Snapshot A 25-year-old primigravida is pregnant with twins at 11 weeks of gestation. She is experiencing daily nausea and vomiting of moderate intensity that is worse in the morning. She has tried nonpharmacologic therapies with limited success. She has also tried drinking and eating small amounts at a time, and staying away from odors that make her feel nauseous. Labs reveal a hypochloremic metabolic alkalosis. Introduction Overview login to view 3 more bullets Epidemiology Incidence login to view 1 more bullet Demographics login to view 3 more bullets Risk factors login to view 9 more bullets ETIOLOGY Pathogenesis login to view 4 more bullets Presentation Symptoms login to view 6 more bullets Physical exam login to view 8 more bullets Studies Comprehensive metabolic panel login to view 7 more bullets Ketones login to view 2 more bullets Urine specific gravity login to view 1 more bullet Hemoglobin/hematocrit login to view 1 more bullet Differential Hydatidiform molar pregnancy login to view 3 more bullets Preeclampsia login to view 3 more bullets HELLP syndrome login to view 3 more bullets Treatment Behavioral login to view 7 more bullets Medical login to view 37 more bullets Complications Dehydration Prognosis no harm to fetus excellent prognosis if dehydration addressed