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A 29-year-old APL patient presented with neutropenic fever

DR. SHARMIN EASMIN

PHASE-B RESIDENT

GREEN UNIT

HAEMATOLOGY DEPARTMENT

BSMMU

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  • Mrs. Rabeya akter, 29 years old housewife presented with the complaints of-
  • Fever for 10 days
  • Reddish and blackish spots over chest, arm and leg for same duration.
  • After clinical evaluation & investigations including bone marrow morphology, immunophenotyping and cytogenetic study she was diagnosed as a case of high risk Acute prolymphocytic leukemia

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Treatment:

  • Then she started Induction therapy
  • DA 3+7 from 26/05/2022 to 01/06/2022

( Inj. Daunorubicin 50mg/m2 & Inj. Cytarabine 100 mg/m2 )

  • ATRA 45 mg/m2
  • After induction therapy her-

CBC with PBF, Liver function, renal function & other biochemical marker were normal.

No other complications.

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On 12/06/2022

    • Bone marrow study- morphological remission
    • PML/RARA Quantitative,PCR assay - negative

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NCCN Guidelines Version 2.2022

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  • Then Consolidation therapy started on 05/07/2022-
  • HIDAC ( High dose Cytarabine 3 gm/m 2 )
  • ATRA continue as 2 weeks on and off

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  • On Day 13 of consolidation-
    • Headache
    • Blurring of vision
    • Double vision
    • Squint
    • On neurological examination : All cranial nerves were intact.
  • Fundoscopy- Papilloedema
  • CNS imaging- normal
  • Lumbar puncture & triple IT
  • CSF study: CNS status-1 on 06/07/2022

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On day-22 of consolidation therapy she developed :

  • Fever-

high grade,

continuous in nature,

highest recorded temperature 1030 F

associated with vomiting

not associated with chills and rigor & sweating

  • Cough-

Dry

Non productive

No chest pain,

No haemoptysis

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  • On general examination:
  • Severely anaemic
  • Dyspnoeic
  • Wet purpura and petechiae over neck,arm & leg
  • Abdominal distension
  • Pitting oedema – both legs
  • BP- 130/80 mm Hg
  • Pulse – 110 beat/min
  • SPO2 – 97-98%
  • Temperature- 1040F

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Respiratory examination:

  • SOB
    • Cough
    • No chest pain, haemoptysis
  • O/E-
    • RR – 32/ min
    • Breath sound diminished – mid & lower zone of both lung field
    • Bilateral basal creps on both lung field

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  • Gastrointestinal examination:
    • Tender
    • Shifting dullness – present
    • Bowel sound - present
    • No organomegaly

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    • MASCC score < 21

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Haematological parameter

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CBC

19/07/2022

21/07/2022

23/07/2022

25/07/2022

Hb

4.7 g/dl

6.8 g/dl

6.2 g/dl

10.4 g/dl

ESR

60 mm/1st hour

20 mm/1st hour

50mm/1sthour

50mm/1sthour

T WBC

0.12 X ^9/L

0.12 X ^9/L

0.08 X ^9/L

0.14 X ^9/L

Platelet

20 x 10^9/L

5 x 10^9/L

25 X10^9/L

9 X 10^9/L

ANC

10

00

00

50

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17/07/2022

20/07/2022

24/07/2022

Serum electrolyte

Na -130mmol/L

Na -126mmol/L

Na -130mmol/L

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K – 3.9 mmol/ L

K – 4.1 mmol/ L

K – 2.6 mmol/ L

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Cl – 110 mmol/L

Cl – 110 mmol/L

Cl – 110 mmol/L

Serum calcium

8.6 mg/dl

6.7 mg/dl

LDH

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660 IU/L

Ferritin

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2244 mcg/L

SGPT

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24U/L

Bilirubin ( total )

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0.5 mg/dl

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  • PT – normal
  • APTT – normal
  • CRP - > 200 mg/L ( 25/07/2022 )
  • Procalcitonin – 18.92 ug/L ( 25/07/2022 )
  • Lactate – 1.5 mmol /L
  • Uric acid – 2.7 mg/dl ( 25/07/2022 )
  • Blood,Urine,throat swab,canula site – No growth
  • Chest x-ray – not done

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Defination:

  • Sepsis:

Patients with suspected infection who have 2 or more of :

  • Hypotention- SBP < 100 mmHg
  • Altered mental status- Glasgow Coma Scale score ≤ 14
  • Tachypnoea – respiratory rate ≥ 22 breaths /min

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  • Sepsis can also be diagnosed by suspected infection and increase of ≥ 2 points on the SOFA score.

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SOFA score ( Sequential Organ Failure Assessment tool )

A score of 1-4 is allocated to six organ systems ( respiratory,cardiovascular,liver,renal,coagulation & neurological ) to represent the degree of organ dysfunction, e.g. platelet count < 150 x10^9/L scores 1 point, < 25 x10^9/L scores 4 points.

Composite score out of 24

Higher scores are associated with increased mortality

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Diagnosis:

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  • High risk APL with febrile neutropenia

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Definitions�

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  • FN is defined as a single oral temp of ≥38.3°C (101°F) or ≥38.0°C (100.4°F) sustained over 1 hr. period.
  • Neutropenia <500 / mcL or <1000/mcL with predicted to be fall to <500/mcL within next 48 hour.

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NCCN Guidelines Version 2.2022

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Emperic Antimicrobial therapy in febrile neutropenic patient

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Initial evaluation

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Low risk

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Out patient

No associatd comorbidity

Anicipated short duration of severe neutropenia (<100 cells/mcl for 7 days )

Good performance status ( ECOG 0-1 )

No hepatic or renal insufficiency

MASCC risk index score of > 21

Home or out patient treatment

High risk

MASCC risk index score <21 or CISNE score>3b

Inpatient status at the time of development of fever

Anicipated prolonged severe neutropenia (<100 cells/mcl for >7 days )

Severe hepatic or renal insufficiency

Uncontrolled /progressive cancer

Pneumonia or other complex infections at cinical presentation

Mucositis grade 3-4

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Hospital admission

MASCC

CISNE

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MASCC, Muitinational Association of supportive care in cancer�maximum theoretical score is 26

Catagory

Weight

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Burden of illness:no or mild symtopms

No hypotension

No chronic obostructive pulmonary disease

Solid tumor or no previous invasive fungal infection

Out patient status

Burden of disease :moderate symptoms

No dehydration

Age< 60 year

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5

5

4

4

3

3

3

2

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Physical examination 

  • General physical examination.
  • Major co-morbid illness.
  • Time since last chemotherapy
  • Emphasis on infected sites, including
    • Skin, Catheter sites,
    • Biopsy and bone marrow aspirate sites,
    • Teeth, Oropharynx and gingival surfaces, Sinuses,
    • Lungs,
    • Abdomen, genitals and perianal area

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Routine laboratory tests 

  • CBC with differential- Duration of neutropenia, Severity of neutropenia
  • LFTs, electrolytes, serum creatinine, blood urea nitrogen, serum lactate
  • Urinalysis, and cultures
  • Chest Xray
  • 02 sets of blood cultures, Each set should have a volume of 20 mL
  • Specimens should be obtained from other sites as clinically indicated- Sputum, urine, CVC exit site, CSF, skin, stool

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Serum fungal markers  tests �

  • test for Covid-19
  • viral diagnosis by PCR 
  • Aspergillus galactomannan antigen and beta-D-glucan assay in high-risk patients.

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Initial empiric therapy�

  • General principles of empiric therapy
  • Initial antibiotic selection based on
      • Patient's history
      • Allergies
      • Symptoms and signs
      • Recent antibiotic use and culture data,
      • Institutional nosocomial infection and susceptibility patterns.
      • Antibiotics should be bactericidal.
      • In high-risk patients, antibiotics should generally be IV in a hospital .

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Spectrum of coverage 

  • Gram-positive bacteria are the most frequent pathogens during FN
  • Gram-negative organisms continue to cause the majority of infections in other sites (e.g., respiratory tract, biliary tract, GIT, UTI, and skin).
  • Anaerobic coverage is not necessary to include specific anaerobic antibiotic in initial regimen.
  • Duration of profound neutropenia increases, the risk of invasive fungal infections.

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Recommended Approach 

approach for initial therapy of high-risk neutropenic patients with fever:

●Initiation of monotherapy with antipseudomonal beta-lactam agent, such as 

  • Cefepime, 
  • Meropenem,
  • Imipenem-cilastatin,
  • Piperacillin-tazobactam. 

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NCCN Guidelines Version 2.2022

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Recommended Approach 

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  • Avoid ceftazidime monotherapy because of rising resistance rates among gram-negative bacteria and its limited activity against gram-positive bacteria, such as streptococci, compared with newer.

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Ceftazidime monotherapy should not be used in gram-positive infection, such as an infection caused by viridans group streptococci in patients with severe mucositis.

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Recommended approach 

  • The dosing of these agents for patients with normal renal function using traditional dosing (IV, over 30 minutes) are:
  • Cefepime – 2 g IV every eight hours
  • Meropenem – 1 g IV every eight hours
  • Imipenem-cilastatin – 500 mg IV every six hours
  • Piperacillin-tazobactam – 4.5 g IV every six to eight hours; if there is significant concern for Pseudomonas infection (particularly in those who are severely ill or were not receiving fluoroquinolone prophylaxis at the time of onset of illness), 4.5 g IV every six hours

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Vancomycin or others target gram-positive cocci

  • Indication of Vancomycin :
  • Suspected catheter-related infection
  • Skin or soft tissue infection
  • Pneumonia
  • Hemodynamic instability

**Vancomycin or agents target gram-positive cocci is not recommended as a initial regimen.

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Initial regimen 

  • Indication of anaerobic coverage-
  • Necrotizing mucositis, Sinusitis , Periodontal cellulitis
  • Perirectal cellulitis, Intra-abdominal infection (typhlitis),
  • Pelvic infection, or anaerobic bacteremia.

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Combination therapy 

  • Combination antibiotic as initial empiric therapy in FN, but none has been shown to superior to others or to monotherapy
  • Use extended-spectrum beta-lactam (e.g. piperacillin, ceftazidime) in combination with an aminoglycoside.
  • Double beta-lactams or a beta-lactam and a fluoroquinolone.
  • Alternative empiric regimens include-
      • Aztreonam plus vancomycin 
      • Ciprofloxacin plus clindamycin.
  • Do not use fluoroquinolones who have received them recently

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