What Is the Tip of the Catheter?

In the absence of a thoroscopy it can be tricky to know quite where the tip of the catheter is at any given time. The pattern we should expect to see in terms of changing of the waveform should be first of all a CVP, then an RV, a right ventricle waveform, then a pulmonary artery waveform and finally a wedged waveform with wedged in one of the dust of the pulmonary branches. You'll probably need to go back and listen to that again, but I'd recommend going at the images. There's lots of measurements we can take from a pulmonary artery catheter, so directly measured pulmonary artery pressures are of course really useful.