Q: In patients presenting with the c/o dyspnea, what are the most useful symptoms that make the diagnosis of heart failure less likely (LR < 1)?

Wang CS, Fitzgerald JM, Schulzer M, et al. Does this dyspneic patient in the emergency department have congestive heart failure? JAMA. Oct 2005;294(15):1944-1956. (LLSA 2007)


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