Pediatric antibiotics
Neonatal Infections
- All doses are for patients >2 kg and at least 7 days of age
- Always treat for meningitis until you are sure it is not
Pediatric fever of uncertain source
Neonatal (0-28 days)
- If <14 days, Ampicillin 50 mg/kg/dose AND (Gentamicin 4 mg/kg/dose or Cefepime 30mg/kg/dose)
- If >14 days, Ampicillin 50 mg/kg/dose AND Ceftriaxone^^ 50-100mg/kg/dose
- Acyclovir^ 20 mg/kg/dose
^Acyclovir if:
Neonatal (28-90 days)
- Ampicillin 50 mg/kg/dose AND Ceftriaxone^^ 50-100mg/kg
- Acyclovir^ 20 mg/kg
^Acyclovir if:
Meningitis
MRSA is uncommon in the neonate
- Ampicillin 75mg/kg IV q6hrs PLUS
- Cefotaxime 50mg/kg IV q6hrs OR Gentamicin 2.5mg/kg IV q8hrs
- Per AAP, ceftazidime 50mg/kg IV (q12hr for babies < 8 days of age, q8hr for >7 days old) is a reasonable alternative to cefotaxime, offering virtually the same coverage for enteric bacilli and is FDA approved for all age groups[1]
- If suspecting S. pneumoniae or MRSA, add Vancomycin
- Consider acyclovir for HSV
- Acyclovir 20 mg/kg IV every 8 hours (duration depends on classification)
- If ocular involvement:
- 1% trifluridine, 0.1% iododeoxyuridine, or 3% vidarabine
- Optho consult
- As for any febrile neonate SBI evaluation:
- Ampicillin + gentamycin
- May substitute gentamycin with cefotaxime/ceftazidime
- Ampicillin + gentamycin
Pneumonia (peds)
Newborn
- Hospitalized[2]
- Ampicillin (80-90mg/kg/day) + gentamicin +/- cefotaxime
- Add vancomycin if MRSA a concern
- Add erythromycin (12.g mg/kg QID) if concern for chlamydia
- Ampicillin (80-90mg/kg/day) + gentamicin +/- cefotaxime
- Outpatient[3]
- Initial outpatient management not recommended
1-3 Month
- Hospitalized[4]
- Afebrile pneumonitis
- Erythromycin (10 mg/kg q6) or Azithromycin (2.5 mg/kg q12)
- Febrile pneumonia
- Add Cefotaxime (200mg/kg per day divided q8h)
- Afebrile pneumonitis
- Outpatient[5]
- Erythromycin OR Azithromycin PO
>3mo - 18 years
- Hospitalized (PICU/severely ill)[6]
- Ceftriaxone IV AND Vancomycin AND consider Azithromycin
- Hospitalized (moderately ill)[7]
- Fully immunized: Ampicillin (50mg/kg q6) IV
- Not fully immunized: Ceftriaxone IV
- Outpatient[8]
- Amoxicillin (90 mg/kg divided BID) x 10 days PO
- Some studies have shown that 5 day course may also be adequate treatment
- Alternative: Clindamycin OR Azithromycin OR Amoxicillin-clavulanate
- Amoxicillin (90 mg/kg divided BID) x 10 days PO
Osteomyelitis
- Empiric treatment: Nafcillin 200mg/kg/day IV div Q6 AND cefotaxime 150mg/kg/day IV div Q8 for >21 days.
UTI (peds)
- <2 weeks: Ampicillin 100mg/kg/day IV div Q6 (or Q12 if <7 days) AND gentamicin 3mg/kg/day IV Q24 OR cefotaxime 150mg/kg/day IV div Q8
- 2 weeks - 2 months: Ampicillin 100mg/kg/day IV div Q6 AND cefotaxime 150mg/kg/day div Q8
Neonatal conjunctivitis
Prophylaxis
- Erythromycin 0.5% ointment x1 or tetracycline 1% or silver nitrate 1% x1 topical (rarely used because of its potential for causing chemical conjunctivitis), applied at birth.
Chemical
- Watchful waiting
Gonococcal (onset 2-4 days)
- Cefotaxime 100mg/kg IV or IM OR ceftriaxone 25-50mg/kg IV or IM x1 (not to exceed 125mg)
- Cefotaxime is preferred because it does not displace bilirubin
- Disseminated disease should be suspected until CSF is negative
- Treat mother and partners
- Irrigate eyes with saline (topical antibiotics are insufficient and unnecessary)
Chlamydia (onset 5-10 days)
- Erythromycin ophthalmic ointment plus one of the following
- Azithromycin 20mg/kg PO once daily x 3 days OR
- Erythromycin 50mg/kg PO QD in 4 divided doses x 14 days
- Disease manifests 5 days post-birth to 2 weeks (late onset)
Herpetic (onset 6-14 days)
- Acyclovir 20mg/kg IV q8hr x 14-21d
- Topical antiviral
- Do not give steroids
- Full neonatal sepsis evaluation
- Immediate ophtho consult
Febrile Syndromes/Bloodstream Infections
Pediatric fever of uncertain source (90 days - 36 months)
- Ceftriaxone (50-100mg/kg/dose) AND
- Consider vancomycin (15mg/kg)^^^^
Septic shock syndromes | Bacteremia: S. pneumo, N. meningitidis, H. influenzae (if not immunized) | Replete intravascular volume, maximize delivery of oxygen to tissues. Blood cultures. Ceftriaxone 50mg/kg/day IV/IM Q24 or Cefotaxime 150mg/kg/day IV div Q8 until afebrile x24 hours. |
Toxic shock syndrome: Staphylococcal (less often associated with deep tissue disease), Streptococcal |
Empiric therapy should include clindamycin and beta-lactam until etiology is isolated. Staphylococcal: Most often associated with toxin-producing organism at a mucosal site, may involved disease at a deeper site. Associated with tampon use, wound infection or burns. 5-15% case fatality rate. Rx: Nafcillin AND clindamycin initially. Substitute cefazolin or vancomycin for nafcillin if MRSA suspected. IVIG 1 g/kg may bind toxins, but should be reserved for life-threatening infections. Streptococcal: Invasive disease at a deep site is the rule; deep site infection should be sought aggressively and treated. Defined as isolation of GAS, hypotension, renal impairment, coagulopathy, ARDS and soft tissue necrosis. Associated with erysipelas, Necrotizing Fascitis, secondary infection of varicella. Rx: Once streptococcus is identified, change therapy to penicillin or other ß-lactam antibiotic PLUS Clindamycin. | |
Central line infection | Coagulase-negative Staph (CONS), S. aureus, GN-bacilli, Candida spp. |
Coagulase-negative Staph (CONS): can try to salvage catheter with 10-14 days of therapy (vancomycin), 80% cure rate for exit site infections, 25% if deeper. If S. aureus, Gram-Negative bacilli or Candida: always remove the catheter if possible. S. aureus has a 10% exit site cure rate and 0% deeper infection cure rate if catheter left in. If septic thrombophlebitis, endocarditis, osteomyelitis or repeated positive cultures, ALWAYS remove catheter. |
TPN/Intralipids: as above and Malassezia furfur | Remove catheter and discontinue antimicrobials if possible. If Candida albicans, treat with Fluconazole 6-12mg/kg/day IV Q24 (if >14 days old) x 28 days OR conventional Amphotericin B 1mg/kg/day IV div Q24. If Staph epidermidis, treat with vancomycin and discontinue intralipids. If M. furfur, treat with conventional Amphotericin B. | |
Fever and Neutropenia | Aerobic GNR, Strep viridans, MRSA |
Piperacillin-tazobactam 400mg/kg/day IV div Q6 OR Ceftzidime 150mg/kg/day IV div Q8 OR Meropenem 60mg/kg/day IV div Q8. Consider adding gentamicin if persistently ill-appearing. Consider adding vancomycin if MRSA or coagulase-negative Staph suspected. Consider adding amphotericin B 1mg/kg/day IV Q24 if persistently febrile >5 days on antibiotics. Consider meropenem alone or addition of metronidazole if typhlitis suspected. |
Lyme Disease | Borrelia burgdorferi |
Early rash (erythema migrans), carditic, facial nerve palsy, meningitis/encephalitis, arthritis.
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Rocky Mountain Spotted Fever | Rickettsia ricketsii |
Suspect if fever, rash (95%), petechiae spreading from distal to central. Confirm with antibody titers. Ticks most often in Mid-Atlantic states. Treat empirically and aggressively, can be fatal.
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Ehrlichiosis | Ehrlichia chaffensis or phagocytophilum |
Suspect if febrile, flu-like illness with rash in April-Sept. Leukopenia and thrombocytopenia common. 80% have positive blood smear (HGE only). Dx HME with PCR. Confirm with DFA. Commonly co-infected with B. burgdorferi.
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CNS Infections
Meningitis (peds)
Treatment guidelines based on van de Beek et al[9]
Neonates (up to 1 month of age)
MRSA is uncommon in the neonate
- Ampicillin 75mg/kg IV q6hrs PLUS
- Cefotaxime 50mg/kg IV q6hrs OR Gentamicin 2.5mg/kg IV q8hrs
- Per AAP, ceftazidime 50mg/kg IV (q12hr for babies < 8 days of age, q8hr for >7 days old) is a reasonable alternative to cefotaxime, offering virtually the same coverage for enteric bacilli and is FDA approved for all age groups[10]
- If suspecting S. pneumoniae or MRSA, add Vancomycin
- Consider acyclovir for HSV
> 1 month old
- Ceftriaxone 2gm (50mg/kg) IV BID daily PLUS
- Vancomycin 15-20 mg/kg IV BID daily
- Vancomycin is for resistant Pneumococcus
VP shunt infections
- Empiric therapy: Vancomycin AND Cefotaxime 200 mg/kg/day IV div Q6 OR ceftriaxone 100 mg/kg/day IV div Q12-24
- Always involved neurosurgery in management
- Tailor antimicrobial therapy to culture results
Head, Eyes, Ears, Nose & Throat Infections
Mastoiditis, acute
S. pneumo (22%), S. pyogenes (16%), S. aureus (7%), H. flu, P. aeruginosa R/O meningitis. Surgical debridement as indicated. Transition to PO once clinically improved. Ampicillin-sulbactam 300mg/kg/dau IV div Q6 OR cefotaxime 150mg/kg/day div Q8 OR ceftriaxone 50mg/kg/day Q24 +/- nafcillin 200mg/kg/day IV div Q6 OR clindamycin 40mg/kg/day IV div Q6 or vancomycin x21 days.
Sinusitis, acute
- Amoxicillin 90mg/kg/day x14-21 days.
- Augmentin, cefuroxime or cefdinir if recent antibiotics or chronic sinusitis.
Conjunctivitis
- Adenovirus (types 3, 7)
- AKA pink eye. No treatment needed. Highly contagious. Cold artificial tears may help. NEVER treat with steroids except by an ophthalmologist!
- HSV types 1-2
- Can be sight-threatening. Refer to ophthalmologist immediately! 30-50% recurrence in 2 years.
- Trifluridine OR idoxuridine ophthalmic solution 1 drop Q2-3 while awake x7-14 days.
- Vidarbine ophthalmic ointment Q3 until 1 weeks after healthing.
- S. pneumo, H. flu
- Polymyxin/trimethoprim ophthalmic solution 1 drop Q3 OR polymixin.bacitracin/Neosporin ophthalmic solution 1 drop Q3 x7-10 days.
Dacryocystitis
- Warm compresses and tear duct massage. No antimicrobial therapy usually needed. Oral antimicrobial therapy for more symptomatic infections
Orbital Cellulitis
- Ampicillin-sulbactam 300mg/kg/day IV div Q6 OR cefotaxime 150mg/kg/day div Q8 OR ceftriaxone 50mg/kg/day Q24 AND nafcillin 200mg/kg/day IV div Q6. If any MRSA isolated locally, add clindamycin 40mg/kg/day IV div Q6 OR vancomycin x10-14 days.
Periorbital (preseptal) Cellulitis
- If known entry site: nafcillin 200mg/kg/day IV div Q6 OR cefazolin 100mg/kg/day IV Q8 x7-10 days. If MRSA suspected, Vancomycin OR clindamycin 40mg/kg/day IV div Q6. Oral antistaphylococcal antibiotics for less severe infections.
- Periorbital swelling without cellulitis (often associated with sinusitis): Ceftriaxone 50mg/kg/day IV Q24 OR cefotaxime 150mg/kg/day IV div Q8. ADD clindamycin 40mg/kg/day IV div Q6 for more severe infections of suspicion of MRSA. See 'Head: Sinusitis' for oral therapy options.
Otitis Externa
- Clean canal often.
- Neomycin/Polymixin B +/- hydrocortisone otic drops. Alternate: Ofloxacin or ciprofloxacin solution. For 'swimmers ear' use VoSol (2% acetic acid) to canal.
- Candidal: Fluconazole 5-10mg/kg/day PO Q24 x5-7 days.
Otitis Media
Note: If >2 years, afebrile, no otalgia, borderline exam → consider symptomatic treatment or safety net antibiotic prescription (SNAP).
- Amoxicillin 80-90mg/kg/day div BID or TID x10 days (<2 years) or x5 days (>2 years).
- Augmentin 90mg/kg/day amoxicillin component div BID.
- Cefdinir, cefpodoxime, cefprozil, cefuroxime. Azithromycin (up to 40% resistance in PRSP).
Ludwig's Angina
High risk of respiratory tract obstruction due to inflammatory edema.
- Penicillin G 200,000 U/kg/day div Q6 AND clindamycin 40mg/kg/day IV vid Q6.
- Consider
meropenem, piperacillin-tazobactam OR ceftriaxone if GNR suspected.
Dental abscess
- Clindamycin 40mg/kg/day PO/IV/IM div Q6 or Penicillin G 100,000-200,000 U/kg/day IV div Q6.
Gingivostomatitis
- Acyclovir PO 80mg/kg/day div Q6 x7 days. For severe disease can use Acyclovir 30mg/kg/day IV div Q8.
Bacterial tracheitis
- (Vancomycin OR clindamycin 40mg/kg/day div Q6) AND (Cefotaxime 150mg/kg/day div Q8 OR ceftriaxone 50mg/kg/day Q24). Tailor to cultures.
- Cefuroxime 100-150mg/kg/day div Q8.
Epiglottitis
- Cefotaxime 150mg/kg/day div Q8 OR ceftriaxone 50mg/kg/day Q24. ADD Clindamycin 40mg/kg/day IV div Q6 OR vancomycin if Staph suspected.
Pharyngitis
- Throat: Culture before treating. GAS uncommon in children <3 years. Treatment decrease rheumatic fever 2.8 to 0.2%. Rx as below also for scarlet fever.
- Penicillin V 25-50mg/kg/day PO div TID-QID OR amoxicillin 50-75mg/kg/day div BID-TID x10 days.
- Penicillin G Benzathine 600,000 U IM (<27 kg), 1.2 million U (>27 kg) x1.
- Erythromycin or clindamycin for PCN-allergic patients.
Respiratory Tract Infections
Pneumonia
Newborn
- Hospitalized[11]
- Ampicillin (80-90mg/kg/day) + gentamicin +/- cefotaxime
- Add vancomycin if MRSA a concern
- Add erythromycin (12.g mg/kg QID) if concern for chlamydia
- Ampicillin (80-90mg/kg/day) + gentamicin +/- cefotaxime
- Outpatient[12]
- Initial outpatient management not recommended
1-3 Month
- Hospitalized[13]
- Afebrile pneumonitis
- Erythromycin (10 mg/kg q6) or Azithromycin (2.5 mg/kg q12)
- Febrile pneumonia
- Add Cefotaxime (200mg/kg per day divided q8h)
- Afebrile pneumonitis
- Outpatient[14]
- Erythromycin OR Azithromycin PO
>3mo - 18 years
- Hospitalized (PICU/severely ill)[15]
- Ceftriaxone IV AND Vancomycin AND consider Azithromycin
- Hospitalized (moderately ill)[16]
- Fully immunized: Ampicillin (50mg/kg q6) IV
- Not fully immunized: Ceftriaxone IV
- Outpatient[17]
- Amoxicillin (90 mg/kg divided BID) x 10 days PO
- Some studies have shown that 5 day course may also be adequate treatment
- Alternative: Clindamycin OR Azithromycin OR Amoxicillin-clavulanate
- Amoxicillin (90 mg/kg divided BID) x 10 days PO
Whooping cough
- Erythromycin ethyl succinate 40mg/kg/day PO div QID x14 days (max 2000mg/day). Note: Do not use erythromycin base, which causes excessive GI symptoms.
- Azithromycin (<6 months): 10mg/kg once daily x5 days (max 500mg). Note: Preferred agent for patients <1 month.
Cardiovascular Infections
Endocarditis
Prophylaxis indications Prosthetic cardiac valve or prosthetic material used for cardiac valve repair.
Previous infectious endocarditis.
Congenital heart disease (CHD) - except for the conditions listed below, antibiotic prophylaxis is no longer recommended for any other form of CHD.
- Unrepaired cyanotic CHD, including palliative shunts and conduits.
- Completely repaired CHD with prosthetic material or device, whether placed by surgery or by catheter intervention, during the first 6 months after the procedure.
- Repaired CHD with residual defects at the site or adjacent to the site or a prosthetic patch or prosthetic device (which inhibit endothelialization).
Cardiac transplantation recipients who develop cardiac valvulopathy.
Prophylaxis for oral, dental, respiratory tract or high risk patients with chronic GI/GU infections
- Amoxicillin 50mg/kg PO x1 OR Ampicillin 50mg/kg IV x1, 30-60 minutes prior to the procedure.
- Allergic patients: Clindamycin 20mg/kg PO/IV x1 OR cephalexin 50mg/kg PO x1 OR azithromycin 15mg/kg PO x1.
Empiric therapy, native valves: S. viridans, Enterococci, Staphylococci
By definition includes multiple positive blood cultures, new murmur of valvular insufficiency, emboli and echo evidence of vegetations. Send cultures and target therapy based on results. Vancomycin and Gentamicin pending culture results.
Gastroenterologic Infections
Diarrhea |
Initial Workup: If blood diarrhea or >6 stools/day and febrile then consider stool cultures, fecal leukocytes, electrolytes. Isolation: Contact precautions for diapered or incontinent children. | |
C. difficile |
Suspect if blood diarrhea, cramping develop with recent antibiotic exposure.
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C. jejuni |
Suspect if prominent abdominal pain. Young infants may only have bloody diarrhea. Can have immunoreactive complications such as AIDP, reactive arthritis, Reiter syndrome or erythema nodosum.
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E. coli O157:H7 (Enterotoxin producing, ETEC) |
Suspect if bloody diarrhea, >6 unformed stools/day and afebrile. Causes 36% of bloody diarrhea. Consider CBC and blood smear. If no hemolysis, azotemia or thrombocytopenia after 3 days of illness, risk of developing HUS is low. Antimicrobial therapy may precipitate an adverse reaction. | |
Salmonella |
May cause asymptomatic disease, gastroenteritis, bacteremia, osteomyelitis or meningitis. Exposures to lizards and other reptiles may result in unusual species of Salmonella.
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Shigella |
Suspect if fever, cramps, tenesmus, abdominal pain. Complications include seizures, bacteremia, Reiter Syndrome, HUS (S. dystenteriae;type 1), toxic megacolon and toxic encephalopathy (ekiri syndrome). | |
Yersinia enterocolitica |
Causes mesenteric adenitis, mimics appendicitis. Predisposed by iron overload states (chronic transfusions). Antimicrobial therapies not indicated in normal hosts. | |
Necrotizing Enterocolitis (NEC) | Multifactorial disease, including bacterial invasion (debated). E. coli, Klebsiella, Pseudomonas, Clostridial sp., S. aureus, B. fragilis. |
Bacteremia in 30-50% of cases. Definitive antimicrobial therapy based on culture results. B. fragilis invades gut after several days of age.
Consider adding cefotaxime if CNS involvement cannot be excluded. Consider replacing ampicillin with vancomycin if MRSA/CONS. Consider adding clindamycin if perforation cannot be excluded. |
Peritonitis (bowel perforation or appendicitis) |
Enteric GNR, Bacteroides sp., Enterococcus sp. |
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Peritonitis (peritoneal dialysis) |
Staphylococci, GNs, yeast |
Antibiotic added to dialysate in concentrations approximating those attained in serum for systemic disease gentamicin 8mg/L, Vancomycin 50mg/L). |
Genitourinary Infections
Pyelonephritis
Inpatient: Ceftriaxone 50mg/kg/day IV/IM Q24 OR gentamicin (age based dosing) OR [[TMP/SMX] 8mg/kg/day IV div BID x14 days. Treat IV until defervesces and clinically improved, then transition to PO.
Outpatient: TMP-SMX OR cefixime OR ciprofloxacin (in adolescents); see doses under UTI
UTI
Inpatient: >2 months: cefotaxime or ceftriaxone until taking PO, well appearing → transition to outpatient therapy.
Outpatient: (Infants and Children): TMP-SMX 6-10mg/kg/day TMP component div BID OR cefixime 16mg/kg/day x1 day, then 8mg/kg/day Q24 (max 400mg/dose) OR cephalexin 25mg/kg/dose QID (max 1000mg/dose) x7-14 days. Alternatives: nitrofurantoin, ciprofloxacin, ceftriaxone.
Skin & Soft Tissue Infections
Skin abscess
- OSSA/MSSA - Cephalexin 50-75mg/kg/day PO div TID OR Augmentin 80-90mg/kg/day PO div BID x5-7 days. I&D when indicated.
- If MRSA prevalent or if recurrent abscess, send specimen for culture and sensitivity. Treat with clindamycin 40mg/kg/day IV div Q6 or TMP-SMX 5mg/kg/dose TMP Q6-8. If toxic-appearing, use vancomycin.
Cellulitis
- Start IV: Clindamycin 40mg/kg/day IV div Q6 if high community incidence of MRSA. May use nafcillin 200mg/kg/day IV div Q6 OR cefazolin 100mg/kg/day IV div Q8 if low incidence of MRSA. Transition to PO when stable. If no improvement, change to vancomycin (dose by age).
- PO: Cephalexin 50-75mg/kg/day divided TID OR dicloxacillin 50mg/kg/day PO div Q6. Total duration of treatment 7-10 days.
Erysipelas
- Penicillin G IV, then transition to penicillin V or amoxicillin PO;x10 days.
Impetigo
- Mupirocin topical to lesions TID, cleanse with soap and water. Bathe daily. If extensive, treat with cephalexin PO or amoxicillin-clavulanate x5-7 days.
Omphalitis/Funisitis
- Empiric: Cefotaxime AND clindamycin x10 or more days.
- Funisitis (local infection of cord): cord care, topical antimicrobials.
Paronychia
- Local wound care and I&D unless signs of spreading infection, then consider Augmentin or clindamycin.
Scabies
- Topical 5% permethrin cream, apply to neck down, wash off in 8-14 hours.
- Topical Lindane 1%- Avoid unless treatment failure to permethrin due to risk of neurotoxicity. Many contraindications/precautions!
Staphylococcal scalded skin syndrome
- Nafcillin 200mg/kg/day IV div Q6 OR Cefazolin IV x5-7 days. Consider vancomycin.
Avoid TMP-SMX.
Tinea corporis
- May use one of many topical antifungal agents: Terbinafine 1% cream or gel BID to affected areas; clotrimazole 1% cream, lotion or solution; others include Econazole, Sulconazole, Oxiconazole, Naftifine, Cicloprox, Ketoconazole, Sertaconazle, Moconazole and Tolnaftate. Treat for 14 days. Keep affected areas dry.
Tinea capitis
- Griseofulvin Microsize 10-20mg/kg/day div Q12-24 (max 1000mg/day) OR Griseofulvin Ultramicrosize >2 years 5-10mg/kg/day div Q12-24 x6 weeks] AND Selenium sulfide shampoo twice weekly x1 week as directed.
Necrotizing Fasciitis
- Prompt surgical debridement and cultures. Send for cultures and sensitivities.
- Treat with clindamycin AND Zosyn OR cefotaxime. For proven streptococcal disease, penicillin and clindamycin suffice.
Animal bites | Rabies prone: BATS, feral cats, raccoon, skunk, foxes, coyotes, most carnivores, woodchucks and livestock in certain areas |
Treat all bat and feral cat exposures with both HRIG and Rabies vaccine as below. Otherwise, treat with vaccine and contact public health officials or infection control for advice on whether to treat with HRIG. Monitor animal for 10 days.
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Non Rabies-prone: Rodents, rabbits, hares, squirrels, hamsters, guinea pigs, gerbils, rats, chipmunks and mice usually do not require anti-rabies therapy. Consult public health officials with concerns. Check tetanus status. Consider Augmentin as below. | ||
Cat: Pasteurella multocida, S. aureus |
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Dog: Pasteurella multocida, S. aureu's, Bacteroides, Fusobacterium, Capnophaga |
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Human: Strep viridans;(100%), Staph epinephrine (53%), Cornybacterium (41%), S. aureus (29%), Eikenella, Bacteroides, Peptostrep |
High rates of infection. Do not close open wounds!
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Rat or pig (polymicrobial, Sprillum minus, Streptobacillus) |
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Lymphadenitis |
Localized infection: GAS, S. aureus (MRSA)...less likely anaerobes, M. Tb (scrofula), Toxoplasmosis, Tularemia, Sporotrichosis,;atypical mycobacterial (consider the latter if nonresponsive to antimicrobials) |
MSSA: Augmentin 90mg/kg/day PO div BID OR Cephalexin 100mg/kg/day PO div QID x10 days. If IV needed, cefazolin 100mg/kg/day IV div Q8. MRSA: Clindamycin OR TMP-SMX OR linezolid OR vancomycin (age based dosing) x7-10 days total. |
Cat-scratch disease: Bartonella henslae |
Lymphadenitis common in axillary/epitrochlear nodes (46%), neck (26%), inguinal (17%). Treat for immunocompromised host of signs of systemic illness;(HSM).
May also use Bactrim, rifampin and ciprofloxacin. Duration of therapy is uncertain. |
Orthopedic Infections
Osteomyelitis
Risk Factor | Likely Organism | Initial Empiric Antibiotic Therapy' |
Elderly, hematogenous spread | MRSA, MSSA, gram neg | Vancomycin 1gm + (Piperacillin/Tazobactam 3.375 grams OR imipenem 500mg) |
Sickle Cell Disease | Salmonella, gram-negative bacteria | Ceftriaxone 50mg/kg IV once daily OR Cefotaxime 50mg/kg IV three times daily, PLUS
|
DM or vascular insufficiency | Polymicrobial: Staph, strep, coliforms, anaerobes | Vancomycin 1gm + (Piperacillin/Tazobactam 3.375 grams OR imipenem 500mg) |
IV drug user | MRSA, MSSA, pseudomonas | Vancomycin 1gm |
Newborn | MRSA, MSSA, GBS, Gram Negative | Vancomycin 15mg/kg load, then reduce dose, AND ceftazidime 30mg/kg IV q12 h |
Children | MRSA, MSSA | Vancomycin 10mg/kg q6 h AND ceftazidime 50mg/kg q8hr |
Postoperative (ortho) | MRSA, MSSA | Vancomycin 1gm |
Human bite | Strep, anaerobes, HACEK organism | Piperacillin/Tazobactam 3.375gm OR imipenem 500mg |
Animal bites | Pasteurella, Eikenella, HACEK organism | Piperacillin/Tazobactam 3.375gm OR imipenem 500mg |
Foot puncture wound | Pseudomonas | Anti-pseudomonal, staph coverage |
Septic Arthritis
- If immunized against Hib: Nafcillin 200mg/kg/day IV div Q6 OR cefazolin 100mg/kg/day div Q8 x21 days.
- If unimmunized again Hib: Cefuroxime OR cefotaxime AND nafcillin OR cefazolin x21 days.
- If Gonococcus suspected or isolated, ceftriaxone 50mg/kg/day IV/IM daily OR penicillin G IV (if susceptible) x7-10 days.
See Also
Antibiotics by diagnosis
- Bone and joint antibiotics
- Cardiovascular antibiotics
- ENT antibiotics
- Eye antibiotics
- GI antibiotics
- GU antibiotics
- Neuro antibiotics
- OB/GYN antibiotics
- Pulmonary antibiotics
- Skin and soft tissue antibiotics
- Bioterrorism antibiotics
- Environmental exposure antibiotics
- Immunocompromised antibiotics
- Post exposure prophylaxis antibiotics
- Pediatric antibiotics
- Sepsis antibiotics
- Arthropod and parasitic antibiotics
For antibiotics by organism see Microbiology (Main)
References
- ↑ https://www.aappublications.org/content/early/2015/02/25/aapnews.20150225-1
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ van de Beek D. et al. Advances in treatment of bacterial meningitis. Lancet. Nov 10 2012;380(9854):1693-702
- ↑ https://www.aappublications.org/content/early/2015/02/25/aapnews.20150225-1
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014
- ↑ Sanford Guide to Antimicrobial Therapy 2014