10/6/2023 0 Comments Normal heartbeat for 10 week fetusAmniocentesis and chromosomal analysis to screen for genetic abnormalities.Doppler ultrasound to evaluate fetal blood flow.Fetal echocardiogram to evaluate your baby’s heart structure and function and identify the type of arrhythmia.Ultra-fast MRI for a more detailed view of fetal anatomy.High-resolution anatomy ultrasound to confirm the diagnosis, evaluate the condition and look for other abnormalities or complications.At Texas Children’s Fetal Center, we arrange for you to visit as quickly as possible for a comprehensive assessment by a team of specialists experienced in the full range of fetal cardiac arrhythmias, including maternal-fetal medicine (MFM) physicians (OB/GYNs specializing in high-risk pregnancies), fetal and pediatric cardiologists, fetal imaging experts, neonatologists, and pediatric electrophysiologists, specialists in heart rhythm problems. Prompt referral to a fetal cardiac center is vital for accurate, thorough diagnosis of the type of tachyarrhythmia and any related conditions, ensuring proper treatment. Amniotic fluid levels will also be measured to determine if there is excess amniotic fluid, or polyhydramnios, a possible sign of fetal hydrops. If an abnormally fast heartbeat is diagnosed, blood and urine tests may be run to screen for underlying maternal conditions that may be causing the fetal condition. Generally, the mother has no symptoms and notices no change in fetal movement. In some cases, rhythm abnormalities may not start until later in pregnancy. VT may be associated with myocarditis (inflammation of the heart muscle), complete heart block, or congenital long QT syndrome (a rhythm disorder that can cause fast, chaotic heartbeats).įetal tachyarrhythmia is typically diagnosed during a routine prenatal ultrasound or when the doctor listens to the fetal heartbeat. Ventricular tachycardia (VT) – In this rare condition, the fetus’ ventricular heartbeat is faster than the atrial rate.If this irregular heart rhythm is sustained, it places the fetus at increased risk of hydrops. AFL may be associated with congenital heart disease or chromosomal abnormalities. Atrial flutter (AFL) – In atrial flutter, the atria beat significantly faster than the ventricles.SVT is typically caused by problems with the heart’s electrical system, which sends the electrical impulses that cause the heart muscles to contract, forming your heartbeat. It occurs when both the atria and ventricles are beating greater than 220 bpm. Supraventricular tachycardia (SVT) – This is the most common form of fetal tachyarrhythmia.Sinus tachycardia may be brief, due to fetal activity, or it may be persistent and caused by other maternal or fetal conditions, such as maternal hyperthyroidism, intrauterine infections, fetal anemia and fetal hypoxia (lack of oxygen) Sinus tachycardia (ST) – In this condition, the fetal heart rate is above 180 bpm but usually less than 200 bpm, with normal conduction (the electrical signal transmits normally from the upper chambers to the lower chambers). There are several types of tachyarrhythmia ranging from mild to serious, including:
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