Anesthetic and Airways Management of a Dog with Severe Tracheal Collapse during Intraluminal Stent Placement

Table 1

Cardiovascular and respiratory variables recorded from an 11-years-old female Yorkshire Terrier during and after an endotracheal stent placement.

Variable	Reference range	Time point 1	Time point 2	Time point 3
Arterial blood pH	7.37–7.43	7.146	7.054	7.205
FiO2	0.21–1	0.21	ND	0.50
PaO2	95–108	83.6	240.3	120.4
SaO2	97–100	93.1	99.1	97.6
PaCO2	34–40	38	73.4	43.1
HR	70–110	118	120	ND
SAP	100–130	110	102	ND

FiO₂: inspired fraction of oxygen; PaO₂: arterial partial pressure of oxygen as measured by the blood gas analyzer (mmHg); SaO₂: arterial oxygen saturation as calculated by the blood gas analyzer (%); PaCO₂: arterial partial pressure of carbon dioxide as measured by the blood gas analyzer (mmHg); HR: heart rate (beats per minute); SAP: systolic arterial pressure as measured by Doppler (mmHg); ND: not determined; time point 1: during intratracheal stent placement, some minutes after oxygen supplementation was discontinued; time point 2: still during intratracheal stent placement, some minutes after oxygen supplementation was reestablished; time point 3: during recovery phase, with the animal being extubated and kept awake in the oxygen cage.