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Real-time comparison of three different bedside strokevolumemeasurements (arterial waveform analysis, eosofageal doppler and 2D transthoracal ultrasound) validated against cardiac magnetic resonance imaging (CMRI)
20 healthy volounteers between age of 20-40 years, no previous medical history undergo simoultaneous left ventrikular strokevolume measurements using three different methods at rest. After datasampling and without moving, the subject then undergo Cardiac Magnetic Resonance Imaging with 2D-throughplane and cine tecnology for validation of volume measurements. The data is then analyzed using Bland-Altman calculation.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Healthy volunteers | Healthy volounteers with no previous medical history, age between 20-40. Both male and female. Subjects are provided extensive information about the study and the obligations and expectations included. All subjects sign a witnessed informed consent before inclusion. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Arterial waveform analysis, esofageal doppler, transthoracal cardiac ultrasound, Cardiac magnetic resonance imaging. | Procedure |
|
| Measure | Description | Time Frame |
|---|---|---|
| Limits of agreement (LOA) is less than 30% using CMRI as validation for each individual measurement of left ventricular stroke volume. | Study period (1 month) |
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Inclusion Criteria:Healthy volounteers age 20-40, BMI < 30, weight < 100 kg, no medications, sinus rythm on ECG, no contra-indications for MRI, ability to give written informed consent.
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Exclusion Criteria:
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Healthy volounteers
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| Name | Affiliation | Role |
|---|---|---|
| Goran Liffner, MD | Intensivvardskliniken, Linkoping University Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Departement for intensive care medicine, Universitetssjukhuset | Linköping | 581 85 | Sweden |
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| ID | Term |
|---|---|
| D009682 | Magnetic Resonance Spectroscopy |
| ID | Term |
|---|---|
| D013057 | Spectrum Analysis |
| D002623 | Chemistry Techniques, Analytical |
| D008919 | Investigative Techniques |
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