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Effect of Left Erector Spinae Plane Block on Left Ventricular Functions
Sponsor: Aydin Adnan Menderes University
Summary
Many studies have shown a decrease in inotropic status (intrinsic function) after blockade of cardiac sympathetic innervation with thoracic epidural anesthesia (TEA) (4,5). There is no study in the literature investigating the cardiac effects of left thoracic ESP block. We think that left thoracic ESP block, like TEA, may also have cardiac effects. Therefore, we aimed to investigate the effect of left thoracic ESP block on left ventricular functions with transthoracic echocardiography (TTE).
Key Details
Gender
All
Age Range
18 Years - 75 Years
Study Type
OBSERVATIONAL
Enrollment
23
Start Date
2025-01-10
Completion Date
2026-02-02
Last Updated
2025-01-13
Healthy Volunteers
Yes
Conditions
Interventions
Echocardiography
HR, MAP, SBP and DBP will be recorded at baseline and 15 minutes after ESP block. Cardiac output (CO) will be calculated using echocardiographic data on stroke volume (SV) (measured from the LV outflow tract) and multiplied by HR. Changes in LV systolic function will be assessed with three parameters: fractional shortening (FS), ejection fraction (EF) using the Simpson method and S' wave of tissue Doppler imaging (TDI) of the mitral annulus (average of values at the medial and lateral annulus). LV diastolic function will be assessed with three parameters and interpreted according to the European Association of Cardiovascular Imaging guidelines. Pulsed wave (PW) Doppler of trans-mitral flow will be used to obtain the ratio between early (e) and late (atrial, a) waves. A PW Doppler between the LV outflow tract and the mitral valve will be performed to estimate the iso-volumetric relaxation time IVRT. TDI will be used to investigate myocardial relaxation at the mitral annular level (ear