METHOD FOR ESTIMATING BLOOD LOSS FROM FLUIDS COLLECTED DURING SURGERY

摘要

The invention relates to a method for estimating blood loss from a sample of fluid collected during surgery. The method includes utilizing spectrophotometric analysis to determine a hemoglobin proportion within the sample, and estimating a patient's total blood loss based upon the analysis and known proportions of hemoglobin mass to blood volume.

主权项

1. A method for calculating the estimated blood loss of a patient during a surgical procedure comprising:
(a) collecting expelled bodily fluid; (b) obtaining a sample of the fluid; (c) determining the volume of the sample; (d) determining the proportion and the mass of the amount of hemoglobin within the sample; (e) calculating the volume of blood in the sample; and (f) extrapolating the volume of blood in the sample to determine the amount of blood in the fluid using one of the following equations:14g*V(sample)*V(mixture)100ml*H(sample)=BV(mixture)wherein V(sample) is the volume of the sample, V(mixture) is the volume of the fluid, BV(mixture) is the volume of blood the fluid, and H(sample) is the mass of the hemoglobin; or:Y(volumecollected)×X(amountofhemoglobinperdeciliter)14gms/dclwherein Y is the volume of the sample, multiplied by X, which is the mass of hemoglobin, and divided by a known average of fourteen grams of hemoglobin per deciliter.