U.S. doctors online nowAsk doctors free
Largo, FL
A 29-year-old female asked:

Cardiologist read qtc if 453 in a toddler. is this something to worry about? getting it checked again in a few months

3 doctor answers10 doctors weighed in
Dr. Bennett Werner
Cardiology 45 years experience
That's normal: A qtc of 453 ms is normal, albeit, at the upper limits. Causes can include low potassium, calcium or magnesium (baby having any recent diarrhea or vomiting?). Many drugs can cause this too. Is there a family history of sudden, unexpected, premature death? If not, i wouldn't think much of this - long qt syndromes tend to run in families.
Dr. Dominic BLURTON
Pediatrics - Cardiology 23 years experience
Long qt: Assuming no concerning clinical history, i would say just follow up and don't worry about it for now.
Dr. Christine Norton
Family Medicine 25 years experience
There are medications you may want to avoid if you have a prolonged QT . This should be discussed with your doctor as well.
Sep 10, 2013
Dr. Peter Karpawich
47 years experience
Probably not: Any family history of long qt syndrome? Was it actually personally read by the cardiologist or only computer-generated reading? Computer readings are often inaccurate. Follow-up can't hurt, but, at best, .453 is only borderline. Probably normal.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Feb 26, 2016


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.