生命体征正常不能降低急性肺栓塞的风险
Normalization of Vital signs Does Not Reduce Risk for Acute Pulmonary Embolism
Up to one third of patients whose abnormal triage vital signs reverted to normal values had PE.
In a prospective single-center study, researchers evaluated whether normalization of vital signs in patients who present with symptoms of pulmonary embolism (PE) reduces the probability of the disease. Patients at an urban academic emergency department (ED) in North Carolina were enrolled if they were older than 17 years and had at least one predefined sign or symptom and one risk factor for PE.
Of 192 patients, 35 (18%) were diagnosed with PE by computed tomography in the ED. In patients whose abnormal triage vital signs normalized at any time during their ED visit, incidence of PE was not lower than for patients whose vital signs did not normalize. The incidence of PE for patients with abnormal pulse rate, respiratory rate, shock index, or pulse oximetry at triage that subsequently normalized was 18%, 14%, 19%, and 33%, respectively.
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