ID3 Flashcards
Emp Abx for pts 1-23 months 2
- Ceftriaxone or cefotaxime
- Vanc
Nitrofurantoin Contraindication
CrCl < 60
What drug has no activity against the 3 Ps?
Pseudomonas
Proteus
Providencia
Tigecycline
Empiric tx for CAP when patient has no recent abx use?
Macrolide or Doxy
Gonorrhea Tx:
What is not recommended?
Ceftriaxone + Azithromycin (Preferred) or doxy
250 mg IM x 1 for cef
Monotherapy is not recommended
In the intensive phase how long is RIPE therapy
8 wks
Weights to use for AGs?
Underweight < IBW use actual
Obese use adjusted
What drug is rec’d for all categories of HAP or VAP?
Zosyn
What are the common uses for Minocycline and Doxy
CA-MRSA skin infections, acne
Severe ICU patients Peritonitis and Cholangitis
What pathogens to cover? 12
- PEK
- CAPES
- Pseudomonas
- Anaerobes
- Strepto
- +- enterococcus
Symptoms of syphillis
painless smooth genital warts (chancre)
Metronidazole SE
Metallic taste
What Abx’s can increase INR? 6
Tigecycline
Metronidazole
Telavancin ortivancin false elevation in both aPTT and INR
Bactrim
Tetracyclines
Quinolones
What is the main drug for Rocky mountain spotted fever, typhus, lyme disease and Ehrilichiosis
Doxy
Rocky: 5-7 days
Typhs 7 days
Lyme 10-21
Ehrlith: 7-14
Absess Perulent Infections
Treatment 2
Commly caused by CA-MRSA
Bactrim
Doxy
Bactrim dosing for Uncomplicated UTIs?
1 DS tab PO BID x 3 days
Tigecycline boxed warnings and what should it not be used for?
- Increased risk of death
- Not for blood stream infections
When are IV Abxs preferred in CAP patients?
What are the preferred beta lactams?
Preferred macrolides?
What if the patient has risk factors for pseudomonas?
What about MRSA?
- IV abx for patients in the ICU
- Ceftriaxone, cefotaxime
- Azithromycin
- Pseudomonas: Zoysn, cefepime, or meropenem + either levo or an AG and Azithromycin
- If MRSA: add vanc or linezolide
Treatmetn for Pharyngitis?
PCN, Amox
Meng pt with severe PCN allergy
Quinolones
moxi or levo
What is the treatment and durtation for conuation phase
2 drugs for 4 months
INH and RIF if susceptible
More Severe SSTIs needing IV abx or Hospitalization cover what 2 things? and what are the 3 main drugs?
- Cover MRSA and Streptococcus
- Vanc
- Linezolid
- Daptomycin
Abx for COPD exacerbation?
Amox/clav
Common pathogens for meningitis in patients <1 months
- S. Agalacticae
- E. Coli
- Listeria
- Klebseilla
How is syphillis diagnosed?
Rapid Plasmin Reagen Also called the Vinereal Disease Research Lab
CMV
Preferred 2
Alt and why
Secondary prophy
- Valacylovir, ganciclovir
- ALt: If toxicity to gan or resitant: foscarnet, cidovir
- No agent recd for secondary keep CD4> 100
Isoniazid INH
SEs
- Peripheral neuropathy give with pyridoxine 25 mg PO qday
- Monitor S/Sx of DILE
2 drugs that only covers E. faecalis?
Pen G or Amp
Max dose of conventional ampho B
Black Box: Not exceed 1 .5 mg/kg /day
How to you confirm the Dx of Active TB?
Skin test likely means active but need to confirm with a sputum culture AFB stain
Definitive With PCR slow growing
What 3 drugs are always used in combination with other antipseudomonal meds?
Colismethane, Polymxyin, AGs
Fidaxomicin warnings?
Not effective in systemic infections
What latent TB regimen is not rec’d for HIV, children < 2 or pregnant women
INH and Rifapentine
Bactrim Coverage? 2 sets
What type? 8 main
What 4 things are not covered?
- Broad gram negative bacteria and some oppurtunistic infections
- Gram Negative: Haemaphilus, Proteus, Klebsella, E. Coli, Enterobacter, SHigella, salmenella, Stenotrophomonas
- Opp: Pneumocytis, Toxoplasmosis
- DOES NOT COVER: Pseudomonas, Enterococci, atypicals or anaerobes
When someone is on roids what is the criteria for them to be considered immunocompromised?
systemic roid for 14 days or longer at pred dose >= 20 mg/day or >= 2 mg/kg/day
Nitrofurantoin counseling
Take with food to prevent nausea and cramping
can discolor urine brown
Cryptococcal meningitis
Induction Therapy
Alternative Reg
Secondary PRophy
Ampho B + flucytosine
Alt: Fluconazole +- flucytosine
Secondary prophylaxis low dose fluconazole
Tx duration for pharyngitis?
10
5 days for azithro
Other treatment options for Travelers Diarhea if dysentary not present not pregnant and pediatric
Cipro 3 days
Levo x 1 or daily 1-3 days
Ofloxacin 400 PO x 1 or BID x 3 days
Rifaximin TID x 3 days
Cellulitis Non-purulent infections
Cephalexin 500 mg QID
Second line tx for sinusitis failure of first
Oral 2nd or 3rg gen cephs + clinda, doxy or Resp FQ
Chlamydia Tx:
Azithromycin 1 gram PO x 1
or Doxy
First line tc for sinusitis?
Amox/clav
Preferred Treatment for Travelers Diarrhea if fever, Blood is present or pregnant or pediatric
Azithromycin 1000 mg PO or 500 mg PO daily 1-3 days
Mild to moderate Peritonitis and Cholangitis
What to cover? 6
- PEK
- Anaerobes
- Strepto
- +- enterococcus
Tigecycline coverage? 5
MRSA, VRE, g(-), anaerobes, and atypicals
What patients are at risk of IE during dental procedures? 4
- Prosthetic heart valve or heart valve repair with artificial material
- Hx of endo
- Heart transplant with abnormal heart valve function
- Certain congenital heart defects including heart/lung valve disease
PCP Tx
duration
alt
Prophy
- Bactrim +- pred
- For 21 days
- ALt: pentamidine IV
- Secondary Bactrim
Nitrofurantoin warnings? 2
Hemolytic anemia found through positive coombs test
caution in pts with G6DP Def
Duration of treatment of DM foot infections
4 total
- 7-14
- More severe: 2-4 wks
- Bone and joint: 4-6 wks
- Osteo longer
Empiric treatment for mengigitis in pts < 1month
2 drugs and an or
Amp (listeria coverage)
Cefotaxime (not cetriaxone)
or gentamicin
Other drugs besides Ceftriaxone that can be used for primary or secondary prophylaxis of SBP?
- Bactrim
- Cipro
Metronidazole contraindications?
2
Pregnancy in the first trimester
Alcohol or propylene glycol contain products during treatment within 3 days of tx dc
Latent TB Tx
3 possible
- Isoniazid 300 mg max 900 for 9 months
- Rifampin 4 months
- INH + rifapentine q wk for 12 wks
Different treatments for each phase of syphillis
Primary, secondary or early latent?
Latent > 1 y or unknown duration
Neurosyphilis including ocular and congenital
What is the treatment and duration for alternatives?
- PEN G benzathine 2.4 million units IM x 1
- PEN G Benzathine IM wkly for 3 wks
- Pen G aqeous, Alternative Pen G procain
HAP risk factors for MRSA or MDR Pseudomonas
IV Abx within the past 90 days
Emp meng tx for patients 2 -50?
Ceftriaxone 2 g q12
Cefotaxime 2 g q4-6
+ vanc 30-45mg/kg/day
Primary Prophylaxix in pts with HIV
MAC:
CD4 < 50
Preferred Azithro 1200
CD4 > 100 for >= 3 months on ART
A TST is also called what?
A purified protein derivative test
Drug interaction wiht metronidazole?
Warfarin Increase INR
Pyrazinamide SEs
Causes increased uric acid dont use with acute gout
When can a false positive TB skin test occur?
When a patient has received the BCG vaccine
CAP risk of S.pneumo?
Drug choices
3
potential
Beta lactam (Amox high dose, Amox/clav, Cefpodoxime, cefdinir, cefuroxime, or ceftriaxone) + macrolide or doxy
Potential monotherapy with respiratory FQ moxi, levo gemi
Rifampin and INH admin and risks
- Take on an empty stomach
- Risk of hemolytic anemia through positive coombs test
Trichomoniasis Tx and CDC recs
- Metronidazole 2 grams PO
- CDC recs Metro in all trimesters
What drug used to treat MDR g(-) pathogens in combo with other drugs has dose dependent nephrotoxicity?
Colistimethate
DM foot infections
Anaerobic G(+) 2
Aaerobic G (-) 1
- Peptostrepto
- Clostridium Perfringes
- B. Fragilis
What is ciprofloxacin not used for?
Pneumonia not a respiratory FQ and does not have reliable coverage against S. pneomo
What drugs need increased dosing interval in renal impairment?
For TB drugs
Ethambutol and Pyrazinamide
MAC crtieria treatment and DC
And drug treatment and duration
- CD4 < 50 must rule out active disseminated DX
- Preferred Azithromycin 1200 mg PO weekly
- CD4 > 100 for >= 3 months on ART
MAC
Clarithromycin or Azithromycin + ethambutol
Alt: Add a 3rd or 4th agent using rifabutin, amikacin, or streptomycin, moxi or levo
secondary prophylaxis is the same as primary tx
Common Cold MCPs 2
Influenza 1
Pharyngitis 2
Sinusitis 7
- Resp Virus: Rhinovirus and coronavirus
- Infuenza
- Resp viruses and S. Pyrogenes
- Resp viruses, S. Pneumo, H. Flu, M. Mat, staphylococcus, anaerobes, and g (-) rods
Gonorrhea and Chlamydia?
Gonorrhea: Ceftriaxone 250 IM
+
Azithromycin 1 gram or doxy 100 mg BID x 7 (These treat chlamydia too)
Primary Prophylaxix in pts with HIV
Toxo
- <100 Toxo IgG +
- Preferred Bactrim
- Alt dapson + pyrimethamine + leucovorin
- DC when CD4 > 200 for > 3 months on ART
Community Associated MRSA SSTIs drugs 3
- Bactrim
- Doxy
- Minocycline
Bacterial Vaginosis Tx
WHat should pts not do?
Metro or
Metro 0.75% gel
Pts should not douche
What regimen is recommend for HIV, pregnant and children? and for what?
INH: 300 mg per day max 900 per dose
9 months for Latent TB
Preferred beta lactam for CAP when patient has risk of S. Pneumo?
Ceftriaxone or cefotaxime + azithromycin
Metronidazole Interactions?
Weak 3A4 and 2C9 inhibitor
When should you take a trough for AGs?
right before or 30 min before the
Peak 30 minutes after
What drugs are used for E.Faecium and E. Faecalis? 6
- Dapto
- Linezolid
- Tigecycline
- Cystitis only: Nitro, fosgomycin and doxy
Tx of syphillis
What about pregnant patients?
- Pen G 2.4 millions units IM wkly for 3 wks if latent >1 yo or tertiary
- Bicillin L-A dont sub with the C-R
- Alternative Doxy 100 mg PO BID or tetracycline PO QID
- Pregnant patients with PCN allergy should be desensitized and use L-A
patient at high risk for pseudomonas CAP what should be added?
Zosyn
and If MRSA concern Vanc or linezolid
Rifampin Info? 3 SEs and other things
- Orange bodily secretions
- Strong CYP inducer (rifabutin can be used instead due to drug interactions
- Cause flu like symptoms
Toxo Gondi
Treatment regimen not prophylaxis
Pyrimethamine + leucovorin + sulfadiazine
Alt: Bactrim
Same as tx but at reduced dose
What does ethambutol cause? 2
Visual changes
Hallucinations/confusion
12 total drugs that cover pseudomonas?
- Zosyn
- Cefepime
- Ceftazidime
- Caftaz/Avibactam
- Ceftolozane/Tazobactam
- Carbapenems but not Ertra
- Cipro, Levofloxacin
- Aztreonam
- AGs
- Colistimethate, polymyxins
What quinolone should not be used in UTIs and why?
Moxifloxacin: not enough conc in urine
WHen should IV abxs be admin for surgical prophylaxis?
Cefazolin and Cefuroxime ( 1hour before surgery)
If using quinolones or Vanc 120 minytes before
Mild to Moderate Peritonitis and Cholangitis
5 possible regimens
- Cefoxitin
- Ertrapenem
- Moxi
- Cefazolin, cefuroxime or ceftriaxone + metro
- Cipro or Levo + metro
Lyme Disease vs Ring Worm?
Lymre: bacterial: Bullseye rash DX ELISA, DOxy
Ringworm: Fungal: 1+ reddish raised rings: tx with clotrimazole or other topical
What is the DOC for uncomplicated UTIs?
Nitro
3 most common pathogens of CAP?
When do you use cipro?
- S. Pneumo
- H. INflu
- M. Pneumo
Never use cipro not a resp FQ and does not cover S. Pneumo relialbly
Drugs that cause QT prolongation Abxs
FQs
Macrolides
Impetigo
Honey COmb Crust
First choice
If numerous lesions
- Mupirocin (Bactroban) ointment
- Cover MSSA if systemmic: Cephalexin (Keflex)
What drug is added for meng tx in patients <1 month and > 50
Ampicillin for Listeria coverage
Drugs that cover atypical organisms? 3
Azithro
Doxy
Quinolones
Dificid
Fidaxomicin
5 common pathogens in mengitis
- S. Pneumo
- N. Meningitis
- S agal
- H flu
- E. COli
Macrobid and Macrodantin Dosing
Dantin QID
Macrobid 100 mg BID x 5 days
DM Foot infections
G (+) Pathogens
4
G (-) 5
- S. Aureus Including MRSA
- Group A Strepto
- Viridan group strep
- S. Epidermidis
- E. Coli
- Klebsiella
- Proteus
- Enterobacter
- Pseudomonas
RIPE Therapy for Active TB
All RIPE drugs cause what 2 things?
Increase LFTs, including total bilirubin
Primary Prophylaxix in pts with HIV
PCP Indication for proph
Tx regimen preferred and Alt (2 sets)
Criteria to DC
- CD4 < 200
- Preferred Bactrim DS
- Alt: Dapsone or Dap +pyrimethamine + Leucovorin
- DC when CD4 >= 200 for >= 3 months on ART
Adult prophylaxis regimens for Pts at risk of IE during dental procedure?
3 options
- Oral: amox 2 g 30-60 min before procedure
- Cant take oral: Amp 2 g or cefazolin 1 g
- Can take oral but PCN allergy:
- Clindamycin 600
- Azithro or clarithromycin 500
First line abx tx for Acute Otitis media What is the dosing?
- Amoxicillin 80-90 mg/kg/day in 2 divided doses
- Amox/clav 90 mg/kg/day if pt has gotten Amox in the past 30 days