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Tables for:
Hematologic Effects of Antimicrobials: Focus on the Oxazolidinone Linezolid

[Pharmacotherapy 21(8):1010-1013, 2001. © 2001 Pharmacotherapy Publications]


Table 1. Duration of Therapy with Linezolid[1]


Infection TypeDays
Skin and soft tissue (complicated)10-14
Nosocomial pneumonia10-14
Community-acquired pneumonia, inpatient10-14
Community-acquired pneumonia, outpatient10-14
Vancomycin-resistant Enterococcus faecium14-28

Table 2. Comparison of Mean Hematologic Values for Linezolid versus Comparator Agentsa


 Hemoglobin (g/dl)Platelets (x 103/mm3)Neutrophils (x 103/mm3)
 LinezolidComparatorLinezolidComparatorLinezolidComparator
Baseline
12.93 ± 2.16
12.89 ± 2.26
260 ± 102
264 ± 111
7.86 ± 5.3
7.83 ± 5.0
Therapy days 1-7
12.73 ± 2.12
12.75 ± 2.11
290 ± 116
292 ± 116
5.8 ± 4.1
5.77 ± 3.6
Posttherapy days 1-7
13.06 ± 1.89
13.05 ± 2.03
284 ± 121
312 ± 121
4.93 ± 3.07
5.2 ± 3.7
Posttherapy days 15-21
12.96 ± 1.94
13.18 ± 1.94
292 ± 99
261 ± 94
4.89 ± 3.04
4.7 ± 2.7
Data are mean ± SD.
aData are from 2045 patients enrolled in phase III studies of skin and soft tissue infections, community-acquired pneumonia, and nosocomial pneumonia, and treated with linezolid or comparator agents for 10-14 days.


Table 3. Clinical Significance Criteria for Abnormal Hematologic Events


Hematologic TestCriteria 1aCriteria 2b
Hematocrit
< 75% of LLN
< 75% of BL (if BL > ULN)
< 90% of BL (if BL < LLN)
Red blood cell count
< 75% of LLN
< 75% of BL (if BL > ULN)
< 90% of BL (if BL < LLN)
Platelet count
> 125% of ULN or < 75% of LLN
> 125% of BL or < 75% of BL
White blood cell count
> 125% of ULN or < 75% of LLN
> 125% of BL or < 75% of BL
LLN = lower limit of normal; BL = baseline; ULN = upper limit of normal.
aCriteria 1 are the clinical significance criteria when a patient'sbaseline value was normal.
bCriteria 2 are the clinical significance criteria when a patient's baseline value was abnormal.


Table 1. Duration of Therapy with Linezolid[1]


Infection TypeDays
Skin and soft tissue (complicated)10-14
Nosocomial pneumonia10-14
Community-acquired pneumonia, inpatient10-14
Community-acquired pneumonia, outpatient10-14
Vancomycin-resistant Enterococcus faecium14-28

Table 2. Comparison of Mean Hematologic Values for Linezolid versus Comparator Agentsa


 Hemoglobin (g/dl)Platelets (x 103/mm3)Neutrophils (x 103/mm3)
 LinezolidComparatorLinezolidComparatorLinezolidComparator
Baseline
12.93 ± 2.16
12.89 ± 2.26
260 ± 102
264 ± 111
7.86 ± 5.3
7.83 ± 5.0
Therapy days 1-7
12.73 ± 2.12
12.75 ± 2.11
290 ± 116
292 ± 116
5.8 ± 4.1
5.77 ± 3.6
Posttherapy days 1-7
13.06 ± 1.89
13.05 ± 2.03
284 ± 121
312 ± 121
4.93 ± 3.07
5.2 ± 3.7
Posttherapy days 15-21
12.96 ± 1.94
13.18 ± 1.94
292 ± 99
261 ± 94
4.89 ± 3.04
4.7 ± 2.7
Data are mean ± SD.
aData are from 2045 patients enrolled in phase III studies of skin and soft tissue infections, community-acquired pneumonia, and nosocomial pneumonia, and treated with linezolid or comparator agents for 10-14 days.


Table 3. Clinical Significance Criteria for Abnormal Hematologic Events


Hematologic TestCriteria 1aCriteria 2b
Hematocrit
< 75% of LLN
< 75% of BL (if BL > ULN)
< 90% of BL (if BL < LLN)
Red blood cell count
< 75% of LLN
< 75% of BL (if BL > ULN)
< 90% of BL (if BL < LLN)
Platelet count
> 125% of ULN or < 75% of LLN
> 125% of BL or < 75% of BL
White blood cell count
> 125% of ULN or < 75% of LLN
> 125% of BL or < 75% of BL
LLN = lower limit of normal; BL = baseline; ULN = upper limit of normal.
aCriteria 1 are the clinical significance criteria when a patient'sbaseline value was normal.
bCriteria 2 are the clinical significance criteria when a patient's baseline value was abnormal.