Remarkable long-term prognosis and excellent growth in kidney-transplant children under cyclosporine monotherapy.
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Biomedical subjects
Publications and source records attributed to E Meusel.
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Fifty dog kidneys had hypothermic perfusion for 12 to 72 hours and then were transplanted. Prior to perfusion the kidneys were subjected to 15, 30, 45, and 60 minutes of warm ischemia. Fifteen minutes of warm ischemia was well tolerated (successful 72 hour preservation), but after 30 minutes successful preservation could be achieved for 24 hours only. Enzyme release and lactate formation were related to the prolongation of warm ischemia, and the highly significant concentration differences of these substances, between well functioning kidneys and those with small or no function, indicated the viability of the organ.
50 dog kidneys were mechanically perfused under hypothermia for between 12 and 72 h and then transplanted. Before perfusion the kidneys were subjected to 15,30,45 and 60 min of warm ischaemia: 15 min of warm ischaemia were well tolerated (successful 72-h preservation), but after 30 min preservation was successful for only 24 h. Enzyme release and lactate formation depended on the duration of warm ischaemia. Furthermore, these perfusate concentrations indicated the viability of the organ (highly significant differences between well functioning kidneys and those with little or no function.
A new preservation system is described. In this unit 17 dog kidneys were nonpulsatile perfused with hypothermic human albumin for 72 hrs and then transplanted. All kidneys started immediately to function and the PAH and inulin clearances attained normal values at least at the 7th postoperative day. The quality of the immediate function is referred to the applied perfusion pressure (20 mm Hg) and the applied temperature of the perfusion medium (7.5 degrees C). During preservation substrate utilization (oxygen, unesterified fatty acids) and the accumulation of toxic metabolic products (ammonia, uric acid) were controlled in the perfusate. Their importance concerning to the limitation of preservation time is discussed.
Thirty-six dog kidneys were perfused with different perfusion pressures (between 15 and 60 mm. Hg) for 72 hours and then transplanted. Hypothermic human albumin was the perfusion fluid. Enzyme release, kidney weight, and renal oxygen consumption were measured during perfusion. Kidneys perfused with a flow rate of 0.8 ml. per gram per minute (21 mm. Hg mean perfusion pressure) showed the smallest increase in kidney weight and the best function after transplantation. Renal vascular resistance was independent of the level of the perfusion pressure and renal oxygen consumption was independent of the applied flow rate. It is concluded that the perfusion pressure applied with hypothermic perfusion should be as low as possible because in this way kidney damage caused by perfusion can be avoided most easily.
36 dog kidneys were perfused with different perfusion pressures (between 15 and 60 mm Hg) for 72 hrs and then transplanted. Hypothermic human albumin was the perfusion fluid. Kidneys perfused with a flow rate of 0.8 ml/g/min (21 mm Hg mean perfusion pressure) showed the smallest increase in kidney weight and the best function after transplantation. Renal vascular resistance was independent of the level of the perfusion pressure and renal oxygen consumption was independent of the applied flow rate.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.