Your pregnancy has three parts or trimesters. We may need to reassess treatment if medication is not effective in reducing your babys heart rate. The 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 babys 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. The aim of treatment is to control the rhythm of the babys heart, which in most cases allows a normal birth at term. However, we will monitor you and your babys heart rate regularly when you first start taking it. 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 babys 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 mothers heart called an electrocardiogram 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. Recommended Reading: Is Tylenol Good For Chest Pain What Treatments Are Available You have to have medicine to induce or speed up labor.You havent had complications during labor.What Kind Of Monitoring Do I NeedĪuscultation is generally considered an acceptable form of monitoring if: Your healthcare provider may have other reasons to use fetal heart ratemonitoring. Pushing during the second stage of labor.Things that may affect the fetal heart rate during labor: This test combines a nonstress test with ultrasound. Contractions are started with medicine or other methods. This measures fetal heart rate along with uterine contractions. This measures the fetal heart rate as your baby moves. These are medicines are used to helpkeep labor from starting too early.įetal heart rate monitoring may be used in other tests, including: It is also high risk if your baby is not developing or growing asit should.įetal heart rate monitoring may be used to check how preterm labormedicines are affecting your baby. Your pregnancy is high risk if you have diabetes or high bloodpressure. Moore, in, 2005 Why Might I Need Fetal Heart Monitoringįetal heart rate monitoring is especially helpful if you have a high-riskpregnancy. This is supported by observational studies demonstrating lower stillbirths in pregnancies with reactive NSTs than in those with nonreactive NSTs in addition to a lower stillbirth rate when NSTs are increased from once to twice per week.160,161Īndrew D. Thus, in theory, instituting nonstress tests should identify fetuses at risk for adverse perinatal outcome. If this continues, there is ultimately myocardial depression that manifests as late decelerations. This supersedes vagal influence, leading to both fetal tachycardia and decreased variability. When a fetus is exposed to prolonged periods of uteroplacental insufficiency, a noradrenergic response through the fetal adrenals occurs. The vagus nerve also transmits impulses that result in FHR variability. This tonic influence results in decreased rates of firing, thereby controlling the FHR. READING AND INTERPRETING A FETAL HEART RATE MONITORįetal heart rate characteristics are normally controlled through parasympathetic innervation, in which the vagus nerve innervates both the sinoatrial and atrioventricular nodes.
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