I don't know where you are writing from but discharging below the admission criteria is not a reasonable thing to do as you will have to re-admit the case immediately since they are below the admission criteria. That could solve you problem ... discharge and readmit until the MUAC is > 115 mm. Two admissions should do it as weigh gain would be: 1.15^2 - 1 - 32.25% at discharge. So, maybe it is a rational thing to do. You really cannot discharge at MUAC = 88 mm. The problem with proportional weight gain is that the most waisted get the least treatment and the last waste get the most treatment. This has been well-documented by teams from MSF and elsewhere. Work is ongoing on using MUAC for discharge. Work by MSF and VALID International show that this addresses the "worst get the least" problem. Work in press by VALID shows that discharge at 125 is safe (i.e. associated with very low levels of relapse or death) and can be achieved with reasonable treatment periods. With MUAC = 88 mm we can expect long treatment times. BTW : Proportional weight gain was proposed by me about eight years ago. It is my mistake (and a big mistake too). I hope this helps.