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In the last 21 years we’ve expanded critical care beds, taken on patients we previously turned down. Some survive, many do not. Are we more productive? Length of stay is often up (we go on for longer, less willing to pull out), costs are high. Productivity is hard to measure.
We’ve known for some time that critically ill patients with COVID are highly susceptible to developing secondary infections whilst in ICU – infections they didn’t have when they came in. Here’s a previous paper of ours on this
https://twitter.com/kallmemeg/status/1476932349694775303Omicron is clearly more infectious, and as a result cases are at a massive high, we’ve never seen so many cases. And because of the well attested testing problems, cases are considerably higher than daily reports suggest.
https://twitter.com/sranesthesiaicu/status/1476836327530418188This is consistent with previous studies of ARDS (most of which will have been caused by bacterial or viral pneumonia). Fibrosis tends to resolve in most patients, functional recovery often lags radiographic or spirometric measures of lung function.
This number of occupied beds represents a major strain on other services, it will limit the ability to undertake surgery, to provide routine care for other conditions. Even if no one dies of Omicron (sadly this will not be the case) it will have massive impact.
https://twitter.com/GoodwinMJ/status/1441514187495067650They do this by having ‘reserve capacity’, allow them to cope with short term demand fluctuations. If part of the organism is damaged or depleted it may function ok, until strain is placed on it. The smaller the reserve the less strain it can cope with.

https://twitter.com/youricm/status/1365711562204450821This apparent paradox illustrates some of the problems of inferring causative relationships from observational data. Firstly ‘non-obese’ includes patients who are low weight, and as a marker of poor nutrition and severe pre-existing illness, such patients tend to do badly