Dialysate bicarbonate practices Question Title * 1. What is your dialysis program (province, city, name of dialysis program/affiliated hospital and/or university)? St Joseph's Healthcare Hamilton Regional Program Kingston General Hospital Regional Program Grand River Hospital Regional Program Halton Healthcare Services Regional Program Humber River Regional Hospital Program Lakeridge Health Corporation Regional Program London Health Sciences Centre Regional Program Mackenzie Health Regional Program Michael Garron (Toronto East) Niagara Health Centre Regional Program North Bay Regional Health Centre Orillia Soldiers' Memorial Hospital Ottawa Hospital Regional Program Peterborough Regional Health Centre Renfrew Victoria Hospital Royal Victoria Hospital Sault Area Hospital Scarborough Hospital St Joseph's Health Centre, Toronto St Micheal's Hospital, Toronto Sunnybrook Health Sciences Centre, Toronto Thunder Bay Regional Health Sciences Centre Timmins and District Hospital Trillium Health Partners Regional Program University Health Network, Toronto William Osler Health Centre Windsor Regional Hospital Other (please specify) Question Title * 2. What hemodialysis machine does your program use (i.e., make/model) Fresenius 5008 Gambro Artis BBraun Dialog + Other (please specify) Question Title * 3. Is bicarbonate delivery performed at the level of the individual hemodialysis machine (vs. centralized delivery system)? Yes No Question Title * 4. What bicarbonate product does your program use? Liquid cartridges Bicart powder Other (please specify) Question Title * 5. Does your program adjust the dialysate bicarbonate concentration regularly (i.e., weekly or monthly) based on individual patient factors, such as pre-dialysis serum bicarbonate concentration? Yes No If yes, please specify what factors determine adjustment, i.e., pre-dialysis serum bicarbonate target. Question Title * 6. For chronic dialysis patients, does your program use a different dialysate bicarbonate concentration in the inpatient/acute setting compared to the outpatient setting? Always Frequently Occasionally Rarely Never Please specify when you would adjust the dialysate bicarbonate concentration in the inpatient setting. Question Title * 7. Does your program prescribe the same dialysate bicarbonate concentration for >90% of patients? Yes No Unsure Question Title * 8. What is the dialysate bicarbonate concentration prescribed for most patients in your program? <30 mmol/L 30-32 mmol/L 33 mmol/L 34 mmol/L 35 mmol/L 36 mmol/L 37 mmol/L 38 mmol/L >38 mmol/L The concentrations are individualized. There is no single or default concentration prescribed for most patients. Question Title * 9. For the purposes of a trial examining the impact of different dialysate bicarbonate concentrations on patient outcomes, what is the lowest concentration you would be willing to randomize patients to? Question Title * 10. For the purposes of a trial examining the impact of different dialysate bicarbonate concentrations on patient outcomes, what is the highest concentration you would be willing to randomize patients to? Question Title * 11. Does your program prescribe oral sodium bicarbonate to chronic hemodialysis patients? Never Rarely, under specific circumstances Sometimes Often Question Title * 12. Would your dialysis program be willing to participate in a national, cluster randomized pragmatic trial that compares two different standard dialysate bicarbonate concentrations to one another? Yes No Unsure If no or unsure, please state why below. Done