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A Pilot Study of OkKidney, a Phosphate Counting Application in Patients on Peritoneal Dialysis.
Perit Dial Int. 2017 Nov-Dec; 37(6):613-618.PD

Abstract

BACKGROUND

Hyperphosphatemia is associated with adverse outcomes in patients treated with peritoneal dialysis (PD). We have shown that a fixed meal phosphate binder dosing schedule is not appropriate. The purpose of this study was to evaluate the beta version of OkKidney, a phosphate counting app that matches meal phosphate content with binder dose.

METHODS

A convenience sample of adult patients treated with PD completed a pre-survey that included the technology readiness index (TRI 2.0). After a short information session, patients used OkKidney for 30 days. Pre- and post-intervention serum calcium, serum phosphate, and calcium carbonate binder intake were collected and compared using a paired t-test. A post-intervention survey using a 5-point Likert scale was used to gather patient feedback.

RESULTS

Ten patients (5M, 5F) completed the study protocol. Participants were 55 ± 17 years old, predominately Caucasian, retired (60%), and owned a smartphone (70%). The median TRI score was 3.66 (max 5), indicating a moderate level of readiness. The post-survey results indicated a favorable rating for ease of use (μ = 4.4 ± 0.84) and usefulness (μ = 4.3 ± 0.68) of OkKidney. The average serum phosphate (p = 0.99) and calcium (p = 0.68) were not different pre-/post-intervention, but calcium carbonate intake tended to decrease (p = 0.12).

CONCLUSION

Patients reported a positive experience with OkKidney. Further patient-specific adjustments of the binder dose to meal phosphate content may be required to demonstrate a statistically significant decrease in phosphate levels. We believe a larger trial is warranted to investigate the clinical implications of this app.

Authors+Show Affiliations

University of Ottawa, Ottawa, ON, Canada.mHealth Research Team, Ottawa Hospital Research Institute, Ottawa, ON, Canada. Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.mHealth Research Team, Ottawa Hospital Research Institute, Ottawa, ON, Canada.University of Ottawa, Ottawa, ON, Canada. mHealth Research Team, Ottawa Hospital Research Institute, Ottawa, ON, Canada. Department of Medicine, Ottawa Hospital, Ottawa, ON, Canada.Kidney Research Centre of the Ottawa Hospital Research Institute, Ottawa, ON, Canada.University of Ottawa, Ottawa, ON, Canada dzimmerman@toh.on.ca. Department of Medicine, Ottawa Hospital, Ottawa, ON, Canada. Kidney Research Centre of the Ottawa Hospital Research Institute, Ottawa, ON, Canada.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28970367

Citation

Imtiaz, Rameez, et al. "A Pilot Study of OkKidney, a Phosphate Counting Application in Patients On Peritoneal Dialysis." Peritoneal Dialysis International : Journal of the International Society for Peritoneal Dialysis, vol. 37, no. 6, 2017, pp. 613-618.
Imtiaz R, Atkinson K, Guerinet J, et al. A Pilot Study of OkKidney, a Phosphate Counting Application in Patients on Peritoneal Dialysis. Perit Dial Int. 2017;37(6):613-618.
Imtiaz, R., Atkinson, K., Guerinet, J., Wilson, K., Leidecker, J., & Zimmerman, D. (2017). A Pilot Study of OkKidney, a Phosphate Counting Application in Patients on Peritoneal Dialysis. Peritoneal Dialysis International : Journal of the International Society for Peritoneal Dialysis, 37(6), 613-618. https://doi.org/10.3747/pdi.2017.00050
Imtiaz R, et al. A Pilot Study of OkKidney, a Phosphate Counting Application in Patients On Peritoneal Dialysis. Perit Dial Int. 2017 Nov-Dec;37(6):613-618. PubMed PMID: 28970367.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A Pilot Study of OkKidney, a Phosphate Counting Application in Patients on Peritoneal Dialysis. AU - Imtiaz,Rameez, AU - Atkinson,Katherine, AU - Guerinet,Julien, AU - Wilson,Kumanan, AU - Leidecker,Julie, AU - Zimmerman,Deborah, Y1 - 2017/09/28/ PY - 2017/03/24/received PY - 2017/05/25/accepted PY - 2017/10/4/pubmed PY - 2018/7/22/medline PY - 2017/10/4/entrez KW - Peritoneal dialysis KW - application KW - phosphate SP - 613 EP - 618 JF - Peritoneal dialysis international : journal of the International Society for Peritoneal Dialysis JO - Perit Dial Int VL - 37 IS - 6 N2 - BACKGROUND: Hyperphosphatemia is associated with adverse outcomes in patients treated with peritoneal dialysis (PD). We have shown that a fixed meal phosphate binder dosing schedule is not appropriate. The purpose of this study was to evaluate the beta version of OkKidney, a phosphate counting app that matches meal phosphate content with binder dose. METHODS: A convenience sample of adult patients treated with PD completed a pre-survey that included the technology readiness index (TRI 2.0). After a short information session, patients used OkKidney for 30 days. Pre- and post-intervention serum calcium, serum phosphate, and calcium carbonate binder intake were collected and compared using a paired t-test. A post-intervention survey using a 5-point Likert scale was used to gather patient feedback. RESULTS: Ten patients (5M, 5F) completed the study protocol. Participants were 55 ± 17 years old, predominately Caucasian, retired (60%), and owned a smartphone (70%). The median TRI score was 3.66 (max 5), indicating a moderate level of readiness. The post-survey results indicated a favorable rating for ease of use (μ = 4.4 ± 0.84) and usefulness (μ = 4.3 ± 0.68) of OkKidney. The average serum phosphate (p = 0.99) and calcium (p = 0.68) were not different pre-/post-intervention, but calcium carbonate intake tended to decrease (p = 0.12). CONCLUSION: Patients reported a positive experience with OkKidney. Further patient-specific adjustments of the binder dose to meal phosphate content may be required to demonstrate a statistically significant decrease in phosphate levels. We believe a larger trial is warranted to investigate the clinical implications of this app. SN - 1718-4304 UR - https://www.unboundmedicine.com/medline/citation/28970367/A_Pilot_Study_of_OkKidney_a_Phosphate_Counting_Application_in_Patients_on_Peritoneal_Dialysis_ L2 - https://journals.sagepub.com/doi/10.3747/pdi.2017.00050?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -