Internal Medicine Flashcards
Symptoms of Polymyalgia Rheumatica
> Age >50
bilateral pain and morning stiffness > 1 month
involvement of 2 of the following: neck or torso, shoulders or proximal arms, proximal thigh/hip, constitutional symptoms
Labs for polymyalgia rheumatica
- ESR > 40
- Elevated CRP
- Normocytic anemia possible
- ~20% can have normal labs
Treatment for Polymyalgia rheumatica
low-dose glucocorticoids (NSAIDs for mild breakthrough pain while tapering steroids)
Clinical findings of HIV-associated nephropathy
> heavy proteinuria
rapidly progressive renal failure
renal biopsy showing collapsing focal segmental glomerulosclerosis
edema
What is being measured when performing an inspiratory hold on a pt on a vent?
Pulmonary compliance
What pathologies are associated with increased peak pressure and normal plateau pressure?
> bronchospasm
mucus plug
biting endotracheal tube
(These are causing increased airway resistance)
What pathologies associated with increased peak and plateau pressure?
>pneumothorax >pulmonary edema >pneumonia >atelectasis >right mainstem intubation (These reduce lung compliance)
How to measure auto-PEEP in a pt with obstructive lung disease?
end-expiration hold maneuver
Management of frostbite
> rapid rewarming in water bath
analgesia and wound care
angio or tech-99m scan to assess for thrombosis if rewarming unsuccessful
thrombolysis in severe, limb-threatening cases
Clinical symptoms of Chikungunya virus infection
> Pt visits Caribbean, central/south America, Africa, Asia
3-7 day incubation
high fever and severe polyarthralgia (almost always present)
headaches myalgia, conjunctivitis, maculopapular rash
Lymphopenia, thrombocytopenia, transaminitis
What screening should pts receive who are about to start Trastuzumab?
Baseline assessment of cardiac function by echocardiography
How does hepatorenal syndrome lead to renal dysfunction?
It causes splanchnic arterial dilation leading to renal vasoconstriction with decreased perfusion and GFR
Clinical findings of hepatorenal syndrome?
> significant decrease in GFR in the absence of another cause of renal dysfunction
minimal hematuria (<50)
lack of improvement with volume resuscitation
Treatment for hepatorenal syndrome
> address precipitating factors
splanchnic vasoconstrictors (midodrine, octreotide, NE)
liver transplant
Imaging test of choice for Hodgkin lymphoma
PET scan with 18-fluorodeoxyglucose (FDG)
will pool in healthy organs with high glucose needs like the brain, kidney, and liver. Cleared in urine so will pool in GU system so don’t get confused by that
Medications used for gastroparesis
> metoclopramide (extrapyramidal symptoms and tardive)
erythromycin (tachyphylaxis)
domperidone (cardiac arrythmias, QT prolongation, hyperprolactinemia)
First line therapy for renal artery stenosis (RAS)
ACE/ARBs are first line due to their ability to reduce angiotensin II levels, which improves systemic blood pressure and dilated the efferent arterioles (increases GFR)
Clinical findings of multifocal atrial tachycardia (3)
> typically, asymptomatic
rapid, irregular pulse
EKG: >3 P-wave forms, atrial rate >100/min, and irregular RR intervals
Treatment of multifocal atrial tachycardia
> correct the underlying disturbance
>AV nodal blockade (verapamil (CCB)) if persistent
What antibody is seen in PBC
anti-mitochondrial
What characterizes acute liver failure? (3)
> LFTs >1000
hepatic encephalopathy
synthetic liver dysfunction (prolonged PT and INR>1.5)
When is liver transplant required in pt with ALF?
> grade 3 or 4 hepatic encephalopathy
PT >100 seconds
serum creatinine >3.4
Clinical findings in pt with Meniere disease (3)
> recurrent episodes last 20 minutes to several hours
sensorineural hearing loss
tinnitus and/or feeling of fullness in ear
Clinical findings in pt with vestibular neuritis (3)
> acute, single episode that can last days
often follows viral syndrome
abnormal head thrust test
What is the cause of aplastic anemia?
bone marrow failure caused by damage to multipotent hematopoietic stem cells
How does vWF contribute to hemostasis? (2)
> aids in platelet-endothelial binding and platelet aggregation
carrier protein for factor VIII
Clinical features of paroxysmal nocturnal hemoglobinuria (3)
> hemolysis leadings to fatigue
cytopenia
venous thrombosis (intrabdominal, cerebral veins)
Treatment for paroxysmal nocturnal hemoglobinuria
> iron and folate supplements
>eculizumab (inhibits complement activation)
What test is used to confirm diagnosis of paroxysmal nocturnal hemoglobinuria?
flow cytometry to assess for the absence of the CD55 and CD59 proteins on the surface of the RBCs
Lab finds in pt with Beta cell tumor
> Increased insulin levels with low blood glucose
elevated C-peptide levels
proinsulin levels greater than 5pmol/L
What is the best index to monitor the response of treatment in a pt with DKA?
serum anion gap
Adverse effects of calcineurin inhibitors (tacrolimus, cyclosporine)
> vasoconstrictive properties
hepatically cleared so P450 altering drugs can lead to adverse effects
presents with HTN and prerenal acute kidney injury
How is subclavian steal syndrome diagnosed?
Doppler US or MR angio
What diseases are associated with erythema nodosum?
>strep infection >sarcoidosis >TB >endemic fungal disease (eg, histo) >IBD >Bechet disease
What is a confounder?
extraneous factor that has properties linking it with both the exposure and the outcome of interest
What is the most common valvular abnormality detected in pts with IE?
mitral valve prolapse/regurgitation
Characteristic findings of pseudogout
> onset at age >65
monoarticular arthritis
chondrocalcinosis
Clinical signs of erysipelas
> acute onset of systemic symptoms
regional lymphadenitis
warm, tender, erythematous rash with raised, sharply demarcated borders
***involvement of the ear is suggestive of erysipelas since this skin lacks a lower dermis level
Most common organism involved in erysipelas
Group A strep
Treatment of erysipelas
> IV abx (ceftriaxone, cefazolin) if systemic symptoms
>Oral abx (amoxicillin) if no systemic symptoms
Clinical features of herpetic keratitis
> branched dendritic ulcerations
decreased corneal sensation
watery discharge
recurrent episodes
Clinical features of bacterial keratitis
> central, round ulcer
stromal abscess
mucopurulent discharge
acute presentation
Clinical features of fungal keratitis
> ulcerations with feathery margins and satellite lesions
mucopurulent discharge
indolent course
What is the most important factor for survival in a pt with sudden cardiac arrest?
Time to rhythm analysis and defibrillation if indicated
Hyperkalemic RTA is commonly seen in what pts?
elderly patients who have poorly controlled diabetes with damage to the juxtaglomerular apparatus, which causes a state of hyporeninemic hypoaldosteronism
Renal vein thrombosis is most commonly seen with what kidney disease?
membranous glomerulopathy (causes loss of antithrombin III)
Microcytic anemias. How does ferritin level relate to pathology?
> low = iron deficiency
normal = thalassemia
high = anemia of chronic disease or lead poisoning
Children and adults. What type of hemangioma do they get?
> adults get cherry (cherry in a drink)
> kids strawberry (strawberry patch kid)
Alarm features of IBS (9)
>older age (>50) >GI bleed >nocturnal diarrhea >worsening pain >weight loss >iron deficiency >elevated CRP > (+) fecal lactoferrin or calprotectin >family history of early colon cancer or IBD
Clinical symptoms of transverse myelitis
> motor weakness that progresses from flaccid to spastic
autonomic dysfunction including bowel/bladder incontinence
sensory dysfunction including pain, paresthesia, or numbness with a distinct sensory level
How to distinguish hypertrophic cardiomyopathy from athlete’s heart
>HCOM has weird EKG findings >HCOM has enlarged left atrium >HCOM LV wall will be >15mm >HCOM focal septal hypertrophy >HCOM LV diastolic function impaired
Treatment for Guillain-Barre syndrome
> monitor of autonomic and respiratory function
>IVIG or plasmapheresis
What is the way they describe livedo reticularis in questions and what is it associated with?
painless, purple mottling of the skin (usually b/l LE or lower back)
cholesterol emboli
Pts taking isoniazid require supplementation with what?
pyridoxine (vit B6)
What will you see on echo and biopsy in a pt with viral myocarditis?
Echo: 4-chamber dilation with diffuse hypokinesis
Biopsy: lymphocytic infiltration, viral DNA or RNA
Electrical issues in what part of the heart lead to Atrial Flutter?
tricuspid annulus (don’t mix up with A fib which is from the pulmonary veins)
Treatment for uric acid stones
alkalinization of urine (potassium citrate)
Major risk factors for uric acid stones (4)
> gout
DM/metabolic syndrome
increased production of uric acid (hemolysis, MP disorders)
chronic diarrhea (due to loss of bicarb)
Pts with untreated hyperthyroidism can go on to develop what?
> Bone loss leading to osteoporosis and increased risk of fracture
also increased risk of cardiac tachyarrhythmias
Why do pts with sepsis develop hypoglycemia?
Increased use of glucose in the tissues, which is promoted by inflammatory cytokines
*Can also suppress gluconeogenesis
What can be observed in a pt with brain death?
DTRs because they originate in the spinal cord
Anterior uveitis can be associated with what diseases?
> certain infections
sarcoidosis
spondyloarthritis
IBD
How is anterior uveitis characterized?
painful, red eye associated with photophobia, tearing, and diminished visual acuity
Brown granular casts are associated with what renal issue?
Acute tubular necrosis
WBC casts are associated with what kidney issue?
Acute interstial nephritis
What is the classic triad of hereditary spherocytosis?
hemolytic anemia, jaundice, and splenomegaly
What is wrong in a pt with hereditary spherocytosis?
RBC scaffolding proteins (spectrin, ankyrin) are deficient
What three things may a pt with hereditary spherocytosis require?
> cholecystectomy
folate supplementation
splenectomy (give vaccines as well if this happens)
What is the classic pentad of TTP?
>thrombocytopenia >MAHA >renal insufficiency >neurologic changes >fever
What is the best recommendation to prevent calcium stones?
Reduced sodium diet
Symptoms of Takayasu arteritis (3)
> constitutional
arterioocclusive in upper extremities
arthralgia/myalgias
**Distinguish this from coarctation with the systemic symptoms
What lab finding can be seen in a pt with obesity hypoventilation syndrome?
Decreased chloride due to bicarb retention
**Excreting chloride in the urine to reabsorb bicarb. Bicarb used to create metabolic alkalosis to compensate for respiratory acidosis
What imaging is used to diagnose fibromuscular dysplasia (FMD)?
CT angio of the abdomen
**If inconclusive then catheter based digital subtraction arteriography can be used
Adrenal vein sampling is used to distinguish between what two things?
> adrenal hyperplasia and adenoma
**Aldosterone/renin ratio will be >20
What is the cause of infertility in a pt with Klinefelter syndrome?
testicular fibrosis with seminiferous tubule dysgenesis
Clinical symptoms of idiopathic hypogonadotropic hypogonadism (Kallmann syndrome)
> anosmia (loss of smell)
>congenital abnormalities (cleft palate, skeletal abnormalities)
What is a common cause of constrictive pericarditis in developing or endemic area?
TB (Africa, India, China)
**USA MCC are idiopathic or viral (40%), radiation therapy (30%), cardiac surgery (20%), and connective tissue disorders
What medications are given to a pt with ACS due to unstable angina
>antiplatelets >anticoagulants >beta blockers >high-intensity statins >nitrates as needed
What is one of the earliest findings in macular degeneration?
Distortion of straight lines such that they appear wavy (perform grid test to rule this out)
**Drusen deposits in the macula are also common lesions seen
Infectious mono typically appears with what findings? (5)
>prolonged fever >malaise >exudative pharyngitis >splenomegaly >generalized lymphadenopathy
Metoclopramide and prochlorperazine are what class of drug?
dopamine antagonists
**Can lead to EPS
MSK risk in pts with RA
osteopenia/osteoporosis
What is the time frame onset in pts experience delayed hemolytic transfusion reaction?
> 24 hours and up to a month after transfusion
**B cell antibody response to minor antigens in transfused blood
Warfarin affects what clotting and anticoagulant factors?
factors 2, 7, 9, 10
Protein C and S (these go first though)
Classic triad of dialysis-related amyloidosis
> scapulohumeral periarthritis
carpal tunnel syndrome
bone cysts
What will the calcium level be in pts with humoral hypercalcemia of malignancy (HHM)?
> 14mg/dL
*** Look for pt with smoking history, likely has squamous cell producing PTHrP
What will the calcium levels be in a pt with HCTZ induced hypercalcemia?
<12mg/dL
**use this to distinguish between this and hypercalcemia of malignancy (>14)
What is the most common side effect of hydroxyurea?
> myelosuppression
**neutropenia, anemia, thrombocytopenia
Lab findings in a pt with adrenal insufficiency
> renal sodium wasting and potassium retention leading to hypotension/orthostasis
reduced cortisol production causing constitutional symptoms and hypoglycemia
eosinophilia due to reduced migration into tissues secondary to reduced cortisol
What test should be performed to check for adrenal insufficiency?
cosyntropin stimulation test (synthetic form of ACTH)
What should be avoided in pts with premature atrial complexes?
> tobacco
alcohol
caffeine
stress
What should be given in an agitated pt with delirium?
low-dose haloperidol
**can also use quetiapine, risperidone
Clinical features of Wernicke Encephalopathy (3)
> encephalopathy
oculomotor dysfunction (horizontal nystagmus and b/l abducens palsy)
postural and gait ataxia
What is the timeframe of acute renal allograft rejection?
most commonly occurs within the first 6 months following transplant
**T cell mediated
What will biopsy show in acute renal allograft rejection?
lymphocytic infiltration of the intima with inflammatory tubular disruption
**T cell mediated
How will BK virus reactivation appear on renal biopsy?
intranuclear inclusion and a mixed lymphocytic and neutrophilic infiltrate
Medical management for ascites (3)
> spironolactone with furosemide
alcohol abstinence, sodium restriction
avoid ACE/ARBs and NSAIDs
Why does beta blocker overdose lead to hypoglycemia?
> beta blockers act as competitive antagonists to catecholamines –> prevents catecholamines from inducing hepatic glucose production and glycogen breakdown
First line treatment for beta blocker overdose
> IV fluids
atropine
glucagon
Symptoms of crypto in pts with AIDS (CD4 <180)
> SEVERE WATERY DIARRHEA
low-grade fever
weight loss
Symptoms of microsporidium/isosporidium in pts with AIDS (CD4 <100)
> watery diarrhea
crampy abdominal pain
weight loss
FEVER IS RARE