Zofran Heart Murmur May Be Side Effect of Atrial Septal Defect, Other Heart Defect

Harvey Kirk

By Harvey Kirk
Posted June 18, 2015


The lawyers at Saiontz & Kirk, P.A. represent families throughout the U.S. where children suffered severe birth defects following Zofran exposure during pregnancy, including cleft palate, cleft lip, atrial septal defects (ASD), ventricular septal defects (VSD) and other congenital heart defects.

In many cases, the first sign of problems may be a heart murmur from Zofran, which could be a symptom of a defect or malformation in the heart. To review a potential claim for your child, request a free consultation and claim evaluation.

Zofran Heart Murmur Side Effects

Heart murmurs can have a number of causes. They are most often associated with defective heart valves, particularly stenotic heart valve problems that may occur when the valve has an opening that is too small and cannot open adequately.

Zofran Heart Murmur Lawyers

Was Your Child Diagnosed with a Heart Murmur Following Zofran Use During Pregnancy?


There are also diastolic murmurs, which occur when because of heart muscles relaxing at the wrong time, and systolic heart murmurs, which occurs when the heart muscle suddenly contracts.

In addition, children often have what are called “innocent” heart murmurs, which disappear when a child reaches adulthood and are not a sign of a heart problem.

However, in cases of Zofran heart murmurs, these may be caused by a birth defect involving a hole in the wall between the two chambers of the heart, known as an atrial septal defect.

This may allow oxygenated blood to leak into the side of the heart where the blood has not yet been oxygenated. This hole is there at birth, but is supposed to close within several weeks or months. However, in children with atrial septal defects from Zofran exposure during pregnancy, the hole does not close in a timely fashion.

The extra blood causes the heart and lungs to struggle, and can cause them to become damaged over time. In extreme cases, heart surgery may be required.

Zofran Lawsuits for Heart Murmurs, Other Heart Defects

According to allegations raised in a growing number of Zofran heart murmur lawsuits being filed on behalf of families throughout the U.S., GlaxoSmithKline has placed their desire for profits before the safety of children by failing to adequately warn women and the medical community about the potential risks associated with using this anti-nausea drug during pregnancy. As a result, families may be entitled to Zofran settlements.

Zofran (ondansetron) was introduced by GlaxoSmithKline in 1991, and the medication is only approved for treatment of nausea and vomiting symptoms among chemotherapy patients and following surgery. However, it has been widely used “off-label” as a morning sickness drug due to illegal marketing by the drug manufacturer that has resulted in the false assumption within the medical community that it is safe.

Nausea and vomiting during the first trimester of pregnancy is one of the most common symptoms experienced by pregnant women. In rare cases, extreme morning sickness can result in hyperemesis gravidarum, which may result in hospitalization, dehydration, malnutrition, fluid or electrolyte imbalances, and other complications.

Despite questions about Zofran pregnancy risks, lawsuits allege that GlaxoSmithKline actively promoted such off-label use and withheld important warnings about the potential link between Zofran and birth defects.

The Zofran lawyers at Saiontz & Kirk, P.A. are reviewing individual cases for children diagnosed with heart murmurs, septal heart defects and other congenital birth defects, including cleft lip and cleft palate. Request a free consultation and claim evaluation to determine if your child may be entitled to financial compenation.


1 Comment • Add Your Comments

  • Tara says:

    My child has ASD surgery

    Posted on November 6, 2023 at 2:14 pm

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