Various pages have been updated to re-emphasise that heart rate is only > 100 bpm in about 40% of patients, so it is not a good screening variable. Increasing heart rate, however, is a good indicator of poorer prognosis.
Yamashita, Y., Morimoto, T., Takase, T., et al., (2023). Impact of Heart Rate at Diagnosis on Clinical Outcomes in Patients With Acute Pulmonary Embolism. American Journal of Cardiology, 187, 38-47. https://doi.org/10.1016/j.amjcard.2022.10.042