Characteristics of amikacin samples and patients with amikacin concentration measurements
| Characteristics | N (%)* |
| Male | 39 (73.6) |
| Age, median (range), years | 60 (10–92) |
| Prescribed amikacin using course, median (range), days | 13.06 (2–98) |
| Patients’ clinical location at the time of sampling | |
| Inpatient | 117 (96.7) |
| Outpatient | 4 (3.3) |
| Indication for sample measurement† | |
| Impaired renal function | 23 (43.4) |
| Elderly people (>65 years old) | 23 (43.4) |
| Combination medication | 46 (86.8) |
| Amikacin concentration type | |
| Peak concentration | 55 (45.5) |
| Trough concentration | 62 (51.2) |
| Unknown | 4 (3.3) |
| Amikacin prescribing decisions after amikacin concentration | |
| Unchanged | 7 (13.2) |
| Increased dose rate | 2 (3.8) |
| Decreased dose rate | 5 (9.4) |
| Multiple dose adjustment | 2 (3.8) |
| Change to other antibacterial drugs | 25 (47.2) |
| Ceased after the symptoms of infection subsided | 12 (22.6) |
There was a total of 53 patients and 121 amikacin samples.
*Unless otherwise specified.
†Most patients had multiple indications for amikacin sample measurement and we counted the quantity of each type separately.