The average patient Hct during shed blood collection

The average patient platelet count during shed blood collection

The average patient total protein concentration during shed blood collection

The average patient fibrinogen concentration during shed blood collection

Total volume in the reservoir before processing red cell mass

Surgical field irrigant volume

Heparinized saline volume

Total patient shed blood volume in reservoir [ = reservoir - irrigant - hep saline vol ]

RBCM in shed blood reservoir to be processed in bowl [= (Hct/100)*reservoir vol]

Patient plasma volume in the reservoir [= patient shed vol - RBCM]

ATS device bowl volume

Expected ATS bowl end-processing Hct

Number of bowls to be filled to process reservoir RBCM[= reservoir RBCM / (bowl vol * (bowl Hct/100))]

Total bowl volume transferred to anesthesiologist patient transfusion bag [= # of bowls * bowl vol]

The percent of platelets that are activated by the ATS process - if not wasted

If there are 1,000 mm3 in one cc of plasma, the total number of platelets wasted [= (pt shed vol * 1000 mm3/cc * plt cnt)/10^6) * (100 - % plt activation)]

The percent of the proteins that are removed by the ATS process

The total number of mg of fibrinogen that are discarded [= pt shed vol / 100 dl/l * fib conc * (% prot removal)]

The total number of gm of protein that are discarded other than the fibrinogen mg [= (pt shed vol / 100 dl/l * prot conc * % prot removal) - (fib mg/1000)]

The volume in a platelet pack to determine the cost of platelets

The concentration of platelets in the platelet pack

The total number of platelets in the platelet pack example [= (plt pack vol * 1000 mm3/cc * plt conc)/106 ]

The cost of the volume of platelets in the platelet pack

The volume in a unit of allogeniec FFP

The concentration of fibrinogen in the FFP unit

Total number of mg of fibrinogen in the FFP unit example [= (FFP vol / 100) * fib conc ]

The cost of the FFP unit

The volume of the protein concentrate

The concentration by volume of the protein concentrate

Total number of gm of protein in the protein concentrate [= (prot conc / 100) * prot vol]

Cost of the protein concentrate example

Number of platelet packs required to replace wasted platelets [= M wasted platelets / M of platelets in plt pack]

Cost to replace the total number of platelets expected to survive that were wasted during ATS [= # plt pack replacement * cost of plt pack]

Number of FFP units required to replace wasted fibrinogen [= mg wasted fibrinogen / mg in one FFP unit]

Cost to replace the total number of mg fibrinogen that are wasted during ATS [= # FFP unit replacement * cost of one FFP unit]

Number of protein vials required to replace wasted protein [= gm wasted protein / gm in one protein vial]

Cost to replace the total number of gm protein (minus fibrinogen) that are wasted during ATS [= # prot vials replacement * cost of one protein vial]

Total cost to replace fibrinogen, protein and platelets lost during ATS processing [= sum of plt pack cost + FFP unit cost + prot conc cost]

Cost of the Hemobag^® and hemoconcentrator

Total cost of recovered waste minus cost of Hemobag^® and hemoconcentrator [= cost of waste - cost of Hemobag^® and HC]