The main question from this study (as with all studies) is 'so what?' What do these results mean? What do they mean for the individual patient, the population, for you what you're buying equipment, for researchers designing 'cardiac output studies', and for the clinician?
With all research (and audit) there's a temptation to collect data because you can, and to look for correlations and differences within all collected data. Do you think the researchers gathered the right data, and treated it appropriately? Was it important to gather the age and BMI of the patients for example? Is it appropriate to note that patients with an arterial line were more likely to be sick? (which is the dependant variable, the A-line or sickness?)
This type of study is relatively straightforward to do (as long as everyone co-operates!) - the journals are full of surveys of practice etc - maybe we should do there from time to time within the network? Do you have any ideas?
I look forward to reading what you think....