Evaluation of Right Ventricular Systolic Function by TAPSE Parameter From Subcostal View

Study Overview
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Brief Summary
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The purpose of this study is to validate a new echocardiographic parameter evaluating right ventricular function.

Detailed Description
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The key conventional echocardiographic parameter evaluating right ventricular systolic function is the tricuspid annular plane systolic excursion (TAPSE). It is measured in apical four chamber view by conventional M-mode imaging. Other echocardiographic parameters of right ventricular systolic function (Fractional Area Change; Tricuspid Lateral Annular Systolic Velocity; Right Ventricular Index of Myocardial Performance) are evaluated in apical four chamber view as well. However, this view might not be clearly visible in the clinical setting of critical illness and subcostal view is often preferred for its higher quality. Unfortunately, conventional M-mode can not be used for measurement in this view but anatomical M-mode imaging can. Therefore, the investigators decided to evaluate whether TAPSE measured in subcostal view by anatomical M-mode (sTAPSE) correlates with conventional TAPSE and whether reliably reflects systolic right ventricular function.

Official Title
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Echocardiographic Evaluation of Right Ventricular Systolic Function by TAPSE Parameter Measured From Subcostal View Using Anatomical M-mode - Validation Clinical Study

Conditions
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Transthoracic Echocardiography

Intervention / Treatment
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* Diagnostic Test: Transthoracic echocardiography


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Inpatients All patients hospitalised in intensive care unit indicated for transthoracic echocardiography examination Exclusion Criteria: Age <18 years Insufficient imaging quality of transthoracic echocardiography Refusal of echocardiographic examination by patient

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Critically ill patients<br>Critically ill patients hospitalised at the intensive care unit indicated to echocardiographic examination. | Diagnostic Test: Transthoracic echocardiography<br>* Conventional transthoracic echocardiographic examination at the intensive care unit.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Validity of sTAPSE in prediction of right ventricular systolic dysfunction | sTAPSE is a new potential echocardiographic parameter of right ventricular systolic function measurable from subcostal view. | During the intervention | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Correlation of sTAPSE with conventional TAPSE | sTAPSE is a new potential echocardiographic parameter of right ventricular systolic function measurable from subcostal view. | During the intervention |