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.
Study Type
OBSERVATIONAL
Enrollment
43
Analysis of myocardial left atrial strain using two-dimensional speckle tracking echocardiography.
Hospital de la Santa Creu i Sant Pau
Barcelona, Spain
RECRUITINGGlobal 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.
Time frame: 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.
Time frame: Through study completion, an average of 4 months.
Global conductance strain.
Measured as the difference between global reservoir strain and gobal pump strain.
Time frame: 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.
Time frame: 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.
Time frame: 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.
Time frame: Through study completion, an average of 4 months.
Age in years
Time frame: Through study completion, an average of 4 months.
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Sex
male or female
Time frame: Through study completion, an average of 4 months.
Weight in kilograms
Time frame: Through study completion, an average of 4 months.
Height in meters
Time frame: Through study completion, an average of 4 months.
Left atrial volume
Measured by biplanar volumetric method
Time frame: Through study completion, an average of 4 months.
Left ventricular ejection fraction
Measured by biplanar Simpson's method
Time frame: Through study completion, an average of 4 months.
Left ventricular telediastolic volume
Measured by Simpson's method
Time frame: 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)
Time frame: Through study completion, an average of 4 months.
E/A ratio
Transmitral flow profile.
Time frame: Through study completion, an average of 4 months.
E/e' ratio
Tissue doppler derived parameter.
Time frame: Through study completion, an average of 4 months.