Table 3.

Estimate of birth prevalence of left-sided obstructive lesions.

LESION	NATIONAL MEAN OF ALL CASES (PER 1000 LIVE BIRTHS)	ESTIMATED PREVALENCE OF CRITICAL CASES (PER 1000 LIVE BIRTHS)
Hypoplastic left heart	0.27	All
Aortic stenosis	0.40	1/4
Coarctation of aorta	0.41	1/2
Interrupted aortic arch	0.07	All
Total	1.15	0.55

Note: Data from Liske et al.⁸