Criteria for “high-risk pregnancy” in a woman with PV or ET
| High-risk pregnancy criteria for PV or ET . |
|---|
| Sustained rise in platelet count to >1500 × 109/L |
| Previous venous or arterial thrombosis |
| Previous hemorrhage attributed to the underlying PV or ET |
| Previous pregnancy complication, including any of the following: |
| • ≥1 unexplained deaths of a morphologically normal fetus ≥10 wk of gestation |
| • ≥1 premature delivery of a morphologically normal fetus <34 wk gestation because of: |
| (i) Severe preeclampsia or eclampsia defined according to standard definitions |
| (ii) Recognized features of placental insufficiency |
| • ≥3 consecutive otherwise unexplained miscarriages <10 wk gestation, |
| • Otherwise unexplained intrauterine growth restriction |
| • Significant antepartum or postpartum hemorrhage requiring transfusion |
| • Abnormal uterine artery Doppler at 20 wk (mean pulsatility index >1.4) |
| High-risk pregnancy criteria for PV or ET . |
|---|
| Sustained rise in platelet count to >1500 × 109/L |
| Previous venous or arterial thrombosis |
| Previous hemorrhage attributed to the underlying PV or ET |
| Previous pregnancy complication, including any of the following: |
| • ≥1 unexplained deaths of a morphologically normal fetus ≥10 wk of gestation |
| • ≥1 premature delivery of a morphologically normal fetus <34 wk gestation because of: |
| (i) Severe preeclampsia or eclampsia defined according to standard definitions |
| (ii) Recognized features of placental insufficiency |
| • ≥3 consecutive otherwise unexplained miscarriages <10 wk gestation, |
| • Otherwise unexplained intrauterine growth restriction |
| • Significant antepartum or postpartum hemorrhage requiring transfusion |
| • Abnormal uterine artery Doppler at 20 wk (mean pulsatility index >1.4) |