Table 3. Triggers for FBT and physiological expectations.
| Reasons for bolus | Main reason, N (%) | Secondary reason, N (%) | Expectation, median (IQR) | |
|---|---|---|---|---|
| After bolus | One hour after bolus | |||
| Hypotension (mmHg) | 36/77 (47%) | 12/77 (16%) | 2.6 (-3.1–6.8) | 1.3 (-3.5–4.1) |
| Poor urine output (ml) | 16/77 (21%) | 13/77 (17%) | N/A | 0.0 (-47.5–20.0) |
| Tachycardia (bpm) | 14/77 (18%) | 13/77 (17%) | -4.2 (-11.0–0.0) | -3.7 (-9.6–0.2) |
| Low cardiac index (L/min/m2) | 5/77 (6%) | 5/77 (6%) | 0.06 (-0.05–0.31) | 0.00 (-0.12–0.20) |
| High lactate (mmol/L) | 4/77 (5%) | 6/77 (8%) | 0.0 (-0.2–0.3) | -0.2 (-0.4–0.2) |
| Low CVP (mmHg) | 2/77 (3%) | 3/77 (4%) | 0.5 (-0.7–2.4) | 0.0 (-1.1–1.6) |
| Low SvO2/ ScvO2 (%) | 0/77 (0%) | 1/77 (1%) | Too small sample size | Too small sample size |
| None given | N/A | 24/77 (31%) | N/A | N/A |
Values are presented as median with (IQR) or numbers (percentages) of patients.
MAP = Mean arterial pressure. UO = Urine output. HR = Heart rate. CI = Cardiac index. CVP = Central venous pressure. ScvO2 = Central venous oxygen saturation. N/A = Not applicable.