‘Tricky diagnosis’
LQTS specialist Peter Aziz, MD, director of pediatric electrophysiology at the Cleveland Clinic, agreed with these findings.
“Most of us ‘channelopathists’ who see LQTS for a living have a good grasp of the disease, but it can be elusive for others,” he said in an interview. “This is a tricky diagnosis. There are ends of the spectrum where people for sure don’t have it and people for sure do. Most clinicians are able to identify that.”
However, he added, “A lot of patients fall into that gray area where it may not be clear at first, even to an expert. But the expert knows how to do a comprehensive evaluation, examining episodes and symptoms and understanding whether they are relevant to LQTS or completely red herrings, and feeling confident about how they calculate the acute interval on an electrocardiogram.”
“All of these may seem mundane, but without the experience, clinicians are vulnerable to miscalculations,” he said. “That’s why our bias, as channelopathists, is that every patient who has a suspected diagnosis or is being treated for LQTS really should see an expert.”
Similarly, Arthur A.M. Wilde, MD, PhD, of the University of Amsterdam, and Peter J. Schwartz, MD, of IRCCS Istituto Auxologico Italiano, Milan, write in a related editorial that it “has to be kept in mind that both diagnostic scores and risk scores are dynamic and can be modified by time and by appropriate therapy.
“Therefore, to make hasty diagnosis of a disease that requires life-long treatment is inappropriate, especially when this is done without the support of adequate, specific experience.”
No commercial funding or relevant financial relationships were reported.
A version of this article first appeared on Medscape.com.