Dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study

Background: The hemoglobin index (HbI) represents the amount of hemoglobin, which reflects the regional tissue blood volume. The HbI is calculated by a regional oxygen saturation monitor. In freshwater drowning, inhaled water is immediately absorbed into the blood causing hemodilution. We hypothesiz...

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Autores principales:	Tomoya Hirose, Tomohiko Sakai, Ryosuke Takegawa, Mitsuo Ohnishi, Jotaro Tachino, Arisa Muratsu, Shunichiro Nakao, Tadahiko Shiozaki
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Near-infrared spectroscopy Regional oxygen saturation (rSO2) Return of spontaneous circulation (ROSC) Blood dilution Aspiration Specialties of internal medicine RC581-951
Acceso en línea:	https://doaj.org/article/eb80fbb3648b4bf7a7ab5a09d6accfdd
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spelling	oai:doaj.org-article:eb80fbb3648b4bf7a7ab5a09d6accfdd2021-11-12T04:48:14ZDynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study2666-520410.1016/j.resplu.2021.100179https://doaj.org/article/eb80fbb3648b4bf7a7ab5a09d6accfdd2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666520421001041https://doaj.org/toc/2666-5204Background: The hemoglobin index (HbI) represents the amount of hemoglobin, which reflects the regional tissue blood volume. The HbI is calculated by a regional oxygen saturation monitor. In freshwater drowning, inhaled water is immediately absorbed into the blood causing hemodilution. We hypothesized that this blood dilution could be observed in real time using HbI values in patients with out-of-hospital cardiac arrest (OHCA) due to freshwater drowning. Methods: In this single-center retrospective, observational study, we examined the HbI in patients with OHCA due to freshwater drowning from April 2015 to May 2020. Patients with OHCA due to hanging were selected as a control group. Results: Thirty-two patients in the freshwater drowning group and 21 in the control group were eligible for inclusion. In the freshwater drowning group, the HbI values in the return of spontaneous circulation (ROSC) group were significantly decreased in comparison to the non-ROSC group (−0.28 [IQR −0.55, −0.12] vs. −0.04 [IQR −0.16, 0.025]; p = 0.024). In the control group, the change of HbI during resuscitation in the ROSC and non-ROSC groups was not significantly different (0.11 [IQR −0.3525, 0.4225] vs. −0.02 [IQR −0.14, 0.605]; p = 0.8228). In each patient with ROSC in the freshwater drowning group, the HbI value after ROSC was significantly decreased in comparison to before ROSC (1.2±0.5 vs. 0.9±0.5]; p = 0.0156). In contrast, this difference was not observed in patients with an ROSC in the control group (3.7±1.3 vs. 3.8±1.4]; p = 0.7940). Conclusion: Blood dilution induced by freshwater drowning might be detected in real time using the HbI. To prove the validity of this research’s result, further prospective large study is needed.Tomoya HiroseTomohiko SakaiRyosuke TakegawaMitsuo OhnishiJotaro TachinoArisa MuratsuShunichiro NakaoTadahiko ShiozakiElsevierarticleNear-infrared spectroscopyRegional oxygen saturation (rSO2)Return of spontaneous circulation (ROSC)Blood dilutionAspirationSpecialties of internal medicineRC581-951ENResuscitation Plus, Vol 8, Iss , Pp 100179- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Near-infrared spectroscopy Regional oxygen saturation (rSO2) Return of spontaneous circulation (ROSC) Blood dilution Aspiration Specialties of internal medicine RC581-951
spellingShingle	Near-infrared spectroscopy Regional oxygen saturation (rSO2) Return of spontaneous circulation (ROSC) Blood dilution Aspiration Specialties of internal medicine RC581-951 Tomoya Hirose Tomohiko Sakai Ryosuke Takegawa Mitsuo Ohnishi Jotaro Tachino Arisa Muratsu Shunichiro Nakao Tadahiko Shiozaki Dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study
description	Background: The hemoglobin index (HbI) represents the amount of hemoglobin, which reflects the regional tissue blood volume. The HbI is calculated by a regional oxygen saturation monitor. In freshwater drowning, inhaled water is immediately absorbed into the blood causing hemodilution. We hypothesized that this blood dilution could be observed in real time using HbI values in patients with out-of-hospital cardiac arrest (OHCA) due to freshwater drowning. Methods: In this single-center retrospective, observational study, we examined the HbI in patients with OHCA due to freshwater drowning from April 2015 to May 2020. Patients with OHCA due to hanging were selected as a control group. Results: Thirty-two patients in the freshwater drowning group and 21 in the control group were eligible for inclusion. In the freshwater drowning group, the HbI values in the return of spontaneous circulation (ROSC) group were significantly decreased in comparison to the non-ROSC group (−0.28 [IQR −0.55, −0.12] vs. −0.04 [IQR −0.16, 0.025]; p = 0.024). In the control group, the change of HbI during resuscitation in the ROSC and non-ROSC groups was not significantly different (0.11 [IQR −0.3525, 0.4225] vs. −0.02 [IQR −0.14, 0.605]; p = 0.8228). In each patient with ROSC in the freshwater drowning group, the HbI value after ROSC was significantly decreased in comparison to before ROSC (1.2±0.5 vs. 0.9±0.5]; p = 0.0156). In contrast, this difference was not observed in patients with an ROSC in the control group (3.7±1.3 vs. 3.8±1.4]; p = 0.7940). Conclusion: Blood dilution induced by freshwater drowning might be detected in real time using the HbI. To prove the validity of this research’s result, further prospective large study is needed.
format	article
author	Tomoya Hirose Tomohiko Sakai Ryosuke Takegawa Mitsuo Ohnishi Jotaro Tachino Arisa Muratsu Shunichiro Nakao Tadahiko Shiozaki
author_facet	Tomoya Hirose Tomohiko Sakai Ryosuke Takegawa Mitsuo Ohnishi Jotaro Tachino Arisa Muratsu Shunichiro Nakao Tadahiko Shiozaki
author_sort	Tomoya Hirose
title	Dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study
title_short	Dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study
title_full	Dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study
title_fullStr	Dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study
title_full_unstemmed	Dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study
title_sort	dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: a retrospective observational study
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/eb80fbb3648b4bf7a7ab5a09d6accfdd
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Dynamic changes of the hemoglobin index during resuscitation in patients with out-of-hospital cardiopulmonary arrest due to freshwater drowning: A retrospective observational study

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