Table 4

Study drug safety and tolerability

Placebo

N = 25

Heparin

N = 25

P value


Percentage of scheduled doses withheld

3.8 ± 9.2

5.8 ± 9.5

0.5

Reasons for withholding

Blood-stained sputum

1 (4)

6 (24)

0.1

Prolonged APTT

1 (4)

3 (12)

0.6

Suspected HIT

0

1 (4)

1

Confirmed HIT

1 (4)

0

1

Invasive procedure

3 (12)

0

0.2

Other

4 (16)

2 (8)

0.7

Percentage of days during study period with

Blood-stained sputum

31 ± 28

41 ± 39

0.3

Frank blood in sputum

2.5 ± 9

7.0 ± 21

0.3

Purulent sputuma

62 ± 25

61 ± 35

1

Red cell transfusion

Volume transfused per day (mls)

0 (0-57)

0 (0-85)

0.9

Patients transfused

10 (40)

7 (28)

0.4

Abnormal APTTb (> 40 seconds)

5/17 (29)

11/19 (58)

0.08


aDenotes sputum reported as yellow, green, dirty, or purulent. bPatients on therapeutic heparin were excluded from this analysis. Values other than P values are presented as mean ± standard deviation, as median (interquartile range), or as number (percentage). APPT, activated partial thromboplastin time; HIT, heparin-induced thrombocytopenia.

Dixon et al. Critical Care 2010 14:R180   doi:10.1186/cc9286

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