Term
|
Definition
| Inhibits DNA synthesis by conversion of 5-fluorouracil by cytosine deaminase |
|
|
Term
|
Definition
| N/V, Diarrhea, Bone marrow suppresion |
|
|
Term
| Flucytosine Clinical Uses |
|
Definition
| Systemic fungal infections (crypto) in combo with Amphotericin B |
|
|
Term
| Amphotericin B Side effects |
|
Definition
-Need to supplement K and Mg b/c of altered renal tubule permeability. -Can cause fever,chills, hypotension, nephrotoxicity, arrhythmias, anemia, IV phlebitis, N/V |
|
|
Term
| Anterior Circulation of Brain and Derivation |
|
Definition
-ACA, Lateral Striate, and MCA -Derived from internal carotid |
|
|
Term
| Posterior Circulation of Brain and Derivation |
|
Definition
-Post. Circulation: Basilar, AISA, ASA, PICA, PCA, Vertebral -Derived from subclavians |
|
|
Term
| ACUTE PANCREATITIS-presentation |
|
Definition
Sudden onset of nausea/vomiting and epigastric abdominal pain.
-Dilation of common bile duct may suggest gallstones
-May cause DIC
|
|
|
Term
|
Definition
Decreased platelet count
Increased BT, PT, and PTT |
|
|
Term
|
Definition
| It is a TLR present on macrophages that recognizes LPS on gram - bac. CD14 activation results in upregulation of NF-kB→ production of multiple immune mediators |
|
|
Term
|
Definition
| Headache, Visual field disturbances, seizures, micro:spindle cells in whorled pattern w/psammoma bodies |
|
|
Term
| Trypanasoma cruzi transmission |
|
Definition
| Reduviid Bug "kissing bug" |
|
|
Term
|
Definition
|
|
Term
| Drugs that act on Microtubules |
|
Definition
1.Mebendazole/Thiabendazole(antihelminic)
2.Griseofulvan (antifungal)
3.Vincristine/vinblastine (anti-cancer-Hodgkin's/Non-Hodgkins)
4.Paclitaxel(anti-breast cancer)
5.Colchicine(anti-gout) |
|
|
Term
| Signs/Symptoms of Hypokalemia |
|
Definition
| U waves on ECG, flattened T waves, arrhythmias, paralysis |
|
|
Term
| Signs/Symptoms of Hyperkalemia |
|
Definition
| Peaked T waves, wide QRS, arrhythmias |
|
|
Term
| What is a common hematologic problem associated with CLL? |
|
Definition
| Warm antibody autoimmune hemolytic anemia |
|
|
Term
| What is sodium bicarbonate used for? |
|
Definition
| IV sodium bicarbonate is used for treating acidosis and hyperkalemia. Orally it is an alkalinizing agent or an antacid |
|
|
Term
| When is b-HCG detectable in the serum? |
|
Definition
| Around one week (generally about 8 days after ovulation but can take up to 11 days). Will detect at week2 in urine. |
|
|
Term
| Name the 3 important dopaminergic pathways |
|
Definition
1.)Mesolimbic/mesocortical-regulates behavior (schizophrenia) 2.)Nigrostriatal-coordination of voluntary movement-Parkisonism 3.)Tuberoinfundibular-controls prolactin secretion from ant. pituitary- hyperprolactinemia |
|
|
Term
| What should you suspect if you see hyponatremia with a urine osm, > 100 |
|
Definition
|
|
Term
| What should you suspect if you see hyponatremia w/ urine osm < 100 |
|
Definition
| Primary polydipsia (b/c body is responding appropriately by reabsorbing all the sodium it can). |
|
|
Term
| What are the drugs used to treat hypertension in asmatic patients (or patients with pulmonary disease) |
|
Definition
A BEAM=
Acebutolol (partial agonist), Betaxolol, Esmolol (short acting), Atenolol, Metoprolol
-These drugs are selective antagonists for B1 (which B1 stim. normally causes increased heart rate and contractility) but don't have an effect on B2 |
|
|
Term
What is mixed venous oxygen saturation?
|
|
Definition
| It is a way of basically determining the oxygen demand and consumption in the periphery. It is a direct measurement of the mixed venous blood in the right heart coming in from the Sup. vena cava, IVC, and the coronary circulation. Said another way it is the percentage of reduced hemoglobin left after tissue oxygen extraction. So in vigorous exercise.... |
|
|
Term
What is the first line treatment for P. jiroveci pneumonia?
What is second line if patient has an allergy to the first line treatment? |
|
Definition
First line: TMP-SMX
Second line if allergic to sulfa drugs: pentamidine |
|
|
Term
| Name the three cephalosporins used to treat Pseudomonas infections? |
|
Definition
| Cefoperazone, ceftazidime, cefepime |
|
|
Term
| What is the mechanism of cephalosporins? |
|
Definition
| They are β-lactam antibiotics that inhibit bacterial cell wall synthesis and are more resistant to penicillinases. They are bactericidal. |
|
|
Term
| Cephelosporins when combined with aminoglycosides can cause what adverse effects? |
|
Definition
| Anaphylaxis and nephrotoxicity |
|
|
Term
| What should be your differential for organisms causing long branching filaments? |
|
Definition
| N.asteroides, A.israelii, and fungi(and fungi probably wouldn't be evident on a gram stain). |
|
|
Term
| Treatment for Actinomyces vs. Nocardia and clinical presentations |
|
Definition
SNAP= Sulfa drugs treat Nocardia, Actionomyces use Penicillin
A. israelii causes oral and facial abscesses vs. n.asteroides which causes pneumonia in immunocompromised patients |
|
|
Term
| What type of renal involvement/pattern is seen in Wegner's granulomatosis? |
|
Definition
| Segmental necrotizing glomerulonephritis(sometimes w/ crescents) |
|
|
Term
| What drug do you use to treat Legionella pneumonia and what are some of the features that make this pneumonia unique? |
|
Definition
| Azithromycin or erythromycin b/c legionella has a b-lactamase that makes it resistant to penicillin derivatives. Legionella pneumonia presents with acute hyperpyrexia, severe pneumonia, non-productive cough, diarrhea, and hyponatremia and CNS problems (last two unique with this pneumonia) |
|
|
Term
| Pseudomonas characteristics |
|
Definition
| Aerobic, oxidase (+), gram (-) bacteria, non-lactose fermenting, producing pyocyanin and pyoverdin. Produces exotoxin A which ADP ribosylates elongation factor 2 inhibiting host cell protein synthesis, and endotoxin(fever/shock) |
|
|
Term
| Name bacteria that produce exotoxins that lead to increased cAMP levels? |
|
Definition
| Cholera, E.Coli, B.pertussis, bacillus anthracis, |
|
|
Term
| Lab characteristics of Strep. pyogenes? |
|
Definition
β hemolytic, gram (+), cat (-), bacitracin sensitive
Strep. throat is B.S.
B.S.= beta hemolytic, Bacitracin Sensitive |
|
|
Term
What HIV drug should you give in HIV + pregnant women?
What are the S/S of HIV infection in a newborn? |
|
Definition
Zidovudine(ZDV) is prescribed for prophylaxis during pregnancy to reduce risk of fetal transmission.ZDV is a reverse transcriptase inhibtor(toxicty:megaloblastic anemia)
-Oral thrush, interstitial pneumonia, severe lymphopenia in first year of life |
|
|
Term
What stain is used to detect crypto in bronchoalveolar fluid?
What about CSF?
|
|
Definition
Mucicarmine-will stain yeast red
You can do a latex agglutination test in the CSF, stained with india ink |
|
|
Term
| Transplant patient...now has oportunistic infection...what is it? |
|
Definition
| CMV (enveloped, ds DNA), with intranuclear and cytoplasmic inclusions (Owl's eyes)-look at pg 184 in Step for good picture |
|
|
Term
| What drug is given to treat pulmonary hypertension and right ventricular hypertrophy and what is it's mechanism? |
|
Definition
| Bosentan-competitively antagonizes endothelin 1 receptors, decreasing pul. vascular resistance. Endothelin 1 causes vasoconstriction and endothelial proliferation. |
|
|
Term
| What are the 5 hormones that can affect surfactant production? |
|
Definition
| cortisol, thyroxine,and prolactin-increased levels=more surfactant, low levels of any can lead to RDS. TGF-β, insulin higher levels=less surfactant |
|
|
Term
| What do you give premature infants that have risk factors for RSV infections? |
|
Definition
| Palivizumab- a monoclonal antibody against F protein (which is the fusion protein to resp. epithelial cells) prevents RSV inf./pneumonia. Risk factors for RSV inf. are prematurity, resp. infections, congenital heart disease, and immunodeficiencies |
|
|
Term
What are the 4 T's of Type IV hypersensitivty reactions?
|
|
Definition
| 4 T's are T-cell mediated, TB skin test (PPD), Transplant rejections, Touching (contact dermatitis) |
|
|
Term
|
Definition
| Histoplasmosis-b/c it is a macrophage filled with numerous small ovoid bodies. |
|
|
Term
| What is unique about the M. pneumoniae cell membrane? |
|
Definition
| Only bacterial membrane containing cholesterol. |
|
|
Term
| What drugs are used to treat a mycoplasma pneumoniae infection? |
|
Definition
| Erythromycin or tetracycline |
|
|
Term
| What kind of pneumoniae does M. pneumoniae produce, who does it usually affect, and what are some of the sequelae? |
|
Definition
"walking pneumonia"-insidious onset, headache, non-productive cough, diffuse interstitial infiltrates, x-ray looks worse than patient.
-affects people in enclosed spaces such as in prisons or military barracks (usually in patients <30)
-Rare sequelae: Cold-agglutin anemia(↑IgM), Stevens Johnson Syndrome (very rare), and joint pain |
|
|
Term
| What are the treatment options for Tourette's? |
|
Definition
| First-line treatments are typical and atypical anti-psychotics like haloperidol and risperidone, respectively. Can also give clonadine but it shows variable efficacy compared to neuroleptics. |
|
|
Term
| What drug and state its mechanism is used for a benzo overdose? |
|
Definition
| Flumazenil which is a competitive antagonist at GABA benzo receptors. |
|
|
Term
| When administering flumazenil what should you be aware of? |
|
Definition
|
|
Term
| Lab profile for S. pyogenes? |
|
Definition
| Gram (+) cocci in chains, catalase (-), β hemolysis, Bacitracrin Sensitive |
|
|
Term
| What illnesses associated with Strep Pyogenes? |
|
Definition
| Pharyngitis, cellulitis, erysipelas, Rheumatic fever, post-streptococcal glomerulonephritis |
|
|
Term
| Lab profile for strep agalactiae? |
|
Definition
| Group B strep, gram + in chains, catalase (-), β hemolytic, bacitracin sensitive |
|
|
Term
| What illnesses does Strep. agalactiae cause? |
|
Definition
| Neonatal sepsis, neonatal meningitis, neonatal pneumonia |
|
|
Term
| What is the lab profile of enterococci faecalis and what does it cause? |
|
Definition
Gram + cocci in chains(in Strep family), catalase (-), gamma hemolytic (i.e.-no hemolysis), and grows in bile AND 6.5% NaCl (i.e. saline).
-Causes endocarditis after genitourinary procedures |
|
|
Term
| What is the lab profile and what illness does Strep. bovis cause? |
|
Definition
G positive cocci, cat. - gamma hemolytic (i.e. no hemolysis), group D strep, growth in bile but NOT 6.5% NaCl (saline).
-Causes endocarditis asscoiated with colonic malignacy |
|
|
Term
Baroreceptors and responses:
The aortic arch transmits via what nerve and responds to what?
The carotid sinus transmits via what nerve and responds to what? |
|
Definition
Aortic arch transmits via vagus nerve to medulla and responds only to ↑BP
Carotid sinus transmits via glossopharyngeal nerve to solitary nucleus of medulla and responds to ↑ or ↓ in BP
|
|
|
Term
| What is dobutamine used for and what are it's effects? |
|
Definition
Dobutamine is used for acute heart failure associated with decreased myocardial contractility (e.g. cardiogenic shock).
-Increases contractility and CO, weakly increases HR and myocardial O2 consumption(don't really want these effects but they are weak), and also increases cardiac conduction velocity which can result in arthymias. |
|
|
Term
| What drugs can cause a lupus like syndrome? |
|
Definition
| Procainamide, hydralazine, and isoniazid |
|
|
Term
| What is the only condition in which you should consider giving a child with a high fever aspirin? |
|
Definition
|
|
Term
| What does a fixed and widely split S2 indicate? |
|
Definition
|
|
Term
| What is one of the main signs of irreversible cell injury? |
|
Definition
| Mitochondrial vacuolization (membrane damage generally indicates irreversible injury) |
|
|
Term
| Is disaggregation of nuclear granules and clumping of nuclear chromatin a sign of reversible or irreversible injury? |
|
Definition
|
|
Term
When should you screen for GBS in gestation?
-In women who culture positive or have had previous children infected with GBS in the past what is the treatment? |
|
Definition
GBS should occur at 35-37 weeks of gestation(vaginal and rectal cultures)
-Treatment of choice remains Penicillin given intrapartum. Ampicillin is an acceptable alternative (while birthing) |
|
|
Term
| What effect do beta blockers have in the kidney? |
|
Definition
| Beta blockers inhibit the production and release of renin from renal juxtoglomerular cells through antagonism of B1 receptors on these cells. This causes inhibition of the renin-angiotensin-aldosterone system. Leads to ↓ vasoconstriction and ↓ Na and water retention |
|
|
Term
| What does this pussy have?[image] |
|
Definition
|
|
Term
| What kind of transmembrane protein is damaged in cystic fibrosis? (i.e. voltage gated, g-coupled, etc.) |
|
Definition
| Its a transmembrane ATP-gated chloride channel |
|
|
Term
| What two drugs are effective in decreasing the long-term mortality rate in patients with heart failure? |
|
Definition
| ACE Inhibitors and Beta blockers (particularly carvedilol) |
|
|
Term
What organism is responsible for infective endocarditis in patients with indwelling catheters or previous valve replacement surgeries?
How is this infection treated? |
|
Definition
S.epidermidis
Treated with vancomycin combined w/ rifampin or gentamicin or both (often resistant to methicllin) |
|
|
Term
What is one of the bacterial genetic mechanisms that the SHiN bugs use?
|
|
Definition
S. pneumo, H. influ., Neisseria (SHiN) have the ability to take up DNA (chromosomal fragments) from the environment→this is known as competence or transformation.
-This is one way for the bacteria that don't have a capsule and are not pathogenic to get DNA that codes for a capsule and thus gain virulence. |
|
|
Term
| How does strep viridans adhere to valve leaflets? |
|
Definition
It uses dextrans which are polysaccarides made by using sucrose as a substrate. Dextrans can facilitate adherence ONLY to previously damaged valves that have fibrin and platelet depositions.
-In contrast S. aureus can attach to healthy valves |
|
|
Term
| If you have a patient with persistent cough and lung infiltrates and you draw blood and place in ice and it agglutinates what should you think of? |
|
Definition
| M. pneumoniae b/c it has IgM cold agglutins. (EBV also associated w/ cold agglutins). Also can run agglutin titers in serum if you suspect M.pneumoniae b/c will be increased in half of patients and will not see this in viral or atypical pneumonias. |
|
|
Term
| Temporal Arteritis is associated with what other condition? |
|
Definition
| Polymyalgia Rheumatica (pain in shoulder and hips often with fever and weight loss) |
|
|
Term
| The 6th aortic arch gives rise to what structure? |
|
Definition
Proximal part of pulmonary arteries and pulmonary to systemic shunt (ductus arteriosus-on left only).
Monic: just think of 6 looking like an upside down P so just flip it over make the P for Pulmonary arteries and Pul. to systemic shunt (ductus arteriosus). |
|
|