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.
(a) Ultrasound image of the parasternal intercostal space using color Doppler shows to avoid the blood vessel at the lower border of the rib and (b) ultrasound image showing the needle entry into the lower border of the rib for parasternal intercostal nerve block administration
