Norwood procedure with non-valved right ventricle to pulmonary artery shunt improves ventricular energetics despite the presence of diastolic regurgitation: a theoretical analysis

Table 3 The influence of ventriculotomy on ventricular energetics

	E _es,RV (mmHg/ml)	SW (mmHg ml)	PVA (mmHg ml)	Mechanical efficiency (%)
3.5-mm SPS	8.5	905	1,157	78.2
6.0-mm non-valved RV-PA	7.5	827	977	84.7
	6.5	825	1,018	81.1
5.0-mm valved RV-PA	7.5	702	875	80.3
	6.5	698	916	76.2

SPS systemic to pulmonary artery shunt, RV-PA right ventricle to pulmonary artery shunt, E _es,RV end-systolic elastance of right ventricle, SW stroke work, PVA systolic pressure–volume area

ISSN: 1880-6562