COMPARATIVE STUDY
JOURNAL ARTICLE

Clinical characterization and outcomes of preeclampsia with normal angiogenic profile

Sarosh Rana, William T Schnettler, Camille Powe, Julia Wenger, Saira Salahuddin, Ana Sofia Cerdeira, Stefan Verlohren, Frank H Perschel, Zoltan Arany, Kee-Hak Lim, Ravi Thadhani, S Ananth Karumanchi
Hypertension in Pregnancy 2013, 32 (2): 189-201
23725084

OBJECTIVE: To compare the clinical characteristics and outcomes of preeclamptic women presenting with a normal plasma angiogenic profile with those subjects who are characterized by an abnormal angiogenic profile.

METHODS: This was a secondary analysis of a prospective cohort study in women presenting to obstetrical triage at <37 weeks of gestation and diagnosed with preeclampsia within 2 weeks of enrollment and in whom angiogenic factors (sFlt1 and PlGF) measurements were available. Patients were divided into two groups based on their circulating levels of these factors described as a ratio; the sFlt1/PlGF ratio, non-angiogenic preeclampsia (sFlt1/PlGF ratio <85) and angiogenic preeclampsia (sFlt1/PlGF ratio ≥85). The data are presented by sFlt1/PlGF category using median and quartile 1-quartile 3 for continuous variables and by frequency and sample sizes for categorical variables.

RESULTS: In our cohort, the patients with non-angiogenic preeclampsia (N = 46) were more obese [BMI: 35.2 (31.6, 38.7) versus 31.1 (28.0, 39.0), p = 0.04], more likely to have preexisting diabetes (21.7% versus 2.0%, p = 0.002) and presented at a later gestational age [35 (32, 37) versus 32 (29, 34) weeks, p < 0.0001] as compared with women with angiogenic preeclampsia (N = 51). Women with non-angiogenic preeclampsia had no serious adverse outcomes (elevated liver function tests/low platelets: 0% versus 23.5%, abruption: 0% versus 9.8%, pulmonary edema: 0% versus 3.9%, eclampsia: 0% versus 2.0 %, small for gestational age: 0% versus 17.7% and fetal/neonatal death: 0% versus 5.9%) as compared with women with angiogenic preeclampsia. The rate of preterm delivery <34 weeks was 8.7% in non-angiogenic preeclampsia compared with 64.7% in angiogenic preeclampsia (p < 0.0001). Interestingly, delivery between 34 and 37 weeks and resource utilization (hospital admission days) were similar in the two groups.

CONCLUSION: In contrast to the angiogenic form, the non-angiogenic form of preeclampsia is characterized by little to no risk of preeclampsia-related adverse outcomes, other than iatrogenic prematurity. Incorporation of angiogenic biomarkers in the evaluation of preeclampsia may allow accurate and early identification of severe disease.

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