Table 1.

Patient characteristics at time of infection onset

CharacteristicN (%) 
Sex   
Male 37 (66) 
Female 19 (34) 
Age, median (range) 62.5 (21-80) 
HCT recipient 25 (43.1) 
Underlying disease   
AML 27 (45) 
ALL 9 (20) 
MDS 8 (14.3) 
Lymphoma 8 (14.3) 
Other  4 (7.1) 
Neutropenia§  44 (75.9) 
Profound neutropeniaǁ 38 (65.5) 
Empiric anti-Pseudomonal antibiotic  
Cefepime 37 (63.7) 
Piperacillin-tazobactam 15 (26) 
Meropenem 3 (5.2) 
Ceftolozane-tazobactam 3 (5.2) 
Adjunctive empirical tobramycin  11 (19) 
Antipseudomonal antibiotic susceptibility  
Cefepime 54 (93.1) 
Piperacillin-tazobactam 50 (86.2) 
Meropenem 19 (34) 
MDR P. aeruginosa 8 (13.8) 
AEAT 51(87.9) 
Pneumonia 18 (31.0) 
Copathogen 14 (24.1) 
Steroid receipt#  21 (36.2) 
exoU+ genotype 18 (31) 
CharacteristicN (%) 
Sex   
Male 37 (66) 
Female 19 (34) 
Age, median (range) 62.5 (21-80) 
HCT recipient 25 (43.1) 
Underlying disease   
AML 27 (45) 
ALL 9 (20) 
MDS 8 (14.3) 
Lymphoma 8 (14.3) 
Other  4 (7.1) 
Neutropenia§  44 (75.9) 
Profound neutropeniaǁ 38 (65.5) 
Empiric anti-Pseudomonal antibiotic  
Cefepime 37 (63.7) 
Piperacillin-tazobactam 15 (26) 
Meropenem 3 (5.2) 
Ceftolozane-tazobactam 3 (5.2) 
Adjunctive empirical tobramycin  11 (19) 
Antipseudomonal antibiotic susceptibility  
Cefepime 54 (93.1) 
Piperacillin-tazobactam 50 (86.2) 
Meropenem 19 (34) 
MDR P. aeruginosa 8 (13.8) 
AEAT 51(87.9) 
Pneumonia 18 (31.0) 
Copathogen 14 (24.1) 
Steroid receipt#  21 (36.2) 
exoU+ genotype 18 (31) 

The time of infection onset is defined as the date of first infected blood or BALF culture.

AEAT, appropriate empirical antibiotic therapy; AML, acute myeloid leukemia; ALL, acute lymphocytic leukemia; MDS, myelodysplastic syndrome; MDR, multidrug resistant.

Total N = 58 episodes, except where indicated.

Out of 56 unique patients.

Multiple myeloma (n = 3); acute promyelocytic leukemia (n = 1).

§

Absolute neutrophil count < 500 cells per mm3.

Absolute neutrophil count < 100 cells per mm3.

Used in combination with an antipseudomonal β-lactam or meropenem.

#

Receipt of steroids at any dose at the time of infection onset.

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