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Transversal retrospective and unicentric study. The investigators sought to determine the normal values for two-dimensional myocardial left atrial strain for the cardiology ultrasound system available in their centre (Philips EPIQ ultrasound machine and 10.8.5 QLAB cardiac analysis software). Studies performed in their department which meet the criteria for an adequate strain analysis will be retrospectively reviewed.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| two-dimensional speckle tracking | Diagnostic Test | Analysis of myocardial left atrial strain using two-dimensional speckle tracking echocardiography. |
| Measure | Description | Time Frame |
|---|---|---|
| Global peak reservoir strain. | Percentage of peak reservoir strain for 4-, 2- and 3-chambers will be combined to report percentage of global peak reservoir strain. | Through study completion, an average of 4 months. |
| Global pump strain. | Percentage of pump reservoir strain for 4-, 2- and 3-chambers will be combined to report percentage of global pump strain. | Through study completion, an average of 4 months. |
| Global conductance strain. | Measured as the difference between global reservoir strain and gobal pump strain. | Through study completion, an average of 4 months. |
| Global reservoir strain rate. | Reservoir strain rate for 4-, 2- and 3-chambers will be combined to report global reservoir strain rate. | Through study completion, an average of 4 months. |
| Global conductance strain rate. | Conductance strain rate for 4-, 2- and 3-chambers will be combined to report global conductance strain rate. | Through study completion, an average of 4 months. |
| Global pump strain rate. | Pump strain rate for 4-, 2- and 3-chambers will be combined to report global pump strain rate. | Through study completion, an average of 4 months. |
| Measure | Description | Time Frame |
|---|---|---|
| Age in years | Through study completion, an average of 4 months. | |
| Sex | male or female | Through study completion, an average of 4 months. |
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Inclusion Criteria:
Exclusion Criteria:
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Healthy controls.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Lidia Bos Real | Contact | 0034935537058 | lbos@santpau.cat |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hospital de la Santa Creu i Sant Pau | Recruiting | Barcelona | 08041 | Spain |
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| Weight in kilograms | Through study completion, an average of 4 months. |
| Height in meters | Through study completion, an average of 4 months. |
| Left atrial volume | Measured by biplanar volumetric method | Through study completion, an average of 4 months. |
| Left ventricular ejection fraction | Measured by biplanar Simpson's method | Through study completion, an average of 4 months. |
| Left ventricular telediastolic volume | Measured by Simpson's method | Through study completion, an average of 4 months. |
| Left ventricular dimensions | Assessed by the following parameters: telediastolic diameter, interventricular septal thickness, posterior wall thickness (in mm) | Through study completion, an average of 4 months. |
| E/A ratio | Transmitral flow profile. | Through study completion, an average of 4 months. |
| E/e' ratio | Tissue doppler derived parameter. | Through study completion, an average of 4 months. |