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The Egyptian Heart Journal
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Table 1 Reference mean values of left ventricle strain measures on Philips machine by vendor

From: Assessment of left ventricular systolic function after VSD transcatheter device closure using speckle tracking echocardiography

Age distributionMean GCS (CI)Mean GRS (CI)
0–1NA 
2–9− 22.4% (− 23.2, − 21.6)NA
10–13− 19.0% (− 19.6, − 18.4) 
14–21− 18.0% (− 20.2, − 15.9)NA
Overall− 18.4% (− 19.7, − 17.1)NA
  1. Data presented as mean; NA not applicable (no studies in this age range), GCS global circumferential strain, GRS global radial strain
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