Table 1.

Thresholds for Hemodynamic Vulnerability.

	Single Ventricle	Non-Single Ventricle
Systemic Ventricular End Diastolic Pressure	≥18mmHg	≥18mmHg
Systemic Arterial Saturation	<78%	<95%
Mixed Venous Saturation	<50%	<60%
Main Pulmonary Artery Mean Pressure	≥17mmHg	n/a
Main Pulmonary Artery Systolic Pressure	n/a	≥45mmHg