Update on febrile neutropenia - UST Hall A... · 2017-06-13 · UPDATE ON FEBRILE NEUTROPENIA...
Transcript of Update on febrile neutropenia - UST Hall A... · 2017-06-13 · UPDATE ON FEBRILE NEUTROPENIA...
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UPDATE ON FEBRILE NEUTROPENIA
Clinical approach and management
Dr.Shafiq A. Alimad
Head of medical department at university of science and technology hospital
YICID 15-December-2014
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INTRODUCTION
Cancer patients receiving cytotoxic antineoplastic therapy sufficient to adversely affect myelopoiesis and the developmental integrity of the gastrointestinal mucosa are at risk for invasive infection due to colonizing bacteria or fungi that translocate across intestinal mucosal surfaces.
Since the magnitude of the neutrophil-mediated component of the inflammatory response may be muted in neutropenic patients an elevated body temperature may be the earliest and only sign of infection.
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It is critical to recognize neutropenic fever and associated sepsis syndromes early and to initiate empiric systemic antibacterial therapy promptly in order to avoid progression to a sepsis syndrome and possibly death.
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Prior to the era of empiric antibiotic therapy, infections accounted for most episodes of neutropenic fever and approximately 70 percent of the mortality in neutropenic acute leukemia patients .
Because of the routine use of prompt empiric antibiotics, infections are documented less frequently today.
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Although the majority of patients with neutropenic fever do not have a documented infection, consensus guidelines recommend that all patients with neutropenic fever be promptly evaluated and treated with empiric broad-spectrum antibiotics .
This approach is indicated since it is difficult to distinguish life-threatening infections from less serious infections in this patient population, and infection may progress rapidly in such patients. Furthermore, better outcomes are seen with prompt therapy
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DEFINITIONS
FEVER
– Single oral T ≥ 38.3o C ( 101o F ) OR
– T ≥ 38o C ( 100.4o F ) sustained over 1 h
NEUTROPENIA
– ANC < 500 cells/mm3 OR
– ANC expected to decrease to < 500 cells/mm3 during the next 48 hrs
PROFOUND NEUTROPENIA
– ANC < 100 cells/mm3
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EPIDEMOLOGY
occurs in: Fever
10 % – 15 % of patients with solid tumors
80 % of hematologic malignancies during ≥ 1 chemotherapy cycle
Most patients have NO infectious etiology
% of cases30 –% 20 occur in Clinically documented infections
Site: GI, Lung, Skin
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BACTEREMIA
profound neutropenia especially% , 25 -% 10 Occur in
57 % gram +ve
34 % gram –ve
9 % polymicrobial
Mortality: 18 % gram –ve 5 % gram +ve
1960 – 1970 : gram –ve > gram positive
1980 – 1990 : gram positive > gram –ve
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Coagulase-Negative Staphylococci are the most common blood isolates due to increase use of indwelling venous catheters
Resistant Organisms:
ESBL
KPC
MRSA, VRE ≈ 20 % - 50 %
Penicillin resistant strept viridans
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Candida:
usually > 1st week of prolonged neutropenia
Molds:
Sinuses
Lungs
Typically ≥ 2 weeks of neutropenia
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RISK ASSESSMENT
High-risk and Low-risk Patients with Fever and Neutropenia
Type Of Empirical Antibiotic Therapy ( PO vs IV )
Venue Of Treatment ( Inpatient vs Outpatient )
Duration Of Antibiotic Therapy
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PATIENTS WITH NEUTROPENIC FEVER WHO ARE AT HIGH RISK FOR SERIOUS COMPLICATIONS
Patients with any of the following characteristics are considered to be at high risk for serious complications during episodes
of neutropenic fever:
Neutropenia (absolute neutrophil count <500 cells/microL) anticipated to last >7 days*
•Presence of any comorbid medical problems, including, but not limited to:
•Hemodynamic instability
•Oral or gastrointestinal mucositis that interferes with swallowing or causes severe diarrhea
•Gastrointestinal symptoms, including abdominal pain, nausea and vomiting, or diarrhea
•Neurologic or mental status changes of new onset
•Intravascular catheter infection, especially catheter tunnel infection
•New pulmonary infiltrate or hypoxemia
•Underlying chronic lung disease
•Complex infection at the time of presentation
Alemtuzumab use within the past two months
Inpatient status at the time of development of fever
Uncontrolled or progressive cancer•
Evidence of hepatic insufficiency (defined as aminotransferase levels >5 times normal values) or renal insufficiency (defined as a
creatinine clearance of <30 mL/min)
Multinational Association for Supportive Care in Cancer (MASCC) risk index score <21Δ
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HIGH RISK PATIENTS
Should be hospitalized for IV antibiotics
Usually :
Acute Leukemia
Hematopoietic Stem Cell Transplantation ( HSCT )
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LOW RISK PATIENTS
Anticipated ≤ 7 days duration
No or few comorbidities
Candidates for oral empirical therapy
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DETAILED HISTORY
New symptoms
Antimicrobial prophylaxis
Infection exposure
Prior documented infections
Prior pathogen colonization
Non-infectious cause of fever, e.g. blood product
Co-morbid diseases
Recent surgical procedures
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PHYSICAL EXAMINATION
Site of previous procedures or catheters
Catheter entry and exit site
BM aspiration site
Oropharynx: periodontium
GI, Lungs, Perineum
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ECTHYMA GANGRENOSUM
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NECROTIC SKIN LESION OF MUCORMYCOSIS
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FUSARIUM SKIN LESIONS ON LOWER EXTREMITIES
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DIAGNOSTIC EVALUATION OF PATIENTS WITH FEVER AND NEUTROPENIA
Item Purpose Comments
Targeted history Seek sites suspicious for infection Allows detection of symptoms of
infection
Physical exam with emphasis on skin,
oral cavity, oropharynx, lungs, abdomen,
perianal area*
Detection of sites suspicious for infection;
guides selection of cultures and imaging
Pain and/or erythema may point to
infection; pus is not found due to lack of
neutrophils; chest exam may be
unremarkable even with pneumonia;
abdominal tenderness may suggest
Neutropenic enterocolitis; perianal or
hemorrhoidal tenderness may point to
gram-negative or anaerobic infection
Complete blood count with differential Defines the depth of neutropenia
The lower the initial neutrophil count, the
greater the likelihood of serious infection
or bacteremia; daily counts allow
prognostication
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NEUTROPENIC ENTEROCOLITIS (TYPHLITIS)
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Creatinine, liver function tests,
electrolytes Defines comorbid conditions
Allows optimal selection and dose of
antimicrobial agent(s) and serial
monitoring of toxicities
Blood cultures (2 sets, one peripheral and
one from central venous catheter);
antimicrobial susceptibility testing
Detection of bacteremia
Fever may be the only sign of bacteremia;
allows adjustment of antibiotic regimen if
necessary
Cultures and stains of samples from
suspected sites of infection Detection of infectious etiology Bacterial and fungal stains can be helpful
Imaging studies (generally recommended
only if site is suspected from history or
exam)
Detection of infectious site
Computed tomography (CT) scans are
generally more useful than plain
radiographs; pulmonary infiltrates may be
inapparent by plain radiography during
deep neutropenia and may become
manifest only upon neutrophil recovery;
thickened bowel walls are seen by CT
scan with neutropenic enterocolitis
Digital rectal examination is avoided in neutropenic patients
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TESTS AND CULTURES
CBC count with differential
Creatinine, urea, electrolytes, hepatic transaminase enzymes and total bilirubin
At least 2 sets of blood cultures:
Each set from each lumen of central venous catheter ( CVC ) if present and from peripheral vein simultaneously
If No CVC : 2 blood culture sets from separate veins
RE-culture: next 48 hrs or refever
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20 ml of blood: aerobic and anaerobic blood culture bottle
Blood culture volume should be less than 1% of total blood volume (70 ml/kg)
Cultures from other sites of suspected infection should be obtained as clinically indicated
Chest X-ray is indicated for patients with respiratory signs and symptoms
Stool : if diarrhea → C. diff. toxin assay
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Urine culture is indicated if:
Signs or symptoms
Urinary catheter
Abnormal urine analysis
: CSF culture
if meningitis is suspected
aspiration or biopsy for cytology and culture :Skin lesion
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Respiratory:
Sputum culture if productive cough
BAL → if abnormal CXR
Nasal wash or BAL for viral detection: adenovirus, influenza A , B , RSV and parainfluenza
:Radiography
CXR if symptoms
CT if clinically indicated
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Type of infection Stain Culture Other
Bacteria Gram stain Aerobic and anaerobic culture
Fungi KOH smear• Fungal culture• Aspergillus galactomannan
antigen
Mycobacteria AFB Mycobacterial culture
Pneumocystis
jirovecii (formerly P. carinii)
Fluorescein-conjugated
monoclonal antibodyΔ N/A PCR
Nocardia spp Modified AFB Fungal culture
Legionella spp N/A Legionella culture using BCY
E medium◊
Mycoplasma pneumoniae N/A N/A PCR
Viruses
Cytomegalovirus N/A Shell vial culture, conventional
culture§ PCR, cytology§
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Influenza virus N/A Viral culture
Reverse transcriptase PCR,
direct or indirect fluorescent
antibody, rapid antigen test‡
Parainfluenza virus N/A Viral culture Direct or indirect fluorescent
antibody, PCR
Respiratory syncytial virus N/A Viral culture PCR, rapid antigen test‡
Adenovirus N/A Viral culture PCR
Herpes simplex virus N/A Viral culture† Direct fluorescent antibody†
Varicella-zoster virus N/A Viral culture Direct fluorescent antibody
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SERUM FUNGAL MARKERS
Checking fungal markers from the serum, such as
the Aspergillus galactomannan antigen and the beta-D-glucan assay,
should also be considered in high-risk patients. Some centers perform serial monitoring of these twice weekly in hematopoietic cell transplant recipients and acute leukemia patients .
The Aspergillus galactomannan antigen is a specific test for invasive aspergillosis, whereas the beta-D-glucan assay is a nonspecific test for several invasive fungal infections, including aspergillosis and candidiasis
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EMPIRIC THERAPY Fever in a neutropenic patient should be considered a medical emergency.
Assessment by a physician should occur soon (eg, within 15 minutes) after triage for patients presenting with neutropenic fever within six weeks of having received chemotherapy for malignancy.
Broad-spectrum antibacterials should be given as soon as possible (within 60 minutes of triage) and at full doses, adjusted for renal and/or hepatic function.
Antibiotics should be:
Bactericidal ,Anti-pseudomonal ,Minimal toxicity.
In addition, the diagnostic evaluation should be obtained quickly.
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TIMING OF ANTIBIOTICS
In all febrile neutropenic patients, empiric broad-spectrum antibacterial therapy should be initiated immediately after blood cultures have been obtained and before any other investigations have been completed.
Antimicrobial therapy should be administered within 60 minutes of )1algorithm presentation (
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WHAT EMPIRIC ANTIBIOTIC THERAPY AND IN WHAT VENUE
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LOW RISK PATIENTS
Initial oral or IV antibiotic doses in clinic or hospital
May be transitioned to outpatient IV/PO treatment if they have specific clinical criteria
ORAL EMPIRICAL TREATMENT
Ciprofloxacin+Amoxicillin-Clavulanate
Others: less well studied and NO enough data
Levofloxacin or Ciprofloxacin as monotherapy
Ciprofloxacin+Clindamycin
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ELIGIBILITY CRITERIA FOR OUT PATIENT MANAGEMENT
[ANC] <500 cells/microL) for ≤7 day.
No active comorbidities or evidence of significant hepatic or renal dysfunction.
Normal finding on CXR.
Hemodynamic stability.
Solid malignancy.
No documented bacterial, viral, or fungal infection.
No evidence of VAD related infection.
No abdominal pain, nausea, vomiting or diarrhea
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ELIGIBILITY CRITERIA FOR OUT PATIENT MANAGEMENT
No neurological or mental-status changes.
Ability to swallow oral medications.
The patient was not on quinolone prophylaxis.
The patient can be reliably monitored and has ready
access to appropriate medical care.
The patient needs less than one hour car ride to reach
the center.
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High risk patients should be hospitalized for IV empirical antibiotic therapy
Monotherapy with an anti-pseudomonal β-lactam agent:
Cefepime
Carbapenem: meropenem or imipenem-cilastatin
Piperacillin-tazobactam
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Other antibiotics: aminoglycoside, fluoroquinolones, vancomycin:
May be added to initial regimen For
1. Treatment of Complications
( hypotension, pneumonia ) or
1. If antimicrobial resistance is suspected or
proven
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β-lactam monotherapy:
Ceftazidime is NO longer used
Aminoglycoside monotherapy should NOT be used
Vancomycin is NOT recommended as a standard part of initial regimen for febrile neutropenia
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Modifications to initial empirical therapy may be considered for patients at risk for infection with the following antibiotic-resistant organisms:
1.Risk factors include previous infection or colonization or hospital with high rate of endemicity
2.MRSA: Vancomycin, Linezolid, or Daptomycin
3.VRE: Linezolid, or Daptomycin
4.ESBL: Carbapenem
5.KPCs: Polymyxin-colistin or Tigecycline
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PENICILLIN-ALLERGIC PATIENTS:
SEVER FORM
Ciprofloxacin+ Clindamycin
OR
Aztreonam+Vancomycin
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ANTIBIOTIC MODIFICATIONS DURING THE COURSE OF FEBRILE NEUTROPENIA
Modifications to the initial antibiotic regimen should be guided by clinical and microbiologic data
Unexplained persistent fever in a patient who is stable rarely requires an empirical change to the initial antibiotic or adding vancomycin
If an infection is identified, antibiotics should be adjusted accordingly
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Documented clinical and/or microbiological infections should be treated with antibiotics appropriate for the site and for the susceptibilities of any isolated organisms:
Pneumonia: health-care acquired infection ( β-lactam+amino OR antipseudomonal FQ ± anti-MRSA )
If vancomycin or other coverage for gram-positive organisms was started initially, it may be stopped after 2 days if there is NO evidence for a gram-positive infection
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Patients who remain hemodynamically unstable after initial agents for neutropenic fever should have their antibiotics broadened to include coverage for resistant gram-negative, gram-positive, and anaerobic bacteria and fungi
For Low-risk patients if clinically stable:
Their treatment may be simplified
IV to Po switch if clinically stable and adequate GI absorption
If fever persists or recurs within 48 hrs in outpatient, readmit and treat as high risk patient
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HOW LONG SHOULD EMPIRICAL ANTIBIOTIC THERAPY BE GIVEN
In patients with clinically or microbiologically documented infections, the duration of therapy is dictated by the particular organism and site and antibiotics should be continued for at least the duration of neutropenia (until ANC is ≥ 500 cells/mm3) or longer if clinically necessary
Blood stream infection, soft tissue infection and pneumonia: 10 – 14 days of antibiotics
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In Patients with Unexplained Fever:
Continue the initial antibiotics until there are signs of marrow recovery (ANC exceeds 500 cells/mm3)
OR
If an appropriate treatment course has been completed and all signs and symptoms of a documented infection have resolved, patients who remain neutropenic may resume oral fluoroquinolone prophylaxis until marrow recovery
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EMPIRICAL OR PRE-EMPTIVE ANTIFUNGAL THERAPY
Empirical antifungal coverage should be considered in high-risk patients who have persistent fever after 4–7 days of a broad-spectrum antibacterial regimen and no identified fever source
In low risk patients:
routine use of antifungal therapy is NOT recommended
Treatment:
1) Ampho B
2) Lipid soluble Ampho B
3) Voriconazole
4) Caspofungin
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EMPIRICAL OR PRE-EMPTIVE ANTIFUNGAL THERAPY
The choice of antifungal agent for empiric therapy depends upon which fungi are most likely to be causing infection, as well as toxicity profiles and cost:
•For persistently febrile patients who have not been receiving antifungal prophylaxis and who have no obvious site of infection, such as pulmonary nodules, start caspofungin (or another echinocandin) since Candida spp is the most likely cause in such patients.
•For persistently febrile patients with pulmonary nodules or nodular pulmonary infiltrates, invasive mold infection should be strongly suspected. In such patients, start voriconazole or a lipid formulation of amphotericin B.
•For persistently febrile patients who have been receiving anti-mold prophylaxis, a different class of antifungal agent with activity against molds should be used for empiric therapy
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EMPIRICAL OR PRE-EMPTIVE ANTIFUNGAL THERAPY
Dosing — The dosing of the various antifungal agents recommended above is as follows:
●Caspofungin – Loading dose of 70 mg IV on day one, then 50 mg IV once daily
●Voriconazole – Loading dose of 6 mg/kg IV every 12 hours on day one, followed by 4 mg/kg IV every 12 hours
●Amphotericin B lipid complex – 5 mg/kg IV once daily
●Liposomal amphotericin B – 3 to 5 mg/kg IV once daily
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TREATMENT OF CATHETER-RELATED INFECTION IN NEUTROPENIC PATIENTS
CATHETER REMOVAL for CLABSI Caused By:
S. aureus
P. aeruginosa
Fungi
Mycobacteria
Tunnel Infection
Port Pocket Site Infection
Septic Thrombosis, Endocarditis
Sepsis with Hemodynamically Unstable
Blood Stream Infection Persists ≥ 72 hrs after therapy with appropriate antibiotics
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TREATMENT OF CATHETER-RELATED INFECTION IN NEUTROPENIC PATIENTS
CLASBI caused by Coagulase-Negative Staphylococci (CONS):
the catheter may be retained using systemic therapy with OR without antibiotic lock therapy
Prolonged treatment (4–6 weeks) is recommended for complicated CLABSI:
Deep tissue infection
Endocarditis
Septic thrombosis
Persistent bacteremia or fungemia occurring > 72 h after catheter removal in a patient who took appropriate antimicrobials
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TREATMENT OF CATHETER-RELATED INFECTION IN NEUTROPENIC PATIENTS
Hand hygiene
Maximal sterile barrier precautions
Cutaneous antisepsis with chlorhexidine during CVC insertion
are recommended for all CVC insertion
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PREVENTION ENVIRONMENTAL PRECAUTION
Hand Hygiene is the most effective means of preventing transmission of infection in the hospital
Standard barrier precautions and infection-specific isolation should be used for patients with certain signs or symptoms
HSCT patients: in private single-patient room
Allogeneic HSCT: room with > 12 air exchanges/hr and high efficacy particulate air(HEPA) filtration
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ENVIRONMENTAL PRECAUTION
Plants and dried or fresh flowers should not be in the rooms of neutropenic patients
Health-Care Workers (HCWs) to report their illnesses or exposures
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ANTIBIOTIC PROPHYLAXIS
Fluoroquinolone prophylaxis: should be considered for high-risk patients with expected durations of prolonged and profound neutropenia (ANC ≤ 100 cells/mm3 for > 7 days)
Levofloxacin vs Ciprofloxacin: EQUIVALENT
Levofloxacin is preferred in situations with increased risk for oral mucositis-related invasive viridans group streptococcal infection
Monitoring for the development of fluoroquinolone resistance among gram-negative bacilli is recommended
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ANTIBIOTIC PROPHYLAXIS
Addition of a gram-positive active agent to fluoroquinolone prophylaxis is generally NOT recommended
Antibacterial prophylaxis is NOT routinely recommended for low-risk patients who are anticipated to remain neutropenic for < 7 days
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ANTIFUNGAL PROPHYLAXIS
Candida Prophylaxis
Allogenic HSCT
Intensive remission-induction or salvage induction chemotherapy for acute leukemia
Prophylaxis:
Fluconazole Itraconazole
Voriconazole Posaconazole
Micafungin Caspofungin
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ANTIFUNGAL PROPHYLAXIS
Aspergillus Prophylaxis
Intensive chemotherapy for AML
MDS
FOR BMTX
1)Prior invasive aspergillosis
2)Anticipated prolonged neutropenia
3)Prolonged neutropenia prior to HSCT
Antimold antifungal is recommended At least 75 days after transplantation OR Stopping of immunosuppressive therapy
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ANTIFUNGAL PROPHYLAXIS
LOW RISK PATIENTS
Antifungal is NOT recommended for prophylaxis in whom the anticipated duration of neutropenia is < 7 days
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ANTIVIRAL PROPHYLAXIS
Acyclovir Prophylaxis
Herpes simplex virus (HSV)-seropositive patient for allogenic HSCT
Leukemia induction therapy
Till ↑ WBC or resolution of mucositis
Antiviral treatment for HSV or varicella-zoster (VZV) infection is ONLY indicated if there is clinical or laboratory evidence of active viral disease
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ANTIVIRAL PROPHYLAXIS
If symptoms of upper respiratory tract (coryza, cough):
Should Do
CXR
Respiratory virus testing: influenza, parainfluenza, adeno, RSV, human metapneumovirus
Yearly Influenza Vaccination
Inactivated vaccine is recommended for all patients treated for cancer
Between cycles of chemotherapy: > 7 days after last treatment or > 2 wks before chemo or > 6 months after HSCT
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ANTIVIRAL PROPHYLAXIS
Influenza Infection
Treatment with neuraminidase inhibitors if susceptible
Post-Exposure Treatment: antiviral REGARDLESS of vaccination
Routine treatment of RSV Infection in neutropenic patients with upper respiratory disease should NOT be given
Adenovirus Infection
Supportive
Ribavirin?? Cidofovir?
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ROLE OF G-CSF OR GM-CSF
Primary prophylaxis :
Consider prophylactic use of G-CSF/GM-CSF for patients in whom:
%20≥anticipated risk of fever and neutropenia is the
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20 and 10 fever is between neutropenicWhen the estimated risk of percent :
•Age 65 and older
•Poor performance status
•Prior episodes of neutropenic fever
•Large radiation portals
•Cytopenias due to marrow involvement
•Poor nutritional status
•Open wounds or active infection
•Advanced cancer or other serious comorbidities
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ROLE OF G-CSF OR GM-CSF
Secondary prophylaxis:
●For patients who had an episode of neutropenic fever after an earlier cycle of palliative chemotherapy, they suggest dose reduction or delay as the primary therapeutic option rather than routine administration of CSFs (Grade 2C).
●However, in keeping with ASCO guidelines , when the risk of neutropenic fever would prevent the administration of full doses of potentially curative chemotherapy, they suggest the use of granulocyte CSFs for secondary prophylaxis rather than dose reduction (Grade 2C)
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MYELOID RECONSTITUTION SYNDROME
Clinicians should be aware of the myeloid reconstitution syndrome, a circumstance in which there may be onset or progression of an inflammatory focus defined clinically or radiologically that manifests at the time of neutrophil recovery
. Because such processes may appear in the context of a persistent neutropenic fever syndrome, the likelihood of superinfection must be considered with respect to the antimicrobial spectrum of the patient’s current empiric antibacterial therapy and the microbiologic differential diagnosis applicable to those circumstances
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HOME MESSAGES febrile neutropenia is an emergency especially high risk
You should manage your patient based on risk assessment (individualization).
Neutropenic patient commonly to present atypically .
Treat empirically but follow guidelines and continue or change management according patient response.
Prevention better then cure
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THANK YOU
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