11/7/2023 0 Comments Fast fetal heartbeatThe type of treatment selected depends on a number of factors including the type of the tachycardia, how many weeks pregnant you are, and if there are signs of hydrops. Occasionally, we may have to try more than one medication before we are able to reduce the baby’s tachycardia. We may need to take blood samples from you to check the levels of the medication in your body to make sure that they are within the correct range. However, we will monitor you and your baby’s heart rate regularly when you first start taking it. The aim of treatment is to control the rhythm of the baby’s heart, which in most cases allows a normal birth at term (after 37 weeks). Usually treatment is given as an outpatient and does not need a stay in hospital. Some medications can take two to three weeks before they are effective in reducing a baby’s heart rate. Some stickers will be applied to the chest to check your heart rhythm and that it is safe to give you the medication. We perform a simple test on the mother’s heart called an electrocardiogram (ECG) before prescribing the medication. In most cases we can reduce the fast heart rate by giving medication to the mother, which passes through the placenta to the baby. How does the fast heart rate affect my baby? Other rhythm disturbances may occur but are much rarer. In others, the atria beat exceedingly fast (over 300 beats per minute), much faster than the ventricles (atrial flutter). In some fetuses, the atria and ventricles are both beating fast but at the same rate (supraventricular tachycardia). It is the top two chambers of the heart (atria) that set the pace of the heart, and normally the ventricles only respond to electrical impulses from the atria. The ventricles are the pumping chambers of the heart. The heart is made up of four chambers – two at the top called atria and two at the bottom called ventricles. Typically, an abnormally fast heart rate is over 200 beats per minute. The normal fetal heart rate is between 120 and 160 beats per minute. It will support the information discussed with you by your doctor and nurse at your appointment and it is important to remember that every case is slightly different.Tachycardia is an abnormally fast heart rate. This information sheet from Great Ormond Street Hospital (GOSH) explains about fetal tachycardia detected during a prenatal ultrasound scan and what this might mean for your child. Prenatal ultrasound showing fetal tachycardia.Transition to adolescent and adult services
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