Random Flashcards
Age range for ASCVD risk calculator
40-80yo
What causes AA Amyloid?
Amyloid A circulating systemically
What causes AL Amyloid?
Plasma cel dyscrasias such as multiple myeloma, smoldering myeloma, and MGUS
Equation for serum osmolality
(2xNa) + (Gluc/18) + (BUN/2.8)
What is an elevated serum osm gap?
> 10
Differential for AGMA
Glycols
Oxoproline aka pyroglutamic acid (APAP)
L- Lactate
D- Lactate
Methanol
Aspirin aka salicylate
Renal
Ketoacidosis
Name the 3 RTAs and their urn AG, serum K, and urine pH
Type 2 (proximal) RTAa
NEGATIVE urn AG
Decreased K+
Urine pH is variable
Type 1 (hypokalemic distal) RTA
Positive urn AG
Decreased K+
Urine pH >5.5
Type 4 (hyperkalemic distal) RTA
Positive urn AG
Increased K+
Urine pH <5.5
What are the 4 features of fanconi syndrome?
Fanconi syndrome has glycosuria, phosphaturia, aminoaciduria, hypouricemia
How do you treat hypermagnesemia in ESRD/anuric patients while awaiting dialysis?
Calcium gluconate
(Mg blocks K+ and Ca2+ channels resulting in weakness/paralysis)
How does hypoalbuminemia affect serum calcium?
Calcium binds to albumin. Hypoalbuminemia will therefore result in a lower total calcium level. Ionized calcium is required to determine if patient is truly hypo/hypercalcemic
Describe calcium homeostasis
When to screen for T2DM? What interval should you screen?
USPSTF: 35-70yo Q3yrs
ADA: 35-70yo Q3yrs
Endocrine society: 40yo
What is prediabetes range?
A1C 5.7% - 6.4%
What tests do you order for T1DM confirmation? Which ones are widely available?
- Insulin antibodies
- Glutamic acid decarboxylase antibodies (GAD65)
- Islet antigen antibodies
- Zinc transporter A antibodies
- Tyrosine phosphatases IA-2 and IA-2beta
GAD65 and IA-2 and IA-2beta are widely available
Diagnostic criteria for diabetes
- Random glucose 200+ and hyperglycemia symptoms
- Fasting plasma glucose 126+
- plasma glucose 200+ in oral glucose test
- A1C 6.5% or greater
What is C-peptide? How is it affected in T1DM? Exogenous insulin use?
C-peptide is a product cleaved from preproinsulin to create insulin
C-peptide will be low in T1DM
C-peptide will be low in exogenous insulin use
What other autoimmune disorders are linked to T1DM?
Adrenal deficiency
Celiac
Thyroid disorders
Vitiligo
What is the difference between T1DM (1A) and (1B)?
1A = autoimmune
1B = idiopathic (no antibodies)
Define prediabetes A1C and what should you treat it with?
5.7% - 6.4%
Lifestyle modification and Metformin
When should pregnant women be screened for diabetes?
If risk factors: At initial evaluation and before 15 weeks
All other: between 24-28 weeks
ADA recommends oral glucose tolerance test 4-12 weeks postpartum if gestational diabetes occurred to monitor for resolution? True ir false?
True
What is the target A1C in diabetic patients?
7-8%
De-intensifying if easily achieving goal <7%
What is first line treatment for HBV? When do you treat?
Entecavir or tenofovir
Evidence of cirrhosis, liver failure, immune-active phase (chronic), deactivation phase, and immunosuppressives state
Hep B vaccine administration age? How many?
19-59yo
3 dose series 0 month, 1 month, 6 month
Define drug resistant epilepsy. What are the steps for management?
Ongoing seizures despite treatment with 2 adequately dosed AEDs
Continuous EEG and MRI (confirms anatomical location with EEG) to determine candidacy for epilepsy surgery (lobectomy)
CHADS2VASC points
What are the preferred agents to treat tardive dyskinesia? Other agents? Treatment for refractory disease?
Vesicular monoamine transporter 2 inhibitor
-Valbenazine
-Tetrabenazine
-Deutetrabenazine
Can use amantadine, clonazapam
Deep brain stimulation is used for refractory treatment
What is the mechanism of tardive dyskinesia?
Extrapyramidal complication of dopamine receptor blockade medications
How do you treat insomnia refractory to improved sleep hygiene and CBT?
Short term Doxapin or a non-benzodiazepine (zolpidem)
Avoid trazadone if possible
At what EGFR is metformin contraindicated?
EGFR <30
How often should A1C be checked when on treatment?
Q3months if not at goal
Q6months if at goal
At what A1C should insulin be initiated?
A1C 9% or greater in a symptomatic patient (polydipsia, polyuria)
What agent should be used in gestational diabetes?
Insulin
Metformin and sulfonylureas cross the placenta and long term safety data does not exist.
Goal blood glucose range while inpatient
140-180
How does DKA cause ketosis? How does HHS typical not have ketosis?
Due to insulin insufficiency, lipolysis occurs which results in ketone creation. HHS is characterized by partial insulin deficiency resulting in suppression of lipolysis
When should T2DM patients get retinal screening? T1DM?
T2DM: at diagnosis then QYear
T1DM: within 5 years of diagnosis is then qYear
When should T2DM patients get kidney screening? T1DM?
T2: at diagnosis then QYear
T1: within 5 years of diagnosis then QYear
When should T2DM patients get neuropathy screening? T1DM?
T2: at diagnosis then QYear
T1: within 5 years of diagnosis then QYear
When should ASA be initiated for primary prevention in diabetics? Secondary?
Initiate ASCVD 10% or greater ages 40-59yo
All diabetics should be on ASA for secondary prevention
When should patients with diabetes be started on a statin?
40-75yo
Moderate dose for all and high dose for those with high ASCVD risk
What are the 2 types of diabetic retinopathy
Proliferative, and non-proliferative
What are the treatments available to prevent progression of diabetic retinopathy? (2)
Laser photocoagulation
Anti-VEGF
What two drugs are FDA approved for diabetic neuropathy?
Pregabalin and duloxetine
What is the difference between non-invasive and invasive infectious diarrhea?
Non-invasive typically cause watery diarrhea
Invasive typically causes dysentery (bloody diarrhea)
What are the 6 causes of diarrhea
Osmotic
Secretory
Steatorrhea
Inflammatory
Motility
Miscellaneous
What are the characteristics of steatorrhea?
Malodorous, greasy stools that float
What is a common about osmotic diarrhea and eating?
It’s worse with eating and resolves with fasting
What is common about secretory diarrhea and food?
It remains constant with eating and fasting
What is the pathophysiology of secretory and osmotic diarrhea?
Osmotic: involves unabsorbed substance that draws water into the lumen
Secretory: results in disordered electrolyte transport resulting in secretion of fluids into the lumen
What are some stool studies that can help identify possible causes of chronic diarrhea?
Stool electrolytes
Stool pH
Fat content
Fecal calprotection
RBC/WBC
What is the equation for fecal osmotic gap? What do the values mean?
290 - [2x (stool Na + stool K)]
<50= secretory diarrhea
>100= osmotic diarrhea
What is fecal elastase used for?
A low fecal elastase indicates impaired pancreatic exocrine function in diarrhea (elastase is a digestive enzyme)
What is microscopic colitis? How does it appear on endoscopy? Histology? Management? Symptom management?
Inflammation of the inner lining of colon
Normal endoscopy
Inflammation on pathology
Tx:
1st line: Budesonide
2nd line: Mesalamine, prednisone, or bismuth subsalicylate
Sxs Tx:
Loperamide
What are the celiac labs?
Total IgA
IgA tissue transglutaminase Ab
If IgA deficiency obtain:
Anti-deamidated gliadin peptide IgG Ab
Or
Tissue transglutaminase IgG Ab
What HLAs are associated with celiac? Can these confirm celiac disease?
HLA-DQ2 and HLA-DQ8
Genetic testing cannot confirm celiac disease BUT it can rule it out
Can serologic labs confirm celiac disease?
While it can highly suggest disease, endoscopy with biopsy from duodenum is needed to confirm diagnosis
What is a PESI score?
Pulmonary embolism severity index
What are differentiating features between early repolarization and pericarditis?
What is first line treatment for essential tremor (3 drugs)? what is second line (One drug)? 3rd?
1st: propranolol, primidone, topiromate
2nd: clonazapam
3rd: deep brain stimulation or thalmotomy
How do you test for H pylori? Treatment? Confirming eradication?
Urea breath test or fecal antigen or biopsy
PPI, bismuth, tetracycline, flagyl
Urea breath test or fecal antigen or biopsy (only biopsy if needed)
Besides the obvious cessation of gluten, what medication can treat dermatitis herpataformis?
Dapsone but check for G6DP deficiency before starting
What symptoms does small intestinal bacterial overgrowth cause? What causes SIBO? How to diagnose it? Treatment?
Abdominal pain, bloating, farts, diarrhea, steatorrhea
Impaired motility, strictures, diverticula, and more that slows food transit allowing for more “food” for bacteria
Glucose breath test
(lactulose breath test has lower sensitivity)
Rifaxamin
What is short bowel syndrome? Management?
Loss of functional small bowel (resection, crohns, trauma, etc)
Adequate nutrition, antimotility agents
What are the 3 types of inflammatory bowel diseases?
Crohns, ulcerative colitis, and microscopic colitis
Tobacco is protective in which inflammatory bowel disease? Increases risk?
Protective in UC
Increases risk in Crohns
How does sarcoidosis cause hypercalcemia?
It increases the activity of 1-alpha-hydroxylase thereby increasing levels of 1,25 Vitamin D
Can patients with ulcerative colitis get toxic megacolon?
Yes
What are the 2 most common dermatologic manifestations of inflammatory bowel disease?
Erythema nodosum and pyoderma grangrenosum
What are possible inflammatory bowel disease antibodies?
- saccharomyces cerevisiae antibodies 2. perinuclear antineutrophil cytoplasmic antibodies
What are the 4 categories of drugs used to treat inflammatory bowel disease?
5-aminosalicylates
glucocorticoids
immunomodulators
biologics
Define IBS-C and IBS-D
IBS-C: IBS with constipation
IBS-D: IBS with diarrhea
What are the diagnostic criteria for IBS?
Recurrent abdominal pain at least 1 day a week for 3 months along with at least two of the following:
1. defecation-related pain
2. change in stool frequency
3. change in stool consistency
IBS management
Adding fiber to diet
FODMAPs reduction diet
How to diagnose acute/chronic mesenteric ischemia?
Mesenteric angiography
Treatment of acute mesenteric ischemia
Fluid resuscitation
Pain management
Antibiotics
Stenting +/- Surgery (necrotic bowel? Pneumatosis?)
Treatment of chronic mesenteric ischemia
Stenting or surgical revascularization
What are common sites for colonic ischemia? What could you find on CT? What is the test to confirm diagnosis?
Watershed areas such as splenic flexure and rectosigmoid junction
Bowel wall thickening and pericolonic fat stranding around watershed areas
Colonoscopy with biopsy
Should patients with RIGHT sided colonic ischemia get vascular imaging? Left?
YES as it is commonly an occlusive process
No as it is typically non-occlusive disease
When can you remove thrombosed hemorrhoids?
Thrombosed external hemorrhoids are best treated with surgical excision within the first 4 days of symptom onset
What are some causes of fecal incontinence?
- Decreased sphincter tone
- Decreased sphincter sensation
- Increased fecal loading (high stool volume)
- Diarrhea
- Hemorrhoids
- Medications
Think about how to work these up!
Physical exam signs of appendicitis
McBurney (RLQ)
Rovsing (right lower quadrant pain with left lower quadrant palpation)
What does crohns colonoscopy and histology show?
Colonoscopy results show patchy distribution of mucosal inflammatory changes with “skip areas” of normal intervening mucosa
biopsy results for involved mucosa show features of chronicity (distorted and branching colonic crypts, similar to UC).
What does UC colonoscopy and histology show?
Patients with ulcerative colitis have distorted and branching colonic crypts on biopsy, but the distribution of inflammation begins in the rectum and progresses up the colon in a continuous and symmetric pattern, without skip areas.
How do you treat myxedema coma?
Check serum cortisol and replete if needed (random <18?) prior to starting levothyroxine
What are the 5 types of urinary incontinence?
Stress
Urgency
Overflow
Functional
Mixed
Define stress incontinence. Treatment?
Incontinence associated with increased intra-abdominal pressure, such as sneezing, laughing, or coughing
Pelvic floor therapy, decreased EtOH and caffeine, tobacco cessation
Topical estrogen, pessiaries
Define urge incontinence. Treatment?
Incontinence due to detrusor overactivity associated with urge to void preceding or accompanied by leakage of urine
Timed voiding, decreased EtOH and caffeine, tobacco cessation
Mirabegron, antocholinergics, topical estrogen
Define overflow incontinence. Treatment?
Incontinence due to incomplete bladder emptying, leading to continuous urine leakage or dribbling, weak urinary stream, urinary hesitancy, increased frequency, and nocturia
Double voiding, decreased EtOH and caffeine, tobacco cessation
Tamsulosin, finasteride
Define functional incontinence. Treatment?
Incontinence due to physical inability to toilet in a timely manner
Timed voiding, decreased EtOH and caffeine, tobacco cessation
No pharmacological medications
Define mixed urinary incontinence. Treatment?
Incontinence due to a combination of increased intra-abdominal pressure and detrusor hyperactivity
Pelvic floor therapy, timed voiding, decreased EtOH and caffeine, tobacco cessation
When should women get breast cancer screening?
50-75yo Q2years
What is the preferred treatment for mild C diff? Severe? Treatment for fulminant c diff?
Fidaxomicin or Vanco
Fidaxomicin or Vanco (WBC >15)
PO Vanc and IV flagyl (hypotension, ileus, shock, or toxic megacolon)
What are the criteria for pre-eclampsia?
New onset HTN with proteinuria (≥300 mg/24 h or a urine protein-creatinine ratio ≥300 mg/g) after 20 weeks of pregnancy.
Can be diagnosed without proteinuria if HTN is accompanied by other end-organ damage (thrombocytopenia, kidney dysfunction, liver dysfunction, pulmonary edema, cerebral or visual symptoms).
How do you treat mild/moderate CO poisoning? Severe (define)?
15L non-rebreather for CO
Hyperbaric oxygen chamber
(any of the following: coma/loss of consciousness, neurologic deficits, cardiac or other end-organ ischemia, severe metabolic acidosis, or a CO level of 25% or greater (15% or greater in pregnant patients)
What is defined at treated depression in remission?
PHQ9 less than 5
Where does primary TB occur? Reactivation?
Primary: lower/middle lobe
Reactivation: upper lobes
Differential for intrarenal AKI (Mack’s diagram)
What does a M spike of electrophoresis indicate?
monoclonal spike suggests a plasma cell dyscrasia or monoclonal gammopathies
What labs should be obtained when working up a monoclonal spike?
CBC with differential
Chemistries (creatinine, calcium, and albumin levels)
β2-microglobulin
SPEP/UPEP
serum and urine immunofixation (FLC)
serum FLC tests
Quantitative immunoglobulins.
What imaging modalities are used to detect lyric bone lesions?
PET and MRI
Criteria for MGUS
MGUS is characterized by an M protein level less than 3 g/dL (or less than 500 mg/24 h of urinary monoclonal FLCs), clonal plasma cells comprising less than 10% of the bone marrow cellularity, and the absence of related signs and symptoms of end-organ damage
What type of 5-ASA should be used in UC proctitis? Left sided colonic disease?
5-ASA suppository
5-ASA enema
When is multimatrix budesonide used in UC?
mild to moderate ulcerative colitis unresponsive to 5-ASAs and in moderate to severe disease.
When are immunomodulators used in UC? How fast are they?
Used to maintain remission. Takes 3-4 months to work so needs steroid taper while waiting to work.
Azathioprine and 6-mercaptopurine
Is methotrexate used in UC? Crohns?
Used in crohns
NOT used in UC
What 2 tests should be ordered before starting TNF agents in IBD?
TB and Hep B
Since 5-ASAs are not good to treat crohns, What 5-ASA derivative is used?
Sulfasalazine
What steroid is used to treat ileocolonic crohns?
Budesonide
What immunomodulators are commonly used to treat crohns?
Methotrexate, azathioprine, 6-MP
What eye drop antibiotic should be used in bacterial conjunctivitis who don’t wear contacts? Do wear contacts?
Trimethoprim-polymixin or erythromycin
Ofloxacin
What eye drops should be used for allergic conjunctivitis?
Antihistamines
Guidelines for lung cancer screening?
Ages 50-80, quit less than 15yrs ago, 20+ pack history
Can choose to stop if negative CT scans and 15years out from smoking
What are the two cel types in the thyroid? What do they produce?
Follicular cells: T 3/4
Parafollicular (c) cells: calcitonin
Where is T4 predominantly converted into T3?
Liver and kidney
How to work up a thyroid nodule?
FNAB: fine needle aspiration biopsy
Causes for diffuse goiter?
Grave’s
Hashimoto’s
Riedel (IgG4) thyroiditis
Iodine insufficiency/deficiency
What vitamin can falsely affect thyroid function?
Biotin
(Falsely Low TSH, falsely high T 3/4)
What is the difference between thyrotoxicosis and hyperthyroidism?
Thyrotoxicosis describes high levels of circulating thyroid hormones (T4 and T3) from any cause.
Hyperthyroidism is thyrotoxicosis caused by excessive endogenous thyroid hormone production.
How do you diagnose Graves?
- Low TSH, high T3/4
- Diffuse radioactive iodine uptake
- Presence of thyroid stimulating globulin (TSI) or thyrotropin receptor antibodies (TRAb)
A patient with signs if thyrotoxicosis gets a RAIU shown below. What are the two possible causes?
- Destructive thyroiditis (hypothyroidism will follow)
- Exogenous thyroid hormone ingestion
When is thyroid scintigraphy contraindicated?
Pregnancy and lactation
Name 10 causes of thyrotoxicosis
Graves
Toxic multinodular goiter
Toxic adenoma
Thyroiditis
Medication induced
HCG-mediated
Strums ovarii
Follicular thyroid cancer mets
Thyrotrope adenoma (TSH secreting tumor)
Normal QTc
<450
First-line treatment of cluster headache? Maintenance therapy?
Subcutaneous Sumatriptan and O2
Verapamil and galcanezumab
How should levothyroxine be dosed in general patients? Cardiac patients?
Weight based
Start small and ramp up as it can cause imbalances in myocardial oxygen demand
A patient with an EF <50% has an echo that shows low-flow, low-gradient severe aortic stenosis. What test do you order to confirm?
Dobutamine stress test
What is roflumilast? When to start it?
PDE4 inhibitor used for sever COPD with frequent exacerbations
Equation for positive likelihood ratio? Negative likelihood ratio? Sensitivity? Specificity? Positive predictive value? Negative predictive value?
POS LR: sensitivity / (1-spec)
NEG LR: (1-sens)/specificity
What are the 3 initial tests you can use for Cushing diagnosis? How many need to be abnormal?
- 24hr urine free cortisol
- 1mg dexamethasone suppression
- Late-night salivary cortisol
2 of 3
If one of the 3 initial Cushing tests is positive, what test do you order next?
ACTH level
Initial tests:
1. 24hr urine free cortisol
2. 1mg dexamethasone suppression
3. Late-night salivary cortisol
In Cushing syndrome, if ACTH is suppressed, what does that mean? What do you do?
ACTH independent process
Should get a CT or MRI of adrenal glands and look for a mass or find another possible hormone producing lesion
What is the treatment for benign and malignant cortisol-secreting tumors? What does the patient require following treatment?
Surgical resection
Needs glucocorticoid treatment to allow for the other adrenal gland to recover from prolonged ACTH suppression
Symptoms of Cushing (7 possible)?
HTN
Diabetes
Osteoporosis
Proximal muscle weakness
Supraclavicular fat pad
Facial plethora
Striae
What test is used to diagnose primary hyperaldosteronism?
PAC/PRA >20 and PAC >15
PAC: plasma aldo concentration
PRA: plasma renin activity
To confirm the diagnosis of hyperaldosteronism, what imaging should be done? Procedure?
Adrenal CT
Adrenal vein sampling
What is the treatment for hyperaldosteronism?
spironolactone (eplerenone can be used but spironolactone is preferred)
Surgery can be considered if unilateral
What is the classic pheochromocytoma symptom triad?
Headache, palpitations, and diaphoresis
What are the two tests for diagnosing pheochromocytoma/paraganglioma?
Plasma and urine metanephrines
What is the definitive treatment for a pheochromocytoma/paraganglioma?
Surgical resection
What diseases are associated with MEN1? MEN2?
MEN1:
-pituitary adenoma
-parathyroid adenoma
-pancreatic tumors
MEN2:
-parathyroid adenoma
-pheochromocytoma
-medullary thyroid carcinoma
What is a concerning hounsfield unit for an adrenal incitentaloma? What needs to be done?
10+ HU
Test for cushings and pheochromocytoma
Addison disease is an autoimmune process that destroys what cortical layers of the adrenal gland?
All of them!
How does Addisons disease cause hyperpigmentation?
ACTH stimulates melanocytes
What morning cortisol level requires ACTH stimulation testing? What if stimulation test is low?
3-15 microgram/dl
Obtain serum ACTH to determine if primary or secondary insufficiency
What antibodies are associated with autoimmune Addison?
21-hydroxylase antibodies
What is the treatment of Addisons?
Steroid and fludrocortisone
What is the common bug for acute prostatitis in ages <35? 35 and older? Treatment?
<35: gonorrhoeae or chlamydia; Doxycycline and one dose of ceftriaxone
35+: E. coli; Bactrim or fuoroquinolone
When treating autoimmune hepatitis, how long do you treat before trying to wean/stop medications?
At least 2 years and you should biopsy before discontinuation to determine risk of relapse
How often should women with IBD on immunosuppressants get PAP screening?
Yearly
When should screening for prostate cancer occur?
55-70
What are 3 tests used to diagnose gastroparesis?
Gastric scintigraphy
Wireless motility capsule
Breath testing
What organ disease should you avoid morphine?
Renal disease and morphine is Renault excreted
What is a medication used for IBS-D?
Rifaxamin
What is a medication used for IBS-C when not responding to conservative measurements?
Linaclotide