Blood loss quantification during major abdominal surgery: prospective observational cohort study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00179906%3A_____%2F24%3A10478544" target="_blank" >RIV/00179906:_____/24:10478544 - isvavai.cz</a>

Alternative codes found

RIV/60162694:G44__/25:00561893

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bbcrpRHW1_" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=bbcrpRHW1_</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s12893-023-02288-w" target="_blank" >10.1186/s12893-023-02288-w</a>

Result language

angličtina

Original language name

Blood loss quantification during major abdominal surgery: prospective observational cohort study

Original language description

BackgroundBlood loss during major abdominal surgery is an essential parameter in the evaluation of strategies aimed at reducing perioperative bleeding. However, blood loss quantification remains unreliable and inaccurate. The aim of this study was to compare several methods of blood loss quantification-visual estimation by surgeon and anesthesiologist, the gravimetric method, the calculation method with spectrophotometric measurement. The spectrophotometric measurement is considered as the most accurate method.MethodsThe study was designed as a prospective observational cohort single-center study. We analyzed 61 patients who underwent elective liver or pancreatic resection. The anesthesiologists&apos; and surgeons&apos; estimate of blood loss was based on a visual assessment. The gravimetric method was based on weighing the suction canister and surgical drapes before and after use. The basis of calculation method was anthropometric and hematological parameters, we used Lopez-Picado&apos;s formula. The spectrophotometric method was based on the spectrophotometric determination of hemoglobin mass in the lost blood. We compared the methods using paired t-test, non-parametric Wilcoxon test and Bland-Altman analysis.ResultsVisual estimation by surgeons and anesthesiologists, gravimetric measurement, and calculation method were significantly different from spectrophotometric measurement at the significance level alpha = 0.05. All methods overestimated blood loss which was measured by spectrophotometric method. The estimate by surgeons was the closest to the spectrophotometric measurement, difference 68.7 ml (95% confidence interval [CI]: -129.3--8.2).ConclusionsWe conclude that the estimate of blood loss by surgeons and anesthesiologists, as well as gravimetric method and calculation method are all significantly inaccurate in real surgical setting. We did not confirm the commonly accepted assumption that surgeons underestimate the blood loss.Trial registrationThe study was registered under the title &quot; Blood Loss Quantification During Major Abdominal Surgery&quot; at ClinicalTrials.gov with the registration number NCT05316649. Date of the first registration was 20/3/2022.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30212 - Surgery

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

BMC Surgery

ISSN

1471-2482

e-ISSN

1471-2482

Volume of the periodical

24

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

5

UT code for WoS article

001138079000002

EID of the result in the Scopus database

2-s2.0-85181248259