Water CCHT questions with correct answers rated A+ 2023

Water CCHT questions with correct answers rated A+ 2023What are the two main reason for treating the water used for hemodialysis? - correct answer preventing harm to the patient and preventing damage to the RO system List the contaminants in the water that are living creatures? - correct answer Bacteria and viruses What are the usual way that water becomes contaminated? - correct answer The process of acid rain, surface water from lakes, ponds, rivers and reservoris. Define endotoxin - correct answer A part of the bacterial cell walls that can contaminate water used for dialysis What is the function of the water softener in a water treatment system? What principle is responsible for this? - correct answer To remove calcium and magnesium. the water softener works by ion exchanges According to AAMI standard, how often should bacteriological testing of water used for dialysis be done? - correct answer monthly Why is water considered safe for drinking not necessarily safe for hemodialysis? - correct answer Patient are exposed to very large volumes of water during dialysis. What contaminants are removed by the carbon tants? - correct answer Chlorine, chloramines, pesticide, industrial solvents, and some trace organic substances.- The carbon tanks work on the principle of adsorption( attracts and holds low molecular weight particles from the water, much like a magnet attracts and holds iron filings) Exposure to chloramines during hemodialysis may cause? - correct answer Hemolysis List some examples of the water contaminants? - correct answer Minerals, sodium, chlorine, nitrate salts, pesticides, impurities from industry, fertilizers, herbicides, fluoride, chloramines( chlorine and ammonia), trace metals and, Microorganisms. What sign/symptom most commonly occur from bacteria/endotoxin exposure? - correct answer Fever and chills Describe the Reverse Osmosis system - correct answer a membrane separation process for removing solutes from a solution. Feed water is pumped under pressure through the semipermeable membrane which removes most contaminants from the water. the RO membrane can reject 95 to 99% of many substances including bacteria viruses, endotoxin, salts, metals and chemicals What are water quality checks done on the water treatment system? - correct answer At the start of the day, before every shift of patient or every 4 hours ( if you do not have set shift) According to AAMI standards bacteria in dialysis water must not exceed what level? - correct answer 200 CFU/ml What is the action level for bacteria? - correct answer 50 CFU/ml According to AAMI standards endotoxin on dialysis water must not exceed what level? - correct answer 2 EU/ml What is the action level for endotoxin? - correct answer 1 EU/ml How often should the RO operating parameters be checked? - correct answer daily What is the most common way that water treatment systems are disinfected? - correct answer Chemical disinfection What substance is added to municipal drinking water supplies in some localities to make the water clearer? - correct answer Alum