Table 14.2.2PK Sample Summary by Age Group All Enrolled Ampicillin Participants

Post-Natal Age ≤7 DaysPost-Natal Age 8-28 DaysTotal
GA ≤34 WeeksGA >34 WeeksGA ≤34 WeeksGA >34 Weeks
Number PK Samples
 Number of Available Fresh Plasma PK Samples46601638160
 Number of Non-Plasma PK Samples32982028178
Number of Available Fresh Plasma PK Samples Per Participant
 12 (9.5%)2 (7.4%)3 (37.5%)6 (31.6%)13 (17.3%)
 215 (71.4%)19 (70.4%)2 (25.0%)9 (47.4%)45 (60.0%)
 32 (9.5%)4 (14.8%)3 (37.5%)2 (10.5%)11 (14.7%)
 42 (9.5%)2 (7.4%)02 (10.5%)6 (8.0%)
Number of Available Fresh Plasma PK Samples in Each Sampling Window
 After IV Dose/Flush14 (30.4%)14 (23.3%)3 (18.8%)7 (18.4%)38 (23.8%)
 1-4 Hours0006 (15.8%)6 (3.8%)
 2-5 Hours2 (4.3%)10 (16.7%)02 (5.3%)14 (8.8%)
 2-8 Hours12 (26.1%)8 (13.3%)5 (31.3%)5 (13.2%)30 (18.8%)
 3-12 Hours1 (2.2%)01 (6.3%)02 (1.3%)
 Elimination: 24-36 Hours4 (8.7%)4 (6.7%)01 (2.6%)9 (5.6%)
 Window 3: Pre-Dose3 (6.5%)5 (8.3%)1 (6.3%)1 (2.6%)10 (6.3%)
 Drawn Before End of Flush1 (2.2%)2 (3.3%)01 (2.6%)4 (2.5%)
 Out-of-Window9 (19.6%)17 (28.3%)6 (37.5%)15 (39.5%)47 (29.4%)
Time Until Frozen for Evaluable Fresh Plasma PK Samples (minutes)
 N46601638160
 Mean (SD)35.1 (13.7)31.5 (11.3)35.4 (20.2)42.7 (38.0)35.6 (22.2)
 Median (Min-Max)33.0 (15.0 - 77.0)27.0 (15.0 - 60.0)30.0 (16.0 - 80.0)31.0 (15.0 - 236.0)30.0 (15.0 - 236.0)
 Samples with Freeze Time > 60 Minutes2 (4.3%)02 (12.5%)6 (15.8%)10 (6.3%)

Note: Sampling windows are presented in the CSR.

From: 14, TABLES REFERRED TO BUT NOT INCLUDED IN THE TEXT

Cover of Ampicillin Pharmacokinetics and Safety in Infants
Ampicillin Pharmacokinetics and Safety in Infants [Internet].
Benjamin DK Jr., Lewandowski A, Anand R.

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