Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Illustrative TEE—views of the transseptal puncture procedure. (A) shows septal tenting immediately after retraction of the sheath in the bicaval view (90–110°, usually). (B) shows the advanced needle aligned in an optimal direction, away from the aortic root, as well as within acceptable distance to the posterior left atrial wall. (C) catches the instance of septum perforation in the same patient. (D) illustrates the advanced introducer sheath within the left atrium.
