Table 1.
Inclusion and exclusion criteria for the analysis of TTI influencing factors and meta-analysis of human TTI measurements.
| Exclusion Criteria | Inclusion Criteria | |
|---|---|---|
| Reported Outcomes | No mention of TTI | Human and animal TTI measurements and analysis of factors influencing TTI |
| Exposure of Interest | TTI without connection to defibrillation | Defibrillation and cardioversion |
| Implanted device-based methods | Electrode and paddle TTI measurements | |
| Relationship between tidal volume and TTI amplitude | ||
| Transthoracic impedance cardiography | ||
| Setting | Impedance tracking in real time | Outpatient and inpatient hospital reports |
| Date | Papers published before 1970 | Papers published 1970–2021 |
| Language | Non-English | English |
| Additional criteria for meta-analysis of human TTI measurements | Animal measurements | Human TTI measurements only |
| Crucial data missing (mean, highest and lowest) | Documentation of at least mean, highest or lowest TTI | |
| Case studies | Minimum of 5 subjects |