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.
Genotype differences in standing test dynamics among 14 long QT syndrome (LQTS) type 1 (LQT-1) and 13 LQTS type 2 (LQT-2) children. The 2 LQTS type 3 children are not shown. Left: Median and interquartile range of absolute QT interval, corrected QT interval (QTc), and heart rate (HR) of controls (blue), LQT-1 (green), and LQT-2 (yellow). Right:Relative change of QT interval, QTc, and HR to baseline values. Transition from supine to standing is indicated by the black solid line.
