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. 2023 Jul 21;13(7):1606.
doi: 10.3390/life13071606.

Differences in Hemodynamic Response to Passive Leg Raising Tests during the Day in Healthy Individuals: The Question of Normovolemia

Andrius Pranskunas  1 , Egle Gulbinaite  2 , Aiste Navickaite  2 , Zivile Pranskuniene  3   4
Affiliations

Differences in Hemodynamic Response to Passive Leg Raising Tests during the Day in Healthy Individuals: The Question of Normovolemia

Andrius Pranskunas et al. Life (Basel). .

Abstract

Background: The passive leg-raising (PLR) test was developed to predict fluid responsiveness and reduce fluid overload. However, the hemodynamic response of healthy individuals to the PLR test and how it changes during the day, between the morning and evening, after individuals have consumed food and fluids, has not been profoundly explored. This study aimed to compare the systemic hemodynamic changes in healthy individuals between morning and evening PLR tests.

Methods: In this study, the PLR test was performed twice a day. The first PLR test was performed between 08h00 and 09h00 in the morning, while the second PLR test was performed between 20h00 and 21h00 in the evening. Hemodynamic parameters were measured using an impedance cardiography monitor, and a cutoff value of a 10% increase in stroke volume (SV) during the PLR test was used to differentiate between preload responders and non-responders.

Results: We included 50 healthy volunteers in this study. When comparing the morning and evening PLR test results, we found no PLR-induced differences in heart rate (-3 [-8-2] vs. -2 [-8-4] beats/min, p = 0.870), SV (11 [5-22] vs. 12 [4-20] mL, p = 0.853) or cardiac output (0.7 [0.2-1.3] vs. 0.8 [0.1-1.4] L/min, p = 0.639). We also observed no differences in the proportion of preload responders during the PLR test between the morning and evening (64% vs. 66%, p = 0.99). However, there was a moderate agreement between the two PLR tests (morning and evening) (kappa = 0.429, p = 0.012). There was a moderate correlation between the changes in SV between the two PLR tests (rs = 0.50, p < 0.001).

Conclusion: In young, healthy individuals, we observed no change in the systemic hemodynamic responsiveness to the PLR test between the morning and evening, without restriction of fluid and food intake.

Keywords: circadian rhythms; normovolemia; passive leg raising; preload responsiveness.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Overview of the study procedure. PLR, passive leg raising.
Figure 2
Figure 2
Individual stroke volume changes during passive leg raising (PLR) in the morning and evening. * p < 0.05.
Figure 3
Figure 3
Correlation between the changes in stroke volume during passive leg raising (PLR) in the morning and evening: r = 0.5, p < 0.001.
See this image and copyright information in PMC

References

    1. Monnet X., Teboul J.L. Passive leg raising. Intensive Care Med. 2008;34:659–663. doi: 10.1007/s00134-008-0994-y. - DOI - PubMed
    1. Monnet X., Teboul J. Passive leg raising: Five rules, not a drop of fluid! Crit. Care. 2015;19:18. doi: 10.1186/s13054-014-0708-5. - DOI - PMC - PubMed
    1. London G.M., Pannier B.M., Laurent S., Lacolley P., Safar M.E. Brachial artery diameter changes associated with cardiopulmonary baroreflex activation in humans. Am. J. Physiol. 1990;258:773. doi: 10.1152/ajpheart.1990.258.3.H773. - DOI - PubMed
    1. Jermendy G., Kammerer L., Koltai Z.M., Cserhalmi L., Szelenyi J., Tichy M., Pogatsa G. Preclinical abnormality of left ventricular performance in patients with insulin-dependent diabetes mellitus. Acta Diabetol. Lat. 1983;20:311–320. doi: 10.1007/BF02581162. - DOI - PubMed
    1. Kamran H., Salciccioli L., Namana V., Venkatesan B., Santana C., Stewart M., Lazar J.M. Passive leg raising induced brachial artery dilation: Is an old technique a simpler method to measure endothelial function? Atherosclerosis. 2010;212:188–192. doi: 10.1016/j.atherosclerosis.2010.05.019. - DOI - PubMed

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