Noninvasive assessment of TWA is feasible at > or = 8 years of age. Sustained TWA was present in 11% of normal children, but was absent at heart rates below 120 and rare (1.2%) below 60% of predicted maximum heart rate.
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. This record was last updated on 07/03/2016 and may not reflect the most current and accurate biomedical/scientific data available from NLM. The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/11332561