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Re: ULTRASOUND digest 1068From: Joshua Copel (joshua.copel@yale.edu)Thu Nov 16 06:49:35 2000
Yes, the outflows can be quite difficult to image and trace with CDH, and sizes may be distorted secondary to cardiac position. Cardiac anomalies are also increased in frequency. See: Fogel M, Copel JA, Cullen MT, Hobbins JC, Kleinman CS: Congenital heart disease and fetal thoracoabdominal anomalies: Association in utero and the importance of cytogenetic analysis. Am J Perinatol 1991;8:411-416. Resistance to RV output (afterload) is more affected by placental impedence to flow, or changes to the main pulmionary trunk/ductus than changes to the branch pulmonary arteries. Some have suggested that Doppler of branch pulmonary arteries can predict lung hypoplasia, but based on Ohm's law, doubt would see RV or main pulm trunk changes. Sorry, don't have the refs at my fingertips on the lung hypoplasia stuff. Josh Copel
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