A Novel Approach to Detecting Postpartum Hemorrhage Using Contrast-Enhanced Ultrasound

Imai, Kenji; Kotani, Tomomi; Tsuda, Hiroyuki; Nakano, Tomoko; Hirakawa, Akihiro; Kikkawa, Fumitaka

doi:10.1016/j.ultrasmedbio.2016.11.008

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…Other methods for the intraoperative recording of blood loss are rarely described and have not yet been sufficiently tested. Ultrasound of the inferior vena cava [20,84,85], contrast enhanced ultrasound (CEUS) [86], hemodynamic esophageal Doppler monitoring [19], near-infrared spectroscopy [87] or continuous non-invasive intraoperative Hb monitoring [23,88,89] for intraoperative detection of blood loss have been investigated. None of these methods represents a valid technique for blood loss detection.…”

Section: Miscellaneous Methodsmentioning

confidence: 99%

Comparison of common perioperative blood loss estimation techniques: a systematic review and meta-analysis

Gerdessen

Meybohm

Choorapoikayil

et al. 2020

J Clin Monit Comput

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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.

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Section: Miscellaneous Methodsmentioning

confidence: 99%

Comparison of common perioperative blood loss estimation techniques: a systematic review and meta-analysis

Gerdessen

Meybohm

Choorapoikayil

et al. 2020

J Clin Monit Comput

View full text Add to dashboard Cite

show abstract

“…We previously reported that the arterial bleeding site was clearly visualized by color Doppler ultrasonography in women with intractable PPH. 5) Contrast-enhanced ultrasound is a promising technique to detect PPH, 6) but it does not provide sufficient information regarding the accurate location of the bleeding site or the shape of the uterine cavity. On the other hand, color Doppler ultrasonography and subsequent dCT scans could be useful for determining treatment strategies for women with intractable atonic PPH.…”

Section: Discussionmentioning

confidence: 99%

Video image: Ultrasound findings of a novel subtype of atonic postpartum hemorrhage: is it still a diagnosis of exclusion?

Kondoh

Chigusa

Ueda

et al. 2019

Hypertens Res Pregnancy

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A Novel Approach to Detecting Postpartum Hemorrhage Using Contrast-Enhanced Ultrasound

Cited by 2 publications

References 24 publications

Comparison of common perioperative blood loss estimation techniques: a systematic review and meta-analysis

Comparison of common perioperative blood loss estimation techniques: a systematic review and meta-analysis

Video image: Ultrasound findings of a novel subtype of atonic postpartum hemorrhage: is it still a diagnosis of exclusion?

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