Rebuttal to: "As simple as possible, but not simpler: estimating the effective arterial elastance at bedside".

Highlights from the article: These authors suggested that effective arterial elastance (Ea) using systolic arterial pressure (SAP) incorporates the oscillatory component of arterial load, whereas Ea using mean arterial pressure (MAP) does not. We used applanation tonometry-derived carotid pressure for estimating the central pressure and calculated Ea using dicrotic pressure from the carotid pressure and stroke volume from esophageal Doppler. We have estimated peripheral Ea from the invasive radial pressure using both MAP (Ea SB MAP sb ) and 90% of systolic arterial pressure (Ea SB 90%SAP sb ) as surrogates for Pes.