The occurrence of arterial hypertension (AH) during pregnancy is a major cause of fetal, neonatal and maternal morbidity and mortality in western countries. It is estimated that about 10% of pregnancies are complicated by AH (80 000 women / year in France). It is therefore essential to diagnose AH with certainty in order to set-up appropriate care and follow its evolution.

The objective of this study is to show the faisability of self-measurement with teletransmission for long-term follow-up of hypertensive pregnant women (at high risk of preeclampsia) by avoiding repeated, prolonged visits or hospitalizations and to optimize the intervention of health professionals by providing them with reliable data.

A multicenter, controlled study will be conducted in women presenting with mild to moderate hypertension without preeclampsia followed throughout their pregnancy by either self-measurement with teletransmission.

Inclusion Criteria:

• Pregnant women with confirmed mild to moderate AH untreated and / or under antihypertensive treatment (for gestational or chronic hypertension)
• Women without preeclampsia requiring enhanced AH surveillance
• Patient affiliated to a social security system
• Patient giving consent to participate in the study.
• Age> 18 years

Exclusion Criteria:

• arm circumference greater than 42 cm unsuitable for self-measurement,
• women in atrial fibrillation, or frequently in arrhythmia, with secondary hypertension or severe hypertension or with cardiovascular complication.
• women having preeclampsia.
• women having an AH by "white coat effect".
• women having a move or maternity change planned during pregnancy.
• majors protected under tutorship or curatorship, or under the protection of justice.