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Stroke chameleons

机译:中风变色龙

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Background Many conditions called "stroke mimics" may resemble acute stroke. The converse of the "stroke mimic" is a presentation suggestive of another condition, which actually represents stroke. These would be "stroke chameleons." The recognition of a chameleon as stroke has implications for therapy and quality of care. Methods We performed a retrospective chart review, including all cases for 1 year in which patients had a stroke missed on hospital presentation. Initial erroneous diagnoses were compared for all patients correctly admitted with those diagnoses to determine positive predictive value (PPV) for each chameleon. Results Ninety-four cases were identified as chameleons where brain imaging revealed acute stroke. The common chameleons were initially diagnosed as altered mental status (AMS) (29, 31%), syncope (15, 16%), hypertensive emergency (12, 13%), systemic infection (10, 11%), and suspected acute coronary syndrome (ACS) (9, 10%). The total number of patients who were diagnosed with these conditions over the same year were AMS (393), syncope (326), hypertensive emergency (144), systemic infection (753), and suspected ACS (817) (total N = 2528). For each chameleon diagnosis, the PPV of each presentation for acute stroke was AMS (7%), syncope (4%), hypertensive emergency (8%), systemic infection (1%), and suspected ACS (1%). Conclusions Stroke chameleons may result in patients not receiving appropriate care. The largest proportions of chameleons were AMS, syncope, hypertensive emergency, systemic infection, and suspected ACS. Patients diagnosed with hypertensive emergency or AMS had an 8% and 7% chance of having an acute stroke. Physicians should consider stroke in patients with these diagnoses with a lower threshold to obtain neuroimaging with subsequent appropriate management.
机译:背景许多称为“中风模拟物”的情况可能类似于急性中风。 “中风模仿物”的反义词暗示了另一种情况,实际上代表中风。这些就是“中风变色龙”。将变色龙识别为中风对治疗和护理质量有影响。方法我们进行了回顾性图表审查,包括1年内因住院就诊而中风失误的所有病例。将最初正确诊断的所有正确入院患者与这些诊断进行比较,以确定每个变色龙的阳性预测值(PPV)。结果94例变色龙被鉴定为变色龙,其脑部影像显示为急性中风。最初的常见变色龙被诊断为精神状态改变(AMS)(29,31%),晕厥(15,16%),高血压紧急情况(12,13%),全身感染(10,11%),和疑似急性冠状动脉综合征(ACS)(9,10%)。同年被诊断患有这些疾病的患者总数为AMS(393),晕厥(326),高血压急症(144),全身感染(753)和可疑ACS(817)(总N = 2528) 。对于每个变色龙诊断,每次急性卒中表现的PPV为AMS(7%),晕厥(4%),高血压急症(8%),全身感染(1%)和可疑ACS(1%)。结论中风变色龙可能导致患者得不到适当的护理。变色龙的最大比例是AMS,晕厥,高血压急症,全身感染和可疑ACS。被诊断患有高血压急症或AMS的患者发生中风的机率分别为8%和7%。对于具有这些诊断的患者,医师应考虑将其阈值降低,以进行神经影像学检查并进行适当的治疗。

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