Heart Abnormalities among Covid-19 Vaccinated Children

A follow up study (https://bit.ly/3wVSYU8) conducted at the Seattle
Children’s Hospital of children suffering myocarditis following their
second dose of the Pfizer mRNA vaccine was published in the
Journal of Pediatrics on 25 March 2022.
The study followed up 16 male children, with an average age of 15
years, 3 to 8 months after their initial diagnosis with myocarditis
within a short time frame following mRNA vaccination.
The authors used Electrocardiograms and Cardiac Magnetic Resonance
(CMR) to examine abnormalities in the heart such as myocardial
scarring, fibrosis, strain, and reduced ventricular muscle extension
which can be associated with reduced capacity to pump blood and
increased risk of heart attack. The authors found that although
there was some measure of resolution after 3 – 8 months most
subjects still had some persistent abnormalities.
Although (initial) symptoms (such as chest pain, and exercise
intolerance) were transient and most patients appeared to respond to
treatment (solely with NSAIDS such as ibuprofen), we demonstrated
persistence of abnormal findings on CMR at (3-8 months) follow up
in most patients, albeit with improvement in extent of LGE (a measure
of the heart’s capacity to pump efficiently).
The authors warned:
The presence of LGE is an indicator of cardiac injury and fibrosis
and has been strongly associated with worse prognosis in patients
with classical acute myocarditis. A meta-analysis including 8 studie
found that presence of LGE is a predictor of all cause death,
cardiovascular death, cardiac transplant, rehospitalization, recurrent
acute myocarditis and requirement for mechanical circulatory support.
Full video: https://youtu.be/smKDRiiVIpY