Gestational hypertensive disorders and retinal microvasculature: the Generation R Study

Area of Science:

• Ophthalmology
• Cardiovascular Medicine
• Reproductive Health

Background:

• Gestational hypertensive disorders, including pre-eclampsia and gestational hypertension, are suspected contributors to later cardiovascular disease.
• The maternal retinal microvasculature's status post-pregnancy in relation to these disorders requires further investigation.

Purpose of the Study:

• To investigate the association between a history of gestational hypertensive disorders and the maternal retinal microvasculature.
• To determine if pre-eclampsia or gestational hypertension impacts retinal vascular calibers years after pregnancy.

Main Methods:

• A prospective, population-based cohort study involving 3391 women.
• Retinal arteriolar and venular calibers were measured from digitized retinal photographs 6.2 years post-pregnancy.
• Data on pre-eclampsia, gestational hypertension, and retinal vascular calibers were analyzed.

Main Results:

• Women with pre-eclampsia exhibited smaller retinal arteriolar calibers post-pregnancy compared to normotensive pregnancies.
• Similar trends of smaller retinal arteriolar calibers were noted in women with previous gestational hypertension.
• Women with prior gestational hypertension showed larger retinal venular calibers, with the association mediated by mean arterial pressure.

Conclusions:

• Pre-eclampsia and gestational hypertension are associated with persistent alterations in the maternal retinal microvasculature up to six years postpartum.
• Observed changes include narrower retinal arterioles and wider venules, potentially indicating an increased risk for future cardiovascular disease.
• These findings highlight the retina as a potential indicator for long-term cardiovascular risk following hypertensive disorders of pregnancy.