A. Bornscheuer et al., CARDIOPULMONARY EFFECTS OF LYING POSITION IN ANESTHETIZED AND MECHANICALLY VENTILATED DOGS, Journal of experimental animal science, 38(1), 1996, pp. 20-27
Cardiopulmonary effects of right-lateral and supine (on back) lying po
sition were investigated in 8 anesthetized and mechanically ventilated
dogs. Complete hemodynamic and respiratory monitoring were obtained.
Heart rate was significantly higher, blood pressure, systemic vascular
resistance and left and right ventricular stroke work were significan
tly lower in supine in comparison to right-lateral position. Arterial
and mixed-venous oxygen tensions and mixed-venous oxygen saturation we
re significantly higher in right-lateral position. Compliance was sign
ificantly higher and peak ventilation pressure significantly lower in
supine position. Arterio-to-mixed-venous-oxygen content difference, ox
ygen consumption and utilization were significantly higher and respira
tory quotient was significantly lower in supine position in comparison
to right-lateral position. All other obtained parameters were not be
influenced by posture.