Management of neutropenic fever in cancer patients Prof Hamdy Zawam
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Management of neutropenic fever in
cancer patients
Dr. Hamdy M. ZawamProfessor of Clinical OncologyNEMROCK Cairo University
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Risk of Infection in Cancer PatientInfection is a major health
problem in cancer patients :1. Mortality : 40,000 adult cancer patients
treated in large US hospitals : MR 9.5% MR: 21.4% in patients with more than
one comorbidity2. Morbidity3. Cost 4. Treatment results
(Kuderer, et al., Cancer 2006,106:2258)
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Factors predisposing to infection in cancer patients:
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A) Tumor related factors:1) ↓ Immunity with hematological
tumor:BM infiltration e.g. leukemia, lymphomaHypogammaglobinemia e.g. MM, CLLImpaired cellular immunity e.g. HL, HCL
2) Solid tumorsOvergrowing blood supply → necrosis &
infectionCompression
Post-obstructive pneumoniaGUT or hepatobiliary obstruction by abdominal tumors
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B) Therapy-related:1) BM exhaustion (Multiple lines of ttt).2) Post-op complication for solid tumor surgery.3) Disruption of mucosal barriers by CTX or RTH.4) Functional asplenia → splenectomy, RT, GVHD.5) High dose steroids → ↓ neutrophils.6) Lymphocyte depleting agents:
Fludarabine → viral & opportunistic infection Alemtuzumab → CMV Rituximab → PML, HBV reactivation Bortezomib → HZV reactivation
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Neutropenia
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Neutropenia Major risk factor for serious infections.The lower limit of neutrophils =
2000/mm3
Neutropenia criteria:
Profound neutropenia : ANC >100 cells/mm3
Facilitates bacterial and fungal infections.Blunts inflammatory response allowing
infection to progress much faster
Grade I II III IVCount
per mm3
1500-2000
1000-1500
500-1000
<500
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Neutropenia Grade + Duration + Associated comorbiditiesDuration : the risk of fungal
infection increases with the duration of neutropenia
Other factors : why?
( Kruderer, et al., 2006)
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Risk of Infection Category In Cancer Patient
Category Low Intermediate High
Expected period of neutropenia
< 7 days 7-10 days > 10 days
Disease/ Therapy
Standard CTX for solid tumors
o Autologous SCT
o Lymphomao Multiple
myelomao CLLo Purine
monotherapy
o Allogenic SCTo Acute Leukemia:
• Induction• Consolidatio
no Purine
combinationo Alemtuzumab
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Prophylaxis Against Infection
The most important issue is: How to prevent infection?
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1)ANTIBACTERIAL PROPHYLAXIS:
a) Fluoroquinolones ( FQL): The most commonly used in adult patients . In a meta-analysis that evaluated 18 trials
(N=1408): FQL (ciprofloxacin) significantly reduced the
incidence of Gram-negative infection (RR=21%;95% CI, 0.12-0.37)
FQL prophylaxis did not affect : Infection related mortality Rate of Gram +ve and fungal infections Viridans group streptococcal bacteremia breakthrough have been associated with ciprofloxacin prophylaxis.
(Bucaneve et al )
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b) Levofloxacin Used in patients with intermediate
to high risk for neutropenia .Levo recepients had lower rate of
microbiologically documented infections, bacteremias, and single-agent Gram -ve bacteremias than placebo group .
(Bucaneve et al )
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c) Prophylaxis for Pneumocystis jirovecii (carenii)
ALL (1) Alemtuzumab (1)Recipients of purine analog therapy
(2B)Recipients of prolonged
corticosteroids or temozolomide + RT (2B)
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NCCN for Antibacterial Guidelines :FQL prophylaxis (Levo is
preferred) for patients with expected duration of neutropenia ( ANC <1000) for more than 7 days .
TMP/SMX for patients at risk for P.Jirovecii
(When selecting antimicrobial agent for prophylaxis, consideration should be given to the local susceptibility and resistance patterns of pathogens)
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2) Antifungal prophylaxisIndications for antifungal prophylaxis:
i. ALL → Fluconazol.ii. MDS → Posaconazol, or Fluconazol.iii. AML → Posaconazol, or Floconazol.iv. Autologus SCT with mucositis until
resolution of neutropenia.v. Secondary prophylaxis in patients
with prior fungal infection.
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Should not be used routinely in all patients with neutropenia
Prophylaxis with posaconazol, Itraconazol and voriconazol should be avoided in patients receiving vinca alkaloid–based regimens:Inhibition of P450 3A4 isoenzyme
reduce the clearance of vinca alkaloids and can produce severe neurotoxicity.
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3) Antiviral ProphylaxisHepatitis B Virus
Reactivation of latent HBV may occur in the setting of significant immunosuppression.
HBV carries with lymphoid malignancies, especially those treated with anthracyclin–based regimens, have a high risk of HBV reactivation.
Anti CD 20 monoclonal antibodies may have increased risk of HBV reactivation and rare instances of fulminant hepatitis or death.
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Routine surveillance for HBV DNA and antiviral prophylaxis with lamivudine (or preemptive therapy upon detection of high levels of HBV s Ag or positive HBV DNA load): recommended in HBsAg-positive or
HBcAb-positive patients wit hematologic malignancies
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Prophylaxis With Hematopoietic Growth FactorsHGFs should only be used for primary
prophylaxis of chemotherapy-induced neutropenia in the following situations:1. Risk of FN ≥20%2. Patients with reduced marrow reserve due
to radiotherapy of >20% of marrow.3. HIV+ve.4. Patients aged ≥65years treated with
curative regimens.5. When a reduction in the dose of
chemotherapy is deemed detrimental to outcome.
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Caution with HGF:Primary prophylaxis with G-CSF is not
indicated during chemoradiation of the chest due increased of BM suppression associated with increased risk of complications and death.
HGFs should not be given immediately before or with chemotherapy.
Should not be used in patients with infection not related to neutropenia.
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Secondary prophylaxis HGF can be used for secondary prophylaxis of FN in the following situations:
1. When it is anticipated that further infections during the next cycles could be life threatening.
2. When the reduction in chemotherapy dose required to avoid neutropenia is below the efficacy threshold.
3. Lack of protocol adherence that compromises cure rate, OS ,or DFS.
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Environmental precautionsHand hygiene is the most effective
means of preventing transmission of infection
Standard barrier precautions should be followed for all patients
Plants and dried or fresh flowers should not be allowed in the rooms of hospitalized neutropenic patients
Special precautions for transplant recipients .
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Neutropenic Fever
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Definition of Neutropenic Fever An absolute neutrophil count <500 or <1000 with a predicted rapid
decline to 500 within 48 hrs+
A single oral temperature >38.3̊ C or 38̊ C persistent for >1 hr
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Risk StratificationThe Multinational Association for Supportive Care (MASCC) index
Score >21→ low risk of complication Score <21→ high risk of complication Maximum theoretical score of 26 One of the major drawbacks of MASCC is “Burden of illness“
Characteristic Score
Burden of illness: no or mild symptoms 5Burden of illness: moderate symptoms 3
Burden of illness: severe symptoms 0No hypotension (systolic BP >90 mmHg) 5
No chronic obstructive pulmonary disease 4Solid tumor/lymphoma with no previous fungal
infection4
No dehydration 3Outpatient status (at onset of fever) 3
Age <60 years 2
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Other Risk Factors For Febrile Neutropenia
This risk model was based on 1246 patients with NHL: Age > 65 Albumin < 3.5 Baseline ANC < 1500 Hepatic disease Relative dose intensity
(e-eso.net/home.do.Sue Mayor)
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APACHE 2 score and MR in 48 patients with febrile neutropenia (NEMROCK)
Score Patients Mortality N %
0-4 1 0 05-9 4 0 0
10-14 5 0 015-19 21 1 420-24 11 5 4525-29 6 5 83
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NCCN Guidelines for risk assessment in febrile neutropenia HIGH RISK : (any factor listed below)
Inpatient status at time development of feverSignificant medical comorbidity or clinically
unstableAnticipated prolonged sever neutropenia (< 100 cell /mcL and >7 d )Hepatic insufficiency (5 times ULN of ALT/AST)Renal insufficiency (Cr. Clearance < 30 ml;m)Uncontrolled /progressive cancer.Pneumonia or other complex infection Alemtuzumab therapyMucositis grade 3-4 MASCC Risk Index less than 21
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Do we need more criteria ?
Infectious Diseases Society of America (IDSA): Mucositis grade 3-4:
Oral or GIT mucositis that interfere with swallowing or cause sever diarrhea
Neurological or mental-status: Changes of new onset.
Intravascular catheter infection: especially tunnel infection.
(Clinic. Infect. Diseases 2011:52 , Freifeld, et al. )
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WORKUP
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A) History:Type of malignancy (hematological or
not).Symptoms of infection focus : (GIT/GUT/respiratory/skin /CNS)Previous CTX (time & type) or RTH (time & site)Previous antimicrobial ttt.Previous splenectomy.Previous neutropenia.
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B) Examination:Vital signs.Local exam: Oral cavity/ perianal region/ skin &
catheter site. PR: Contraindicated as it may lead to spread of infection ± bleeding)
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C) Laboratory:
Routine: CBC/ KFT/ LFT/ electrolytes/ blood glucose/ bleeding profile
Urine & stool analysis (if indicated)
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D) Cultures:
i. Blood: 2 sets, preferably 1 peripheral & 1 central to
distinguish catheter-related infection from 2ry sources
ii.Sputum: If patient has productive cough, BAL for infiltrate with uncertain etiology, Nasal wash or BAL for RV.
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D) Cultures (cont.)iii. Urine if:
Symptomatic Urine catheterization Abnormal urine analysis
iv. Stool: In patients with diarrhea, stool specimen
is evaluated for Clostridium difficile toxin assay.
v.Skin & mucous membrane: Bacterial: aspiration or bx from skin lesion, or swab
exit site drainage. Viral: from vesicular or ulcerative lesion.
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E) Imaging:
Chest X-ray
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CT Chest
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CT Paranasal SinusesIf invasive Aspergillosis is suspected (sinus tenderness, periorbital cellulitis, nasal obstruction, history of fungal chest infection)
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CT Abdomen/Pelvis:If abdominal pain ( to exclude necrotizing enterocolitis)
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CT/MRI Brain:If CNS symptoms (+ CSF exam if possible)
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Management of Neutropenic fever
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Definitive TreatmentFactors influencing initial ttt: MASCC score. Hemodynamic stability. Vancomycin indication. Site of infection. Local antibiotic susceptibility
pattern. Organ dysfunction & drug
allergies.
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Management of low risk patients A. Criteria
MASCC score >21 PS ≤1 No co-morbidities Anticipated neutropenia <7 days Creatinine ≤2mg/dL & LFT ≤3x
normal Must be able to tolerate oral ttt Not on prior quinolone prophylaxis
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B. Drugs: ◦ ciprofloxacin 750mg q12hrs + amoxicillin-
clavulanate 1gm q12hsC. Consider inpatient ttt for the 1st 2-24
hrs. to confirm low risk status & observe 1st administration & any reaction.
D. Follow-up pt. every 2 days by phone & weekly at outpatient clinic unless:◦ New symptoms/signs◦ Persistent/ recurrent fever◦ +ve culture◦ Drug intolerance
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Management of High Risk groupIf the patient is hemodynamically stableA. Start empiric therapy with a single agent broad spectrum IV
antibiotic (according to local antibiogram) such as:1) Ceftazidime (Fortum):
Many centers have found that ceftazidime is no longer a reliable agent for empirical monotherapy of febrile neutropenia.
Decreasing potency against gram-negative organisms and its poor activity against many gram-positive pathogens.
2) Cefepime (Maxipime)
Effective in CNS infection Avoid if Gm-ve infection is suspected
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3) Imipenem/cilastatin (Tienam) Adjust dose in renal impairment & CNS disease.
4) Meropenem (Meronem) Effective in nosocomial pneumonia & intra-
abdominal infection.5) Pipracillin-tazobactam (Tazocin)
May result in false +ve galactomann test Limited effect if P. aeroginosa or Extended
Spectrum B-Lactamase infection is suspected (Carbapenems are preferred) Preferred in cases associated with
thrombocytopenia
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B. Indications for addition of antibiotics active against gram-positive organisms:
1) Colonization with +ve for MRSA, VRE, or penicillin-resistant strptococcus pneumonia.
2) Blood culture positive for Gm +ve bacteria.
3) Hemodynamic instability or other evidence of sever sepsis.
4) Catheter or soft tissue infection, sever mucositis, FQL prophylaxis.
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Modifications to initial empiric therapy
MRSA (methicillin resistant staph. aureus):◦Early addition of vancomycin, linezolid, or
daptomycin VRE (vancomicyn-resistant enterococcus):
◦ linezolid, or daptomycinESBLs (extended spectrum B-lactamase):
◦Consider early use of carbapenems.KPCs (K lebsilla pneumoniae
carbapenemase): ◦Consider early use of polymyxin-colistin or
tigecycline.
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C. Modify initial empiric ttt in the following clinical situation
1) If oral vesicular or ulcerative lesion → add antiviral ttt: Acyclovir.2) If oral thrush → add fluconazole (voriconazole in resistant cases)3) If odynophagia & retrosternal burning → consider Candida or HSV4) If infected central venous catheter:
Exit site cellulitis → add Vancomycin Tunnel infection→ Vancomycin lock for 24 hrs. + remove catheter if persistent infection Catheter-associated bacteremia → add appropriate antibiotic + remove catheter
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5. If periorbital cellulitis → add Vancomycin (± Amphotericin B if suspicious CT finding of aspergillosis)
6.If lung infiltrates are present → add a fluoroquinolone to cover atypical bacteria
7.If Clostridium difficile is suspected → add metronidazole8. If encephalitis is suspected → add high dose acyclovir with adequate hydration & renal function monitoring
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Treatment modification for non-respondersA. Persistent fever after ANC recovery:
Consider disseminated candidiasis → for Fluconazole or Itraconazole
B. Persistent fever with neutropenia:1.Modify antibiotic regimen:
If ceftazidime was used initially shift to carbapenem & add aminoglycosides
If carbapenem was initially used switch to pipracillin-tazobactam & add aminoglycoside & co-trimixazole
Modify according to results of culture & sensitivity while maintaining Gm-ve coverage
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2) Persistent spiking fever for 4-7 days → add antifungal
A. Amphotericin B: Renal & electrolyte toxicity maybe
reduced by fluid infusion & electrolyte replacement (esp. K+)
Allergic reaction maybe treated by antipyretics & antihistaminics
Caution : Amphotericin B + aminoglycoside = potential nephrotoxic combination, so either:i. Hydrate the patient appropriately &
monitor serum creatinine dailyii. Add quinolone instead of aminoglycoside
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B. Voriconazole : 6mg/ kg q12hrs for 2 doses then 4mg/ kg
q12hrs or switch to 200mg q12hrs PO Weak action against zygomycosis IV form used in caution with renal
insufficiency In patients with moderate or severe renal
impairment (creatinine clearance < 50 mL/min) Oral Voriconazole is preferred
3) Signs of breakthrough sepsis (↓↓ BP, ↓↓urine output, rigors) → ttt as septic shock.
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If the patient is hemodynamically unstable1) Fluid resuscitation.2) Vasopressors & oxygen.3) Prompt administration of broad spectrum
I.V. antimicrobials:a. Vancomycin +b. Carbapenem (imipenem or meropenem) + c. Aminoglycoside + d. Antifungal ( Amphotericin B or voriconazole)
4) Stress dose steroids:a. Hydrocortisone → 50mg q6hrs IV +b. Fludrocortisone →50 µg OD PO
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Timing of ttt discontinuation for responders with known site of infection:
A. Bacterial Skin/ soft tissue: 7-14 days Pneumonia/ sinusitis: 10-21 days Blood
Gm-ve: 10-14 days Gm+ve: 7-14days ( for S.aureus → at least 2 wks after
1st –ve blood culture)B. Fungal
Candida: at least 2 wks after 1st –ve blood culture Molds (e.g. aspergillus): at least 12 days
C. Viral HSV/ VZV: 7-10 days Influenza: 5 days ( 10 days for high risk patients)
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Drug Interaction
1. Amphotericin B + vancomycinpotential nephrotoxic & neurotoxic combinationrenal, auditory and vestibular function, and
serum drug concentrations should be monitored
2. Aminoglycosides + vancomycin additive nephrotoxic or neurotoxic effects. renal function and serum drug concentrations
should be monitored. switching aminoglycosides to quinolones is an
option
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Drug Interaction (continued)
3. Amphotericin B + corticosteroidsIncreased risk of hypokalemia (esp. with
fludrocortisone)Potassium supplementation may be
necessary. Patients should be advised to notify their
physician if they experience signs of electrolyte disturbances such as weakness, lethargy, muscle pains or cramps
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Thank You