ID 1 Light Bulb Points Flashcards
Atypical Organisms:
Chlamydia
Legionella
Mycoplasma Pneumoniae
Mycobacterium TB
Gram Positive Rods:
Listeria monocytogenes
Corynebacterium
Gram Positive Clusters:
Staphylococcus (MRSA,MSSA)
Gram Positive Pairs and Chains (cocci)
Strep. Pneumoniae (Diplococci)
Streptococcus (Pyrogens, enterococcus, VRE)
Gram Negative Cocci:
Neisseria
Gram Negative Anaerobes:
Bacteroides Fragilis
Prevotella
Gram Negative Coccobacilli:
Acinetobacter baumannii
Bordetella Pertussis
Moraxella Catarhalis
Gram Negative Enteric Rods (Gut colonizer)
Proteus mirabilis
E.Coli
Klebsiella
Serratia
Enterobacter Cloacae
Citrobacter
Gram Negative Rods (Non gut colonizing)
Pseudomonas Aeruginosa
Haemophilus Influenza
Providencia
Gram Negative Curled or Spiral Shaped Rods
H. Pylori, Campylobacter, Treponema, Borrelia, Leptospira
What are the common resistant pathogens?
Klebsiella Pneumoniae
Escherichia Coli
Acinetobacter
Enterococcus Faecalis/ Facial (VRE)
Staphylococcus Aureus (MRSA)
Pseudomonas Aeruginosa
“Kill Each And Every Strong Pathogen”
Cell Wall inhibitor MOA agents:
Beta Lactams
Monobactam
Vancomycin
Dalbavancin, Telavancin, Oritavancin
Folic Acid Synthesis Inhibitor Agents:
Sulfonamides
Trimethoprim
Dapsone
DNA/RNA Inhibitor Agents:
Quinolones (DNA gyros, topoisomerase IV)
Metronidazole
Tinidazole
Rifampin
Cell Membrane Inhibitor Agents:
Polymyxins
Daptomycin
Telavancin
Oritavancin
Protein Synthesis Inhibitor Agents:
AMG
Macrolides
Tetracyclines
Clindamycin
Linezolid, Tedizolid
Quinupristin / Dalfopristin
Aminopenicillins are active against:
When put with a beta-lactamase inhibitor:
MSSA and gram negative bacteria (HNPEK) and gram negative anaerobes (B. fragilis)
Extended Spectrum Penicillins when combined with a Beta Lactamase Inhibitor cover:
Streptococci and Enterococci
HNPEK + CAPES (citrobacter, acinetobacter, providencia, enterobacter, serratia) AND PSEUDOMONAS
Names of Natural PCN:
Penicillin V potassium
Penicillin G Aqueous
Penicillin G Benzathine (Bicillin L-A)
Names of Antistaphylococcal PCN:
(MSSA Coverage)
Naficillin
Dicloxacillin
Oxacillin
Names of Aminopenicillins:
Amoxicillin
Augmentin
Ampicillin
Unasyn (ampicillin/sulbactam)
Extended Spectrum PCN Name:
Zosyn (Pipperacillin / Tazobactam)
BBW for Penicillin G Benz:
Not for IV use! (Cardio - respiratory arrest)
SE of PCN:
Hemolytic Anemia
Seizures with accumulation (monitor RF)
Diarrhea
SJS/TEN
Which PCN do not require Renal Dose Adjustments
Antistaphylococcal (Diclo, Nafci,Oxac)
What is important to know about Naficillin?
It is a vesicant!
If extravasation occurs need to utilize COLD packs and hyaluronidase injections
What must IV Ampicillin (Unasyn included) be diluted in?
NS ONLY
in the outpatient setting is used 1st line to treat strep throat and mild non purulent skin injections
PCN VK
First Line to treat Otitis Media and Bacterial Sinusitis?
Augmentin
What is the pediatric dosing of Augmenting in Otitis Media?
90 mg/kg/d (use the lowest dose of clavulanate to decrease diarrhea)
Important points on Dicloxacillin (2)
Covers MSSA only (no MRSA)
NO RENAL DOSE ADJUSTMENT
DOC for endocarditis prophylaxis
Treats H. Pylori
Used in Acute Otitis Media
Amoxicillin
Otitis media peds dose: 80 - 90 mg/kg/d
DOC for Syphilis?
Penicillin G Benzathine (2.4 mil IM x 1)
What is the only penicillin against pseudomonas?
Zosyn (extended infusions maximize T>MIC)
1st generation cephalosporins:
Cefazolin
Cephalexin (Reflex - PO)
Cefadroxil (PO)
typical cephalexin (Keflex) dose:
250 - 500 mg Q6-12 H
2nd Generation Cephalosporins:
Cefuroxime (PO/IV/IM)
Cefoteten (Cefotan IV/IM)
Cefaclor
Cefoxitin
Cefprozil
3rd Generation Cephalosporins:
Cefdinir (PO)
Ceftriaxone (IV/IM)
Cefotaxime (IV/IM)
3rd Generation Cephalosporins (Grp 1)
Cefidinir
Ceftriaxone
Cefotaxime
Cefditoren, Cefpodoxime, Ceftibuten
3rd Generation Cephalosporins (Grp 2)
Ceftazidime (Fortaz)
4th Generation Cephalosporins:
Cefepime
5th Generation Cephalosporins
Ceftaroline Fossil (Teflaro)
Ceftriaxone Contraindications
Hyperbilirubinemic Neonates - causes biliary sludging, kernicterus
Concurrent use with calcium containing IV products (precipitate forms) in neonates (<28do)
Cefotetan contains a side chain called NMTT. What does this side chain cause?
Increased risk of bleeding and causes a disulfiram like reaction with alcohol consumption
Ceftazidime/Avibactam (Avycaz) has some activity against some:
CRE
Cefpodoxime (3), Cefuroxime (2), and Cefdinir (3) need to be separated from???
Antacids! (at least 2 hours in short acting H2RAs)
PPI should be avoided
Cephalexin in the OP setting can be used for:
MSSA and Strep
Cefuroxime can be used in the OP setting for:
CAP, Acute Otitis Media
Cefidinir can be used for X in the OP Setting.
Acute otitis media
2nd Generation Cefotetan and Cefoxitin common uses:
Surgery prophy (GI), and anaerobic coverage of B. Fragilis
Common uses of 3rd gen Rocephin and Cefotaxime:
CAP, Meningitis, Spontaneous Bacterial Peritonitis, Pylenophritis
Which generations are active against pseudomonas?
3rd and 4th
Ceftazidime
Cefepime
Who is the only BL that is active against MRSA?
Ceftaroline
Common Uses: CAP and SSTI 9
Carbapenems decrease the serum concentration of what seizure med?
VPA
What are the class effects of Carbamenems? (3 point)
All active against ESBL organisms and Pseudomonas (except ertapenem)
DO NOT USE IN PCN allergy
Seizure risk! (imipenem/cilastatin - Primaxin has the highest risk)
What does ErtAPenem not cover?
PEA
Pseudomonas
Enterococcus
Acinetobacter
What do Carbapenems NOT cover?
Atypicals
VRE
MRSA
C.Diff
Stenotrophomonas
Common Uses of Carbapenem (Doripenem, Imipenem/Cilastatin, Meropenem, Ertapenem)
“Reserved for MDR gram negative infection. If a patient has ESBL THINK CARBAPENEM”
Polymicrobial infections (diabetic foot)
Empiric tx when resistant organisms are suspected
Resistant Pseudomonas or Acinetobacter infections (EXCEPT Ertapenem)
Ertapenem must be diluted in:
Normal Saline!
What are the benefits of utilizing extended interval dosing for AMGs?
Utilizing higher doses lead to higher peaks = less dosing frequency
Pro:
Less accumulation
Lower risk of nephrotoxicity
Decreased $$$
When dosing an AMG for a patient what weight do you use?
Underweight: TBW
Normal: IBW
Obese: AjBW
Common uses of Quinolones:
Pneumonia (not Cipro)
UTI (not moxi)
Intra abdominal infection
travelers diarrhea
Name the respiratory quinolones and why they are classified as this:
Levofloxacin, Gemifloxacin, Moxifloxacin
(Breathy Men Love Girls)
They have S. Pneumoniae activity
Please name the Antipseudomonal Quinolones
Ciprofloxacin
Levofloxacin
Pseudomonas coverage
What Quinolone does not require renal adjustment?
Moxifloxacin
(Moxi isn’t for the girls! - No UTI usage)
What quinolones are 1:1 in IV:PO?
Levofloxacin
Moxifloxacin
What things should we look for in patients profiles prior to starting quinolones? (3 things)
- hx of CVD, low K/Mg, QT , QT prolonging agents
- Do they have seizure history? - AVOID (can increase theophylline levels)
- Avoid in peds
What are counseling points for Quinolones? (~4)
Avoid Sun Exposure
Separate from polyvalent cations (phosphate binders too)
Monitor Glucose
Watch for tendon rupture, neuropathy, CNS/Psych SE
Macrolides:
How much of E.E.S = Erythromycin
400 mg = 250 mg
Common uses for ALL macrolides:
CAP
Alternative for Strep Throat
Common uses for Azithromycin:
COPD Exacerbation
Pertussis
Chlamydia (pregnant patients)
Prophy for Mycobacterium avium
Severe travelers diarrhea
Common Uses for Clarithromycin:
H. Pylori
Why is erythromycin used in gastroparesis?
Increases gastric motility
Do Macropodes cause QTc prolongation?
yes!
Caution in: CVD, decrease Mg/K, other QT drugs
When looking at statins, which are contraindicated with Clarithromycin and Erythromycin?
Lovastatin and Simvastatin
(Due to clarithro + Erythromycin being strung CYP3A4 inhibitors, it can increase the risk of muscle toxicity)
Which tetracycline has noted DILE?
Minocycline
Common uses of Minocycline:
CA- MRSA Skin infection
Acne
Common uses of Doxycycline (a lot)
CA - MRSA Skin infection
Acne
Lyme disease
Rocky Mountain fever
Spotted Fever
CAP
COPD exacerbations
bacterial sinusitis
VRE UTI
Chlamydia
What is the common uses of tetracycline? (1)
H. Pylori
What populations should be avoided in Tetracyclines? (3)
Pregnancy , Breastfeeding , Little Kids <8
Sulfonamides do not have activity against? (4)
A PEA
A: Anaerobes
P: Pseudomonas
E:Enterococci
A: Atypicals
What the common uses of Bactrim: (3)
CA - MRSA skin infection
UTI
Pneumocystis Pneumonia (PCP)
When thinking of the 5:1 ratio of SMX/TMP how much TMP is in the single and double strength tablets?
SS: 80
DS: 160
dosing is done off of TMP
If a patient has _____ deficiency then Bactrim should be avoided due to increased risk of hemolysis.
G6DP
For a patient on warfarin what should be discussed when thinking of using Bactrim?
It increases INR significantly. Use alternative if possible
What are the three lipoglycopeptides?
Telavancin (Vibativ)
Oritavancin (Orbactiv)
Dalbavancin (Dalvance)
What is the BBW with Telavancin? (2)
Fetal risk! ( avoid pregnancy)
Nephrotoxicity
What do lipoglycopeptides (-vancin) falsely elevate?
aPTT, INR, PT
A provider wants to start Oritavancin for a SSTI in a patient that is currently on a Heparin Drip for AFib. What do you say?
Oritavancin cannot be used.
IV UFH cannot be used for up to 120 hours after Oritavancin Administration due to the prolonged interaction with falsely elevating aPTT
When is Metronidazole contraindicated (2 )
1st trimester of pregnancy
Alcohol or Propylene glycol (during or within 3 days after)
increases INR but not a CI
What is the dosing for Nitrofurantoin (frequency)
Macrobid = BID
Macrodantin = QID
A patient’s CrCl comes back at 55 ml/min and the doc wants to start Macrobid for CA-UTI. What do you say?
Nitrofurantoin is contraindicated in CrCl < 60
Two main counseling points for Macrobid (Nitro)
Can make your urine brown
Can cause nausea and stomach cramping - take with food
Drugs for CA-MRSA and SSTI
SMX/TMP
Doxycycline , Minocycline
Clindamycin
Linezolid
Drugs for VRE (E. Facecalis)
Pen G or Ampicillin
Linezolid
Dapto
Cystitis Only: Fosfomycin, Doxycycline, NitroF
Drugs for ESBL gram negative rods
Carbapenems
Ceftazidime/Avibactam (avycaz)
Ceftolozane/Tazobactam (zerbaxa)
Drugs for Carbapenem resistant gram negative rods (CRE):
Avycaz
Colistimethate
Polymyxin B
Drugs for Atypical Organisms:
Azithromycin
Doxycycline
Quinolones
Drugs for Bacteroids Fragilis (anaerobe)
Flagyl
BL /BLI
Cefotetan Cefoxitin
Carbapenems
What drugs (2) require protect from light during admin?
Doxycycline
Micafungin
What drugs are compatible with dextrose only?
Quinupristin / Dalfopristin
Bactrim
Amphotericin B
What drugs are compatible with NS only?
Ampicillin
Unasyn (duh)
Ertapenem
Daptomycin (Cubicin RF)
What drugs are compatible with NS/LR only?
Capsofungin
Daptomycin (Cubicin)