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The Cheetah NICOM is a non-invasive cardiac output monitor that has been validated in various clinical contexts but not during the occlusion of major arteries, as takes place in vascular surgery. The present study will evaluate the precision and validity of the measures taken by the device during open vascular surgery procedures. The measurements will be compared to the those calculated by transesophageal echocardiography at various key points during the surgeries. The validity of the cardiac output, stroke volume and stroke volume variation measurements will be evaluated, as well as the device's ability to track rapid changes in cardiac output.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Aortic Aneurysm Repair | The impact of large abdominal retractors and an abdominal aortic cross-clamp on the validity of the Cheetah NICOM's measurements will be evaluated in this group. |
| |
| Femoral Endarterectomy | The impact of the clamping of a large peripheral arterial vessel on the validity of the Cheetah NICOM's measurements will be evaluated in this group. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Cheetah NICOM | Device | The Cheetah NICOM will be installed on all patients to evaluate the validity of its measurements. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Validity of Stroke Volume (SV) Measurements by the Cheetah NICOM | The SV measured by the Cheetah NICOM will be compared to the one measured by transesophageal echocardiography at multiple time points during the surgery. | Per vascular surgery procedure |
| Measure | Description | Time Frame |
|---|---|---|
| Stroke Volume (SV) with a vascular cross-clamp | The SV measured by the Cheetah NICOM will be compared to the one measured by transesophageal echocardiography at multiple points once a vascular cross-clamp is installed. | Per vascular surgery procedure when a cross-clamp is installed |
| Stroke Volume (SV) trending ability |
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Inclusion Criteria:
Exclusion Criteria:
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Patients undergoing either an open aortic aneurysm repair surgery or a femoral endarterectomy under general anesthesia.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Eric Peters | Contact | 514-252-3400 | ||
| Nadia Godin, RN | Contact | 514-252-3400 | 3193 |
| Name | Affiliation | Role |
|---|---|---|
| Louis-Philippe Fortier, MD, MSc | Maisonneuve-Rosemont Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Maisonneuve-Rosemont Hospital | Recruiting | Montreal | Quebec | H1T 2M4 | Canada |
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| ID | Term |
|---|---|
| D001014 | Aortic Aneurysm |
| D058729 | Peripheral Arterial Disease |
| ID | Term |
|---|---|
| D000783 | Aneurysm |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
| D001018 | Aortic Diseases |
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| ID | Term |
|---|---|
| D017548 | Echocardiography, Transesophageal |
| ID | Term |
|---|---|
| D004452 | Echocardiography |
| D057791 | Cardiac Imaging Techniques |
| D003952 | Diagnostic Imaging |
| D019937 | Diagnostic Techniques and Procedures |
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| Transesophageal echocardiography (TEE) | Device | TEE will serve as gold standard measurements for the evaluation of the Cheetah NICOM. |
|
Between each pair of consecutive data points, the change of SV measurements given by the Cheetah NICOM will be compared to those given by transesophageal echocardiography. |
| Per vascular surgery procedure |
| D050197 |
| Atherosclerosis |
| D001161 | Arteriosclerosis |
| D001157 | Arterial Occlusive Diseases |
| D016491 | Peripheral Vascular Diseases |
| D003933 | Diagnosis |
| D014463 | Ultrasonography |
| D006334 | Heart Function Tests |
| D003935 | Diagnostic Techniques, Cardiovascular |