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| Name | Class |
|---|---|
| Aarhus University Hospital | OTHER |
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The purpose of this study is to determine if extra systoles can be used to predict fluid responsiveness perioperatively in patients undergoing on pump coronary artery bypass graft (CABG) surgery. As an additional study we will investigate the ability of a mini fluid challenge to predict response of a larger volume of fluid.
From induction of anaesthesia to cardioplegia we will serve two fluid challenges. Before and after each challenge we will collect hemodynamic data and use this to asses our two hypotheses.
Fluid responsiveness (the outcome to predict) will be defined as a 15% increase in stroke volume(SV) from immediately before fluid infusion is initiated (baseline) to after the full fluid infusion. Stroke volume is derived from the gold-standard pulmonary artery catheter measurement of cardiac output(CO), which is standard monitoring for these patients (SV = CO/heart rate). From subsequent offline analysis of the extracted curve data we will investigate if post-ectopic characteristics from identified extra systoles during the baseline period can predict fluid responsiveness (i.e. the SV change). This analysis addresses the primary hypothesis. Also, we will analyse the arterial waveform related to the mini fluid challenge for morphologic changes (comparing heart beats before the infusion with heart beats during the infusion) and see if such transient changes, e.g. in systolic blood pressure, are able to predict fluid responsiveness. This analysis addresses the secondary hypothesis.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Fluid Therapy | Systematisation of fluids during CABG surgery |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Fluids | Procedure |
|
| Measure | Description | Time Frame |
|---|---|---|
| Cardiac output changes | From initiation of fluid infusion | At 5 minutes |
| Systolic arterial pressure changes | In relation to extra systoles | 10 minutes prior to fluid infusion |
| Measure | Description | Time Frame |
|---|---|---|
| Arterial waveform changes | From initiation of the mini fluid challenge (part of the compiled fluid challenge) | 10 seconds |
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Inclusion Criteria:
Exclusion Criteria:
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All patients scheduled for elective on pump CABG surgery at Aarhus University Hospital, SKS.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Anesthesia and Intensive Care Medicine, Cardiothoracic Anesthesia, Head & Heart Centre, Aarhus University Hospital | Aarhus N | 8200 | Denmark |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 34041648 | Derived | Berg JM, Nielsen DV, Abromaitiene V, Hjornet NE, Vistisen ST. Changes in arterial blood pressure characteristics following an extrasystolic beat or a fast 50 ml fluid challenge do not predict fluid responsiveness during cardiac surgery. J Clin Monit Comput. 2022 Jun;36(3):889-900. doi: 10.1007/s10877-021-00722-z. Epub 2021 May 26. |
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No consent for sharing personal data.
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| ID | Term |
|---|---|
| D020896 | Hypovolemia |
| D003324 | Coronary Artery Disease |
| D004487 | Edema |
| ID | Term |
|---|---|
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D003327 | Coronary Disease |
| D017202 | Myocardial Ischemia |
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| ID | Term |
|---|---|
| D005440 | Fluid Therapy |
| ID | Term |
|---|---|
| D004358 | Drug Therapy |
| D013812 | Therapeutics |
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| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
| D001161 | Arteriosclerosis |
| D001157 | Arterial Occlusive Diseases |
| D014652 | Vascular Diseases |
| D012816 | Signs and Symptoms |