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Ann Pediatr Cardiol. 2012 Jul;5(2):179-84. doi: 10.4103/0974-2069.99622.

The use of Z-scores in paediatric cardiology.

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Department of Congenital Heart Disease, Evelina Children's Hospital, Guy's and St Thomas' NHS Trust, London, UK.


Z-scores are a means of expressing the deviation of a given measurement from the size or age specific population mean. By taking account of growth or age, Z-scores are an excellent means of charting serial measurements in paediatric cardiological practice. They can be applied to echocardiographic measurements, blood pressure and patient growth, and thus may assist in clinical decision-making.


Blood pressure; Z-score; cardio Z; echocardiography; paediatric cardiology

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