 Preeclampsia toxemia PET is a pregnancy related complication that is usually expressed as new onset hypertension and proteinuria after 20 weeks of gestation. Although the exact pathophysiology is unclear, its related to abnormal placentation and subsequent vascular pathology. Endothelial dysfunction was found to play a significant role in the risk of cardiovascular event in general. Moreover, few studies found a relation between endothelial dysfunction and PET. There are several methods for the assessment of endothelial function, with Peripheral Artery Tone PAT plethysmography being an emerging non-invasive promising technique. However, scarce data exists regarding the effectiveness of PAT plethysmography use in women with PET and whether adverse results are found compared to healthy gravidas. 