Mori I, Maeda I, Morita T, et al. - In this secondary analysis of a multicenter prospective cohort study involving 2,298 patients, researchers examined the potential connection between heart rate and reversibility of the symptom, treatment response to palliative intervention, and survival in terminally ill cancer patients with dyspnea at rest. Data reported that 418 patients had dyspnea at rest. Dyspnea reversibility was significantly higher in patients with lower heart rate and in patients with higher heart rate, the refractoriness to palliative treatment tended to be higher. Findings suggested that heart rate can help clinicians to make clinical course predictions more accurate for the patient.