What factors increase the risk of developing hypertensive disorders in pregnancy?

The correct answer emphasizes the significant risk factors associated with the development of hypertensive disorders in pregnancy. Obesity is a well-documented risk factor, as increased body weight can lead to higher blood pressure due to greater vascular resistance and physiological demands on the cardiovascular system. Additionally, having a personal or family history of hypertension indicates a predisposition to elevated blood pressure, which can exacerbate during pregnancy due to hormonal changes and increased blood volume. Carrying multiples, such as twins or triplets, further elevates the risk due to the additional strain placed on the mother's body, leading to complications like preeclampsia.

In contrast, low BMI and a history of multiple pregnancies do not necessarily correlate with an increased risk of developing hypertensive disorders; they can actually be protective in some cases. A vegan diet and no family history of hypertension suggest a lower likelihood of hypertension, as a well-balanced diet can contribute to overall health and lower blood pressure. Previous pregnancies without complications typically indicate a lower risk for subsequent pregnancy complications, including hypertensive disorders, as medical history plays a crucial role in assessing the risk during new pregnancies.