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Pulmonary response of severely asthmatic horses after intra‐articular administration of methylprednisolone
Author(s) -
MillaresRamirez Esther M.,
Picotte Khristine,
Lavoie JeanPierre
Publication year - 2021
Publication title -
equine veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 87
eISSN - 2042-3306
pISSN - 0425-1644
DOI - 10.1111/evj.13272
Subject(s) - medicine , methylprednisolone , triamcinolone acetonide , asthma , methylprednisolone acetate , horse , pulmonary function testing , exacerbation , anesthesia , salbutamol , dexamethasone , airway resistance , corticosteroid , lung function , bronchoconstriction , lung , surgery , paleontology , biology
Background Intra‐articular (IA) administration of corticosteroids is performed routinely in equine practice. The lung function of severe asthmatic horses has recently been shown to be improved by IA triamcinolone acetonide (TA). We therefore hypothesised that IA methylprednisolone acetate (MPA), another commonly used corticosteroids, would also decrease the airway obstruction in severe asthmatic horses. Objectives To compare the effects of intra‐articular (IA) and intramuscular (IM) methylprednisolone acetate (MPA) administration on lung function and serum cortisol levels in horses with severe asthma. Study design Randomised and controlled experiments on severe asthmatic research animals. Methods Severe asthmatic horses in exacerbation were administered 200 mg of MPA either intramuscularly (n = 6) or via intra‐articular injections in the tarsocrural joints (n = 6; 100 mg/joint). Serum cortisol concentration and pulmonary function was measured for 8 days. Results A significant decrease in pulmonary resistance in the IA group ( P = .003, mean diff 1.14) on day 1 in comparison with baseline was observed. A significant decrease from baseline was also observed on serum cortisol values in the IA group 6 hours after injection ( P = .001, mean diff 44.5), and at day 1 ( P = .003, mean diff 45.1). Main limitations Joint health was not evaluated in the current study and the physiological response of the severe asthmatic horses might deviate from that of the milder forms of asthma. Conclusions MPA IA administration improves the lung function of severe asthmatic horses. However, this effect was mild and of a short duration.