240 likes | 261 Vues
Study comparing APD (Automated Peritoneal Dialysis) and CAPD (Continuous Ambulatory Peritoneal Dialysis) in renal medicine, showing similar patient survival and technique success rates in a 6,982 person-year follow-up of 4,128 ANZ PD patients.
E N D
Renal Medicine A Comparison of APD vs CAPD on Patient Outcomes Badve S, Hawley CM, Mudge DW, Rosman JB, Brown FG, Johnson DW David Johnson Princess Alexandra Hospital Brisbane, Australia
? CAPD APD
APD vs CAPD Use in Australia Number 43% 41% 39% 33% 27% 22% 14% 11% 7% 5%
Traditional APD Indications • Enhance small solute clearances • Enhance ultrafiltration (esp high transport) • Social reasons • Employment • School • Care of elderly/debilitated patients • Mechanical problems • Hernias, leaks, back pain, body image • Reduce peritonitis rates
N=139 Rabindranath NDT (In press)
Ultrafiltration: APD vs CAPD N=25 P=NS CAPD APD Bro et al Perit Dial Int 19:526-33,1999
QOL: APD vs CAPD Bro et al Perit Dial Int 19:526-33,1999
RRF Loss: APD vs CAPD * p<0.05 n=36 * * Hufnagel et al Nephrol Dial Transplant 14:1224-8, 1999
US Study Mujais and Story Kidney Int 70:S21-6, 2006
Aim • To compare patient survival and death-censored technique survival in patients treated with APD vs CAPD using ANZDATA
Methods • All ANZ patients starting PD between April 1, 1999 and March 31, 2004 • Complete follow-up • 1° outcomes death and death-censored technique failure • Survival time calculated from date of commencement of each PD episode to the date of death, transfer to hemodialysis, transplantation, loss of follow up, or March 31, 2004.
Statistics • Kaplan-Meier and multivariate Cox proportional hazards model analyses • PD modality included as a time-dependent covariate • Analyses stratified according to initial or subsequent episodes of PD • Used a conditional risk set model for multiple failure data • Standard errors calculated using robust variance estimation for the correlated data, clustered according to the centre of initial treatment
Patient Survival N=4128 AHR 1.03 (95% CI 0.86-1.24) p=0.72 Badve et al Kidney Int (In press)
Death-Censored Technique Survival N=4128 AHR 1.08 (95% CI 0.91-1.27) p=0.38 Badve et al Kidney Int (In press)
Death-Censored Technique Survival after 1st Failure Occurrence Badve et al Kidney Int (In press)
Propensity Score: Survival Model HR 95%CI P Unadjusted 0.92 0.77 – 1.09 0.336 Adjusted 1.03 0.86 – 1.24 0.723 Adjusted+PS 0.84 0.68 – 1.03 0.09 Badve et al Kidney Int (In press)
PS: Death-Censored Technique Survival Model HR 95%CI P Unadjusted 1.09 0.92 – 1.30 0.319 Adjusted 1.08 0.91 – 1.27 0.381 Adjusted+PS 1.07 0.91 – 1.27 0.381 Badve et al Kidney Int (In press)
Conclusions • APD results in similar patient survival and technique success rates compared to CAPD in 4,128 ANZ PD patients followed over 6,982 person-years • There is currently no strong clinical evidence, except for lifestyle considerations, for favouring APD over CAPD