Abstract
Nausea and vomiting are common symptoms in pregnancy, ranging from occasional nausea to fulminant and intractable vomiting. Many underlying metabolic disorders can mimic this, primary adrenal insufficiency (PAI) being one of them. Here, we present a case of adrenal insufficiency early in pregnancy.
A 28 year old lady G1P0 at 8 weeks of gestations, with a past medical history of Grave’s Disease, presented to our hospital on 3 occasions over one week with severe intractable nausea and vomiting. On prior visits, she had received intravenous fluids and discharged home. Laboratory work-up was ordered on the third visit and she was found to have severe hyponatremia with level of 111mMol/L. TSH and FT4 levels were both within the reference range. AM cortisol level was low at 2.3mcg/dL. ACTH and renin were both significantly elevated confirming diagnosis of PAI. Intravenous hydrocortisone was commenced immediately with rapid resolution of her symptoms and correction of her hyponatremia. She was followed at the endocrinology clinic, with appropriate up-titration of glucocorticoid and mineralocorticoid doses throughout her pregnancy.
Diagnosis of PAI is usually established prior to pregnancy. Presentation during pregnancy is not common, but it should be considered as a differential diagnosis when symptoms are out of proportion to the gestational status. Normal pregnancy is accompanied by progressive increase in circulating CRH and ACTH, increasing the levels of free cortisol as early as 7 weeks of gestation, rising up to 20-fold by the end of pregnancy. These physiologic changes could explain early presentation of adrenal crisis given insufficient glucocorticoid production. A delay in diagnosis and treatment increases the risk of maternal and fetal morbidity and mortality significantly.
Management of PAI during pregnancy can be challenging as there are no established guidelines and they have mainly been based on observational studies (1). The appropriate selection and dose of the glucocorticoid is important for the treatment of PAI to minimize adverse effects on mother and baby (2). At the time of active labor and delivery, stress doses of glucocorticoids need to be administered to prevent adrenal crisis (3).
In conclusion, early diagnosis and appropriate management of PAI during pregnancy is necessary to sustain a healthy pregnancy.
Bibliography
1 Husebye ES, Allolio B, Arlt W, et al. Consensus statement on the diagnosis, treatment and follow-up of patients with primary adrenal insufficiency. J Intern Med 2014; 275: 104– 15.
2 Bandoli G, Palmsten K, Forbess C, et al. A review of systemic corticosteroid use in pregnancy and the risk of select pregnancy and birth outcomes. Rheum Dis Clin North Am. 2017; 43(3): 489–502
3 Chen K, Powrie R. Approach to the use of Glucocorticoids in Pregnancy for Nonobstetric Indications. de Swiet’s Medical Disorders in Obstetric Practice: Fifth Edition. 736-741.
SUN-164 Adrenal Crisis in Early Pregnancy
