Rossana

Hi Juan Carlos, extreme preemies have greater renal immaturity, they do not handle water well and many have polyuria. I have reviewed different guidelines and some of them recommend starting with volumes of 100 to 140 cc.k.day (CSPEN), 80 - 100 cc.k.day (ESPGHAN). Ideally the preterm should not lose more than 3% of its weight per day. We use relative humidity in the incubators up to 90%. We give sodium 2 to 4 meq.k.day in the first week, then we give 5 to 8 meq.k.day when the patient loses more weight than normal, it is evaluated if this due to poor caloric or hydric intake. If the problem is negative water balance, increase by 20cc.k.day the following day