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  • Title: A simple photometric method for determination of blood loss during transurethral surgery.
    Author: Jansen H, Berseus O, Johansson JE.
    Journal: Scand J Urol Nephrol; 1978; 12(1):1-5. PubMed ID: 76337.
    Abstract:
    A new method for determining blood loss during transurethral operations is presented. Its basic principle is photometry of blood concentrations in haemolysed irrigating fluid. At test study was run on 50 patients who underwent transurethral prostatic resection because of hyperplasia. The photometer was of a type commonly used for routine determination of a haemoglobin concentration in blood. The apparatus for the test is therefore readily available. The test is simple to perform and gives highly reliable results within a few minutes. In seven cases double sampling was done. Since the results within each pair of samples were practically identical, double sampling was considered superfluous for the rest of the case series. Visual estimation of blood loss during transurethral operations seems to be customary in most urologic units in Sweden. We found this method to be unreliable, with underestimates of about 100% in several cases.
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