Rapid potassium repletion in a pericoding patient with severely low K of 1.5 due to mismanaged DKA at outside hospital. How fast would you replete it? What is the fastest you have ever repleted K?

[u/Little_Blackberry588]

I repleted 40 meq via central line in less than an hour, bringing it up to 1.9. The pharmacist is reporting me for dangerously fast repletion. What I can tell you is the patient was able to breath much better shortly after the potassium was given. Pretty sure the potassium was so low he was losing function of his diaphragm. Any thoughts from docs or crit care who have experience with a similar case?

[u/socal8888]

The alternative is asystole. Give it fast. As fast as you can If you need to, give it IVP

If the patient codes, they will be very hard to resuscitate since there is no gradient for electrical activity to happen.