Blunt transseptal catheterization of the left heart.
D000293:Adolescent; D000328:Adult; D000368:Aged; D006328:Cardiac Catheterization; D002648:Child; D002675:Child, Preschool; D006330:Heart Defects, Congenital / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D008875:Middle Aged