In this paper, we describe our approach to Semeval 2015 task 10 subtask B, message level sentiment detection. Our system implements a variety of classifiers and data preparation techniques from previous work. The set of features and classifiers used in the final system produced consistently strong results using crossvalidation on the provided training data. Our final system achieved an F-score of 57.60 on the provided test data. The overall best performing system had an F-score of 64.84.
Reversible cerebral vasoconstriction syndrome (RCVS) is a rare phenomenon that can present in the postpartum period. We show the experience of a 35‐year‐old patient who presented with headache after an uncomplicated pregnancy and vaginal delivery. She was initially diagnosed with pre‐eclampsia, and subsequently with RCVS following discovery of multifocal vascular narrowing on magnetic resonance arteriography (MRA). Verapamil was initiated, and at 1 month there was improvement intracranially, but cervical vertebral arterial narrowing, likely dissection, was discovered. Verapamil was continued and aspirin was initiated. Follow‐up imaging 5 months postpartum demonstrated near‐complete resolution of previously noted abnormalities, which remained stable at reimaging at 10 months postpartum. In conclusion, the symptoms of RCVS can mimic or coexist with pre‐eclampsia. Early intracranial imaging such as MRA can permit timely diagnosis and facilitate appropriate management and follow‐up.
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