Survival in critically ill children receiving CVVH in this large series was higher than in previous reports. CVVH survival may be associated with less %FO in patients with > or =3-organ MODS. Prospective studies are necessary to determine whether earlier use of CVVH to control fluid overload in critically ill children can improve survival.
Although in situ end-systolic pressure-volume relations (ESPVRs) are approximately linear throughout a limited load range, they often yield seemingly "1negative" volume axis intercepts (V0) and V0 shifts with inotropic interventions. We tested whether or not these findings could stem from in situ ESPVR nonlinearity, and we examined the physiologic meaning and the slope of the dP/dtmax and end-diastolic volume relation, and the slope of the stroke work and end-diastolic volume relation. ESPVR was frequently curvilinear, and a significant correlation existed between the extent of nonlinearity (a) and contractile state. Volume intercepts derived from linear fits to the high load ESPVR range were mostly negative and were dependent on changes in Ees. V0 estimates derived from the low load portion were positive and relatively insensitive to Ees. Thus, in situ ESPVR displays contractility-dependent curvilinearity. The
Enteral nutrition in patients receiving either venoarterial or venovenous ECMO is well tolerated, provides adequate nutrition, is cost effective, and is without complications, as compared with parenteral nutrition. These data suggest that total enteral nutrition can be safely administered for nutritional support in pediatric patients undergoing either venoarterial or venovenous ECMO.
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