Comparison of common perioperative blood loss estimation techniques: a systematic review and meta-analysis.
Blood loss estimation
Colorimetric blood loss estimation
Direct measurement
Gravimetric method
Patient blood management
Visual estimation
Journal
Journal of clinical monitoring and computing
ISSN: 1573-2614
Titre abrégé: J Clin Monit Comput
Pays: Netherlands
ID NLM: 9806357
Informations de publication
Date de publication:
Apr 2021
Apr 2021
Historique:
received:
17
05
2020
accepted:
11
08
2020
pubmed:
21
8
2020
medline:
29
10
2021
entrez:
21
8
2020
Statut:
ppublish
Résumé
Estimating intraoperative blood loss is one of the daily challenges for clinicians. Despite the knowledge of the inaccuracy of visual estimation by anaesthetists and surgeons, this is still the mainstay to estimate surgical blood loss. This review aims at highlighting the strengths and weaknesses of currently used measurement methods. A systematic review of studies on estimation of blood loss was carried out. Studies were included investigating the accuracy of techniques for quantifying blood loss in vivo and in vitro. We excluded nonhuman trials and studies using only monitoring parameters to estimate blood loss. A meta-analysis was performed to evaluate systematic measurement errors of the different methods. Only studies that were compared with a validated reference e.g. Haemoglobin extraction assay were included. 90 studies met the inclusion criteria for systematic review and were analyzed. Six studies were included in the meta-analysis, as only these were conducted with a validated reference. The mixed effect meta-analysis showed the highest correlation to the reference for colorimetric methods (0.93 95% CI 0.91-0.96), followed by gravimetric (0.77 95% CI 0.61-0.93) and finally visual methods (0.61 95% CI 0.40-0.82). The bias for estimated blood loss (ml) was lowest for colorimetric methods (57.59 95% CI 23.88-91.3) compared to the reference, followed by gravimetric (326.36 95% CI 201.65-450.86) and visual methods (456.51 95% CI 395.19-517.83). Of the many studies included, only a few were compared with a validated reference. The majority of the studies chose known imprecise procedures as the method of comparison. Colorimetric methods offer the highest degree of accuracy in blood loss estimation. Systems that use colorimetric techniques have a significant advantage in the real-time assessment of blood loss.
Identifiants
pubmed: 32815042
doi: 10.1007/s10877-020-00579-8
pii: 10.1007/s10877-020-00579-8
pmc: PMC7943515
doi:
Types de publication
Journal Article
Meta-Analysis
Review
Systematic Review
Langues
eng
Sous-ensembles de citation
IM
Pagination
245-258Références
Piekarski F, Wunderer F, Raimann FJ, Neef V, Peuckert M, Brenner T, Grottke O, Grünewald M, Gürtler K, Renner J, Thal S, Seyfried T, Zacharowski K, Meybohm P, Kollaborateure. Erfassung von intraoperativen Blutverlusten. Ergebnisse einer multizentrischen Erhebung und Überblick aktueller Methoden zur Quantifizierung von Blutverlusten. Anästh Intensivmed 2020;61:110–6. https://doi.org/10.19224/ai2020.110 .
Gabel KT, Weeber TA. Measuring and communicating blood loss during obstetric hemorrhage. J Obstet Gynecol Neonatal Nurs. 2012;41:551–8. https://doi.org/10.1111/j.1552-6909.2012.01375.x .
doi: 10.1111/j.1552-6909.2012.01375.x
pubmed: 22548283
Querschnitts-Leitlinien zur Therapie mit Blutkomponenten und Plasmaderivaten (2009) Mit 19 Tabellen, 4th edn. Dt. Ärzte-Verl., Köln
Müller MM, Meybohm P, Geisen C, Schmitz-Rixen T, Serve H, Seifried E, Zacharowski K. Patient blood management—Wie geht das praktisch?—Die interdisziplinäre Zusammenarbeit. Anasthesiol Intensivmed Notfallmed Schmerzther. 2014;49:266–72. https://doi.org/10.1055/s-0034-1373806 .
doi: 10.1055/s-0034-1373806
pubmed: 24792600
Mbachu II, Udigwe GO, Ezeama CO, Eleje GU, Eke AC. Effect of on-site training on the accuracy of blood loss estimation in a simulated obstetrics environment. Int J Gynaecol Obstet. 2017;137:345–9. https://doi.org/10.1002/ijgo.12133 .
doi: 10.1002/ijgo.12133
pubmed: 28236647
Buckland SS, Homer CSE. Estimating blood loss after birth: using simulated clinical examples. Women Birth. 2007;20:85–8. https://doi.org/10.1016/j.wombi.2007.01.001 .
doi: 10.1016/j.wombi.2007.01.001
pubmed: 17320496
Al-Kadri HM, Dahlawi H, Al Airan M, Elsherif E, Tawfeeq N, Mokhele Y, et al. Effect of education and clinical assessment on the accuracy of post partum blood loss estimation. BMC Pregnancy Childbirth. 2014;14:110. https://doi.org/10.1186/1471-2393-14-110 .
doi: 10.1186/1471-2393-14-110
pubmed: 24646156
pmcid: 3994970
Ram G-G, Suresh P, Vijayaraghavan P-V. Surgeons often underestimate the amount of blood loss in replacement surgeries. Chin J Traumatol. 2014;17:225–8.
pubmed: 25098850
Parayre I, Rivière O, Debost-Legrand A, Lémery D, Vendittelli F. Reliability of student midwives' visual estimate of blood loss in the immediate postpartum period: a cross-sectional study. Int J Nurs Stud. 2015;52:1798–803. https://doi.org/10.1016/j.ijnurstu.2015.06.015 .
doi: 10.1016/j.ijnurstu.2015.06.015
pubmed: 26233835
Golmakani N, Khaleghinezhad K, Dadgar S, Hashempor M, Baharian N. Comparing the estimation of postpartum hemorrhage using the weighting method and National Guideline with the postpartum hemorrhage estimation by midwives. Iran J Nurs Midwifery Res. 2015;20:471–5. https://doi.org/10.4103/1735-9066.161005 .
doi: 10.4103/1735-9066.161005
pubmed: 26257803
pmcid: 4525346
Larsson C, Saltvedt S, Wiklund I, Pahlen S, Andolf E. Estimation of blood loss after cesarean section and vaginal delivery has low validity with a tendency to exaggeration. Acta Obstet Gynecol Scand. 2006;85:1448–522. https://doi.org/10.1080/00016340600985032 .
doi: 10.1080/00016340600985032
pubmed: 17260220
Ladouceur MK, Goldbort J. A proactive approach to quantification of blood loss in the perinatal setting. Nurs Womens Health. 2019. https://doi.org/10.1016/j.nwh.2019.09.007 .
doi: 10.1016/j.nwh.2019.09.007
pubmed: 31682790
Hamm RF, Wang E, Romanos A, O'Rourke K, Srinivas SK. Implementation of quantification of blood loss does not improve prediction of hemoglobin drop in deliveries with average blood loss. Am J Perinatol. 2018;35:134–9. https://doi.org/10.1055/s-0037-1606275 .
doi: 10.1055/s-0037-1606275
pubmed: 28838005
Schorn MN. Measurement of blood loss: review of the literature. J Midwifery Womens Health. 2010;55:20–7. https://doi.org/10.1016/j.jmwh.2009.02.014 .
doi: 10.1016/j.jmwh.2009.02.014
pubmed: 20129226
Althoff FC, Neb H, Herrmann E, Trentino KM, Vernich L, Füllenbach C, et al. Multimodal patient blood management program based on a three-pillar strategy: a systematic review and meta-analysis. Ann Surg. 2019;269:794–804. https://doi.org/10.1097/SLA.0000000000003095 .
doi: 10.1097/SLA.0000000000003095
pubmed: 30418206
Hancock A, Weeks AD, Lavender DT. Is accurate and reliable blood loss estimation the ‘crucial step’ in early detection of postpartum haemorrhage: an integrative review of the literature. BMC Pregnancy Childbirth. 2015;15:230. https://doi.org/10.1186/s12884-015-0653-6 .
doi: 10.1186/s12884-015-0653-6
pubmed: 26415952
pmcid: 4587838
Keenan WN, Griffiths H, Clegg J. Evaluating blood loss in children's orthopaedic surgery: a simplified method of photometric analysis of eluted swabs. J Pediatr Orthop. 1998;18:488–91.
pubmed: 9661859
Viechtbauer W. Conducting meta-analyses in R with the metafor package. J Stat Softw. 2010. https://doi.org/10.18637/jss.v036.i03 .
doi: 10.18637/jss.v036.i03
Mannova JH, Silhart Z, Sevcik P, Prokes A. Perioperative haemodynamic monitoring by oesophageal Doppler improves outcome of patients with abdominal aortic aneurysm repair. Bratisl Lek Listy. 2013;114:78–83.
pubmed: 23331203
Oba T, Koyano M, Hasegawa J, Takita H, Arakaki T, Nakamura M, Sekizawa A. The inferior vena cava diameter is a useful ultrasound finding for predicting postpartum blood loss. J Matern Fetal Neonatal Med. 2019;32:3251–4. https://doi.org/10.1080/14767058.2018.1462321 .
doi: 10.1080/14767058.2018.1462321
pubmed: 29621917
Toledo P, McCarthy RJ, Burke CA, Goetz K, Wong CA, Grobman WA. The effect of live and web-based education on the accuracy of blood-loss estimation in simulated obstetric scenarios. Am J Obstet Gynecol. 2010;202(400):e1–5. https://doi.org/10.1016/j.ajog.2009.10.881 .
doi: 10.1016/j.ajog.2009.10.881
Thurer RL, Castro JM, Javidroozi M, Burton K, Bernal NP. Accurate measurement of intraoperative blood loss improves prediction of postoperative hemoglobin levelsAccurate measurement of intraoperative blood loss improves prediction of postoperative hemoglobin levels. J Anesth Clin Res. 2017. https://doi.org/10.4172/2155-6148.1000743 .
doi: 10.4172/2155-6148.1000743
Meunier A, Petersson A, Good L, Berlin G. Validation of a haemoglobin dilution method for estimation of blood loss. Vox Sang. 2008;95:120–4. https://doi.org/10.1111/j.1423-0410.2008.01071.x .
doi: 10.1111/j.1423-0410.2008.01071.x
pubmed: 18510580
Rubenstein AF, Zamudio S, Al-Khan A, Douglas C, Sledge S, Tully G, Thurer RL. Clinical experience with the implementation of accurate measurement of blood loss during cesarean delivery: influences on hemorrhage recognition and allogeneic transfusion. Am J Perinatol. 2018;35:655–9. https://doi.org/10.1055/s-0037-1613675 .
doi: 10.1055/s-0037-1613675
pubmed: 29207419
Strand RT, da Silva F, Bergström S. Use of cholera beds in the delivery room: a simple and appropriate method for direct measurement of postpartum bleeding. Trop Doct. 2003;33:215–6. https://doi.org/10.1177/004947550303300408 .
doi: 10.1177/004947550303300408
pubmed: 14620424
Konig G, Holmes AA, Garcia R, Mendoza JM, Javidroozi M, Satish S, Waters JH. In vitro evaluation of a novel system for monitoring surgical hemoglobin loss. Anesth Analg. 2014;119:595–600. https://doi.org/10.1213/ANE.0000000000000198 .
doi: 10.1213/ANE.0000000000000198
pubmed: 24806138
pmcid: 4139457
Sharareh B, Woolwine S, Satish S, Abraham P, Schwarzkopf R. Real time intraoperative monitoring of blood loss with a novel tablet application. Open Orthop J. 2015;9:422–6. https://doi.org/10.2174/1874325001509010422 .
doi: 10.2174/1874325001509010422
pubmed: 26401167
pmcid: 4578129
Konig G, Waters JH, Hsieh E, Philip B, Ting V, Abbi G, et al. In vitro evaluation of a novel image processing device to estimate surgical blood loss in suction canisters. Anesth Analg. 2018;126:621–8. https://doi.org/10.1213/ANE.0000000000002692 .
doi: 10.1213/ANE.0000000000002692
pubmed: 29239963
pmcid: 5884116
Lilley G, Burkett-St-Laurent D, Precious E, Bruynseels D, Kaye A, Sanders J, et al. Measurement of blood loss during postpartum haemorrhage. Int J Obstet Anesth. 2015;24:8–14. https://doi.org/10.1016/j.ijoa.2014.07.009 .
doi: 10.1016/j.ijoa.2014.07.009
pubmed: 25433576
Kollberg SE, Häggström A-CE, Lingehall HC, Olofsson B. Accuracy of visually estimated blood loss in surgical sponges by members of the surgical team. AANA J. 2019;87:277–84.
pubmed: 31587711
Anya SU, Onyekwulu FA, Onuora EC. Comparison of visual estimation of intra-operative blood loss with haemoglobin estimation in patients undergoing caesarean section. Niger Postgrad Med J. 2019;26:25–30. https://doi.org/10.4103/npmj.npmj_164_18 .
doi: 10.4103/npmj.npmj_164_18
pubmed: 30860196
Homcha BE, Mets EJ, Goldenberg MDF, Kong L, Vaida SJ. Development and assessment of pictorial guide for improved accuracy of visual blood loss estimation in cesarean delivery. Simul Healthc. 2017;12:314–8. https://doi.org/10.1097/SIH.0000000000000246 .
doi: 10.1097/SIH.0000000000000246
pubmed: 28697055
Kordi M, Fakari FR, Mazloum SR, Khadivzadeh T, Akhlaghi F, Tara M. Comparison of the effect of web-based, simulation-based, and conventional training on the accuracy of visual estimation of postpartum hemorrhage volume on midwifery students: a randomized clinical trial. J Educ Health Promot. 2016;5:22. https://doi.org/10.4103/2277-9531.184548 .
doi: 10.4103/2277-9531.184548
pubmed: 27500175
pmcid: 4960770
Adkins AR, Lee D, Woody DJ, White WA. Accuracy of blood loss estimations among anesthesia providers. AANA J. 2014;82:300–6.
pubmed: 25167610
Yoong W, Karavolos S, Damodaram M, Madgwick K, Milestone N, Al-Habib A, et al. Observer accuracy and reproducibility of visual estimation of blood loss in obstetrics: how accurate and consistent are health-care professionals? Arch Gynecol Obstet. 2010;281:207–13. https://doi.org/10.1007/s00404-009-1099-8 .
doi: 10.1007/s00404-009-1099-8
pubmed: 19434419
Dildy GA, Paine AR, George NC, Velasco C. Estimating blood loss: can teaching significantly improve visual estimation? Obstet Gynecol. 2004;104:601–6. https://doi.org/10.1097/01.AOG.0000137873.07820.34 .
doi: 10.1097/01.AOG.0000137873.07820.34
pubmed: 15339775
Meiser A, Casagranda O, Skipka G, Laubenthal H. Quantifizierung von Blutverlusten. Wie genau ist visuelles Schätzen und wovon hängt die Genauigkeit ab? Anaesthesist 2001;50:13–20. https://doi.org/10.1007/s001010050957
Khadilkar SS, Sood A, Ahire P. Quantification of peri-partum blood loss: training module and clot conversion factor. J Obstet Gynaecol India. 2016;66:307–14. https://doi.org/10.1007/s13224-016-0888-9 .
doi: 10.1007/s13224-016-0888-9
pubmed: 27651622
pmcid: 5016470
Fedoruk K, Seligman KM, Carvalho B, Butwick AJ. Assessing the association between blood loss and postoperative hemoglobin after cesarean delivery: a prospective study of 4 blood loss measurement modalities. Anesth Analg. 2019;128:926–32. https://doi.org/10.1213/ANE.0000000000003449 .
doi: 10.1213/ANE.0000000000003449
pubmed: 29847380
Rothermel LD, Lipman JM. Estimation of blood loss is inaccurate and unreliable. Surgery. 2016;160:946–53. https://doi.org/10.1016/j.surg.2016.06.006 .
doi: 10.1016/j.surg.2016.06.006
pubmed: 27544540
McConnell JS, Fox TJ, Josson JP, Subramanian A. “About a cupful”—a prospective study into accuracy of volume estimation by medical and nursing staff. Accid Emerg Nurs. 2007;15:101–5. https://doi.org/10.1016/j.aaen.2007.02.006 .
doi: 10.1016/j.aaen.2007.02.006
pubmed: 17451955
McCullough TC, Roth JV, Ginsberg PC, Harkaway RC. Estimated blood loss underestimates calculated blood loss during radical retropubic prostatectomy. Urol Int. 2004;72:13–6. https://doi.org/10.1159/000075266 .
doi: 10.1159/000075266
pubmed: 14730159
Bose P, Regan F, Paterson-Brown S. Improving the accuracy of estimated blood loss at obstetric haemorrhage using clinical reconstructions. BJOG. 2006;113:919–24. https://doi.org/10.1111/j.1471-0528.2006.01018.x .
doi: 10.1111/j.1471-0528.2006.01018.x
pubmed: 16907938
Withanathantrige M, Goonewardene M, Dandeniya R, Gunatilake P, Gamage S. Comparison of four methods of blood loss estimation after cesarean delivery. Int J Gynaecol Obstet. 2016;135:51–5. https://doi.org/10.1016/j.ijgo.2016.03.036 .
doi: 10.1016/j.ijgo.2016.03.036
pubmed: 27451396
Budair B, Ahmed U, Hodson J, David M, Ashraf M, McBride T. Are we all guilty of under-estimating intra-operative blood loss during hip fracture surgery? J Orthop. 2017;14:81–4. https://doi.org/10.1016/j.jor.2016.10.019 .
doi: 10.1016/j.jor.2016.10.019
pubmed: 27829730
Kavle JA, Khalfan SS, Stoltzfus RJ, Witter F, Tielsch JM, Caulfield LE. Measurement of blood loss at childbirth and postpartum. Int J Gynaecol Obstet. 2006;95:24–8. https://doi.org/10.1016/j.ijgo.2006.06.010 .
doi: 10.1016/j.ijgo.2006.06.010
pubmed: 16919628
Howe C, Paschall C, Panwalkar A, Beal J, Potti A. A model for clinical estimation of perioperative hemorrhage. Clin Appl Thromb Hemost. 2003;9:131–5. https://doi.org/10.1177/107602960300900207 .
doi: 10.1177/107602960300900207
pubmed: 12812382
Guinn NR, Broomer BW, White W, Richardson W, Hill SE. Comparison of visually estimated blood loss with direct hemoglobin measurement in multilevel spine surgery. Transfusion. 2013;53:2790–4. https://doi.org/10.1111/trf.12119 .
doi: 10.1111/trf.12119
pubmed: 23438094
Conner SN, Tuuli MG, Colvin R, Shanks AL, Macones GA, Cahill AG. ACCURACY of estimated blood loss in predicting need for transfusion after delivery. Am J Perinatol. 2015;32:1225–300. https://doi.org/10.1055/s-0035-1552940 .
doi: 10.1055/s-0035-1552940
pubmed: 26007310
pmcid: 4655180
Serapio ET, Pearlson GA, Drey EA, Kerns JL. Estimated versus measured blood loss during dilation and evacuation: an observational study. Contraception. 2018;97:451–5. https://doi.org/10.1016/j.contraception.2018.01.008 .
doi: 10.1016/j.contraception.2018.01.008
pubmed: 29410259
Pranal M, Guttmann A, Ouchchane L, Parayre I, Rivière O, Leroux S, et al. Do estimates of blood loss differ between student midwives and midwives? A multicenter cross-sectional study. Midwifery. 2018;59:17–22. https://doi.org/10.1016/j.midw.2017.12.017 .
doi: 10.1016/j.midw.2017.12.017
pubmed: 29348050
Lertbunnaphong T, Lapthanapat N, Leetheeragul J, Hakularb P, Ownon A. Postpartum blood loss: visual estimation versus objective quantification with a novel birthing drape. Singap Med J. 2016;57:325–8. https://doi.org/10.11622/smedj.2016107 .
doi: 10.11622/smedj.2016107
Stafford I, Dildy GA, Clark SL, Belfort MA. Visually estimated and calculated blood loss in vaginal and cesarean delivery. Am J Obstet Gynecol. 2008;199(519):e1–7. https://doi.org/10.1016/j.ajog.2008.04.049 .
doi: 10.1016/j.ajog.2008.04.049
Beer HL, Duvvi S, Webb CJ, Tandon S. Blood loss estimation in epistaxis scenarios. J Laryngol Otol. 2005;119:16–8. https://doi.org/10.1258/0022215053222752 .
doi: 10.1258/0022215053222752
pubmed: 15807956
Maslovitz S, Barkai G, Lessing JB, Ziv A, Many A. Improved accuracy of postpartum blood loss estimation as assessed by simulation. Acta Obstet Gynecol Scand. 2008;87:929–34. https://doi.org/10.1080/00016340802317794 .
doi: 10.1080/00016340802317794
pubmed: 18720041
Sukprasert M, Choktanasiri W, Ayudhya NIN, Promsonthi P, O-Prasertsawat P. Increase accuracy of visual estimation of blood loss from education programme. J Med Assoc Thai. 2006;89(Suppl 4):S54–S5959.
pubmed: 17726810
Toledo P, Eosakul ST, Goetz K, Wong CA, Grobman WA. Decay in blood loss estimation skills after web-based didactic training. Simul Healthc. 2012;7:18–211. https://doi.org/10.1097/SIH.0b013e318230604f .
doi: 10.1097/SIH.0b013e318230604f
pubmed: 22228284
Yeung CY, Yim WW, Chan SY, Lo RSL, Leung LY, Hung KKC, Graham CA. Improvement of blood loss volume estimation by paramedics using a pictorial nomogram: a developmental study. Injury. 2017;48:2693–8. https://doi.org/10.1016/j.injury.2017.10.045 .
doi: 10.1016/j.injury.2017.10.045
pubmed: 29108791
Wilcox L, Ramprasad C, Gutierrez A, Oden M, Richards-Kortum R, Sangi-Haghpeykar H, Gandhi M. Diagnosing postpartum hemorrhage: a new way to assess blood loss in a low-resource setting. Matern Child Health J. 2017;21:516–23. https://doi.org/10.1007/s10995-016-2135-5 .
doi: 10.1007/s10995-016-2135-5
pubmed: 27456310
Ali Algadiem E, Aleisa AA, Alsubaie HI, Buhlaiqah NR, Algadeeb JB, Alsneini HA. Blood loss estimation using gauze visual analogue. Trauma Mon. 2016;21:e34131. https://doi.org/10.5812/traumamon.34131 .
doi: 10.5812/traumamon.34131
pubmed: 27626017
pmcid: 5003499
Zuckerwise LC, Pettker CM, Illuzzi J, Raab CR, Lipkind HS. Use of a novel visual aid to improve estimation of obstetric blood loss. Obstet Gynecol. 2014;123:982–6. https://doi.org/10.1097/AOG.0000000000000233 .
doi: 10.1097/AOG.0000000000000233
pubmed: 24785850
Cheerranichanunth P, Poolnoi P. Using blood loss pictogram for visual blood loss estimation in cesarean section. J Med Assoc Thai. 2012;95:550–6.
pubmed: 22612010
Merlin MA, Alter SM, Raffel B, Pryor PW. External blood loss estimation using the MAR Method. Am J Emerg Med. 2009;27:1085–90. https://doi.org/10.1016/j.ajem.2008.07.039 .
doi: 10.1016/j.ajem.2008.07.039
pubmed: 19931755
Nelson NC, Ostby SA, Weaver AL, McGree ME, Gebhart JB, Bakkum-Gamez JN. Estimated blood loss during vaginal hysterectomy and adnexal surgery described with an intraoperative pictographic tool. Female Pelvic Med Reconstr Surg. 2018;24:347–51. https://doi.org/10.1097/SPV.0000000000000470 .
doi: 10.1097/SPV.0000000000000470
pubmed: 28922304
Brooks M, Legendre G, Brun S, Bouet P-E, Mendes LP, Merlot B, Sentilhes L. Use of a visual aid in addition to a collector bag to evaluate postpartum blood loss: a prospective simulation study. Sci Rep. 2017;7:46333. https://doi.org/10.1038/srep46333 .
doi: 10.1038/srep46333
pubmed: 28429722
pmcid: 5399603
Ambardekar S, Shochet T, Bracken H, Coyaji K, Winikoff B. Calibrated delivery drape versus indirect gravimetric technique for the measurement of blood loss after delivery: a randomized trial. BMC Pregnancy Childbirth. 2014;14:276. https://doi.org/10.1186/1471-2393-14-276 .
doi: 10.1186/1471-2393-14-276
pubmed: 25128176
pmcid: 4141098
Holmes AA, Konig G, Ting V, Philip B, Puzio T, Satish S, Waters JH. Clinical evaluation of a novel system for monitoring surgical hemoglobin loss. Anesth Analg. 2014;119:588–94. https://doi.org/10.1213/ANE.0000000000000181 .
doi: 10.1213/ANE.0000000000000181
pubmed: 24797122
pmcid: 4144356
Konig G, Waters JH, Javidroozi M, Philip B, Ting V, Abbi G, et al. Real-time evaluation of an image analysis system for monitoring surgical hemoglobin loss. J Clin Monit Comput. 2018;32:303–10. https://doi.org/10.1007/s10877-017-0016-0 .
doi: 10.1007/s10877-017-0016-0
pubmed: 28389913
Atukunda EC, Mugyenyi GR, Obua C, Atuhumuza EB, Musinguzi N, Tornes YF, et al. Measuring post-partum haemorrhage in low-resource settings: the diagnostic validity of weighed blood loss versus quantitative changes in hemoglobin. PLoS ONE. 2016;11:e0152408. https://doi.org/10.1371/journal.pone.0152408 .
doi: 10.1371/journal.pone.0152408
pubmed: 27050823
pmcid: 4822885
Doctorvaladan SV, Jelks AT, Hsieh EW, Thurer RL, Zakowski MI, Lagrew DC. Accuracy of blood loss measurement during cesarean delivery. AJP Rep. 2017;7:e93–e100. https://doi.org/10.1055/s-0037-1601382 .
doi: 10.1055/s-0037-1601382
pubmed: 28497007
pmcid: 5425292
Patel A, Goudar SS, Geller SE, Kodkany BS, Edlavitch SA, Wagh K, et al. Drape estimation vs. visual assessment for estimating postpartum hemorrhage. Int J Gynaecol Obstet. 2006;93:220–4. https://doi.org/10.1016/j.ijgo.2006.02.014 .
doi: 10.1016/j.ijgo.2006.02.014
pubmed: 16626718
Zhang W-H, Deneux-Tharaux C, Brocklehurst P, Juszczak E, Joslin M, Alexander S. Effect of a collector bag for measurement of postpartum blood loss after vaginal delivery: cluster randomised trial in 13 European countries. BMJ. 2010;340:c293. https://doi.org/10.1136/bmj.c293 .
doi: 10.1136/bmj.c293
pubmed: 20123835
pmcid: 2815270
Tixier H, Boucard C, Ferdynus C, Douvier S, Sagot P. Interest of using an underbuttocks drape with collection pouch for early diagnosis of postpartum hemorrhage. Arch Gynecol Obstet. 2011;283:25–9. https://doi.org/10.1007/s00404-009-1265-z .
doi: 10.1007/s00404-009-1265-z
pubmed: 19876638
Legendre G, Richard M, Brun S, Chancerel M, Matuszewski S, Sentilhes L. Evaluation by obstetric care providers of simulated postpartum blood loss using a collector bag: a French prospective study. J Matern Fetal Neonatal Med. 2016;29:3575–81. https://doi.org/10.3109/14767058.2016.1139569 .
doi: 10.3109/14767058.2016.1139569
pubmed: 26755071
Lopez-Picado A, Albinarrate A, Barrachina B. Determination of perioperative blood loss: accuracy or approximation? Anesth Analg. 2017;125:280–6. https://doi.org/10.1213/ANE.0000000000001992 .
doi: 10.1213/ANE.0000000000001992
pubmed: 28368940
Jaramillo S, Montane-Muntane M, Capitan D, Aguilar F, Vilaseca A, Blasi A, Navarro-Ripoll R. Agreement of surgical blood loss estimation methods. Transfusion. 2019;59:508–15. https://doi.org/10.1111/trf.15052 .
doi: 10.1111/trf.15052
pubmed: 30488961
Hurle R, Poma R, Maffezzini M, Manzetti A, Piccinelli A, Taverna G, et al. A simple mathematical approach to calculate blood loss in radical prostatectomy. Urol Int. 2004;72:135–9. https://doi.org/10.1159/000075967 .
doi: 10.1159/000075967
pubmed: 14963354
Božičković N, Popović J, Kolak R, Popović K, Popović D. Application of one-compartmental bio-metric blood loss calculations with transfused blood volume taken into account after aneurysmectomy. Eur J Drug Metab Pharmacokinet. 2011;36:103–8. https://doi.org/10.1007/s13318-011-0025-1 .
doi: 10.1007/s13318-011-0025-1
pubmed: 21327754
Milosevic N, Popovic J, Grujic Z, Rapaic M. One-compartmental biometric blood loss calculation after cesarean section. Eur J Drug Metab Pharmacokinet. 2011;36:183–8. https://doi.org/10.1007/s13318-011-0042-0 .
doi: 10.1007/s13318-011-0042-0
pubmed: 21553340
Stahl DL, Groeben H, Kroepfl D, Gautam S, Eikermann M. Development and validation of a novel tool to estimate peri-operative blood loss. Anaesthesia. 2012;67:479–86. https://doi.org/10.1111/j.1365-2044.2011.06916.x .
doi: 10.1111/j.1365-2044.2011.06916.x
pubmed: 22352443
Kahr MK, Brun R, Zimmermann R, Franke D, Haslinger C. Validation of a quantitative system for real-time measurement of postpartum blood loss. Arch Gynecol Obstet. 2018;298:1071–7. https://doi.org/10.1007/s00404-018-4896-0 .
doi: 10.1007/s00404-018-4896-0
pubmed: 30225686
Gao F-Q, Li Z-J, Zhang K, Sun W, Zhang H. Four methods for calculating blood-loss after total knee arthroplasty. Chin Med J. 2015;128:2856–60. https://doi.org/10.4103/0366-6999.168041 .
doi: 10.4103/0366-6999.168041
pubmed: 26521781
pmcid: 4756876
Saoud F, Stone A, Nutter A, Hankins GD, Saade GR, Saad AF. Validation of a new method to assess estimated blood loss in the obstetric population undergoing cesarean delivery. Am J Obstet Gynecol. 2019;221:267.e1–.e6. https://doi.org/10.1016/j.ajog.2019.06.022 .
doi: 10.1016/j.ajog.2019.06.022
Lyon M, Blaivas M, Brannam L. Sonographic measurement of the inferior vena cava as a marker of blood loss. Am J Emerg Med. 2005;23:45–50. https://doi.org/10.1016/j.ajem.2004.01.004 .
doi: 10.1016/j.ajem.2004.01.004
pubmed: 15672337
Resnick J, Cydulka R, Platz E, Jones R. Ultrasound does not detect early blood loss in healthy volunteers donating blood. J Emerg Med. 2011;41:270–5. https://doi.org/10.1016/j.jemermed.2010.11.040 .
doi: 10.1016/j.jemermed.2010.11.040
pubmed: 21421294
Imai K, Kotani T, Tsuda H, Nakano T, Hirakawa A, Kikkawa F. A novel approach to detecting postpartum hemorrhage using contrast-enhanced ultrasound. Ultrasound Med Biol. 2017;43:615–20. https://doi.org/10.1016/j.ultrasmedbio.2016.11.008 .
doi: 10.1016/j.ultrasmedbio.2016.11.008
pubmed: 28024660
Torella F, Cowley R, Thorniley MS, McCollum CN. Monitoring blood loss with near infrared spectroscopy. Comp Biochem Physiol Part A Mol Integr Physiol. 2002;132:199–203. https://doi.org/10.1016/s1095-6433(01)00548-7 .
doi: 10.1016/s1095-6433(01)00548-7
Oshima M, Shimada Y, Takeuchi H, Kinoshita K. Blood loss estimation during laparoscopic myomectomy using HemoCue. J Nippon Med Sch. 2005;72:226–9. https://doi.org/10.1272/jnms.72.226 .
doi: 10.1272/jnms.72.226
pubmed: 16113493
Kamal AM, Elramely MA, Abd Elhaq MM. The value of continuous noninvasive hemoglobin monitoring in intraoperative blood transfusion practice during abdominal cancer surgery. OJAnes. 2016;06:13–9. https://doi.org/10.4236/ojanes.2016.63003 .
doi: 10.4236/ojanes.2016.63003
Torella F, Cowley RD, Thorniley MS, McCollum CN. Regional tissue oxygenation during hemorrhage: can near infrared spectroscopy be used to monitor blood loss? Shock. 2002;18:440–4. https://doi.org/10.1097/00024382-200211000-00009 .
doi: 10.1097/00024382-200211000-00009
pubmed: 12412623
Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. PLoS Med. 2009;6(7):e1000097. https://doi.org/10.1371/journal.pmed1000097 .
doi: 10.1371/journal.pmed1000097