Severe bronchoconstriction after bronchoalveolar lavage in a dog with eosinophilic airway disease.

: Bronchoalveolar lavage (BAL) is considered to be a safe procedure in humans and other animals. However, in some instances, potentially life-threatening complications can arise. In this clinical report, a dog with eosinophilic airway disease that underwent a BAL and subsequently became profoundly dyspneic during the recovery period is described. The dyspnea was severe enough to warrant mechanical ventilation for almost 24 hours. Several anti-inflammatory and bronchodilatory medications were also used. The dog was successfully weaned off the ventilator and made a full recovery. On the basis of radiographic findings and clinical response to treatment, we believe the dog had acute exacerbation of eosinophilic airway disease and severe bronchoconstriction secondary to the BAL. Caution should be exercised when performing a BAL if there is suspicion of a reactive airway disease.