Ultrasound Does Not Detect Early Blood Loss in Healthy Volunteers Donating Blood

Resnick, Jeffrey I.; Cydulka, Rita K.; Platz, Elke; Jones, Robert A.

doi:10.1016/j.jemermed.2010.11.040

Cited by 35 publications

(33 citation statements)

References 11 publications

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“…Resnick et al, meanwhile, found no significant change in IVC size or IVCci in a study of 41 patients donating 500 ml blood [10]. This study used M-mode to measure the IVC 2 cm distal to the right atrial-caval junction.…”

Section: Discussionmentioning

confidence: 89%

“…This suggests that long axis should be the first-choice measurement for clinicians, and has not been reported previously. Other studies report that adequate longitudinal measurements were unobtainable from 7 to 11% of their participants, but it has rarely been reported in studies using transverse techniques [8,10]. As the IVC moves inferiorly with inspiration, it is also difficult to ensure that transverse measurements take place at a consistent position along the vessel.…”

Section: Discussionmentioning

confidence: 98%

“…The IVC may be measured in longitudinal or transverse planes, B or M modes, but there is little evidence to suggest which measurements are most reliably and accurately obtained [5][6][7][8][9][10]. M-mode allows changes in IVC diameter with respiration to be measured in a single screen shot and maximum/minimum values can be obtained easily.…”

Section: Introductionmentioning

confidence: 99%

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Best approach to measuring the inferior vena cava in spontaneously ventilating patients

Baker

Pott

Khan

et al. 2015

European Journal of Emergency Medicine

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The objective of this study was to establish the reliability of different measurements of inferior vena cava (IVC) size and respiratory variation in response to changes in circulating volume. Transabdominal ultrasound measurements of the IVC were obtained in longitudinal (B and M modes) and transverse planes (B-mode height and ellipse circumference) during inspiration and expiration, and inferior vena cava collapsibility indices (IVCci) were calculated. Measurements were repeated following venesection of ∼450 ml. Thirty patients underwent venesection. Their IVCci increased significantly for transverse and longitudinal height measurements following venesection, but not for transverse circumference measurements. Transverse views were inadequate in 27% of patients, compared with 7% for longitudinal views (P=0.04). Changes in IVCci are sensitive to small changes in circulating volume. Measurements are most frequently achieved in the longitudinal plane. There is an urgent need for standardization of sonographic IVC measurement techniques.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Best approach to measuring the inferior vena cava in spontaneously ventilating patients

Baker

Pott

Khan

et al. 2015

European Journal of Emergency Medicine

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“…These observations are confirmed by the results in Figure 9, which illustrate that assessment of diameter variations along three distinct (moving) M-lines results in considerably different CIs. In the literature, there are non-univocal recommendations about where to perform the diameter measurement (Resnick et al 2011;Wallace et al 2010): this inhomogeneous behavior of the vessel is likely to contribute to the variability in assessments (Weekes et al 2012).…”

Section: Interpretation Of the Resultsmentioning

confidence: 99%

Semi-automated Tracking and Continuous Monitoring of Inferior Vena Cava Diameter in Simulated and Experimental Ultrasound Imaging

Mesin¹,

Pasquero²,

Albani³

et al. 2015

Ultrasound in Medicine & Biology

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Assessment of respirophasic fluctuations in the diameter of the inferior vena cava (IVC) is detrimentally affected by its concomitant displacements. This study was aimed at presenting and validating a method to compensate for IVC movement artifacts while continuously measuring IVC diameter in an automated fashion (with minimal interaction with the user) from a longitudinal B-mode ultrasound clip. Performance was tested on both experimental ultrasound clips collected from four healthy patients and simulations, implementing rigid IVC displacements and pulsation. Compared with traditional M-mode measurements, the new approach systematically reduced errors in caval index assessment (range over maximum diameter value) to an extent depending on individual vessel geometry, IVC movement and choice of the M-line (the line along which the diameter is computed). In experimental recordings, this approach identified both the cardiac and respiratory components of IVC movement and pulsatility and evidenced the spatial dependence of IVC pulsatility. IVC tracking appears to be a promising approach to reduce movement artifacts and to improve the reliability of IVC diameter monitoring.

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“…The field of functional hemodynamic monitoring is actively emerging, and despite early skepticism, evidence suggests that dynamic assessment of the change in venous diameter during the respiratory cycle offers a number of unique advantages over the static, single-measurement approach [1,42]. Although VCI is not without important limitations [44], there seems to be a reasonable correlation between sonographic and traditional markers of intravascular volume status (Table 2), especially when temporal trends are taken into consideration [6,40].…”

Section: Overview Of Ultrasound In Hemodynamic and Volume Status Assementioning

confidence: 99%

Clinician-performed ultrasound in hemodynamic and cardiac assessment: a synopsis of current indications and limitations

Kelly

Esteve

Papadimos

et al. 2015

Eur J Trauma Emerg Surg

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Accurate hemodynamic and intravascular volume status assessment is essential in the diagnostic and therapeutic management of critically ill patients. Over the last two decades, a number of technological advances were translated into a variety of minimally invasive or non-invasive hemodynamic monitoring modalities. Despite the promise of less invasive technologies, the quality, reliability, reproducibility, and generalizability of resultant hemodynamic and intravascular volume status data have been lacking. Since its formal introduction, ultrasound technology has provided the medical community with a more standardized, higher quality, broadly applicable, and reproducible method of accomplishing the above-mentioned objectives. With the advent of portable, hand-carried devices, the importance of sonography in hemodynamic and volume status assessment became clear. From basic venous collapsibility and global cardiac assessment to more complex tasks such as the assessment of cardiac flow and tissue Doppler signals, the number of real-life indications for sonology continues to increase. This review will provide an outline of the essential ultrasound applications in hemodynamic and volume status assessment, focusing on evidence-based uses and indications.

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Ultrasound Does Not Detect Early Blood Loss in Healthy Volunteers Donating Blood

Cited by 35 publications

References 11 publications

Best approach to measuring the inferior vena cava in spontaneously ventilating patients

Best approach to measuring the inferior vena cava in spontaneously ventilating patients

Semi-automated Tracking and Continuous Monitoring of Inferior Vena Cava Diameter in Simulated and Experimental Ultrasound Imaging

Clinician-performed ultrasound in hemodynamic and cardiac assessment: a synopsis of current indications and limitations

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