Skip to main content

Intraoperative management of hypoxemia with recruitment maneuvers: are the benefits worth the costs?

Introduction

Several strategies can be applied for the prevention and management of anesthesia-related hypoxemia. The aim of our study was to investigate the cardiovascular effects of a specific recruitment maneuver (RM) used for the management of intraoperative hypoxemia.

Methods

Forty-nine patients (29 male/20 female) of mean age 57.4 ± 9.9 years, mean weight 80.2 ± 13.6 kg and ASA-PS classification I to IV (I: 2, II: 27, III: 16, IV: 6), undergoing general surgery procedures, who developed intraoperative hypoxemia (PaO2/FiO2 <200), were enrolled in our study. For the management of hypoxemia a total of 67 RMs have been applied, which consisted of a manual increase of the airway pressure to 40 cmH2O. This rise has been maintained for 10 seconds and was followed by an increase of positive end-expiratory pressure from 5 to 10 cmH2O. Before RM application an oesophageal Doppler monitor probe was inserted into the patients for measuring stroke volume (SV), cardiac output (CO), peak velocity (PV) and flow corrected time (FTc). Standard monitoring also included ECG, IBP, ETCO2 and SpO2. Heart rate (HR), systemic arterial pressure (SAP), SV, CO, PV and FTc were recorded directly before, during, right after and 5 minutes after RM application (T1 to T4). Kolmogorov-Smirnoff was used to test normal distribution of data and ANOVA was used for the statistical analysis. P < 0.05 was considered statistically significant.

Results

HR, SAP, SV, CO, PV and FTc showed a statistically significant decrease during and right after RM compared with the baseline values but they were gradually restored to control values after RM discontinuation (Table 1).

Table 1 (abstract P107)

Conclusion

According to our results, RM application causes a profound impairment of the cardiovascular system. This can be attributed to the increase of the airway pressures, which results in preload decrease and afterload increase of the right ventricle and cardiac contractility attenuation. Nevertheless, these effects are transient and reversible and RM application is a safe technique for the management of intraoperative hypoxemia, provided that adequate cardiac preload is ensured and the anesthesiologist is alert to discontinue the RM if it exceeds cardiovascular reserves.

Author information

Affiliations

Authors

Corresponding author

Correspondence to V Grosomanidis.

Rights and permissions

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

Reprints and Permissions

About this article

Cite this article

Grosomanidis, V., Fyntanidou, B., Karakoulas, K. et al. Intraoperative management of hypoxemia with recruitment maneuvers: are the benefits worth the costs?. Crit Care 17, P107 (2013). https://doi.org/10.1186/cc12045

Download citation

Keywords

  • Cardiac Output
  • Stroke Volume
  • Airway Pressure
  • Peak Velocity
  • Systemic Arterial Pressure