Output, Low Cardiac, Shock, Cardiogenic, Surgery
Conditions
Brief summary
Cardiac surgery is at high risk of low cardiac output syndrome after procedure. Monitoring cardiac function, and especially cardiac output, is important to identify cardiovascular dysfunction and to introduce and adjust optimal therapies. Invasive monitor such as pulmonary arterial catheter or transpulmonary thermodilution provide precise measurements but need an invasive access to arterial and central venous route, with possible complications. Cardiographic bioimpedencemetry (Niccomo device, Imedex Corp) allows a non invasive measurement of cardiac output and some other parameters of cardiovascular function. Nevertheless, the reliability of this device has been little studied after cardiac surgery.
Interventions
Niccomo monitoring added to pulmonary arterial catheter monitoring
Sponsors
Study design
Eligibility
Inclusion criteria
* age \> 18 y/o * Patients benefiting from cardiac surgery AND pulmonary arterial catheter monitoring
Exclusion criteria
* Aortic regurgitation grade 3-4 * Uncontrolled Hypertension (MAP \> 130 mmHg) * Circulatory or cardiac assistance * Active pacemaker
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| agreement between cardiac outputs measured by Pulmonary Arterial Catheter (PAC) and Niccomo | 48 hours | Cardiac outputs and systolic ejection volumes are measured at 10 different time-points and agreement between the 2 devices are explored |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Systolic Time Ratio | 48 hours | Niccomo values at 10 different time-points |
| Pre-ejection Period | 48 hours | Niccomo values at 10 different time-points |
| Velocity Index | 48 hours | Niccomo values at 10 different time-points |
| Left Ventricular Ratio | 48 hours | Niccomo values at 10 different time-points |
Countries
France