Table 3.
Evaluation of Events in Which Noninvasive Vital Sign Variable Information Fulfilled the Trigger Criteria for Medical Emergency Team (MET) Activation
| Event | No. (%) |
|---|---|
| All events | |
| Patients | 118 |
| Events in which MET activation criteria were reached | 401 |
| Criteria | |
| HR | |
| High | 21 (5.2) |
| Low | 3 (0.7) |
| RR | |
| High | 52 (13.0) |
| Low | 42 (10.5) |
| SpO2 low | 136 (33.9) |
| BP | |
| Systolic high | 16 (4.0) |
| Systolic low | 50 (12.5) |
| Diastolic high | 81 (20.2) |
| Duration of event, mean (range), min | 32 (0-420) |
| METmin events | |
| Patients | 83 |
| Events in which MET criteria were reached | 238 |
| Criteria | |
| HR | |
| High | 20 (8.4) |
| Low | 3 (1.3) |
| RR | |
| High | 52 (21.9) |
| Low | 36 (15.1) |
| SpO2 low | 43 (18.1) |
| BP | |
| Systolic high | 13 (5.5) |
| Systolic low | 38 (16.0) |
| Diastolic BP high | 33 (13.9) |
| Duration of event, mean (range), min | 39 (0-417) |
| METfull events | |
| Patients | 59 |
| Events in which MET criteria were reached | 111 |
| Criteria | |
| HR | |
| High | 15 (13.5) |
| Low | 2 (1.8) |
| RR | |
| High | 23 (20.7) |
| Low | 6 (5.4) |
| SpO2 low | 38 (34.2) |
| BP | |
| Systolic high | 4 (3.6) |
| Systolic low | 16 (14.4) |
| Diastolic high | 7 (6.3) |
| Duration of event, mean (range), min | 34 (0-222) |
Abbreviations: All events, those events fulfilling minimal trigger criteria for MET activation (real and artifact); BP, blood pressure; HR, heart rate; MET, medical emergency team; METfull, subset of all METmin events fulfilling trigger criteria and that should have caused MET activation; METmin, all real events fulfilling minimal trigger criteria for MET activation; RR, respiratory rate; SpO2, peripheral oxygen saturation by pulse oximetry.