Step 3 Flashcards
Severe Aortic Stenosis Criteria
- Aortic Jet Velocity >/= 4m/sec
- Mean transvalvular pressure gradient >/= 40 mmHg
- Valve Area usually =1cm
Indications for valve replacement
- Severe AS and >/= 1 of the following:
- Onset of symptoms
- LVEF <50%
- Undergoing other cardiac surgery
What are the medical contraindications to pregnancy?
- LVEF <40%
- NYHA class III-IV heart failure
- Prior peripartum cardiomyopathy
- Severe obstructive cardiac lesions
- Severe pulmonary HTN
- Unstable aortic dilation >40mm
An elevation of what hormone confirms the diagnosis of 21-hydroxylase deficiency?
17-hydroxyprogesterone
How dto differentiate 21-hydroxylase and 11beta-hydroxylase deficiency?
hypotension (low sodium, high K) in 21-hydroxylase and hypertension in 11beta-hydroxylase (both have ambiguous genetalia
How to differentiate 11beta-hydroxylase from 17alpha-hydroxylase deficiency?
17-alpha hydroxylase deficiency will be phenotypically normal females and 11-beta hydroxylase will have ambiguous genitalia (both will have hypertension)
How do you treat H Pylori?
PPI + Clarithromycin + Amoxicillin for 10-14 days
How do you treat H Pylori with penicillin allergy?
PPI + Clarithromycin + flagyl for 10-14 days
How do you treat H Pylori with treatment failure?
PPI + Bismuth + Flagyl + tetracycline for 10-14 days
How does licorice cause hypertension?
Licorice contains glycyrrhetinic acid, which inhibits 11-beta-hydroxysteroid dehydrogenase, thereby preventing the local converstion of cortisol to cortisone. Excess cortisol binds to mineralocorticoid receptors and causes HTN
What is Penicillamine used for?
Increased excretion of copper in Wilson’s Disease
What is the gold standard for treatment of infantile spasms?
Corticotropin (ACTH) and vigabatrin
What is the treatment for typical absence seizures?
ethosuximide
What are the EEG findings for juvenile myoclonic epilepsy and how do you treat it?
bilateral polyspike slow wave activity and treat with Valproic acid
How do calcineurin inhibitors cause nephrotoxicity?
increasing vasoconstrictor endothelin, inhibiting nitric oxide activity and increasing sympathetic outflow
Which live vaccines are okay in HIV infected patients?
MMR vaccine, varicella and zoster virus vaccines
(must have CD4 >200 and no h/o AIDS defining illness
What has St. John’s wort (hypericum perforatum) been proven to treat?
mild to moderate depression (equivalent to TCAs and SSRIs)
What is the initial treatment for mixed cryoglobulinemia syndrome?
rituximab + prednisone
What are the lab findings in post-strep GN?
low C3, normal C4 and positive streptozyme test
What are the lab findings in mixed cryoglobulinemia syndrome?
elevated RF and hypocomplementemia (also HCV positive)
How do you treat epididymitis?
CTX/Doxycycline if STI
Levofloxacin (if coliform bacteria–see more in BOO with age >35)
When is iron supplementation recommended in patients with ESRD?
transferrin saturation <30% and ferritin <500 ng/mL
When is EPO recommended in CKD?
Hemoglobin <10
What are the lab findings in absolute iron deficiency?
Transferrin Saturation <20% or ferritin <100ng/mL
What are the contraindications to neuraxial analgesia?
severe thrombocytopenia (<70K) or rapidly dropping platelet count (often associated with preeclampsia with severe features)
What are the initial screening labs at the first prenatal visit?
- Rh(D), antibody screen
- Hgb/Hct, MCV
- HIV, VDRL/PRP, HBsAg
- Rubella and varicella immunity
- Pap test (if screening indicated)
- Chlamydia PCR
- Urine culture
- Dipstick for urine protein
When do you send 50-g 1-hour GCT?
24-28 weeks
When do you check for GBS?
35-37 weeks
What is the treatment for septic arthritis in kids?
vancomycin (plus cefotaxime if age <3 months as you have to cover GNRs)
What is the treatment for diptheria?
erythromycin or penicillin G
What are the complications of diptheria?
toxin-mediated myocarditis, neuritis, kidney disease
How do you manage infants born to mothers requiring GBS ppx?
If mother received ppx >/= 4h before delivery: observe for 48h
If >/= 37 weeks and membranes ruptured <18 hours: observe for 48h
If <37 weeks gestation and membranes ruptures >18 hours: CBC, blood culture and observe for 48h
Primary Prevention ICD indications
Prior MI and LVEF =30%
NYHA class II or III symptoms and LVEF = 35%
Secondary Prevention ICD inidcations
Prior VF or unstable VT without reversible cause
Prior sustained VT with underlying CM
What is a worrisome Hgb Level in pregnancy?
<11 g/dL in first trimester and third trimester and <10.5 g/dL in the third trimester
What is the agent of choice for prevention of episodic and chronic cluster HA?
Verapamil
What is STOP Bang Survey?
1 point each (>/=5 high and 3-4 points intermediate risk):
- Snoring
- Excessive day-time tiredness
- Observed apneas or choking/gasping
- HTN
- BMI >35
- Age >50
- Neck size >17 men or >16 women
- Male gender
What test is used to evaluate for torn achilles tendon
Thompson Test: squeeze the patient’s calf muscles and observe for presence of plantar flexion of the foot–if it is observed, test is negative and indicates normal function of the Achilles tendon
Sensitivity
True Positives/ (true positives + false negatives)
Specificity
True Negatives/ (true negatives + false positives)
Positive Predictive Value
True Positives/ (true positives + false positives)
Negative Predictive Value
True Negatives/ (true negatives + false negatives)
Positive Likelihood Ratio
Sensitivity/(1-specificity)
Negative Likelihood Ratio
(1-Sensitivity)/Specificity
What is aristolochic acid used for and what is the major risk?
weight loss
biggest risk is nephrotoxicity
What is ginkgo biloba used for and what is the major risk?
memory enhancement
increased bleeding risk
What is ginseng used for and what is the major risk?
improved mental performance
increased bleeding risk
What is saw palmetto used for and what is the major risk?
BPH
mild stomach discomfort and increased bleeding risk
What is black cohosh used for and what is the major risk?
postmenopausal symptoms
hepatic injury
What is St John’s Wort used for and what is the major risk?
Depression/Insomnia
(drug interactions with antidepressants, OCPs, anticoagulants and digoxin) and HTN crisis