Anesthesia
Conditions
Keywords
monitoring, cardiac output, perfusion index
Brief summary
Is is debated whether administration of pure vasopressor may augment cardiac output (CO) by means of preload modulation. We wish to test this in 20 patients under general anesthesia, with preload dependency induced by head-up-tilt and preload modulation with infusion of phenylephrine. To document any changes in CO the patients will be monitored by Lithium dilution method. Furthermore we will monitor changes in peripheral perfusion index and test the ability of this non-invasive modality to track changes in CO.
Interventions
None listed
Sponsors
Study design
Eligibility
Inclusion criteria
* Planned surgery under general anesthesia
Exclusion criteria
* atrial fibrillation * refusal to participate
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in cardiac output | 30 minutes |
| Changes in peripheral perfusion index | 30 minutes |