The following are risk factors for pre-eclampsia, except:
A. First pregnancyPre-eclampsia is hypertension in pregnancy associated with proteinuria. The blood pressure after 20 weeks is >140/90 mmHg, or a 30/15 mmHg increase from baseline, with 300 mg proteinuria in 24 hours. A new partner is one risk factor for the development of pre-eclampsia, which is believed to be secondary to the immunological basis of the illness. Other risk factors include idiopathic hypertension, obesity, chronic renal disease, and diabetes