Fetal arrhythmias: prenatal evaluation and intrauterine therapeutics.When you're 6 weeks pregnant, however, the heart isn't fully developed. Pharmacological therapy of tachyarrhythmias during pregnancy. Low-cost fetal magnetocardiography: A comparison of superconducting quantum interference device and optically pumped magnetometers.

(n.d.) Uncomplicated fetal tachycardia in labour: dilemmas and uncertainties. Fetal arrhythmias: diagnosis, treatment and perinatal outcome. Maternal caffeine consumption and pregnancy outcomes: a narrative review with implications for advice to mothers and mothers-to-be. Management of fetal supraventricular tachycardia: three cases at a single institution. Fetal cardiac arrhythmias: current evidence. Management of fetal supraventricular tachycardia: case series from a tertiary perinatal cardiac center. Fetal arrhythmias: diagnosis and management. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. rare metabolic disorders, such as Pompes diseaseĪpproximately 30% of sustained bradycardia cases resolve without treatment.medications taken by the pregnant person, including beta-blockers and sedatives.inflammation and fibrosis of the SA node.ion channel dysfunction, such as Long-QT syndrome.Persistent fetal bradycardia is relatively rare, and causes include: Bradyarrhythmiasĭoctors may diagnose fetal bradycardia when a fetus’s heart rate is under 110 bpm for 10 minutes or longer. Ventricular tachycardia (VT) occurs when the heart’s lower chambers, the ventricles, beat too rapidly and cannot pump enough blood around the body.

SVT complicates approximately 1 in 1,000 pregnancies and may lead to hydrops or heart failure.ĭoctors may diagnose sinus tachycardia (ST) when a fetal heart rate is between 180 and 200 bpm.Ītrial tachycardia (AT) occurs when the heart’s upper chambers, the atria, beat too quickly. It occurs when the fetus’s heart rate is faster than 220 bpm.

is taking sympathomimetic medications such as terbutalineįetal supraventricular tachycardia (SVT) is the most common type of fetal tachycardia.

Tachyarrhythmiasįetal tachycardia refers to a heart rate faster than 180 bpm. However, doctors will monitor them closely as they may lead to proxysmal ventricular tachycardias (VTs).

Another 0.5% will develop supraventricular tachycardia.įetal PVCs also usually resolve over time. While most PACs are harmless and usually resolve over time, approximately 1% of fetuses with PACs will have significant structural heart disease. This arrhythmia happens when the fetus has extra heartbeats, or ectopic beats, that originate in the atria (PACs) or the ventricles (PVCs). The most common type of fetal arrhythmia is premature contractions or PCs. They include: Extrasystoles or premature contractions (PCs) There are many types of fetal arrhythmias.

Fetal heartbeat stopped restarted