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Functional Parameters

Paediatric MAPSE and TAPSV Z-score calculator

Selected paediatric functional reference calculations using the Koestenberger et al. 2012 continuous age-regression models.

ZED Quick Tools · Functional Parameters

Functional Parameters Z-scores

Free

Select a validated longitudinal-function reference and enter chronological age directly in decimal years.

Reference selection

Mitral annular plane systolic excursion (MAPSE)

Study population aged 1 day–18 years. Enter chronological age directly as decimal years; do not extrapolate beyond 18 years.

Patient and measurement

Enter age and observed value

Enter chronological age and the observed measurement to calculate the selected reference.

Calculated in this browser. Entered values and results are not saved or sent to ZED Cardio.

Functional echocardiography

How to measure MAPSE

Semi-3D drawing of the heart in the apical 4-chamber view, apex at the top. A vertical M-mode cursor runs from the transducer at the apex through the lateral mitral annulus (1). Beside it, the M-mode recording along that cursor over three beats, with an ECG below: the annular tissue band rises toward the transducer in systole and falls back in diastole. MAPSE (2) is measured on the band's leading edge, from its lowest point just after the P wave to its highest point in the following systole.
Where to measure MAPSE: M-mode from the apical 4-chamber view, with the cursor on the lateral mitral annulus (Koestenberger et al. 2012).
  1. 1 · Lateral mitral annulus. M-mode cursor on the lateral mitral annulus, aligned as vertically as possible with the LV apex.
  2. 2 · MAPSE. From the nadir of the annular motion after the P wave to the point of maximal upward excursion.
  3. Average 3 to 5 consecutive beats. Do not use angle correction. Lateral annulus only: this reference does not cover the septal annulus.

Functional echocardiography

How to measure TAPSV

Semi-3D drawing of the heart in the apical 4-chamber view, apex at the top. A pulsed-wave tissue Doppler beam runs from the transducer at the apex, along the right ventricular free wall, to the lateral corner of the tricuspid annulus, where a 5 mm sample volume sits on the annulus (1); a short double arrow beside it shows that the beam is parallel to the annular motion. Beside it, the tissue Doppler recording over three beats with an ECG below: one systolic wave above the baseline per beat, and its peak, S′, is measured from the baseline (2). The diastolic waves below the baseline are faint and unlabelled.
Where to measure TAPSV (RV S′): pulsed-wave tissue Doppler from the apical 4-chamber view, with a 5 mm sample volume at the lateral tricuspid annulus (Koestenberger et al. 2012).
  1. 1 · Lateral tricuspid annulus. Pulsed-wave tissue Doppler, 5 mm sample volume at the lateral corner of the tricuspid annulus, at the attachment of the anterior leaflet. Beam as parallel as possible to annular motion.
  2. 2 · S′ (TAPSV). Peak systolic annular velocity.
  3. Average 3 to 5 cardiac cycles.