The effect of diet education on the laboratory values and knowledge of hemodialysis patients with hyperphosphatemia.
OBJECTIVE
The purpose of this study was to evaluate the effectiveness of 20 to 30 minutes per month of additional diet education on monthly laboratory values (phosphorus, calcium, parathyroid hormone, and calcium/phosphorus product) and knowledge of dietary phosphorus management in hemodialysis patients with hyperphosphatemia.


METHODS
A quasi-experimental design.


METHODS
Three outpatient dialysis centers owned by the same corporation in 1 southern state.


METHODS
Based on a 3-month average serum phosphorus >6.0 mg/dL, 70 patients were selected for participation; 63 dialysis patients completed the study, 32 in the experimental group and 31 in the control group.


METHODS
All patients completed a before-and-after knowledge test and had monthly blood samples drawn. Each month, the same registered dietitian provided the routine laboratory results review with control group. The experimental group received the routine laboratory review plus 20 to 30 minutes of additional diet education specifically targeting phosphorus. Main outcome measures Before-and-after knowledge test results and baseline and final serum calcium, phosphorus, parathyroid hormone, and calcium/phosphorus product levels.


RESULTS
At baseline, there were no significant differences in any of the laboratory values, but the knowledge level of the experimental group was greater (P <.05) After 6 months, gains in knowledge were significantly higher in the intervention group, and the serum phosphorus and calcium/phosphorus product levels were significantly lower (P <.01) than in the control group.


CONCLUSIONS
Based on this research, those patients who received extra education monthly showed positive changes, which may be beneficial in reducing hyperphosphatemia.
Ford
Joellen Carroll
JC
Renal Dietitian, DCI Inc, Shreveport, LA, USA.
Pope
Janet F
JF
Hunt
Alice E
AE
Gerald
Bonnie
B
D000328:Adult; D000368:Aged; D002118:Calcium / Q000097:blood; D005260:Female; D006801:Humans; D019359:Knowledge; D008297:Male; D008875:Middle Aged; D052756:Nutritional Sciences / Q000193:education*; D010281:Parathyroid Hormone / Q000097:blood; D010349:Patient Compliance; D010353:Patient Education as Topic; D010710:Phosphates / Q000097:blood*; D010758:Phosphorus / Q000097:blood; D006435:Renal Dialysis; D011795:Surveys and Questionnaires
D010281:Parathyroid Hormone; D010710:Phosphates; D010758:Phosphorus; D002118:Calcium