Heckerling Clinical Decision Rule for the Diagnosis of Pneumonia

Patients are stratified on the basis of clinical information into subgroups with differing probabilities of having pneumonia and the further need for chest x-ray is determined with greater accuracy.

Temperature >37.8 °C or 100 °F
+1
Heart rate > 100 beats per minute
+1
Crackles (rales)
+1
Decreased breath sounds
+1
Absence of asthma
+1
Derivation Reference:

Heckerling, P.S., Tape, T.G., Wigton, R.S., Hissong, K.K., Leikin, J.B., Ornato, J.P., Cameron, J.L., Racht, E.M. Clinical Prediction Rule for Pulmonary Infiltrates. Annals of Internal Medicine 113, no. 9 (November 1, 1990): 664. doi:10.7326/0003-4819-113-9-664.

Validation Reference:

Schierenberg, A., Minnaard, M.C., Hopstaken R.M., van de Pol, A.C., Broekhuizen, B.D.L., de Wit, N.J., Reitsma, J.B., et al. External Validation of Prediction Models for Pneumonia in Primary Care Patients with Lower Respiratory Tract Infection: An Individual Patient Data Meta-Analysis. PLOS ONE 11, no. 2 (February 26, 2016): e0149895. doi:10.1371/journal.pone.0149895