Table 2.

Factors associated with peritoneal equilibration test (PET) ultrafiltration volumes^a

Factor	r Value	P Value
Sodium in ultrafiltrate	0.9972	<0.0001
D4-h/P sodium	−0.2575	0.0002
24-h peritoneal dialysis ultrafiltration	0.2399	0.0005
D4/D0 glucose	0.2313	0.0008
Serum albumin	−0.2128	0.0020
D4/P creatinine	−0.1966	0.0043
D2/P sodium	−0.1608	0.0206
Serum sodium	−0.1513	0.0292

^aDialysate (D) and plasma (P) values. Extracellular water (ECW) and total body water (TBW) were corrected to 1.73 m². The sodium in the ultrafiltrate was the difference between the sodium instilled and that recovered at the end of the PET.

D4-h/P sodium, 4-h PET dialysate to plasma sodium ratio; D4/P creatinine, 4-h PET dialysate to plasma creatinine; D4/D0 glucose, 4-h PET dialysate glucose to initial dialysate.