Which condition indicates an absolute contraindication to exercise in pregnant patients?

Severe preeclampsia is a condition that significantly impacts the health of both the mother and the fetus, making it an absolute contraindication to exercise during pregnancy. Preeclampsia is characterized by high blood pressure and often protein in the urine, and it can lead to serious complications if left unaddressed. In cases of severe preeclampsia, the risks associated with physical exertion can result in elevated blood pressure, increased risk of seizures (eclampsia), and potential placental abruption, all of which pose critical risks to both the mother and the developing fetus. Therefore, exercise is not recommended as it may exacerbate these complications.

In contrast, other conditions such as mild congenital heart disease, placenta previa after 28 weeks, and well-controlled asthma have been studied more thoroughly. While concerns exist regarding these conditions, they are not universally categorized as absolute contraindications to exercise in every case. For instance, some women with well-controlled asthma may engage in physical activity, and moderate exercise may be managed with appropriate medical oversight, unlike severe preeclampsia, where the risks outweigh the potential benefits of exercise.