Doctor insights on:
Causes Of Fetal Tachycardia
My bet: I'm not a pediatric or neonatal cardiologist, but i believe that the most common cause for an abnormal tachycardia would be a congenital accessory bypass tract that is either overt or concealed. (remember that all fetuses and babies have very rapid hr which is abnormal for older children but normal for them.). ...Read more
It depends: Whether supraventricular tachycardia (svt) causes problems in a fetus depends on how often and for how long the fetus remains in svt, and on the rate of the svt (how fast). Typically, if a fetus is having problems with svt, a fetal cardiac ultrasound will detect that the heart function is declining and there may be evidence for abnormal fluid collections (so called non-immune hydrops). ...Read moreSee 1 more doctor answer
Yes: Black-outs (or syncope) are often caused by transient reductions in blood flow to the brain from a variety of causes. With ventricular tachycardia, the abnormal rhythm may be associated with a reduction in cardiac output and a temporary reduction in brain blood flow that can lead to syncope. ...Read moreSee 1 more doctor answer
Not really pulseless: When VT occurs at a fast enough rate, there is inadequate time for ventricular filling, cardiac output falls, and blood pressure falls. You may not be able to palpate a pulse but an arterial line would show a waveform that is reduced in amplitude. Rate is the key. As tissue perfusion fails, acidosis, hypoxemia and hyperkalemia result leading to ventricular fibrillation and death. ...Read more
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