## Inputs

## Results

## Detail: Rhodes Score

### Calculated Values:

- BSA: m
^{2} - Mitral Valve Area: (cm
^{2}) - Mitral Valve Area, indexed: (cm
^{2}/m^{2}) - Long Axis Ratio:
- Aortic Root, indexed: (cm/m
^{2})

### Discriminant Score:

...a discriminating score of less than -0.35 was predictive of death after a two-ventricle repair.

### Risk Factors:

....after two-ventricle repair ... in patients with two or more risk factors, there was 100% mortality.

Predictors of survival in neonates with critical aortic stenosis

[published erratum appears in Circulation 1995 Oct 1;92(7):2005]

LA Rhodes, SD Colan, SB Perry, RA Jonas and SP Sanders

Circulation 1991;84;2325-2335

## Detail: CHSS-1 Score

### Calculated Values:

- BSA: m
^{2} - LV Long Axis Z-Score:
- Aortic Root Z-Score:

### Score:

The result gives the predicted difference in percent survival for Norwood minus biventricular repair. A positive number would therefore favor a Norwood procedure and a negative number would favor a biventricular repair, with the magnitude of the number representing the predicted difference in percent survival or the survival benefit for the optimal pathway.

Critical aortic stenosis in the neonate: A multi-institutional study of management, outcomes, and risk factors.

Lofland GK, McCrindle BW, Williams WG, Blackstone EH, Tchervenkov CI, Sittiwangkul R, Jonas RA.

J Thorac Cardiovasc Surg. 2001 Jan;121(1):10-27.

Relationship of the dimension of cardiac structures to body size: an echocardiographic study in normal infants and children.

Daubeney PE, Blackstone EH, Weintraub RG, Slavik Z, Scanlon J, Webber SA.

Cardiol Young. 1999 Jul;9(4):402-10.

## Detail: Discriminant Score

### Calculated Values:

- BSA: m
^{2} - LV Long Axis Ratio:
- Aortic Valve Z-Score:

### Score:

Taking a discriminant cutoff of -0.65, this model accurately predicted outcome in 95% of survivors and 80% of events (90% overall). Higher cutoff values allowed slightly improved specificity at the expense of sensitivity. The greatest specificity while maintaining >85% sensitivity for predicting survival with a biventricular repair was at a discriminant cutoff of <-0.46, which predicted outcome accurately in 86% of survivors and 82% of events.

### Score (if EFE omitted):

If EFE is omitted from the analysis (owing to high interobserver variability in grading), a discriminant cutoff of -0.46 accurately predicted 91% of survivors and 80% of events (87% overall).

Validation and Re-Evaluation of a Discriminant Model Predicting Anatomic Suitability
for Biventricular Repair in Neonates With Aortic Stenosis

Steven D. Colan, Doff B. McElhinney, Elizabeth C. Crawford, John F. Keane, and James E. Lock

J. Am. Coll. Cardiol. 2006;47;1858-1865

## Detail: CHSS-2 Score

### Calculated Values:

- BSA: m
^{2} - MV Z-Score:
- Heart LAX, indexed:
- Minimum LVOT Diameter (transformed):
- Mid-Aortic Arch, indexed:

### Score:

The result gives the predicted difference in percent survival for Norwood minus biventricular repair. A positive number would therefore favor a Norwood procedure and a negative number would favor a biventricular repair, with the magnitude of the number representing the predicted difference in percent survival or the survival benefit for the optimal pathway.

Critical left
ventricular outflow tract obstruction: The disproportionate impact of
biventricular repair in borderline cases.

Hickey EJ et al.; Congenital Heart Surgeons' Society.

J Thorac Cardiovasc Surg. 2007 Dec;134(6):1429-36.

Relationship of the dimension of cardiac structures to body size: an echocardiographic study in normal infants and children.

Daubeney PE, Blackstone EH, Weintraub RG, Slavik Z, Scanlon J, Webber SA.

Cardiol Young. 1999 Jul;9(4):402-10.