MKSAP: Medicine Flashcards
PIP and DIP: OA or RA?
- PIP = RA
- DIP = OA
Leukocyte count in synovial fluid of: OA? Gout & pseudogout? Septic arthritis?
- OA = < 2,000
- Gout & pseudogout = 2,000 - 50,000
- Septic arthritis = > 50,000
What are postmetopausal women who use diuretics at an increased risk for?
-tophaceous gout of the DIP joints
Typical pt with patellofemoral pain syndrome?
-young active woman with anterior knee pain that is worsened by going down steps
Best screening test for pts with suspected hemochromatosis?
-transferrin saturation measurement
What 2 physical exam tests can be used to dx a meniscal tear?
- Pain along the joint line –> 76% sensitive
2. McMurray test –> 97% specific
2 most common cause of nongonococcal septic arthritis in adukts?
- gram-positive bacteria:
1. Strep
2. Staph aureus –> most common
Typical presentation of vasculitic neuropathies?
-acute onset of asymmetrical weakness and sensory loss with severe pain
Typical age of onset of polymyalgia rheumatica?
> 50 yrs
Aa
Aa
3 Ssx of polymyalgia rheumatica?
- Pain and morning stiffness in axial joints and proximal muscles
- No evidence of joint inflammation or muscle weakness
- Elevated sed rate
What is calcifications of cartilage pathognomonic for?
- pseudogout (AKA: calcium pyrophosphate deposition dz)
- esp in fibrocartilage of knee meniscus, symphysis of the pubis, glenoid and acetabular labra, and the triangular cartilage of wrist
Tx for polymyalgia rheumatica?
-corticosteroids
Aside from “bronze diabetes” what are 4 Ssx of hemachromatosis?
- Abnormal liver chemistries
- Arthropathy
- Fatigue
- Impotence
Tx for patellofemoral pain syndrome?
- rest
- NSAIDs
Ottawa Knee rules for obtaining an xray in a pt with acute knee pain (4)?
- Pt > 55 yrs old
- Tenderness in the head of the fibula or patella
- Inability to flex to 90*
- Cant bear weight immediately AND during the exam
What is the most common cause of knee pain in pts < 45 yrs old?
-patellofemoral pain syndrome
Tx for pts with infection of a closed space septic arthritis?
- IV antibiotics
2. Joint drainage
Migratory arthralgias in a sexually active pt: most likely dx? Tx?
- dx: disseminated gonrrhea
- tx: ceftriaxone
How does a pt typically describe the injury that caused their meniscal tear injury?
- twisting injury with the foot in a weight-bearing position
- popping or tearing sensation felt that is followed by severe pain
DLCO in emphysema?
-reduced due to loss of parenchyma –> less surface area for diffusion
Most common cause of hemothorax
-trauma –> blunt or penetrating (including iatrogenic)
What contains isocyanates? What health consequence can they have?
- found in polyurethane paints
- can be potent sensitizers in some pts with asthma
Tx for pt who is heterozygous for factor V Leiden mutation with recurrent thrombosis?
-long-term warfarin
DVT/PE prophylaxis in a pt who is at risk but heparin is contraindicated?
-intermittent pneumatic compression
Describe malignant pleural effusions?
- Lymphocytic
2. Exudative
What characteristic means that a malignant pleural effusion has poor prognosis?
- pleural fluid glucose of < 60mg/dL
- means less than 6 mnth survival!
Dx of exercise-induced asthma?
-confirmed with an exercise challenge test in which there is a post exercise > 20% fall in FeV1
Tx for secondary pneumothorax?
-tube thoracostomy
Malignant pleural effusions: usually transudative or exudative?
-exudative
Exercise induced asthma tx?
- SABA 5-10 min before exercise
- works 80% of the time
Maintenance Tx for a pt with a malignancy and venous thromboembolism?
-low-molecular-weight heparin
What is more serious, primary or secondary pneumothorax?
-secondary, becuase it is due to an underlying lung disease, so the lung function is already compromised!
What position should a pt with suspected hemothorax be examined in? Why?
- upright
- supine position will obscure the findings
PCO2 in asthma attacks?
- decrease in mild acute asthma exacerbations
- normal in moderate to severe exacerbations
- elevated in very severe exacerbations –> ominous sign, can be a sign of respiratory distress!
Preferred test for dx of PE?
-contrast-enhanced spiral CT
Lofgren’s syndrome?
- triad of sx in the presentation of sarcoidosis:
1. Bilateral hilar lymphadenopathy
2. Polyarthraligias
3. Erythema nodosum - triad of presenting sx is seen in 25-50% of pts with sarcoidosis, esp in females
Cough that occurs with sensitivity to cold is a clinical marker of? How can it be confirmed?
- clinical marker of airway hyperresponsiveness
- can be confirmed via methacholine challenge test
Tx of acute severe asthma?
-bronchodilators after systemic corticosteroid tx
Dx of a cough-variant asthma?
-trail of albuterol inhaler that resolves sx
How many years does the pneumovax kast?
-about 5 yrs
What do you do next in a pt on low or moderate -dose inhaled corticosteroids that still has persistent asthma sx?
-add a LABA
Tx for a previously well controlled asthmatic following a respiratory tract infection?
-short course of oral steroids
3 Benefits of pulmonary rehab?
- Improves sx
- Improves exercise endurance
- Improves quality of life
* * does NOT increase survival of pt though!
Methacholine test: describe
- give a pt suspected to have asthma increasing doses of methacholine until they have a fall in FEV1 of > 20%
- calculate the provocative concentration (PC20) using a dose response curve
- a PC20 of < 4 mg/mL = asthma
- PC20 of 4-16 = hyperreactivity
- PC20 > 16 = normal
What 3 characteristics mean chest tube drainage should be used for a parapneumonic effusion?
- Pus detected
- Gram-positive pleural fluid
- pH < 7.0
What 3 things can a erythrocyte count in pleural fluid of >100,000 mean?
- Trauma
- Pulmonary infarction
- Pleural malignancy
Pts with Hoddkin’s lymphoma who received extended-field radiation tx are at risk for?
-developing solid tumors
What is the best tx for a pt with cancer of the head of pancreas?
- Whipple procedure = pancreaticoduodenectomh
- best chance of cure
Tx for pt with metastatic small-cell lung cancer?
-combo of chemo and whole brain radiation
What should be given to a cancer pt with pain that ceases to respond to short-term pain management?
- long-acting narcotics
- morphine is better than oxycodone bc oxy is more expensive
What should you do for a women with an abnormal pap smear that shows atypical squamous cells?
-HPV testing
Tx for widely metastatic non-small cell lung cancer?
-hospice
What what type of pancreatic cancer causes pain and weight loss?
-pancreatic body or tail
What should be done next for a pt with a PSA > 4 ?
-transrectal ultrasound-guided prostate biopsy
Women on combination hormone replacement tx are at risk for which cancer?
-breast cancer
What are the 2 most common causes of malignant pericardial dz?
- Breast cancer
2. Lung cancer
Next step for an asymptomatic pt positive for fecal occult blood?
-colonoscopy
What can be done to reduce risk for squamous cell carcinoma and melanoma?
-avoiding direct sunlight during peak hours and other sun avoiding stratagies
What medication can help reduce the risk of prostate cancer?
-finesteride
Malignant v. Benign lung nodules: margins?
- malignant: spiculated
- benign: smooth
What medication can be used to reduce the risk of breast cancer in pts who have elevated risk for breast cancer?
-tamoxifen
Malignant v. Benign lung nodules: calcification?
- malignant: little or no
- benign: central, diffuse, or laminated
Which cancer causes obstructive jaundice and weight loss?
-cancers of the pancreatic head
Malignant v. Benign lung nodules: growth?
- malignant: intermediate doubling
- benign: no or slow growth
Tx for hepatic encephalopathy?
-acyclovir
When should thrombolytic tx be started?
-must be started within 3 hrs of the onset of sx (or last time the pt was known to be well)
3 features of Lewy Body dementia?
- Fluctuating cognition
- Parkinsonism
- Visual hallucinations
5 Characteristics of toxic encephalopathy?
- Cognitive impairment
- Fluctuating lethargy
- Inattention
- Hallucinations
- Asterixis
7 Ssx of vertebral artery stroke?
- Horner’s syndrome
- Dysarthria
- Dysphagia
- Decreased pain & temp
- Dysmetria
- Ataxia
- Vertigo
5 Ssx of Demyelinating polyneuropathy?
- Symmetrical proximal muscle weakness
- Symmetrical distal muscle weakness
- Decreased deep tendon reflexes
- Distal loss of vibration senses
- Distal loss of position senses
When can do chronic daily headaches occur?
- they can occur when a pt with migranes or tension headaches take analgesics too frequently
- these migranes and tension headaches “transform”
What is the most common cause of fatal sporadic encephalitis in the US?
-herpes encephalitis
Tx for cluster headache?
- prednisone
- oxygen
What tx can help improve sx in a pt w/ mild/moderate Alzheimer’s?
-cholinesterase inhibitors can have a modest effect on cognition
What 2 meds should be given to cover s. Pneumo and n. Meninigitis in empiric menigitis tx?
- Ceftriaxone
2. Vancomycin
What is alteplase?
- thrombolytic agent that is a recombinant tissue-type plasminogen activator
- must be given within 3 hrs of the onset of sx
4 Characteristics of vascular dementia?
- History of vascular risk factors
- Abrupt onset with subsequent improvement
- Periventricular white matter ischemia on imaging
- Focal neurological findings on exam
What is “locked in” syndrome due to?
-lesion in the base of the pons usually from a pontine infarction due to a basilar artery occlusion
What should be done in a pt with suspected subarachnoid hemorrhage but normal CT scan?
-do an LP to check for blood or xanthochromia
5 Ssx of herpes encephalitis?
- rapid development of:
1. Fever
2. Headache
3. Seizures
4. Focal neurologic signs
5. Impaired conciousness
What should you think of as a cause of meningitis in a transplant pt? Tx?
- listeria
- penicillin
What are monomorphic or intact erythrocytes characteristic of when found in urine sediments?
-nonglomerular hematuria
What electrolyte imbalance can occur in a pt taking hydrochlorothiazide
-hyponatremia
Common cause of nephrotic syndrome in children and adults?
-minimal change disease
What electrolyte imbalance does sarcoidosis cause? Why?
- hypercalciuria and hypercalcemia
- the granulomatous tissue can produce 1-alpha-hydroxylase –> converts 25-hydroxyvitamin D to the active form, 1-25-dihydroxyvitamin D3 –> more absorption of calcium via vit D toxicity
Abdominal pain and an increasing creatinine level in an elderly man?
-consider acute renal failure caused by urinary tract obstruction
5 Characteristics of acute glomerulonephritis?
- HTN
- Edema
- Proteinuria
- Glomerular hematuria
- Erythrocyte casts in urine
Which comes first diabetic retinopathy or nephropathy?
-retinopathy!
4 Characteristics of nephrotic syndrome?
- Urine protein excretion > 3.5 g/day
- Hyperlipidemia
- Hypoalbuminemia
- Edema
Electrolytes in primary hyperparathyroidism?
- elevated serum calcium
- low phosphorus
- elevated hypercalcemia
Tx and prognosis of atheroembolic acute renal failure?
-no tx and the renal function does not usually return
What acid/base disturbance often develops in a pt with ESLD? Why?
- respiratory alkalosis
- the liver normally metabolizes steroid hormones, the elevated prostaglandin levels in ESLD cause a stimulation of the respiratory drive –> primary resp alkalosis
Formula to calculate osmolality?
2*[Na]+[glucose]/18+[BUN]/2.8
-normal gap < 10
What electrolyte abnormality can be caused by ACEi? What drug should be used instead in these pts?
- hyperkalemia
- instead use: hydralazine/nitrate combo to control the BP
What can hypomagnesium in pts with alcoholism mimic? Why?
- can mimic hypoparathyroidism with hypocalcemia
- hypomagnesium can cause suppression of parathyroid hormone secretion and resistance to PTH action
- so magnesium needs to be corrected in order to correct the calcium
4 Characteristics of hypertensive nephrosclerosis?
- HTN
- Non-nephrotic proteinuria
- Bland urine sediments
- Slowly progressive loss of kidney function
Which pathogen is associated with HUS?
-E. Coli O157:H7 shiga toxin
What rash is characteristic of atheroembolic acute renal failure?
- fine reticular rash, livedo reticularis
- red, lacy rash
Why does hypomagensium occur in alcoholics?
-acute alcohol ingestion induces magnesium loss via urine
Acetazolamide: what is it? What acid/base disturbance can it cause? Why?
- carbonic anhydrase inhibitor
- can cause a non-ion gap metabolic acidosis –> prevents the reabsorption of bicarb in the proximal tubule
Classic triad of sx for acute interstitial nephritis?
- Fever
- Rash
- Arthralgias
What classifies as ACEi-induced prerenal acute renal failure? Tx?
- increase of creatinine >30% after the initiation of an ACEi or ARB (less than 30% is tolerable, an increase in creatinine is expected with these drugs)
- tx: stop the ACEi or ARB
Low anion gap? Common cause?
- less than 6
- hypoalbuminemia
Muddy brown casts?
-acute tubular necrosis
Anion Gap formula?
= [Na+] - ([Cl-] + [HCO3-])
How long after an arterial catheter can atheroembolic acute renal failure occur?
-1-4 weeks afterwards
4 Characteristics of multiple myelomma?
- Calcium is elevated
- Anemia
- Renal failure
- Bone lesions
* *“CRAB”
General characteristic of SIADH?
-patient is unable to make dilute urine
3 features of ethylene glycol poisoning?
- Elevated Anion gap metabolic acidosis
- Elevated osmolar gap
- Calcium oxalate crystals in urine
Decreased pH and bicarb?
-metabolic acidosis!
Osmolar gap?
- difference btwn the calculated and measured osmolality
- normal < 10
What are dysmorphic erythrocytes associated with when they are found in urine sediments?
-glomerular hematuria
Mechanism for how NSAIDs can cause prerenal acute renal failure?
-inhibition of prostaglandin synthesis causes vasoconstriction –> decreased glomerular capillary pressure –> acute renal failure
Normal anion gap
- = 6-11
Common cause of mixed anion gap metabolic acidosis and respiratory alkalosis?
-salicylate toxicity
Oval fat bodies in urine?
-hallmark of proteinuria
C3 and C4 levels in SLE nephritis?
-C3 and C4 will be really low!
5 Characteristics of minimal change disease?
- Edema
- Hypoalbuminemia
- Hyoercholesterolemia
- Urine protein excretion of >3.5 g/24hrs
- Numerous oval fat bodies in urine –> “ maltese cross”
In what kidney disease are ACEi contraindicated? Why?
- bilateral renal artery stenosis bc in these pts the GFR is maintained by an angII-induced vasoconstriction at the efferent arterioles
- *switching to an ARB will NOT solve this problem!
Best screening test for diabetic nephropathy?
-measurement of microalbumin
Dipstick-positive hematuria, but no intact eyrthrocytes on microscopic analysis of urine sediments?
-think: rhabdomyolysis-associated acute renal failure
C3 and C4 levels in postinfectious glomerulonephritis?
- low C3
- normal C4
What is the normal response to a fluid deprivation test?
-increasing urine osmolarity
What does an elevated osmolar gal mean? Common causes?
- means there is a presence of an unmeasured osmole
- causes: ethylene glycol or methanol
What type of casts are seen in acute interstitial nephritis?
-leukocyte casts
Winter’s formula?
-Expected PCO2 = 1.5*[HCO3-]+ 8
+/-2
Primary metabolic acidosis plus a PCO2 higher than expected?
-mixed metabolic and respiratory acidosis
4 Characteristics if Wegener’s granulomatosis?
- Upper respiratory dz
- Lower respiratory dz
- Glomerulonephritis
- C-ANCA
Glomerular nephritis + alveolar hemorrhage?
-Goodpasture’s syndrome
Three most common causes of vaginal discharge?
- Candidal infection
- Trichomonias
- Bacterial vaginosis
Definition of sepsis?
-SIRS in response to confirmed infectious process
What tx has shown to have the most impact on survival in a pt with severe sepsis?
-aggressive fluid resuscitation within 6 hrs!
What post surgery sx means the pt is more likely to have a periprosthetic infection?
- periosthetic pain
- those who are pain-free aftery surgery are less likely to become infected