Transabdominal chorionic villus sampling: a modified freehand ultrasonographically guided technique.

Hill, L M; Laifer, S A · Am J Obstet Gynecol · 1992

Level V

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Abstract

A simple modification of the technique of transabdominal chorionic villus sampling is described. This technique uses a short piece of extension tubing between the needle hub and aspirating syringe. The advantages of this technique are discussed.

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