Sometimes the simple things are just as important as the difficult ones! Putting an animal into sternal recumbency is one of the most effective ways of improving their gas exchange. Sometimes the improvement in arterial oxygen concentration when the animal is moved into sternal recumbency can be life saving. I’ve seen a PaO2 of 40mmHg on oxygen (ie imminently life threatening) go up to 70 (safe) with nothing other than sticking the dog in sternal recumbency.