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Febrile Neutropenia
Overview
40
Astronomy
2nd Grade
05/01/2014

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Term
Febrile Neutropenia Pathogens
Definition
increasing prevalence of gram-positive; improved abx w/ gram - coverage, abx resistance among gram positives, increased use of central venous catheters, chemo-related mucositis
Term
Febrile Neutropenia most common organisms
Definition
S. aureus; MRSA; coag (-) staphyloccous; strep pneumonia; strep viridans; enterococcus
Term
Febrile neutropenia most common gram-negative rods
Definition
e. coli, klebsiella spp, pseudomonas aeruginosa
Term
Febrile neutropenia: what about fungal organisms?
Definition
assess risks; Prolonged febrile neutropenia (>7 days), broad spectrum abx or steroids (> 6 das), history of fungal infections, bone marrow transplantation, usually don't need to consider until 5-7 days
Term
febrile neutropenia: common fungal infections
Definition
candida spp. 65%; aspergillus spp. 30% (more common in HSCT)
Term
febrile neutropenia: anaerobic bacteria (mixed infections)
Definition
abscess, GI malignancy
Term
febrile neutropenia: viral- reactivation of latent infection
Definition
herpes simplex, varicella zoster, cytomegalovirus (CMV)
Term
febrile neutropenia: pneumocystis jiroveci (PCP)
Definition
prolonged neutropenia (> 1 month), allogeneic HSCT, acute lymphocytic leukemia (ALL)
Term
Febrile Neutropenia: General Principles of Treatment
Definition
Chemotherapy dose reduction or delay for the 2nd chemo cycle; infection control; cultures; broad spectrum abx; monitor cultures and response closely; search for source; mortality increases the longer abx are withheld
Term
Infection control
Definition
hand washing; IV access care; no fresh fruit or flowers
Term
Cultures
Definition
blood cultures x 2 prior to abx, pan-culture: blood, lines, sputum, urine; others if indicated (i.e. stool, infection site)
Term
Broad spectrum antibiotics
Definition
start antibiotics ASAP in full/aggressive doses, adjust for renal/hepatic impairment, up to 70% mortality if delayed
Term
Common Sites of Infection
Definition
lung, pharynx, lower esophagus, perineum, anus, skin, eye, vascular access sites, bone marrow aspiration sites, nail beds
Term
initial regimen: low risk
Definition
oral antibiotics are a possibility: Ciprofloxacin + amoxicillin/Clavulanate
Term
initial regimen: high risk
Definition
IV antibiotics are needed; monotherapy vs dual/combo therapy, addition of vancomycin
Term
High Risk Patients
Definition
Profound neutropenia (ANC < 100) anticipated to last for > 7 days); presence of comorbid medical problems; evidence of hepatic or renal insufficiency
Term
Low Risk Patients
Definition
found most commonly among patients with solid tumors receiving outpatient chemo
Term
Neutropenia
Definition
High risk: profound (<100), prolonged ( > 7-14 days)- Low Risk: ANC > 100, short duration (<7 days)
Term
Malignancy and Treatment
Definition
High risk: hematologic, relapsing, allogeneic HSCT; Low Risk: solid tumor, remission, conventional chemo
Term
Co-morbidities
Definition
High risk: substantial, poor performance status; Low RIsk: none
Term
Clinical Status
Definition
High risk: unstable, poor performance status; Low Risk: stable, no identified focus of infection or simple infection
Term
Age
Definition
High risk: > 60 years old; Low Risk: < 60 years old
Term
Therapy
Definition
high risk: hospitalize for IV antibiotics; Low risk: PO or IV abx, outpatient therapy if respond
Term
Oral Regimen Inclusion Criteria
Definition
Use only in low risk patients or as step down therapy for moderate risk patients, Patients must be compliant- have a strong support system or caregiver and be in close proximity to hospital
Term
Oral Regime Preferred
Definition
Ciprofloxacin 500-750 mg PO BID PLUS Amoxicillin/Clavulanate 500 mg PO q 8 hours
Term
Appropriate IV Monotherapy
Definition
Ceftazidime or CEfepime or Carbapenem (not Ertapenem) or Piperacillin/tazobactam
Term
IV monotherapy Advantages
Definition
comparable efficacy to other regiments, decreased drug toxicities, less expensive
Term
IV monotherapy inclusion criteria
Definition
patients who MRSA is NOT suspected, patients NOT as risk for multi-drug resistant (MDR) bugs
Term
IV monotherapy drawbacks
Definition
limited gram positive coverage, may increase selection of resistant organisms, no additive/synergistic effect, increased colonization
Term
Appropriate Dual IV Therapy
Definition
Aminoglycoside PLUS zosyn or cefepime or ceftazidime OR carbapenem; DO NOT combine 2 beta-lactams
Term
IV Dual Therapy Advantages
Definition
optimal coverage for Pseudomonas aeruginosa, Bactericidal: decreased rate of bacterial resistance; synergistic activity
Term
IV Dual Therapy Inclusion Criteria
Definition
patients at risk for multi-drug resistant (MDR) pathogens
Term
IV Dual Therapy Drawbacks/cautions
Definition
increased risk of renal toxicity, limited gram positive coverage, requires monitoring therapeutic drug levels
Term
Indications for adding vancomycin
Definition
suspected catheter-related infections; positive blood cultures showing gram positives; known colonization with resistant bugs; chemo-related severe mucositis; quinolone prophylaxis prior to febrile neutropenia; hypotension or CV impairment; clinical deterioration or persistent fever
Term
Vancomycin alternatives (not routinely recommended)
Definition
Linezolid (gram positive, including VRE), Daptomycin (covers gram +, including VRE, not for use in pneumonia); Ceftaroline: relatively new cephalosporin, not data on NF
Term
Antifungal agents
Definition
fluconazole, voriconazole, caspofungin, ampho B
Term
adjunct therapy
Definition
colony stimulating factors (CSF); sitmulates immune system to make neutrophils; believed to decrease duration of feer, severity and extent of neutropenia, decreased hospitalization; CSF is not routinely used as adjunct therapy
Term
Antibiotic Prophylaxis
Definition
quinolones, TMP/SMX; 85% infections stem from GI or skin, controversial: efficacy versus resistance
Term
Anti-fungal Prophylaxis
Definition
should not be used routinely in all pts with neutropenia; Azoles, enchinocandina, camphotericin
Term
CSF Prophylaxis
Definition
prevention of neutropenia, is not routinely recommended in neutropenic patients; IF used: do not start until 24 hours after chemo dose
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