Cardiothoracic & vascular anesthesia
Accuracy of Cardiac Output Measured by Fourth-Generation FloTrac and LiDCOrapid, and Their Characteristics Regarding Systemic Vascular Resistance in Patients Undergoing Cardiac Surgery
Authors' conclusion
The accuracy of CIFT or CILR was not clinically acceptable for cardiac surgery. Fourth-generation FloTrac was unreliable in high SVRI. LiDCOrapid was inaccurate across a broad range of SVRI, and minimally affected by SVRI.
Study context
- Population
- Adults undergoing elective cardiac surgery, single university hospital135 measurements
- Participants
- 29 adults
- Exposure
- Fourth-generation FloTrac (CIFT) and LiDCOrapid (CILR) vs intermittent thermodilution via pulmonary artery catheter (CITD)
- Outcome
- Agreement with CITD
Methodological detailssingle-centre
- Single-centre
Main finding
As reported in the abstract
| Outcome | CIFT | CILR |
|---|---|---|
| R | 0.62 | 0.58 |
| Bias | −0.73 L/min/m² | −0.61 L/min/m² |
| Limit of agreement | −2.14-to-0.68 L/min/m² | −2.42-to-1.20 L/min/m² |
| Percentage error | 39.9% | 51.2% |
Observational data: associations, not effects.
Further findings
| Outcome | CIFT | CILR |
|---|---|---|
| Percentage error by SVRI (subgroup) | ||
| Low SVRI (<1,200 dyne×s/cm5/m) | 33.9% | 54.5% |
| Moderate SVRI (1,200-1,800 dyne×s/cm5/m) | 37.6% | 47.9% |
| High SVRI (>1,800 dyne·s/cm5/m²) | 49.3% | 50.6% |
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
Accuracy of Cardiac Output Measured by Fourth-Generation FloTrac and LiDCOrapid, and Their Characteristics Regarding Systemic Vascular Resistance in Patients Undergoing Cardiac Surgery. J Cardiothorac Vasc Anesth. Published 17 March 2023. doi:10.
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