is what will cause the murmur)
How does cor pulmonale affect P2 heart sound?
Louder
What is Beck’s triad?
Tamponade: hypotension, elevated JVP, muffled heart sounds
What are the 5 toxicities of amiodarone?
- pulmonary toxicity
- hepatotoxicity
- thyroid dysfunction (mostly hypothyroid) (amiodarone has a lot of iodine in it)
- corneal deposits
- skin changes
How differentiate viral myocarditis from cardiac tamponade?
Both can have recent URI, fatigue, dyspnea and elevated JVP
Myocarditis: typically have pulmonary vascular congestion and audible S3
Track marks, cavitary lesions on lung imaging and h/o IV drug use—Dx?
Septic emboli (most likely S. Aureus) from infective endocarditis
Serum calcium correction formula?
= measured Ca + 0.8 (4-measured albumin)
pt with HIV with an infection that sounds like UC?
CMV
Cause of muscle weakness after and asthma attack?
B2 agonist drive K into cells
can cause clinically significant arrhythmias, muscle weakness and EKG changes
ATII preferentially constricts AFF or EFF arteriole?
EFF
How does hematuria at the beginning or end of urine stream clue you in to where in the anatomy you may find pathology?
Early in stream: urethra
Late: bladder or prostate
Mgmt of pt with acute pancreatitis with a history of gallstones?
Cholecystectomy
lethargy, hypogonadism, arthropathy and diabetes are suggestive of what dx?
hemochromatosis
Sudden loss of vision and onset of floaters, dx? #1 cause?
vitreous hemorrhage #1 cause: diabetes
What does factorial design involve?
randomization to different interventions with additional study of 2 or more variables
What are the main components of Wegener’s
- systemic vasculitis
- upper and lower airway granulomatous inflammation
- glomerulonephritis
*destruction of nasal cartilage and ulcers are common manifestations
Treatment of Wegener’s
cyclophosphamide
Labs in Wegener’s
C-ANCA
- RBC casts, proteinuria and sterile pyuria
- elevated CRP
Ring shaped scaly patches with central clearing and distinct borders - dx?
tinea corporis