Why the study?
What change in visual analog scale (VAS) score represents a clinically meaningful change in dyspnea for patients presenting to the emergency department with heart failure?
What change in visual analog scale (VAS) score represents a clinically meaningful change in dyspnea for patients presenting to the emergency department with heart failure?
A change of approximately 21.1 mm on a visual analog scale represents a clinically meaningful change in dyspnea for heart failure patients in the emergency department.
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May inform dyspnea VAS interpretation in ED HF; hypothesis-generating and requires prospective validation before practice change.
Ander et al. (2004) studied this question.
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