1996 Hong Kong Renal Registry Report

Summary: This report was based on the data from the Renal Registry of the Hospital Authority of Hong Kong and accounted for approximately 90-95% of all the patients on Renal replacement therapy (RRT) in Hong Kong. Patients receiving treatment under the private sectors were not included in this report. the data were as of 31 December 1996. There were 15 renal units (2.4 unit per million population pmp]) and four major renal transplant centres. the number of patients on RRT was 3337 (530 pmp), of which 56% (299 pmp) were on peritoneal dialysis (PD), 15% (79 pmp) on haemodialysis (HD) and 29% (152 pmp) with functioning kidney transplants (TX). the net increase in the number of patients on RRT was +12% from the previous year. the incidence of end stage renal failure was 640 (102 pmp). the median age of patients on RRT was 49 years, of which 27% were above the age of 61 years. For new patients who commenced on RRT during 1996, the median age was 56 years, of which 36% were above the age of 61 years. the causes of renal failure were glomerulonephritis 37%, unknown 30%, diabetes 13%, inherited and congenital 5%, infection/reflux 3%, hypertensive/renal vascular disease 3%, urolithiasis 2%, obstructive 1% and others 5%. For new patients entered into the programme during 1996, 25% were due to diabetic nephropathy. Ten per cent of all the patients on RRT were serologically positive for hepatitis B infection (PD 12%, HD 6%, TX 9%). 5% of all the patients on RRT were positive for hepatitis C infection (PD 3%, HD 12%, TX 7%). Seventy-nine per cent of all the patients on dialysis were on PD (1885 patients, 299 pmp), of which 96% were on CAPD. Thirty-eight per cent of the patients on CAPD were on straight-line systems, 35% on disconnecting systems and 20% on UV flash systems. Four-hundred and ninety-five patients (79 pmp) were on HD, of which 59% were on hospital based HD, 15% on satellite centre based HD, 10% on charitable centre based HD and 5% on home HD. Nine-hundred and fifty-seven patients (152 pmp) had a functioning kidney graft. 542 (57%) were transplanted in Hong Kong, of which 50% were cadaveric kidney transplantations. During 1996, 121 patients (19 pmp) received a kidney transplantation. Eighty-four transplants were performed in Hong Kong, of which 58 were with cadaveric kidneys and 26 with living related kidneys. the annual mortality rate for all RRT was 7.3% (10% for PD, 8% for HD and 1% with TX). the major causes of death were infection (28%), cardiovascular (26%) and cerebral vascular accident (9%). Outcome indicators were on patients entered into the RRT programme during 1995, thus allowing for 1 year of follow up. For CAPD as the first RRT, 1 year patient and technique survival (censored for death and non-technique failure) were 94% and 93%. For living related kidney transplants performed in Hong Kong, 1 year patient and graft survival (censored for death) were both 100%. For cadaveric kidney transplants, 1 year patient and graft survival were 98% and 96%