Presented in part as a poster at the 15th International Veterinary Emergency and Critical Care Symposium, Chicago, 2009.
Indication, management, and outcome of brachycephalic dogs requiring mechanical ventilation
Article first published online: 17 MAY 2011
© Veterinary Emergency and Critical Care Society 2011
Journal of Veterinary Emergency and Critical Care
Volume 21, Issue 3, pages 226–235, June 2011
How to Cite
Hoareau, G. L., Mellema, M. S. and Silverstein, D. C. (2011), Indication, management, and outcome of brachycephalic dogs requiring mechanical ventilation. Journal of Veterinary Emergency and Critical Care, 21: 226–235. doi: 10.1111/j.1476-4431.2011.00635.x
The authors declare no conflict of interest.
- Issue published online: 1 JUN 2011
- Article first published online: 17 MAY 2011
- Submitted December 31, 2009; Accepted March 17, 2011.
- positive pressure ventilation;
- temporary tracheostomy
Objectives – To evaluate the frequency, and need for mechanical ventilation (MV) in a population of brachycephalic dogs (BD) compared with non-BD. Also, to describe the pre-MV abnormalities, ventilator settings used, the cardiovascular and pulmonary monitoring results and complications encountered in the same BD population. In addition, we sought to identify factors associated with successful weaning and describe outcomes of BD requiring MV.
Design – Retrospective observational study (1990–2008).
Setting – University Small Animal Teaching Hospital.
Animals – Fifteen BD managed with MV.
Interventions – None.
Measurements and Main Results – Signalment, indication for MV, ventilator settings, arterial blood gas values, duration of MV, complications, and outcome were recorded for each patient enrolled in study. BD were more likely to receive MV than non-BD (P=0.036). Out of the 15 dogs that fulfilled the inclusion criteria 7 (47%) underwent MV for impending respiratory fatigue, 6 (40%) for hypoxemia and 2 for hypercapnea. The most common underlying disease was aspiration pneumonia. Duration of MV ranged from 2 to 240 hours (median 15 hours). Seven patients were weaned (47%). Seven dogs had a temporary tracheostomy tube and 5 of them (71%) were weaned. Dogs that were weaned had a significantly greater preweaning trial PaO2/FiO2 ratio than those that were not (359 ± 92 versus 210 ± 57 mm Hg, P=0.025). No significant difference for weaning success between dogs with and those without a tracheostomy was detected (P=0.132). The discharge rate was 27% (all from the respiratory fatigue group).
Conclusion – Among all dogs admitted to ICU, BD were more likely to receive MV than non-BD. Aspiration pneumonia was frequently identified as the underlying cause of respiratory compromise. The survival rate for BD undergoing MV was not markedly different from previous studies. Weaning of BD from MV may be facilitated by employing preemptive strategies such as performing tracheostomy tube placements.