uworld Flashcards
(734 cards)
Parenteral nutrition can provide total nutrition directly into the blood stream of patient’s who are unable to receive enteral nutrition. what is a common and serious complication?
Because it must be administered through a central venous catheter when given for >48 hrs there is risk of central line-associated bloodstream infection.
Pt with CP, signs of decreased cardiac output, and pulsus paradoxus following viral infection most likely have what resulting in what arrhythmia?
likely pericarditis resulting in cardiac tamponade
may not have any murmur and lungs remain clear.
CSF findings in HSV encephalitis?
Usually nonspecific; however classic findings are lymphocytic pleocytosis, elevated protein, elevated RBC count, and normal glucose.
the CSF RBC elevation is the result of hemorrhagic destruction of frontotemporal lobes
what will you see on spirometry of someone with ILD? specifically in regards to FEV, FEV1, and ratio?
decrease in both FEV and FEV1 with normal ratio.
pts usually have hx of smoking, and you often hear fine bibasilar “crackles” (velcro like) on exam
pt has HTN and hyperpigmentation associated with a mediastinal mass which suggests pulmonary malignancy with ectopic production of what?
ACTH
this is a polypeptide hormone - common with small cell lung cancer
pt will have manifestations of severe hypercortisolism including wide purple striae, fatigue, easy bruising, proximal muscle weakness, and central obesity (although hypermetabolic state associated with the malignancy may cause weight loss)
Describe light criteria for pleaural effusions (transudate vs exudate)
Trans: Protein less than or equal to 0.5 and LDH = 0.6 (pleural/serum), LDH is = 2/3 upper limit of normal serum LDH.
Ex: pleural/serum protein ratio >0.5 and LDH >0.6, pleural LDH > 2/3 upper limit of normal serum LDH
Common causes of trans are hypoalbuminemia (cirrhosis, nephrotic syndrome) and CHF. For Exudate think Infection (parapneumonic, TB, fungal, empyema), malignancy, and PE
What color is described with a chylothorax?
Milky white
vaccines for adults with HIV?
HAV, HBV, HPV, Influenza (inactivated), Meningococcus, Pneumococcus, Tdap
Lung malignancy pt with headache, facial swelling, and JVD without peripheral edema makes you think?
Sperior vena cava syndrome. Primary treatment is radiation therapy as a palliative measure
Measures to prevent aspiration pneumonia in hospitalized pt includes…?
why not ng tube?
oral care
diet modification for pt with dysphagia, and compensatory techniques like elevated the head of the bed to 30-45 degrees
jejunal feeding reduces risk of aspiration but simple ng or percutaneous endoscopic gastrostomy tibes predispose to aspiration pneumonia
how is SBP thought to develop? where does the infection come from?
typical treatment?
Enteric bacteria are thought to translocate across the intestinal wall and seed ascitic fluid within the peritoneal cavity.
treatment typicaly IV abx (3rd gen cephalosporins, flouroquinolones)
NOTE mental status changes common in SBP
Bullous pemphigoid vs pemphigus culgaris - which has tense vs flaccid which is hemi and which is des?
BP is hemides with tense blisters
PV is desomosomes with flaccid (usually involvement of the oral cavity too.) will not typically see ANY intact blisters because skin is so fragile.
Proximal muscle weakness (eg difficulty climbing up stairs) and pain is mild to absent with elevated muscle enzymes (CK, aldolase, AST) makes you think?
Polymyositis
confirm dx with ANA, anti-Jo-1 and biopsy showing endomysial infiltrate with patchy necrosis
Age >50, systemic signs/symptoms, stiffness > pain in shoulders hip girdle and neck, associated with giant cell arteritis makes you think?
Polymyalgia rheumatica
will see elevated ESR, CRP and rapid improvement with gluccocorticoids
combo of UMN and LMN signs is characteristic of what disease (sensation is usually intact)
ALS
Absence seizures usually occur in children but what do you think of in an adult with staring spells (and maybe automatisms like lip smacking or chewing)
these would be complex partial seizures (complex due to LOC and partial involving local area of brain
may also experience postictal state or todd paralysis after
recommended initial treatment for stable Vtach?
amiodarone
pt presents with weakness and leg cramps after initiation of thiazide diuretic suggests?
significant hypokalemia
in setting of persistent HTN think Primary hyperaldosteronism
can manage with aldo antagonists like spironolactone or eplerenone.
pt with sudden onset cholicy abdominal pain associated with eating after recent Roux-en-Y makes you think?
rapid weight loss induced gallstones with possible cholecystitis.
differences in post strep GN vs IgA nephropathy?
bacterial vs viral and delayed vs early onset of sx’s
Pt with hypocalcemia dn hyperphosphatemia in setting of CKD has typical presentation of ?
Secondary hyperparathyroidism
decreased production of VitD due to CKD leads to decreased absorption of calcium in gut. As GFR decreases kidney cant get rid of phosphate. increased phosphate binds up the circulating calcium which stimulates release of PTH which leads to parathyroid hyperplasia
what would you prescribe to a pt with neurogenic bladder?
a cholinergic agonist. (bethanechol) to aid in bladder contraction and urethral relaxation.
muscarinics are for urge incontinence (detrusor overactivity) and relax bladder
pelvic floor exercises for stress incontinence
Precipitating factors for Hepatic Encephalopathy?
Drugs (sedativesm narcs) Hypovolemia (diarrhea) Elecctrolyte changes (hypokalemia) Increased nitrogen load (GI bleed) Infection (PNA, UTI, SBP) Portosystemic shunting (TIPS)
what is restrictive cardiomyopathy?
often caused by myocardial infiltrative diseases such as amyloidosis, sarcoidosis, or hemachromatosis