UW mix 1 Flashcards
Pathobiology of Goodpasture’s dz
antibodies to alpha 3 chain of type IV collagen (glomerular and alveolar BM) - kidney bx see linear IgG deposition
Sx in Invasive Aspergillosis
hemoptysis, pleuritic chest pain, and fever
Imaging of invasive aspergillosis
nodules with halo sign surrounding ground glass opacities
Incidental finding of 1.5 cm lung nodule/opacity on CXR - what to do next?
Look up old films! Then get CT.
Low prob - serial CT
Intermed prob - PET
High prob - excise
Presentation of amniotic fluid embolism? Tx?
Cardiogenic shock, hypoxemic respiratory failure, DIC, coma or seizure. Tx: respiratory and hemodynamic support +/- transfusion.
Risks: advanced maternal age, G>5, C section, preeclampsia, placenta previa or abruption
Presentation and tx of eclamptic seizures
Seizures w/ hypertension. Give Magnesium sulfate.
Patient has weakness after asthma attack - why?
Treated with b2 agonists - drives K+ into cells, get hypokalemia - weakness, arrhythmia, and EKG changes. B2 agonists also get tremor, palpitations, headache.
What happens in asthma w/ GERD
Commonly comorbid. GERD causes microaspiration and can increase vagal tone and bronchial reactivity.
Tx of PE in patient with CKD? What can’t you use?
Unfractionated heparin - monitor with aPTT. Dont use enoxaparin, fondaparinux, or rivaroxaban (Xa levels would build up)
What is the step up tx pattern for asthma?
Rescue SABA, low dose ICS, low dose ICS + LABA, up doses of ICS + LABA, maybe adjuncts, last is oral corticosteroid
Do you use ipratropium in asthma?
Not typically; used in COPD
What is contraindicated as a monotherapy in asthma?
LABA. Only use in combination with an ICS.
How to treat anaphylaxis? Mode of delivery?
IM epinephrine (IV only if failed IM, has more SEs); adjuncts like antihistamines (help skin sx) and glucocorticoids (act slowly but can prevent relapse); airway support
pH of pleural effusion - transudative? exudative?
Trans - 7.44-7.55 (nml 7.6)
Exudate - 7.30-7.45
Causes of low pleural fluid glucose?
complicated parapneumonic effusion, malignancy, tb, RA
Main findings in granulomatosis with polyangiitis
Wegener’s - 30-50yo white
- upper and lower respiratory tract granulomatous inflammation (chronic sinusitis, otitis, lung nodules, tracheal narrowing with ulcers) and glomerulonephritis
what symptom might acetylcysteine treat?
it’s a mucolytic - but may increase risk bronchospasm in COPD exacerbation
When would you use inhaled corticosteroid (like fluticasone)?
long-term management of persistent asthma. don’t help in COPD exacerbation. Maybe helpful in reducing exacerbation frequency.
What inhaler to give in a COPD exacerbation?
inhaled bronchodilators - B2 agonist and anticholinergic
In malnutrition causing macrocytic anemia, which vitamin deficiency usually comes first? And why?
Folate deficiency - folate has much smaller stores. Lots of B12 stores - takes years to develop deficiency, usually.
- That’s why we give FOLATE to pregnant women, because the stores are that much smaller!
Cushing syndrome, way to remember, and causes
high urine cortisol 24hr. cushing like cushion (Face, central adiposity); adrenocortical adenoma, hyperplasia
Why are NSAIDs bad in kidney disease?
constrict afferent arteriole
What to do with patient with tachycardia to 240, young, BP 65/37?
Cardiovert! Any arrhythmia with hemodynamic instability.
signs someone is unstable during arrhythmia and needs cardioversion
hypotension, AMS, signs of shock, ischemic chest discomfort, acute heart failure
when would you defibrillate?
v fib or pulseless v tach
- this is unsynchronized, high energy
arrhythmia seen in digitalis toxicity?
atrial tachycardia with AV block (one of the few times to see ectopy at same time as AV block)
megacolon (or megaesophagus) + heart disease is?
Chagas. Chronic protozoal disease caused by Trypanosoma cruzi. Common in Latin America.
Focal GI dilation from destruction of nerves
Most common cause of a liver mass?
Metastatic disease.
Common presentation of cholangiocarcinoma? And usually had this disease previously?
Sx of biliary obstruction - jaundice, pruritus, light stools, dark urine. Had primary sclerosing cholangitis.
What is PCWP a measure of?
LA pressure - and LV end diastolic pressure
In septic shock, what happens to cardiac index? SVR? MvO2?
Increase CI
Decreased SVR
INCREASED MvO2 due to hyperdynamic circulation (can’t use it fast enough!)
alcoholic cirrhosis - describe typical liver size and enzymes?
shrunken, not palpable. AST:ALT > 2:1
hemochromatosis - mild or significant transaminitis?
significant
Key to good outcomes in out of hospital sudden cardiac arrest?
Time to Effective CPR, and time to rhythm analysis and defibrillation. Usually from sustained v tach or v fib, probably from MI.
(Studies show better effectiveness of compression only CPR for bystanders)
When do you use epinephrine in ACLS?
Asystole, PEA (pulseless electrical activity), or refractory ventricular arrhythmias unresponsive to defibrillation
When do you see pulsus paradoxus and why?
Fall in SBP by more than 10 mmhg during inspiration. See in cardiac tamponade or restrictive pericarditis. Or asthma or COPD (drops in intrathoracic pressure a lot more, blood pools in pulmonary vasculature)
Sudden onset chest and neck pain in Marfan’s?
Aortic dissection - worry about regurgitation and associated murmur, too
Toxicity of high doses (or long tx with) nitroprusside?
Cyanide toxicity (when high doses given for hypertensive emergency). Particularly in renal insufficiency. See AMS, lactic acidosis, seizure, and coma. - Nitroprusside as parenteral vasodilator, quick onset and offset. Metabolism releases NO and CN- ions. The NO causes arteriolar and venous dilation
Causes of unconjugated hyperbilirubinemia - including genetic
Hemolysis, overproduction, reduced uptake (TIPS), and Gilbert’s (low UDP glucuronyltransferase)
Causes of conjugated hyperbilirubinemia - including genetic
problems in liver (high AST and ALT - think hemochromatosis or hepatitis)
- problems in biliary tract (high alk phos - think cholestasis, malignant biliary obstruction maybe from pancreas, cholangiocarcinoma) - primary biliary sclerosis, primary sclerosing cholangitis, or choledocholithiasis
- Normal transaminases: Rotor’s (the motor rotor to push out the bili is broken) or Dubin Johnson
Physiology and symptoms of Wilson’s disease
Mutation in ATP7B - hepatic copper accumulation - leaks and goes to basal ganglia, cornea, etc
Get liver failure, neuro (parkinsonism, gait, dysarthria), and psych (depression, personality change)
Dx and tx for wilson’s disease
Dx: low ceruloplasmin, KF rings, more copper on liver biopsy
Tx: Chelators like d-penicillamine and trientine; or zinc (interfers w/ copper absorption)
transient monocular vision loss in 30yo?
Amaurosis fugax - disorders anterior to the optic chiasm
Fibromuscular dysplasia
Noninflammatory, nonatheroscloerotic - cause involvement in carotid artery, renal artery, and vertebrals.
Renin and aldosterone levels in primary hyperaldosteroneism
High aldosterone - this suppresses renin, so have aldosterone/renin ratio >20
What is dexamethasone suppression for?
Cushing’s (central obesity and moon facies like a cushion, purple striae, proximal mm wasting, glucose intolerance and hypertension
drugs to hold before a cardiac stress test
b blocker, CCB, nitrate; day of don’t use caffeine
Name an ultra short acting b blocker
esmolol
Classic triad in renal cell carcinoma
hematuria, abdominal mass, flank pain (contrast enhancing lesion on CT)
How to diagnose Boerhaave’s
Transmural esophageal rupture - get CT or contrast esophagography with gastrographin. CXR may show wide mediastinum with pleural effusion (L) - effusion with low pH and high amylase
Most common cause of sudden cardiac arrest post acute MI?
Reentrant ventricular arrhythmia! ( v fib) - also common are PVCs and sustained or nonsustained v tach. And re-entry is the most common mechanism for these arrhythmias.
What is orthodeoxia
decreased o2 sats while upright- often seen with platyptnea - increased dyspnea while upright. See in setting of hepatopulmonary syndrome - intrapulmonary vascular dilations in setting of chronic liver dz. Essentially shunts through areas with poor oxygen perfusion.