Open AccessIncidence and Relation to Parity of Pregnancy‐Induced Hypertension in Iceland
Author(s) -
Gunnlaugsson Sigurdur R.,
Geirsson Reynir Tómas,
Snaedal Gunnlaugur,
Hallgrimsson Jón Th.,
Gunnlaugsson Sigurdur
Publication year - 1989
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016348909013277
Subject(s) - medicine , eclampsia , incidence (geometry) , obstetrics , blood pressure , proteinuria , pregnancy , gestational hypertension , gestational age , preeclampsia , retrospective cohort study , parity (physics) , medical record , hypertension in pregnancy , gynecology , pediatrics , surgery , genetics , physics , particle physics , optics , biology , kidney
A retrospective study was made to determine the incidence of pregnancy‐induced hypertension (PIH, pre‐eclampsia) in Iceland. One‐fourth of all births in Iceland in 1985 were selected from the national birth registry files by random number allocation, a total of 904 women. Maternity records were found in 97.9% of the cases. The criteria used to define PIH were met in 17.4% of the women. There were 146 (16.5%) with mild PIH (blood pressure of ≥/ 140/90 mmHg with or without proteinuria after the 20th gestational week). Eight (0.9%) had severe PIH (blood pressure of ≥/160/110 mmHg with or without proteinuria after the 20th gestational week). Primigravid women formed one‐third of the group and of these 20.9% had PIH compared with 15.4% of the parous women. The incidence in parous women was higher than usually reported.