Fig. 2

Heatmap of the main results from the standardised examination. Each column represents one horse and each row represents one parameter of the protocol. The clinical diagnoses are reflected in patterns in different sections of the heatmap. Prevalence of abnormal clinical findings and elevated scores are associated with disease severity. Similarly, percentage of neutrophils in BALF and AaDO₂ are higher in affected horses, while the opposite is true for lymphocytes. Detailed results from all examinations can be found as Additional Files 2–5. Parameters selected in the algorithmic re-evaluation of diagnoses (Fig. 5) are presented in italics (neutrophils, mast cells, cough score). (Abbr.: EA = equine asthma, miEA = mild EA, modEA = moderate EA, sEA = severe EA, BALF = bronchoalveolar lavage fluid, PaO₂ = arterial oxygen partial pressure, AaDO₂ = Alveolar-arterial oxygen gradient, PaCO₂ = arterial carbon dioxide partial pressure)